[PATCH 1/3] trusted-keys: rename trusted_defined files to trusted

[Mimi Zohar]

Rename trusted_defined.c and trusted_defined.h files to trusted.c and
trust.h, respectively. Based on request from David Howells.

Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxx>
---
 security/keys/Makefile          |    2 +-
 security/keys/trusted.c         | 1180 +++++++++++++++++++++++++++++++++++++++
 security/keys/trusted.h         |  134 +++++
 security/keys/trusted_defined.c | 1180 ---------------------------------------
 security/keys/trusted_defined.h |  134 -----
 5 files changed, 1315 insertions(+), 1315 deletions(-)
 create mode 100644 security/keys/trusted.c
 create mode 100644 security/keys/trusted.h
 delete mode 100644 security/keys/trusted_defined.c
 delete mode 100644 security/keys/trusted_defined.h

diff --git a/security/keys/Makefile b/security/keys/Makefile
index 6c94105..ad8da87 100644
--- a/security/keys/Makefile
+++ b/security/keys/Makefile
@@ -13,7 +13,7 @@ obj-y := \
 	request_key_auth.o \
 	user_defined.o
 
-obj-$(CONFIG_TRUSTED_KEYS) += trusted_defined.o
+obj-$(CONFIG_TRUSTED_KEYS) += trusted.o
 obj-$(CONFIG_ENCRYPTED_KEYS) += encrypted_defined.o
 obj-$(CONFIG_KEYS_COMPAT) += compat.o
 obj-$(CONFIG_PROC_FS) += proc.o
diff --git a/security/keys/trusted.c b/security/keys/trusted.c
new file mode 100644
index 0000000..3066f56
--- /dev/null
+++ b/security/keys/trusted.c
@@ -0,0 +1,1180 @@
+/*
+ * Copyright (C) 2010 IBM Corporation
+ *
+ * Author:
+ * David Safford <safford@xxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * See Documentation/keys-trusted-encrypted.txt
+ */
+
+#include <linux/uaccess.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/parser.h>
+#include <linux/string.h>
+#include <linux/err.h>
+#include <keys/user-type.h>
+#include <keys/trusted-type.h>
+#include <linux/key-type.h>
+#include <linux/rcupdate.h>
+#include <linux/crypto.h>
+#include <crypto/hash.h>
+#include <crypto/sha.h>
+#include <linux/capability.h>
+#include <linux/tpm.h>
+#include <linux/tpm_command.h>
+
+#include "trusted.h"
+
+static const char hmac_alg[] = "hmac(sha1)";
+static const char hash_alg[] = "sha1";
+
+struct sdesc {
+	struct shash_desc shash;
+	char ctx[];
+};
+
+static struct crypto_shash *hashalg;
+static struct crypto_shash *hmacalg;
+
+static struct sdesc *init_sdesc(struct crypto_shash *alg)
+{
+	struct sdesc *sdesc;
+	int size;
+
+	size = sizeof(struct shash_desc) + crypto_shash_descsize(alg);
+	sdesc = kmalloc(size, GFP_KERNEL);
+	if (!sdesc)
+		return ERR_PTR(-ENOMEM);
+	sdesc->shash.tfm = alg;
+	sdesc->shash.flags = 0x0;
+	return sdesc;
+}
+
+static int TSS_sha1(const unsigned char *data, unsigned int datalen,
+		    unsigned char *digest)
+{
+	struct sdesc *sdesc;
+	int ret;
+
+	sdesc = init_sdesc(hashalg);
+	if (IS_ERR(sdesc)) {
+		pr_info("trusted_key: can't alloc %s\n", hash_alg);
+		return PTR_ERR(sdesc);
+	}
+
+	ret = crypto_shash_digest(&sdesc->shash, data, datalen, digest);
+	kfree(sdesc);
+	return ret;
+}
+
+static int TSS_rawhmac(unsigned char *digest, const unsigned char *key,
+		       unsigned int keylen, ...)
+{
+	struct sdesc *sdesc;
+	va_list argp;
+	unsigned int dlen;
+	unsigned char *data;
+	int ret;
+
+	sdesc = init_sdesc(hmacalg);
+	if (IS_ERR(sdesc)) {
+		pr_info("trusted_key: can't alloc %s\n", hmac_alg);
+		return PTR_ERR(sdesc);
+	}
+
+	ret = crypto_shash_setkey(hmacalg, key, keylen);
+	if (ret < 0)
+		goto out;
+	ret = crypto_shash_init(&sdesc->shash);
+	if (ret < 0)
+		goto out;
+
+	va_start(argp, keylen);
+	for (;;) {
+		dlen = va_arg(argp, unsigned int);
+		if (dlen == 0)
+			break;
+		data = va_arg(argp, unsigned char *);
+		if (data == NULL) {
+			ret = -EINVAL;
+			break;
+		}
+		ret = crypto_shash_update(&sdesc->shash, data, dlen);
+		if (ret < 0)
+			break;
+	}
+	va_end(argp);
+	if (!ret)
+		ret = crypto_shash_final(&sdesc->shash, digest);
+out:
+	kfree(sdesc);
+	return ret;
+}
+
+/*
+ * calculate authorization info fields to send to TPM
+ */
+static int TSS_authhmac(unsigned char *digest, const unsigned char *key,
+			unsigned int keylen, unsigned char *h1,
+			unsigned char *h2, unsigned char h3, ...)
+{
+	unsigned char paramdigest[SHA1_DIGEST_SIZE];
+	struct sdesc *sdesc;
+	unsigned int dlen;
+	unsigned char *data;
+	unsigned char c;
+	int ret;
+	va_list argp;
+
+	sdesc = init_sdesc(hashalg);
+	if (IS_ERR(sdesc)) {
+		pr_info("trusted_key: can't alloc %s\n", hash_alg);
+		return PTR_ERR(sdesc);
+	}
+
+	c = h3;
+	ret = crypto_shash_init(&sdesc->shash);
+	if (ret < 0)
+		goto out;
+	va_start(argp, h3);
+	for (;;) {
+		dlen = va_arg(argp, unsigned int);
+		if (dlen == 0)
+			break;
+		data = va_arg(argp, unsigned char *);
+		if (!data) {
+			ret = -EINVAL;
+			break;
+		}
+		ret = crypto_shash_update(&sdesc->shash, data, dlen);
+		if (ret < 0)
+			break;
+	}
+	va_end(argp);
+	if (!ret)
+		ret = crypto_shash_final(&sdesc->shash, paramdigest);
+	if (!ret)
+		ret = TSS_rawhmac(digest, key, keylen, SHA1_DIGEST_SIZE,
+				  paramdigest, TPM_NONCE_SIZE, h1,
+				  TPM_NONCE_SIZE, h2, 1, &c, 0, 0);
+out:
+	kfree(sdesc);
+	return ret;
+}
+
+/*
+ * verify the AUTH1_COMMAND (Seal) result from TPM
+ */
+static int TSS_checkhmac1(unsigned char *buffer,
+			  const uint32_t command,
+			  const unsigned char *ononce,
+			  const unsigned char *key,
+			  unsigned int keylen, ...)
+{
+	uint32_t bufsize;
+	uint16_t tag;
+	uint32_t ordinal;
+	uint32_t result;
+	unsigned char *enonce;
+	unsigned char *continueflag;
+	unsigned char *authdata;
+	unsigned char testhmac[SHA1_DIGEST_SIZE];
+	unsigned char paramdigest[SHA1_DIGEST_SIZE];
+	struct sdesc *sdesc;
+	unsigned int dlen;
+	unsigned int dpos;
+	va_list argp;
+	int ret;
+
+	bufsize = LOAD32(buffer, TPM_SIZE_OFFSET);
+	tag = LOAD16(buffer, 0);
+	ordinal = command;
+	result = LOAD32N(buffer, TPM_RETURN_OFFSET);
+	if (tag == TPM_TAG_RSP_COMMAND)
+		return 0;
+	if (tag != TPM_TAG_RSP_AUTH1_COMMAND)
+		return -EINVAL;
+	authdata = buffer + bufsize - SHA1_DIGEST_SIZE;
+	continueflag = authdata - 1;
+	enonce = continueflag - TPM_NONCE_SIZE;
+
+	sdesc = init_sdesc(hashalg);
+	if (IS_ERR(sdesc)) {
+		pr_info("trusted_key: can't alloc %s\n", hash_alg);
+		return PTR_ERR(sdesc);
+	}
+	ret = crypto_shash_init(&sdesc->shash);
+	if (ret < 0)
+		goto out;
+	ret = crypto_shash_update(&sdesc->shash, (const u8 *)&result,
+				  sizeof result);
+	if (ret < 0)
+		goto out;
+	ret = crypto_shash_update(&sdesc->shash, (const u8 *)&ordinal,
+				  sizeof ordinal);
+	if (ret < 0)
+		goto out;
+	va_start(argp, keylen);
+	for (;;) {
+		dlen = va_arg(argp, unsigned int);
+		if (dlen == 0)
+			break;
+		dpos = va_arg(argp, unsigned int);
+		ret = crypto_shash_update(&sdesc->shash, buffer + dpos, dlen);
+		if (ret < 0)
+			break;
+	}
+	va_end(argp);
+	if (!ret)
+		ret = crypto_shash_final(&sdesc->shash, paramdigest);
+	if (ret < 0)
+		goto out;
+
+	ret = TSS_rawhmac(testhmac, key, keylen, SHA1_DIGEST_SIZE, paramdigest,
+			  TPM_NONCE_SIZE, enonce, TPM_NONCE_SIZE, ononce,
+			  1, continueflag, 0, 0);
+	if (ret < 0)
+		goto out;
+
+	if (memcmp(testhmac, authdata, SHA1_DIGEST_SIZE))
+		ret = -EINVAL;
+out:
+	kfree(sdesc);
+	return ret;
+}
+
+/*
+ * verify the AUTH2_COMMAND (unseal) result from TPM
+ */
+static int TSS_checkhmac2(unsigned char *buffer,
+			  const uint32_t command,
+			  const unsigned char *ononce,
+			  const unsigned char *key1,
+			  unsigned int keylen1,
+			  const unsigned char *key2,
+			  unsigned int keylen2, ...)
+{
+	uint32_t bufsize;
+	uint16_t tag;
+	uint32_t ordinal;
+	uint32_t result;
+	unsigned char *enonce1;
+	unsigned char *continueflag1;
+	unsigned char *authdata1;
+	unsigned char *enonce2;
+	unsigned char *continueflag2;
+	unsigned char *authdata2;
+	unsigned char testhmac1[SHA1_DIGEST_SIZE];
+	unsigned char testhmac2[SHA1_DIGEST_SIZE];
+	unsigned char paramdigest[SHA1_DIGEST_SIZE];
+	struct sdesc *sdesc;
+	unsigned int dlen;
+	unsigned int dpos;
+	va_list argp;
+	int ret;
+
+	bufsize = LOAD32(buffer, TPM_SIZE_OFFSET);
+	tag = LOAD16(buffer, 0);
+	ordinal = command;
+	result = LOAD32N(buffer, TPM_RETURN_OFFSET);
+
+	if (tag == TPM_TAG_RSP_COMMAND)
+		return 0;
+	if (tag != TPM_TAG_RSP_AUTH2_COMMAND)
+		return -EINVAL;
+	authdata1 = buffer + bufsize - (SHA1_DIGEST_SIZE + 1
+			+ SHA1_DIGEST_SIZE + SHA1_DIGEST_SIZE);
+	authdata2 = buffer + bufsize - (SHA1_DIGEST_SIZE);
+	continueflag1 = authdata1 - 1;
+	continueflag2 = authdata2 - 1;
+	enonce1 = continueflag1 - TPM_NONCE_SIZE;
+	enonce2 = continueflag2 - TPM_NONCE_SIZE;
+
+	sdesc = init_sdesc(hashalg);
+	if (IS_ERR(sdesc)) {
+		pr_info("trusted_key: can't alloc %s\n", hash_alg);
+		return PTR_ERR(sdesc);
+	}
+	ret = crypto_shash_init(&sdesc->shash);
+	if (ret < 0)
+		goto out;
+	ret = crypto_shash_update(&sdesc->shash, (const u8 *)&result,
+				  sizeof result);
+	if (ret < 0)
+		goto out;
+	ret = crypto_shash_update(&sdesc->shash, (const u8 *)&ordinal,
+				  sizeof ordinal);
+	if (ret < 0)
+		goto out;
+
+	va_start(argp, keylen2);
+	for (;;) {
+		dlen = va_arg(argp, unsigned int);
+		if (dlen == 0)
+			break;
+		dpos = va_arg(argp, unsigned int);
+		ret = crypto_shash_update(&sdesc->shash, buffer + dpos, dlen);
+		if (ret < 0)
+			break;
+	}
+	va_end(argp);
+	if (!ret)
+		ret = crypto_shash_final(&sdesc->shash, paramdigest);
+	if (ret < 0)
+		goto out;
+
+	ret = TSS_rawhmac(testhmac1, key1, keylen1, SHA1_DIGEST_SIZE,
+			  paramdigest, TPM_NONCE_SIZE, enonce1,
+			  TPM_NONCE_SIZE, ononce, 1, continueflag1, 0, 0);
+	if (ret < 0)
+		goto out;
+	if (memcmp(testhmac1, authdata1, SHA1_DIGEST_SIZE)) {
+		ret = -EINVAL;
+		goto out;
+	}
+	ret = TSS_rawhmac(testhmac2, key2, keylen2, SHA1_DIGEST_SIZE,
+			  paramdigest, TPM_NONCE_SIZE, enonce2,
+			  TPM_NONCE_SIZE, ononce, 1, continueflag2, 0, 0);
+	if (ret < 0)
+		goto out;
+	if (memcmp(testhmac2, authdata2, SHA1_DIGEST_SIZE))
+		ret = -EINVAL;
+out:
+	kfree(sdesc);
+	return ret;
+}
+
+/*
+ * For key specific tpm requests, we will generate and send our
+ * own TPM command packets using the drivers send function.
+ */
+static int trusted_tpm_send(const u32 chip_num, unsigned char *cmd,
+			    size_t buflen)
+{
+	int rc;
+
+	dump_tpm_buf(cmd);
+	rc = tpm_send(chip_num, cmd, buflen);
+	dump_tpm_buf(cmd);
+	if (rc > 0)
+		/* Can't return positive return codes values to keyctl */
+		rc = -EPERM;
+	return rc;
+}
+
+/*
+ * get a random value from TPM
+ */
+static int tpm_get_random(struct tpm_buf *tb, unsigned char *buf, uint32_t len)
+{
+	int ret;
+
+	INIT_BUF(tb);
+	store16(tb, TPM_TAG_RQU_COMMAND);
+	store32(tb, TPM_GETRANDOM_SIZE);
+	store32(tb, TPM_ORD_GETRANDOM);
+	store32(tb, len);
+	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, sizeof tb->data);
+	if (!ret)
+		memcpy(buf, tb->data + TPM_GETRANDOM_SIZE, len);
+	return ret;
+}
+
+static int my_get_random(unsigned char *buf, int len)
+{
+	struct tpm_buf *tb;
+	int ret;
+
+	tb = kmalloc(sizeof *tb, GFP_KERNEL);
+	if (!tb)
+		return -ENOMEM;
+	ret = tpm_get_random(tb, buf, len);
+
+	kfree(tb);
+	return ret;
+}
+
+/*
+ * Lock a trusted key, by extending a selected PCR.
+ *
+ * Prevents a trusted key that is sealed to PCRs from being accessed.
+ * This uses the tpm driver's extend function.
+ */
+static int pcrlock(const int pcrnum)
+{
+	unsigned char hash[SHA1_DIGEST_SIZE];
+	int ret;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
+	ret = my_get_random(hash, SHA1_DIGEST_SIZE);
+	if (ret < 0)
+		return ret;
+	return tpm_pcr_extend(TPM_ANY_NUM, pcrnum, hash) ? -EINVAL : 0;
+}
+
+/*
+ * Create an object specific authorisation protocol (OSAP) session
+ */
+static int osap(struct tpm_buf *tb, struct osapsess *s,
+		const unsigned char *key, uint16_t type, uint32_t handle)
+{
+	unsigned char enonce[TPM_NONCE_SIZE];
+	unsigned char ononce[TPM_NONCE_SIZE];
+	int ret;
+
+	ret = tpm_get_random(tb, ononce, TPM_NONCE_SIZE);
+	if (ret < 0)
+		return ret;
+
+	INIT_BUF(tb);
+	store16(tb, TPM_TAG_RQU_COMMAND);
+	store32(tb, TPM_OSAP_SIZE);
+	store32(tb, TPM_ORD_OSAP);
+	store16(tb, type);
+	store32(tb, handle);
+	storebytes(tb, ononce, TPM_NONCE_SIZE);
+
+	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, MAX_BUF_SIZE);
+	if (ret < 0)
+		return ret;
+
+	s->handle = LOAD32(tb->data, TPM_DATA_OFFSET);
+	memcpy(s->enonce, &(tb->data[TPM_DATA_OFFSET + sizeof(uint32_t)]),
+	       TPM_NONCE_SIZE);
+	memcpy(enonce, &(tb->data[TPM_DATA_OFFSET + sizeof(uint32_t) +
+				  TPM_NONCE_SIZE]), TPM_NONCE_SIZE);
+	return TSS_rawhmac(s->secret, key, SHA1_DIGEST_SIZE, TPM_NONCE_SIZE,
+			   enonce, TPM_NONCE_SIZE, ononce, 0, 0);
+}
+
+/*
+ * Create an object independent authorisation protocol (oiap) session
+ */
+static int oiap(struct tpm_buf *tb, uint32_t *handle, unsigned char *nonce)
+{
+	int ret;
+
+	INIT_BUF(tb);
+	store16(tb, TPM_TAG_RQU_COMMAND);
+	store32(tb, TPM_OIAP_SIZE);
+	store32(tb, TPM_ORD_OIAP);
+	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, MAX_BUF_SIZE);
+	if (ret < 0)
+		return ret;
+
+	*handle = LOAD32(tb->data, TPM_DATA_OFFSET);
+	memcpy(nonce, &tb->data[TPM_DATA_OFFSET + sizeof(uint32_t)],
+	       TPM_NONCE_SIZE);
+	return 0;
+}
+
+struct tpm_digests {
+	unsigned char encauth[SHA1_DIGEST_SIZE];
+	unsigned char pubauth[SHA1_DIGEST_SIZE];
+	unsigned char xorwork[SHA1_DIGEST_SIZE * 2];
+	unsigned char xorhash[SHA1_DIGEST_SIZE];
+	unsigned char nonceodd[TPM_NONCE_SIZE];
+};
+
+/*
+ * Have the TPM seal(encrypt) the trusted key, possibly based on
+ * Platform Configuration Registers (PCRs). AUTH1 for sealing key.
+ */
+static int tpm_seal(struct tpm_buf *tb, uint16_t keytype,
+		    uint32_t keyhandle, const unsigned char *keyauth,
+		    const unsigned char *data, uint32_t datalen,
+		    unsigned char *blob, uint32_t *bloblen,
+		    const unsigned char *blobauth,
+		    const unsigned char *pcrinfo, uint32_t pcrinfosize)
+{
+	struct osapsess sess;
+	struct tpm_digests *td;
+	unsigned char cont;
+	uint32_t ordinal;
+	uint32_t pcrsize;
+	uint32_t datsize;
+	int sealinfosize;
+	int encdatasize;
+	int storedsize;
+	int ret;
+	int i;
+
+	/* alloc some work space for all the hashes */
+	td = kmalloc(sizeof *td, GFP_KERNEL);
+	if (!td)
+		return -ENOMEM;
+
+	/* get session for sealing key */
+	ret = osap(tb, &sess, keyauth, keytype, keyhandle);
+	if (ret < 0)
+		goto out;
+	dump_sess(&sess);
+
+	/* calculate encrypted authorization value */
+	memcpy(td->xorwork, sess.secret, SHA1_DIGEST_SIZE);
+	memcpy(td->xorwork + SHA1_DIGEST_SIZE, sess.enonce, SHA1_DIGEST_SIZE);
+	ret = TSS_sha1(td->xorwork, SHA1_DIGEST_SIZE * 2, td->xorhash);
+	if (ret < 0)
+		goto out;
+
+	ret = tpm_get_random(tb, td->nonceodd, TPM_NONCE_SIZE);
+	if (ret < 0)
+		goto out;
+	ordinal = htonl(TPM_ORD_SEAL);
+	datsize = htonl(datalen);
+	pcrsize = htonl(pcrinfosize);
+	cont = 0;
+
+	/* encrypt data authorization key */
+	for (i = 0; i < SHA1_DIGEST_SIZE; ++i)
+		td->encauth[i] = td->xorhash[i] ^ blobauth[i];
+
+	/* calculate authorization HMAC value */
+	if (pcrinfosize == 0) {
+		/* no pcr info specified */
+		ret = TSS_authhmac(td->pubauth, sess.secret, SHA1_DIGEST_SIZE,
+				   sess.enonce, td->nonceodd, cont,
+				   sizeof(uint32_t), &ordinal, SHA1_DIGEST_SIZE,
+				   td->encauth, sizeof(uint32_t), &pcrsize,
+				   sizeof(uint32_t), &datsize, datalen, data, 0,
+				   0);
+	} else {
+		/* pcr info specified */
+		ret = TSS_authhmac(td->pubauth, sess.secret, SHA1_DIGEST_SIZE,
+				   sess.enonce, td->nonceodd, cont,
+				   sizeof(uint32_t), &ordinal, SHA1_DIGEST_SIZE,
+				   td->encauth, sizeof(uint32_t), &pcrsize,
+				   pcrinfosize, pcrinfo, sizeof(uint32_t),
+				   &datsize, datalen, data, 0, 0);
+	}
+	if (ret < 0)
+		goto out;
+
+	/* build and send the TPM request packet */
+	INIT_BUF(tb);
+	store16(tb, TPM_TAG_RQU_AUTH1_COMMAND);
+	store32(tb, TPM_SEAL_SIZE + pcrinfosize + datalen);
+	store32(tb, TPM_ORD_SEAL);
+	store32(tb, keyhandle);
+	storebytes(tb, td->encauth, SHA1_DIGEST_SIZE);
+	store32(tb, pcrinfosize);
+	storebytes(tb, pcrinfo, pcrinfosize);
+	store32(tb, datalen);
+	storebytes(tb, data, datalen);
+	store32(tb, sess.handle);
+	storebytes(tb, td->nonceodd, TPM_NONCE_SIZE);
+	store8(tb, cont);
+	storebytes(tb, td->pubauth, SHA1_DIGEST_SIZE);
+
+	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, MAX_BUF_SIZE);
+	if (ret < 0)
+		goto out;
+
+	/* calculate the size of the returned Blob */
+	sealinfosize = LOAD32(tb->data, TPM_DATA_OFFSET + sizeof(uint32_t));
+	encdatasize = LOAD32(tb->data, TPM_DATA_OFFSET + sizeof(uint32_t) +
+			     sizeof(uint32_t) + sealinfosize);
+	storedsize = sizeof(uint32_t) + sizeof(uint32_t) + sealinfosize +
+	    sizeof(uint32_t) + encdatasize;
+
+	/* check the HMAC in the response */
+	ret = TSS_checkhmac1(tb->data, ordinal, td->nonceodd, sess.secret,
+			     SHA1_DIGEST_SIZE, storedsize, TPM_DATA_OFFSET, 0,
+			     0);
+
+	/* copy the returned blob to caller */
+	if (!ret) {
+		memcpy(blob, tb->data + TPM_DATA_OFFSET, storedsize);
+		*bloblen = storedsize;
+	}
+out:
+	kfree(td);
+	return ret;
+}
+
+/*
+ * use the AUTH2_COMMAND form of unseal, to authorize both key and blob
+ */
+static int tpm_unseal(struct tpm_buf *tb,
+		      uint32_t keyhandle, const unsigned char *keyauth,
+		      const unsigned char *blob, int bloblen,
+		      const unsigned char *blobauth,
+		      unsigned char *data, unsigned int *datalen)
+{
+	unsigned char nonceodd[TPM_NONCE_SIZE];
+	unsigned char enonce1[TPM_NONCE_SIZE];
+	unsigned char enonce2[TPM_NONCE_SIZE];
+	unsigned char authdata1[SHA1_DIGEST_SIZE];
+	unsigned char authdata2[SHA1_DIGEST_SIZE];
+	uint32_t authhandle1 = 0;
+	uint32_t authhandle2 = 0;
+	unsigned char cont = 0;
+	uint32_t ordinal;
+	uint32_t keyhndl;
+	int ret;
+
+	/* sessions for unsealing key and data */
+	ret = oiap(tb, &authhandle1, enonce1);
+	if (ret < 0) {
+		pr_info("trusted_key: oiap failed (%d)\n", ret);
+		return ret;
+	}
+	ret = oiap(tb, &authhandle2, enonce2);
+	if (ret < 0) {
+		pr_info("trusted_key: oiap failed (%d)\n", ret);
+		return ret;
+	}
+
+	ordinal = htonl(TPM_ORD_UNSEAL);
+	keyhndl = htonl(SRKHANDLE);
+	ret = tpm_get_random(tb, nonceodd, TPM_NONCE_SIZE);
+	if (ret < 0) {
+		pr_info("trusted_key: tpm_get_random failed (%d)\n", ret);
+		return ret;
+	}
+	ret = TSS_authhmac(authdata1, keyauth, TPM_NONCE_SIZE,
+			   enonce1, nonceodd, cont, sizeof(uint32_t),
+			   &ordinal, bloblen, blob, 0, 0);
+	if (ret < 0)
+		return ret;
+	ret = TSS_authhmac(authdata2, blobauth, TPM_NONCE_SIZE,
+			   enonce2, nonceodd, cont, sizeof(uint32_t),
+			   &ordinal, bloblen, blob, 0, 0);
+	if (ret < 0)
+		return ret;
+
+	/* build and send TPM request packet */
+	INIT_BUF(tb);
+	store16(tb, TPM_TAG_RQU_AUTH2_COMMAND);
+	store32(tb, TPM_UNSEAL_SIZE + bloblen);
+	store32(tb, TPM_ORD_UNSEAL);
+	store32(tb, keyhandle);
+	storebytes(tb, blob, bloblen);
+	store32(tb, authhandle1);
+	storebytes(tb, nonceodd, TPM_NONCE_SIZE);
+	store8(tb, cont);
+	storebytes(tb, authdata1, SHA1_DIGEST_SIZE);
+	store32(tb, authhandle2);
+	storebytes(tb, nonceodd, TPM_NONCE_SIZE);
+	store8(tb, cont);
+	storebytes(tb, authdata2, SHA1_DIGEST_SIZE);
+
+	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, MAX_BUF_SIZE);
+	if (ret < 0) {
+		pr_info("trusted_key: authhmac failed (%d)\n", ret);
+		return ret;
+	}
+
+	*datalen = LOAD32(tb->data, TPM_DATA_OFFSET);
+	ret = TSS_checkhmac2(tb->data, ordinal, nonceodd,
+			     keyauth, SHA1_DIGEST_SIZE,
+			     blobauth, SHA1_DIGEST_SIZE,
+			     sizeof(uint32_t), TPM_DATA_OFFSET,
+			     *datalen, TPM_DATA_OFFSET + sizeof(uint32_t), 0,
+			     0);
+	if (ret < 0) {
+		pr_info("trusted_key: TSS_checkhmac2 failed (%d)\n", ret);
+		return ret;
+	}
+	memcpy(data, tb->data + TPM_DATA_OFFSET + sizeof(uint32_t), *datalen);
+	return 0;
+}
+
+/*
+ * Have the TPM seal(encrypt) the symmetric key
+ */
+static int key_seal(struct trusted_key_payload *p,
+		    struct trusted_key_options *o)
+{
+	struct tpm_buf *tb;
+	int ret;
+
+	tb = kzalloc(sizeof *tb, GFP_KERNEL);
+	if (!tb)
+		return -ENOMEM;
+
+	/* include migratable flag at end of sealed key */
+	p->key[p->key_len] = p->migratable;
+
+	ret = tpm_seal(tb, o->keytype, o->keyhandle, o->keyauth,
+		       p->key, p->key_len + 1, p->blob, &p->blob_len,
+		       o->blobauth, o->pcrinfo, o->pcrinfo_len);
+	if (ret < 0)
+		pr_info("trusted_key: srkseal failed (%d)\n", ret);
+
+	kfree(tb);
+	return ret;
+}
+
+/*
+ * Have the TPM unseal(decrypt) the symmetric key
+ */
+static int key_unseal(struct trusted_key_payload *p,
+		      struct trusted_key_options *o)
+{
+	struct tpm_buf *tb;
+	int ret;
+
+	tb = kzalloc(sizeof *tb, GFP_KERNEL);
+	if (!tb)
+		return -ENOMEM;
+
+	ret = tpm_unseal(tb, o->keyhandle, o->keyauth, p->blob, p->blob_len,
+			 o->blobauth, p->key, &p->key_len);
+	if (ret < 0)
+		pr_info("trusted_key: srkunseal failed (%d)\n", ret);
+	else
+		/* pull migratable flag out of sealed key */
+		p->migratable = p->key[--p->key_len];
+
+	kfree(tb);
+	return ret;
+}
+
+enum {
+	Opt_err = -1,
+	Opt_new, Opt_load, Opt_update,
+	Opt_keyhandle, Opt_keyauth, Opt_blobauth,
+	Opt_pcrinfo, Opt_pcrlock, Opt_migratable
+};
+
+static const match_table_t key_tokens = {
+	{Opt_new, "new"},
+	{Opt_load, "load"},
+	{Opt_update, "update"},
+	{Opt_keyhandle, "keyhandle=%s"},
+	{Opt_keyauth, "keyauth=%s"},
+	{Opt_blobauth, "blobauth=%s"},
+	{Opt_pcrinfo, "pcrinfo=%s"},
+	{Opt_pcrlock, "pcrlock=%s"},
+	{Opt_migratable, "migratable=%s"},
+	{Opt_err, NULL}
+};
+
+/* can have zero or more token= options */
+static int getoptions(char *c, struct trusted_key_payload *pay,
+		      struct trusted_key_options *opt)
+{
+	substring_t args[MAX_OPT_ARGS];
+	char *p = c;
+	int token;
+	int res;
+	unsigned long handle;
+	unsigned long lock;
+
+	while ((p = strsep(&c, " \t"))) {
+		if (*p == '\0' || *p == ' ' || *p == '\t')
+			continue;
+		token = match_token(p, key_tokens, args);
+
+		switch (token) {
+		case Opt_pcrinfo:
+			opt->pcrinfo_len = strlen(args[0].from) / 2;
+			if (opt->pcrinfo_len > MAX_PCRINFO_SIZE)
+				return -EINVAL;
+			hex2bin(opt->pcrinfo, args[0].from, opt->pcrinfo_len);
+			break;
+		case Opt_keyhandle:
+			res = strict_strtoul(args[0].from, 16, &handle);
+			if (res < 0)
+				return -EINVAL;
+			opt->keytype = SEAL_keytype;
+			opt->keyhandle = handle;
+			break;
+		case Opt_keyauth:
+			if (strlen(args[0].from) != 2 * SHA1_DIGEST_SIZE)
+				return -EINVAL;
+			hex2bin(opt->keyauth, args[0].from, SHA1_DIGEST_SIZE);
+			break;
+		case Opt_blobauth:
+			if (strlen(args[0].from) != 2 * SHA1_DIGEST_SIZE)
+				return -EINVAL;
+			hex2bin(opt->blobauth, args[0].from, SHA1_DIGEST_SIZE);
+			break;
+		case Opt_migratable:
+			if (*args[0].from == '0')
+				pay->migratable = 0;
+			else
+				return -EINVAL;
+			break;
+		case Opt_pcrlock:
+			res = strict_strtoul(args[0].from, 10, &lock);
+			if (res < 0)
+				return -EINVAL;
+			opt->pcrlock = lock;
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+	return 0;
+}
+
+/*
+ * datablob_parse - parse the keyctl data and fill in the
+ * 		    payload and options structures
+ *
+ * On success returns 0, otherwise -EINVAL.
+ */
+static int datablob_parse(char *datablob, struct trusted_key_payload *p,
+			  struct trusted_key_options *o)
+{
+	substring_t args[MAX_OPT_ARGS];
+	long keylen;
+	int ret = -EINVAL;
+	int key_cmd;
+	char *c;
+
+	/* main command */
+	c = strsep(&datablob, " \t");
+	if (!c)
+		return -EINVAL;
+	key_cmd = match_token(c, key_tokens, args);
+	switch (key_cmd) {
+	case Opt_new:
+		/* first argument is key size */
+		c = strsep(&datablob, " \t");
+		if (!c)
+			return -EINVAL;
+		ret = strict_strtol(c, 10, &keylen);
+		if (ret < 0 || keylen < MIN_KEY_SIZE || keylen > MAX_KEY_SIZE)
+			return -EINVAL;
+		p->key_len = keylen;
+		ret = getoptions(datablob, p, o);
+		if (ret < 0)
+			return ret;
+		ret = Opt_new;
+		break;
+	case Opt_load:
+		/* first argument is sealed blob */
+		c = strsep(&datablob, " \t");
+		if (!c)
+			return -EINVAL;
+		p->blob_len = strlen(c) / 2;
+		if (p->blob_len > MAX_BLOB_SIZE)
+			return -EINVAL;
+		hex2bin(p->blob, c, p->blob_len);
+		ret = getoptions(datablob, p, o);
+		if (ret < 0)
+			return ret;
+		ret = Opt_load;
+		break;
+	case Opt_update:
+		/* all arguments are options */
+		ret = getoptions(datablob, p, o);
+		if (ret < 0)
+			return ret;
+		ret = Opt_update;
+		break;
+	case Opt_err:
+		return -EINVAL;
+		break;
+	}
+	return ret;
+}
+
+static struct trusted_key_options *trusted_options_alloc(void)
+{
+	struct trusted_key_options *options;
+
+	options = kzalloc(sizeof *options, GFP_KERNEL);
+	if (options) {
+		/* set any non-zero defaults */
+		options->keytype = SRK_keytype;
+		options->keyhandle = SRKHANDLE;
+	}
+	return options;
+}
+
+static struct trusted_key_payload *trusted_payload_alloc(struct key *key)
+{
+	struct trusted_key_payload *p = NULL;
+	int ret;
+
+	ret = key_payload_reserve(key, sizeof *p);
+	if (ret < 0)
+		return p;
+	p = kzalloc(sizeof *p, GFP_KERNEL);
+	if (p)
+		p->migratable = 1; /* migratable by default */
+	return p;
+}
+
+/*
+ * trusted_instantiate - create a new trusted key
+ *
+ * Unseal an existing trusted blob or, for a new key, get a
+ * random key, then seal and create a trusted key-type key,
+ * adding it to the specified keyring.
+ *
+ * On success, return 0. Otherwise return errno.
+ */
+static int trusted_instantiate(struct key *key, const void *data,
+			       size_t datalen)
+{
+	struct trusted_key_payload *payload = NULL;
+	struct trusted_key_options *options = NULL;
+	char *datablob;
+	int ret = 0;
+	int key_cmd;
+
+	if (datalen <= 0 || datalen > 32767 || !data)
+		return -EINVAL;
+
+	datablob = kmalloc(datalen + 1, GFP_KERNEL);
+	if (!datablob)
+		return -ENOMEM;
+	memcpy(datablob, data, datalen);
+	datablob[datalen] = '\0';
+
+	options = trusted_options_alloc();
+	if (!options) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	payload = trusted_payload_alloc(key);
+	if (!payload) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	key_cmd = datablob_parse(datablob, payload, options);
+	if (key_cmd < 0) {
+		ret = key_cmd;
+		goto out;
+	}
+
+	dump_payload(payload);
+	dump_options(options);
+
+	switch (key_cmd) {
+	case Opt_load:
+		ret = key_unseal(payload, options);
+		dump_payload(payload);
+		dump_options(options);
+		if (ret < 0)
+			pr_info("trusted_key: key_unseal failed (%d)\n", ret);
+		break;
+	case Opt_new:
+		ret = my_get_random(payload->key, payload->key_len);
+		if (ret < 0) {
+			pr_info("trusted_key: key_create failed (%d)\n", ret);
+			goto out;
+		}
+		ret = key_seal(payload, options);
+		if (ret < 0)
+			pr_info("trusted_key: key_seal failed (%d)\n", ret);
+		break;
+	default:
+		ret = -EINVAL;
+		goto out;
+	}
+	if (!ret && options->pcrlock)
+		ret = pcrlock(options->pcrlock);
+out:
+	kfree(datablob);
+	kfree(options);
+	if (!ret)
+		rcu_assign_pointer(key->payload.data, payload);
+	else
+		kfree(payload);
+	return ret;
+}
+
+static void trusted_rcu_free(struct rcu_head *rcu)
+{
+	struct trusted_key_payload *p;
+
+	p = container_of(rcu, struct trusted_key_payload, rcu);
+	memset(p->key, 0, p->key_len);
+	kfree(p);
+}
+
+/*
+ * trusted_update - reseal an existing key with new PCR values
+ */
+static int trusted_update(struct key *key, const void *data, size_t datalen)
+{
+	struct trusted_key_payload *p = key->payload.data;
+	struct trusted_key_payload *new_p;
+	struct trusted_key_options *new_o;
+	char *datablob;
+	int ret = 0;
+
+	if (!p->migratable)
+		return -EPERM;
+	if (datalen <= 0 || datalen > 32767 || !data)
+		return -EINVAL;
+
+	datablob = kmalloc(datalen + 1, GFP_KERNEL);
+	if (!datablob)
+		return -ENOMEM;
+	new_o = trusted_options_alloc();
+	if (!new_o) {
+		ret = -ENOMEM;
+		goto out;
+	}
+	new_p = trusted_payload_alloc(key);
+	if (!new_p) {
+		ret = -ENOMEM;
+		goto out;
+	}
+
+	memcpy(datablob, data, datalen);
+	datablob[datalen] = '\0';
+	ret = datablob_parse(datablob, new_p, new_o);
+	if (ret != Opt_update) {
+		ret = -EINVAL;
+		goto out;
+	}
+	/* copy old key values, and reseal with new pcrs */
+	new_p->migratable = p->migratable;
+	new_p->key_len = p->key_len;
+	memcpy(new_p->key, p->key, p->key_len);
+	dump_payload(p);
+	dump_payload(new_p);
+
+	ret = key_seal(new_p, new_o);
+	if (ret < 0) {
+		pr_info("trusted_key: key_seal failed (%d)\n", ret);
+		kfree(new_p);
+		goto out;
+	}
+	if (new_o->pcrlock) {
+		ret = pcrlock(new_o->pcrlock);
+		if (ret < 0) {
+			pr_info("trusted_key: pcrlock failed (%d)\n", ret);
+			kfree(new_p);
+			goto out;
+		}
+	}
+	rcu_assign_pointer(key->payload.data, new_p);
+	call_rcu(&p->rcu, trusted_rcu_free);
+out:
+	kfree(datablob);
+	kfree(new_o);
+	return ret;
+}
+
+/*
+ * trusted_read - copy the sealed blob data to userspace in hex.
+ * On success, return to userspace the trusted key datablob size.
+ */
+static long trusted_read(const struct key *key, char __user *buffer,
+			 size_t buflen)
+{
+	struct trusted_key_payload *p;
+	char *ascii_buf;
+	char *bufp;
+	int i;
+
+	p = rcu_dereference_protected(key->payload.data,
+			rwsem_is_locked(&((struct key *)key)->sem));
+	if (!p)
+		return -EINVAL;
+	if (!buffer || buflen <= 0)
+		return 2 * p->blob_len;
+	ascii_buf = kmalloc(2 * p->blob_len, GFP_KERNEL);
+	if (!ascii_buf)
+		return -ENOMEM;
+
+	bufp = ascii_buf;
+	for (i = 0; i < p->blob_len; i++)
+		bufp = pack_hex_byte(bufp, p->blob[i]);
+	if ((copy_to_user(buffer, ascii_buf, 2 * p->blob_len)) != 0) {
+		kfree(ascii_buf);
+		return -EFAULT;
+	}
+	kfree(ascii_buf);
+	return 2 * p->blob_len;
+}
+
+/*
+ * trusted_destroy - before freeing the key, clear the decrypted data
+ */
+static void trusted_destroy(struct key *key)
+{
+	struct trusted_key_payload *p = key->payload.data;
+
+	if (!p)
+		return;
+	memset(p->key, 0, p->key_len);
+	kfree(key->payload.data);
+}
+
+struct key_type key_type_trusted = {
+	.name = "trusted",
+	.instantiate = trusted_instantiate,
+	.update = trusted_update,
+	.match = user_match,
+	.destroy = trusted_destroy,
+	.describe = user_describe,
+	.read = trusted_read,
+};
+
+EXPORT_SYMBOL_GPL(key_type_trusted);
+
+static void trusted_shash_release(void)
+{
+	if (hashalg)
+		crypto_free_shash(hashalg);
+	if (hmacalg)
+		crypto_free_shash(hmacalg);
+}
+
+static int __init trusted_shash_alloc(void)
+{
+	int ret;
+
+	hmacalg = crypto_alloc_shash(hmac_alg, 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(hmacalg)) {
+		pr_info("trusted_key: could not allocate crypto %s\n",
+			hmac_alg);
+		return PTR_ERR(hmacalg);
+	}
+
+	hashalg = crypto_alloc_shash(hash_alg, 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(hashalg)) {
+		pr_info("trusted_key: could not allocate crypto %s\n",
+			hash_alg);
+		ret = PTR_ERR(hashalg);
+		goto hashalg_fail;
+	}
+
+	return 0;
+
+hashalg_fail:
+	crypto_free_shash(hmacalg);
+	return ret;
+}
+
+static int __init init_trusted(void)
+{
+	int ret;
+
+	ret = trusted_shash_alloc();
+	if (ret < 0)
+		return ret;
+	ret = register_key_type(&key_type_trusted);
+	if (ret < 0)
+		trusted_shash_release();
+	return ret;
+}
+
+static void __exit cleanup_trusted(void)
+{
+	trusted_shash_release();
+	unregister_key_type(&key_type_trusted);
+}
+
+late_initcall(init_trusted);
+module_exit(cleanup_trusted);
+
+MODULE_LICENSE("GPL");
diff --git a/security/keys/trusted.h b/security/keys/trusted.h
new file mode 100644
index 0000000..3249fbd
--- /dev/null
+++ b/security/keys/trusted.h
@@ -0,0 +1,134 @@
+#ifndef __TRUSTED_KEY_H
+#define __TRUSTED_KEY_H
+
+/* implementation specific TPM constants */
+#define MAX_PCRINFO_SIZE		64
+#define MAX_BUF_SIZE			512
+#define TPM_GETRANDOM_SIZE		14
+#define TPM_OSAP_SIZE			36
+#define TPM_OIAP_SIZE			10
+#define TPM_SEAL_SIZE			87
+#define TPM_UNSEAL_SIZE			104
+#define TPM_SIZE_OFFSET			2
+#define TPM_RETURN_OFFSET		6
+#define TPM_DATA_OFFSET			10
+
+#define LOAD32(buffer, offset)	(ntohl(*(uint32_t *)&buffer[offset]))
+#define LOAD32N(buffer, offset)	(*(uint32_t *)&buffer[offset])
+#define LOAD16(buffer, offset)	(ntohs(*(uint16_t *)&buffer[offset]))
+
+struct tpm_buf {
+	int len;
+	unsigned char data[MAX_BUF_SIZE];
+};
+
+#define INIT_BUF(tb) (tb->len = 0)
+
+struct osapsess {
+	uint32_t handle;
+	unsigned char secret[SHA1_DIGEST_SIZE];
+	unsigned char enonce[TPM_NONCE_SIZE];
+};
+
+/* discrete values, but have to store in uint16_t for TPM use */
+enum {
+	SEAL_keytype = 1,
+	SRK_keytype = 4
+};
+
+struct trusted_key_options {
+	uint16_t keytype;
+	uint32_t keyhandle;
+	unsigned char keyauth[SHA1_DIGEST_SIZE];
+	unsigned char blobauth[SHA1_DIGEST_SIZE];
+	uint32_t pcrinfo_len;
+	unsigned char pcrinfo[MAX_PCRINFO_SIZE];
+	int pcrlock;
+};
+
+#define TPM_DEBUG 0
+
+#if TPM_DEBUG
+static inline void dump_options(struct trusted_key_options *o)
+{
+	pr_info("trusted_key: sealing key type %d\n", o->keytype);
+	pr_info("trusted_key: sealing key handle %0X\n", o->keyhandle);
+	pr_info("trusted_key: pcrlock %d\n", o->pcrlock);
+	pr_info("trusted_key: pcrinfo %d\n", o->pcrinfo_len);
+	print_hex_dump(KERN_INFO, "pcrinfo ", DUMP_PREFIX_NONE,
+		       16, 1, o->pcrinfo, o->pcrinfo_len, 0);
+}
+
+static inline void dump_payload(struct trusted_key_payload *p)
+{
+	pr_info("trusted_key: key_len %d\n", p->key_len);
+	print_hex_dump(KERN_INFO, "key ", DUMP_PREFIX_NONE,
+		       16, 1, p->key, p->key_len, 0);
+	pr_info("trusted_key: bloblen %d\n", p->blob_len);
+	print_hex_dump(KERN_INFO, "blob ", DUMP_PREFIX_NONE,
+		       16, 1, p->blob, p->blob_len, 0);
+	pr_info("trusted_key: migratable %d\n", p->migratable);
+}
+
+static inline void dump_sess(struct osapsess *s)
+{
+	print_hex_dump(KERN_INFO, "trusted-key: handle ", DUMP_PREFIX_NONE,
+		       16, 1, &s->handle, 4, 0);
+	pr_info("trusted-key: secret:\n");
+	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE,
+		       16, 1, &s->secret, SHA1_DIGEST_SIZE, 0);
+	pr_info("trusted-key: enonce:\n");
+	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE,
+		       16, 1, &s->enonce, SHA1_DIGEST_SIZE, 0);
+}
+
+static inline void dump_tpm_buf(unsigned char *buf)
+{
+	int len;
+
+	pr_info("\ntrusted-key: tpm buffer\n");
+	len = LOAD32(buf, TPM_SIZE_OFFSET);
+	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, buf, len, 0);
+}
+#else
+static inline void dump_options(struct trusted_key_options *o)
+{
+}
+
+static inline void dump_payload(struct trusted_key_payload *p)
+{
+}
+
+static inline void dump_sess(struct osapsess *s)
+{
+}
+
+static inline void dump_tpm_buf(unsigned char *buf)
+{
+}
+#endif
+
+static inline void store8(struct tpm_buf *buf, const unsigned char value)
+{
+	buf->data[buf->len++] = value;
+}
+
+static inline void store16(struct tpm_buf *buf, const uint16_t value)
+{
+	*(uint16_t *) & buf->data[buf->len] = htons(value);
+	buf->len += sizeof value;
+}
+
+static inline void store32(struct tpm_buf *buf, const uint32_t value)
+{
+	*(uint32_t *) & buf->data[buf->len] = htonl(value);
+	buf->len += sizeof value;
+}
+
+static inline void storebytes(struct tpm_buf *buf, const unsigned char *in,
+			      const int len)
+{
+	memcpy(buf->data + buf->len, in, len);
+	buf->len += len;
+}
+#endif
diff --git a/security/keys/trusted_defined.c b/security/keys/trusted_defined.c
deleted file mode 100644
index 2836c6d..0000000
--- a/security/keys/trusted_defined.c
+++ /dev/null
@@ -1,1180 +0,0 @@
-/*
- * Copyright (C) 2010 IBM Corporation
- *
- * Author:
- * David Safford <safford@xxxxxxxxxx>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, version 2 of the License.
- *
- * See Documentation/keys-trusted-encrypted.txt
- */
-
-#include <linux/uaccess.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/parser.h>
-#include <linux/string.h>
-#include <linux/err.h>
-#include <keys/user-type.h>
-#include <keys/trusted-type.h>
-#include <linux/key-type.h>
-#include <linux/rcupdate.h>
-#include <linux/crypto.h>
-#include <crypto/hash.h>
-#include <crypto/sha.h>
-#include <linux/capability.h>
-#include <linux/tpm.h>
-#include <linux/tpm_command.h>
-
-#include "trusted_defined.h"
-
-static const char hmac_alg[] = "hmac(sha1)";
-static const char hash_alg[] = "sha1";
-
-struct sdesc {
-	struct shash_desc shash;
-	char ctx[];
-};
-
-static struct crypto_shash *hashalg;
-static struct crypto_shash *hmacalg;
-
-static struct sdesc *init_sdesc(struct crypto_shash *alg)
-{
-	struct sdesc *sdesc;
-	int size;
-
-	size = sizeof(struct shash_desc) + crypto_shash_descsize(alg);
-	sdesc = kmalloc(size, GFP_KERNEL);
-	if (!sdesc)
-		return ERR_PTR(-ENOMEM);
-	sdesc->shash.tfm = alg;
-	sdesc->shash.flags = 0x0;
-	return sdesc;
-}
-
-static int TSS_sha1(const unsigned char *data, unsigned int datalen,
-		    unsigned char *digest)
-{
-	struct sdesc *sdesc;
-	int ret;
-
-	sdesc = init_sdesc(hashalg);
-	if (IS_ERR(sdesc)) {
-		pr_info("trusted_key: can't alloc %s\n", hash_alg);
-		return PTR_ERR(sdesc);
-	}
-
-	ret = crypto_shash_digest(&sdesc->shash, data, datalen, digest);
-	kfree(sdesc);
-	return ret;
-}
-
-static int TSS_rawhmac(unsigned char *digest, const unsigned char *key,
-		       unsigned int keylen, ...)
-{
-	struct sdesc *sdesc;
-	va_list argp;
-	unsigned int dlen;
-	unsigned char *data;
-	int ret;
-
-	sdesc = init_sdesc(hmacalg);
-	if (IS_ERR(sdesc)) {
-		pr_info("trusted_key: can't alloc %s\n", hmac_alg);
-		return PTR_ERR(sdesc);
-	}
-
-	ret = crypto_shash_setkey(hmacalg, key, keylen);
-	if (ret < 0)
-		goto out;
-	ret = crypto_shash_init(&sdesc->shash);
-	if (ret < 0)
-		goto out;
-
-	va_start(argp, keylen);
-	for (;;) {
-		dlen = va_arg(argp, unsigned int);
-		if (dlen == 0)
-			break;
-		data = va_arg(argp, unsigned char *);
-		if (data == NULL) {
-			ret = -EINVAL;
-			break;
-		}
-		ret = crypto_shash_update(&sdesc->shash, data, dlen);
-		if (ret < 0)
-			break;
-	}
-	va_end(argp);
-	if (!ret)
-		ret = crypto_shash_final(&sdesc->shash, digest);
-out:
-	kfree(sdesc);
-	return ret;
-}
-
-/*
- * calculate authorization info fields to send to TPM
- */
-static int TSS_authhmac(unsigned char *digest, const unsigned char *key,
-			unsigned int keylen, unsigned char *h1,
-			unsigned char *h2, unsigned char h3, ...)
-{
-	unsigned char paramdigest[SHA1_DIGEST_SIZE];
-	struct sdesc *sdesc;
-	unsigned int dlen;
-	unsigned char *data;
-	unsigned char c;
-	int ret;
-	va_list argp;
-
-	sdesc = init_sdesc(hashalg);
-	if (IS_ERR(sdesc)) {
-		pr_info("trusted_key: can't alloc %s\n", hash_alg);
-		return PTR_ERR(sdesc);
-	}
-
-	c = h3;
-	ret = crypto_shash_init(&sdesc->shash);
-	if (ret < 0)
-		goto out;
-	va_start(argp, h3);
-	for (;;) {
-		dlen = va_arg(argp, unsigned int);
-		if (dlen == 0)
-			break;
-		data = va_arg(argp, unsigned char *);
-		if (!data) {
-			ret = -EINVAL;
-			break;
-		}
-		ret = crypto_shash_update(&sdesc->shash, data, dlen);
-		if (ret < 0)
-			break;
-	}
-	va_end(argp);
-	if (!ret)
-		ret = crypto_shash_final(&sdesc->shash, paramdigest);
-	if (!ret)
-		ret = TSS_rawhmac(digest, key, keylen, SHA1_DIGEST_SIZE,
-				  paramdigest, TPM_NONCE_SIZE, h1,
-				  TPM_NONCE_SIZE, h2, 1, &c, 0, 0);
-out:
-	kfree(sdesc);
-	return ret;
-}
-
-/*
- * verify the AUTH1_COMMAND (Seal) result from TPM
- */
-static int TSS_checkhmac1(unsigned char *buffer,
-			  const uint32_t command,
-			  const unsigned char *ononce,
-			  const unsigned char *key,
-			  unsigned int keylen, ...)
-{
-	uint32_t bufsize;
-	uint16_t tag;
-	uint32_t ordinal;
-	uint32_t result;
-	unsigned char *enonce;
-	unsigned char *continueflag;
-	unsigned char *authdata;
-	unsigned char testhmac[SHA1_DIGEST_SIZE];
-	unsigned char paramdigest[SHA1_DIGEST_SIZE];
-	struct sdesc *sdesc;
-	unsigned int dlen;
-	unsigned int dpos;
-	va_list argp;
-	int ret;
-
-	bufsize = LOAD32(buffer, TPM_SIZE_OFFSET);
-	tag = LOAD16(buffer, 0);
-	ordinal = command;
-	result = LOAD32N(buffer, TPM_RETURN_OFFSET);
-	if (tag == TPM_TAG_RSP_COMMAND)
-		return 0;
-	if (tag != TPM_TAG_RSP_AUTH1_COMMAND)
-		return -EINVAL;
-	authdata = buffer + bufsize - SHA1_DIGEST_SIZE;
-	continueflag = authdata - 1;
-	enonce = continueflag - TPM_NONCE_SIZE;
-
-	sdesc = init_sdesc(hashalg);
-	if (IS_ERR(sdesc)) {
-		pr_info("trusted_key: can't alloc %s\n", hash_alg);
-		return PTR_ERR(sdesc);
-	}
-	ret = crypto_shash_init(&sdesc->shash);
-	if (ret < 0)
-		goto out;
-	ret = crypto_shash_update(&sdesc->shash, (const u8 *)&result,
-				  sizeof result);
-	if (ret < 0)
-		goto out;
-	ret = crypto_shash_update(&sdesc->shash, (const u8 *)&ordinal,
-				  sizeof ordinal);
-	if (ret < 0)
-		goto out;
-	va_start(argp, keylen);
-	for (;;) {
-		dlen = va_arg(argp, unsigned int);
-		if (dlen == 0)
-			break;
-		dpos = va_arg(argp, unsigned int);
-		ret = crypto_shash_update(&sdesc->shash, buffer + dpos, dlen);
-		if (ret < 0)
-			break;
-	}
-	va_end(argp);
-	if (!ret)
-		ret = crypto_shash_final(&sdesc->shash, paramdigest);
-	if (ret < 0)
-		goto out;
-
-	ret = TSS_rawhmac(testhmac, key, keylen, SHA1_DIGEST_SIZE, paramdigest,
-			  TPM_NONCE_SIZE, enonce, TPM_NONCE_SIZE, ononce,
-			  1, continueflag, 0, 0);
-	if (ret < 0)
-		goto out;
-
-	if (memcmp(testhmac, authdata, SHA1_DIGEST_SIZE))
-		ret = -EINVAL;
-out:
-	kfree(sdesc);
-	return ret;
-}
-
-/*
- * verify the AUTH2_COMMAND (unseal) result from TPM
- */
-static int TSS_checkhmac2(unsigned char *buffer,
-			  const uint32_t command,
-			  const unsigned char *ononce,
-			  const unsigned char *key1,
-			  unsigned int keylen1,
-			  const unsigned char *key2,
-			  unsigned int keylen2, ...)
-{
-	uint32_t bufsize;
-	uint16_t tag;
-	uint32_t ordinal;
-	uint32_t result;
-	unsigned char *enonce1;
-	unsigned char *continueflag1;
-	unsigned char *authdata1;
-	unsigned char *enonce2;
-	unsigned char *continueflag2;
-	unsigned char *authdata2;
-	unsigned char testhmac1[SHA1_DIGEST_SIZE];
-	unsigned char testhmac2[SHA1_DIGEST_SIZE];
-	unsigned char paramdigest[SHA1_DIGEST_SIZE];
-	struct sdesc *sdesc;
-	unsigned int dlen;
-	unsigned int dpos;
-	va_list argp;
-	int ret;
-
-	bufsize = LOAD32(buffer, TPM_SIZE_OFFSET);
-	tag = LOAD16(buffer, 0);
-	ordinal = command;
-	result = LOAD32N(buffer, TPM_RETURN_OFFSET);
-
-	if (tag == TPM_TAG_RSP_COMMAND)
-		return 0;
-	if (tag != TPM_TAG_RSP_AUTH2_COMMAND)
-		return -EINVAL;
-	authdata1 = buffer + bufsize - (SHA1_DIGEST_SIZE + 1
-			+ SHA1_DIGEST_SIZE + SHA1_DIGEST_SIZE);
-	authdata2 = buffer + bufsize - (SHA1_DIGEST_SIZE);
-	continueflag1 = authdata1 - 1;
-	continueflag2 = authdata2 - 1;
-	enonce1 = continueflag1 - TPM_NONCE_SIZE;
-	enonce2 = continueflag2 - TPM_NONCE_SIZE;
-
-	sdesc = init_sdesc(hashalg);
-	if (IS_ERR(sdesc)) {
-		pr_info("trusted_key: can't alloc %s\n", hash_alg);
-		return PTR_ERR(sdesc);
-	}
-	ret = crypto_shash_init(&sdesc->shash);
-	if (ret < 0)
-		goto out;
-	ret = crypto_shash_update(&sdesc->shash, (const u8 *)&result,
-				  sizeof result);
-	if (ret < 0)
-		goto out;
-	ret = crypto_shash_update(&sdesc->shash, (const u8 *)&ordinal,
-				  sizeof ordinal);
-	if (ret < 0)
-		goto out;
-
-	va_start(argp, keylen2);
-	for (;;) {
-		dlen = va_arg(argp, unsigned int);
-		if (dlen == 0)
-			break;
-		dpos = va_arg(argp, unsigned int);
-		ret = crypto_shash_update(&sdesc->shash, buffer + dpos, dlen);
-		if (ret < 0)
-			break;
-	}
-	va_end(argp);
-	if (!ret)
-		ret = crypto_shash_final(&sdesc->shash, paramdigest);
-	if (ret < 0)
-		goto out;
-
-	ret = TSS_rawhmac(testhmac1, key1, keylen1, SHA1_DIGEST_SIZE,
-			  paramdigest, TPM_NONCE_SIZE, enonce1,
-			  TPM_NONCE_SIZE, ononce, 1, continueflag1, 0, 0);
-	if (ret < 0)
-		goto out;
-	if (memcmp(testhmac1, authdata1, SHA1_DIGEST_SIZE)) {
-		ret = -EINVAL;
-		goto out;
-	}
-	ret = TSS_rawhmac(testhmac2, key2, keylen2, SHA1_DIGEST_SIZE,
-			  paramdigest, TPM_NONCE_SIZE, enonce2,
-			  TPM_NONCE_SIZE, ononce, 1, continueflag2, 0, 0);
-	if (ret < 0)
-		goto out;
-	if (memcmp(testhmac2, authdata2, SHA1_DIGEST_SIZE))
-		ret = -EINVAL;
-out:
-	kfree(sdesc);
-	return ret;
-}
-
-/*
- * For key specific tpm requests, we will generate and send our
- * own TPM command packets using the drivers send function.
- */
-static int trusted_tpm_send(const u32 chip_num, unsigned char *cmd,
-			    size_t buflen)
-{
-	int rc;
-
-	dump_tpm_buf(cmd);
-	rc = tpm_send(chip_num, cmd, buflen);
-	dump_tpm_buf(cmd);
-	if (rc > 0)
-		/* Can't return positive return codes values to keyctl */
-		rc = -EPERM;
-	return rc;
-}
-
-/*
- * get a random value from TPM
- */
-static int tpm_get_random(struct tpm_buf *tb, unsigned char *buf, uint32_t len)
-{
-	int ret;
-
-	INIT_BUF(tb);
-	store16(tb, TPM_TAG_RQU_COMMAND);
-	store32(tb, TPM_GETRANDOM_SIZE);
-	store32(tb, TPM_ORD_GETRANDOM);
-	store32(tb, len);
-	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, sizeof tb->data);
-	if (!ret)
-		memcpy(buf, tb->data + TPM_GETRANDOM_SIZE, len);
-	return ret;
-}
-
-static int my_get_random(unsigned char *buf, int len)
-{
-	struct tpm_buf *tb;
-	int ret;
-
-	tb = kmalloc(sizeof *tb, GFP_KERNEL);
-	if (!tb)
-		return -ENOMEM;
-	ret = tpm_get_random(tb, buf, len);
-
-	kfree(tb);
-	return ret;
-}
-
-/*
- * Lock a trusted key, by extending a selected PCR.
- *
- * Prevents a trusted key that is sealed to PCRs from being accessed.
- * This uses the tpm driver's extend function.
- */
-static int pcrlock(const int pcrnum)
-{
-	unsigned char hash[SHA1_DIGEST_SIZE];
-	int ret;
-
-	if (!capable(CAP_SYS_ADMIN))
-		return -EPERM;
-	ret = my_get_random(hash, SHA1_DIGEST_SIZE);
-	if (ret < 0)
-		return ret;
-	return tpm_pcr_extend(TPM_ANY_NUM, pcrnum, hash) ? -EINVAL : 0;
-}
-
-/*
- * Create an object specific authorisation protocol (OSAP) session
- */
-static int osap(struct tpm_buf *tb, struct osapsess *s,
-		const unsigned char *key, uint16_t type, uint32_t handle)
-{
-	unsigned char enonce[TPM_NONCE_SIZE];
-	unsigned char ononce[TPM_NONCE_SIZE];
-	int ret;
-
-	ret = tpm_get_random(tb, ononce, TPM_NONCE_SIZE);
-	if (ret < 0)
-		return ret;
-
-	INIT_BUF(tb);
-	store16(tb, TPM_TAG_RQU_COMMAND);
-	store32(tb, TPM_OSAP_SIZE);
-	store32(tb, TPM_ORD_OSAP);
-	store16(tb, type);
-	store32(tb, handle);
-	storebytes(tb, ononce, TPM_NONCE_SIZE);
-
-	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, MAX_BUF_SIZE);
-	if (ret < 0)
-		return ret;
-
-	s->handle = LOAD32(tb->data, TPM_DATA_OFFSET);
-	memcpy(s->enonce, &(tb->data[TPM_DATA_OFFSET + sizeof(uint32_t)]),
-	       TPM_NONCE_SIZE);
-	memcpy(enonce, &(tb->data[TPM_DATA_OFFSET + sizeof(uint32_t) +
-				  TPM_NONCE_SIZE]), TPM_NONCE_SIZE);
-	return TSS_rawhmac(s->secret, key, SHA1_DIGEST_SIZE, TPM_NONCE_SIZE,
-			   enonce, TPM_NONCE_SIZE, ononce, 0, 0);
-}
-
-/*
- * Create an object independent authorisation protocol (oiap) session
- */
-static int oiap(struct tpm_buf *tb, uint32_t *handle, unsigned char *nonce)
-{
-	int ret;
-
-	INIT_BUF(tb);
-	store16(tb, TPM_TAG_RQU_COMMAND);
-	store32(tb, TPM_OIAP_SIZE);
-	store32(tb, TPM_ORD_OIAP);
-	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, MAX_BUF_SIZE);
-	if (ret < 0)
-		return ret;
-
-	*handle = LOAD32(tb->data, TPM_DATA_OFFSET);
-	memcpy(nonce, &tb->data[TPM_DATA_OFFSET + sizeof(uint32_t)],
-	       TPM_NONCE_SIZE);
-	return 0;
-}
-
-struct tpm_digests {
-	unsigned char encauth[SHA1_DIGEST_SIZE];
-	unsigned char pubauth[SHA1_DIGEST_SIZE];
-	unsigned char xorwork[SHA1_DIGEST_SIZE * 2];
-	unsigned char xorhash[SHA1_DIGEST_SIZE];
-	unsigned char nonceodd[TPM_NONCE_SIZE];
-};
-
-/*
- * Have the TPM seal(encrypt) the trusted key, possibly based on
- * Platform Configuration Registers (PCRs). AUTH1 for sealing key.
- */
-static int tpm_seal(struct tpm_buf *tb, uint16_t keytype,
-		    uint32_t keyhandle, const unsigned char *keyauth,
-		    const unsigned char *data, uint32_t datalen,
-		    unsigned char *blob, uint32_t *bloblen,
-		    const unsigned char *blobauth,
-		    const unsigned char *pcrinfo, uint32_t pcrinfosize)
-{
-	struct osapsess sess;
-	struct tpm_digests *td;
-	unsigned char cont;
-	uint32_t ordinal;
-	uint32_t pcrsize;
-	uint32_t datsize;
-	int sealinfosize;
-	int encdatasize;
-	int storedsize;
-	int ret;
-	int i;
-
-	/* alloc some work space for all the hashes */
-	td = kmalloc(sizeof *td, GFP_KERNEL);
-	if (!td)
-		return -ENOMEM;
-
-	/* get session for sealing key */
-	ret = osap(tb, &sess, keyauth, keytype, keyhandle);
-	if (ret < 0)
-		goto out;
-	dump_sess(&sess);
-
-	/* calculate encrypted authorization value */
-	memcpy(td->xorwork, sess.secret, SHA1_DIGEST_SIZE);
-	memcpy(td->xorwork + SHA1_DIGEST_SIZE, sess.enonce, SHA1_DIGEST_SIZE);
-	ret = TSS_sha1(td->xorwork, SHA1_DIGEST_SIZE * 2, td->xorhash);
-	if (ret < 0)
-		goto out;
-
-	ret = tpm_get_random(tb, td->nonceodd, TPM_NONCE_SIZE);
-	if (ret < 0)
-		goto out;
-	ordinal = htonl(TPM_ORD_SEAL);
-	datsize = htonl(datalen);
-	pcrsize = htonl(pcrinfosize);
-	cont = 0;
-
-	/* encrypt data authorization key */
-	for (i = 0; i < SHA1_DIGEST_SIZE; ++i)
-		td->encauth[i] = td->xorhash[i] ^ blobauth[i];
-
-	/* calculate authorization HMAC value */
-	if (pcrinfosize == 0) {
-		/* no pcr info specified */
-		ret = TSS_authhmac(td->pubauth, sess.secret, SHA1_DIGEST_SIZE,
-				   sess.enonce, td->nonceodd, cont,
-				   sizeof(uint32_t), &ordinal, SHA1_DIGEST_SIZE,
-				   td->encauth, sizeof(uint32_t), &pcrsize,
-				   sizeof(uint32_t), &datsize, datalen, data, 0,
-				   0);
-	} else {
-		/* pcr info specified */
-		ret = TSS_authhmac(td->pubauth, sess.secret, SHA1_DIGEST_SIZE,
-				   sess.enonce, td->nonceodd, cont,
-				   sizeof(uint32_t), &ordinal, SHA1_DIGEST_SIZE,
-				   td->encauth, sizeof(uint32_t), &pcrsize,
-				   pcrinfosize, pcrinfo, sizeof(uint32_t),
-				   &datsize, datalen, data, 0, 0);
-	}
-	if (ret < 0)
-		goto out;
-
-	/* build and send the TPM request packet */
-	INIT_BUF(tb);
-	store16(tb, TPM_TAG_RQU_AUTH1_COMMAND);
-	store32(tb, TPM_SEAL_SIZE + pcrinfosize + datalen);
-	store32(tb, TPM_ORD_SEAL);
-	store32(tb, keyhandle);
-	storebytes(tb, td->encauth, SHA1_DIGEST_SIZE);
-	store32(tb, pcrinfosize);
-	storebytes(tb, pcrinfo, pcrinfosize);
-	store32(tb, datalen);
-	storebytes(tb, data, datalen);
-	store32(tb, sess.handle);
-	storebytes(tb, td->nonceodd, TPM_NONCE_SIZE);
-	store8(tb, cont);
-	storebytes(tb, td->pubauth, SHA1_DIGEST_SIZE);
-
-	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, MAX_BUF_SIZE);
-	if (ret < 0)
-		goto out;
-
-	/* calculate the size of the returned Blob */
-	sealinfosize = LOAD32(tb->data, TPM_DATA_OFFSET + sizeof(uint32_t));
-	encdatasize = LOAD32(tb->data, TPM_DATA_OFFSET + sizeof(uint32_t) +
-			     sizeof(uint32_t) + sealinfosize);
-	storedsize = sizeof(uint32_t) + sizeof(uint32_t) + sealinfosize +
-	    sizeof(uint32_t) + encdatasize;
-
-	/* check the HMAC in the response */
-	ret = TSS_checkhmac1(tb->data, ordinal, td->nonceodd, sess.secret,
-			     SHA1_DIGEST_SIZE, storedsize, TPM_DATA_OFFSET, 0,
-			     0);
-
-	/* copy the returned blob to caller */
-	if (!ret) {
-		memcpy(blob, tb->data + TPM_DATA_OFFSET, storedsize);
-		*bloblen = storedsize;
-	}
-out:
-	kfree(td);
-	return ret;
-}
-
-/*
- * use the AUTH2_COMMAND form of unseal, to authorize both key and blob
- */
-static int tpm_unseal(struct tpm_buf *tb,
-		      uint32_t keyhandle, const unsigned char *keyauth,
-		      const unsigned char *blob, int bloblen,
-		      const unsigned char *blobauth,
-		      unsigned char *data, unsigned int *datalen)
-{
-	unsigned char nonceodd[TPM_NONCE_SIZE];
-	unsigned char enonce1[TPM_NONCE_SIZE];
-	unsigned char enonce2[TPM_NONCE_SIZE];
-	unsigned char authdata1[SHA1_DIGEST_SIZE];
-	unsigned char authdata2[SHA1_DIGEST_SIZE];
-	uint32_t authhandle1 = 0;
-	uint32_t authhandle2 = 0;
-	unsigned char cont = 0;
-	uint32_t ordinal;
-	uint32_t keyhndl;
-	int ret;
-
-	/* sessions for unsealing key and data */
-	ret = oiap(tb, &authhandle1, enonce1);
-	if (ret < 0) {
-		pr_info("trusted_key: oiap failed (%d)\n", ret);
-		return ret;
-	}
-	ret = oiap(tb, &authhandle2, enonce2);
-	if (ret < 0) {
-		pr_info("trusted_key: oiap failed (%d)\n", ret);
-		return ret;
-	}
-
-	ordinal = htonl(TPM_ORD_UNSEAL);
-	keyhndl = htonl(SRKHANDLE);
-	ret = tpm_get_random(tb, nonceodd, TPM_NONCE_SIZE);
-	if (ret < 0) {
-		pr_info("trusted_key: tpm_get_random failed (%d)\n", ret);
-		return ret;
-	}
-	ret = TSS_authhmac(authdata1, keyauth, TPM_NONCE_SIZE,
-			   enonce1, nonceodd, cont, sizeof(uint32_t),
-			   &ordinal, bloblen, blob, 0, 0);
-	if (ret < 0)
-		return ret;
-	ret = TSS_authhmac(authdata2, blobauth, TPM_NONCE_SIZE,
-			   enonce2, nonceodd, cont, sizeof(uint32_t),
-			   &ordinal, bloblen, blob, 0, 0);
-	if (ret < 0)
-		return ret;
-
-	/* build and send TPM request packet */
-	INIT_BUF(tb);
-	store16(tb, TPM_TAG_RQU_AUTH2_COMMAND);
-	store32(tb, TPM_UNSEAL_SIZE + bloblen);
-	store32(tb, TPM_ORD_UNSEAL);
-	store32(tb, keyhandle);
-	storebytes(tb, blob, bloblen);
-	store32(tb, authhandle1);
-	storebytes(tb, nonceodd, TPM_NONCE_SIZE);
-	store8(tb, cont);
-	storebytes(tb, authdata1, SHA1_DIGEST_SIZE);
-	store32(tb, authhandle2);
-	storebytes(tb, nonceodd, TPM_NONCE_SIZE);
-	store8(tb, cont);
-	storebytes(tb, authdata2, SHA1_DIGEST_SIZE);
-
-	ret = trusted_tpm_send(TPM_ANY_NUM, tb->data, MAX_BUF_SIZE);
-	if (ret < 0) {
-		pr_info("trusted_key: authhmac failed (%d)\n", ret);
-		return ret;
-	}
-
-	*datalen = LOAD32(tb->data, TPM_DATA_OFFSET);
-	ret = TSS_checkhmac2(tb->data, ordinal, nonceodd,
-			     keyauth, SHA1_DIGEST_SIZE,
-			     blobauth, SHA1_DIGEST_SIZE,
-			     sizeof(uint32_t), TPM_DATA_OFFSET,
-			     *datalen, TPM_DATA_OFFSET + sizeof(uint32_t), 0,
-			     0);
-	if (ret < 0) {
-		pr_info("trusted_key: TSS_checkhmac2 failed (%d)\n", ret);
-		return ret;
-	}
-	memcpy(data, tb->data + TPM_DATA_OFFSET + sizeof(uint32_t), *datalen);
-	return 0;
-}
-
-/*
- * Have the TPM seal(encrypt) the symmetric key
- */
-static int key_seal(struct trusted_key_payload *p,
-		    struct trusted_key_options *o)
-{
-	struct tpm_buf *tb;
-	int ret;
-
-	tb = kzalloc(sizeof *tb, GFP_KERNEL);
-	if (!tb)
-		return -ENOMEM;
-
-	/* include migratable flag at end of sealed key */
-	p->key[p->key_len] = p->migratable;
-
-	ret = tpm_seal(tb, o->keytype, o->keyhandle, o->keyauth,
-		       p->key, p->key_len + 1, p->blob, &p->blob_len,
-		       o->blobauth, o->pcrinfo, o->pcrinfo_len);
-	if (ret < 0)
-		pr_info("trusted_key: srkseal failed (%d)\n", ret);
-
-	kfree(tb);
-	return ret;
-}
-
-/*
- * Have the TPM unseal(decrypt) the symmetric key
- */
-static int key_unseal(struct trusted_key_payload *p,
-		      struct trusted_key_options *o)
-{
-	struct tpm_buf *tb;
-	int ret;
-
-	tb = kzalloc(sizeof *tb, GFP_KERNEL);
-	if (!tb)
-		return -ENOMEM;
-
-	ret = tpm_unseal(tb, o->keyhandle, o->keyauth, p->blob, p->blob_len,
-			 o->blobauth, p->key, &p->key_len);
-	if (ret < 0)
-		pr_info("trusted_key: srkunseal failed (%d)\n", ret);
-	else
-		/* pull migratable flag out of sealed key */
-		p->migratable = p->key[--p->key_len];
-
-	kfree(tb);
-	return ret;
-}
-
-enum {
-	Opt_err = -1,
-	Opt_new, Opt_load, Opt_update,
-	Opt_keyhandle, Opt_keyauth, Opt_blobauth,
-	Opt_pcrinfo, Opt_pcrlock, Opt_migratable
-};
-
-static const match_table_t key_tokens = {
-	{Opt_new, "new"},
-	{Opt_load, "load"},
-	{Opt_update, "update"},
-	{Opt_keyhandle, "keyhandle=%s"},
-	{Opt_keyauth, "keyauth=%s"},
-	{Opt_blobauth, "blobauth=%s"},
-	{Opt_pcrinfo, "pcrinfo=%s"},
-	{Opt_pcrlock, "pcrlock=%s"},
-	{Opt_migratable, "migratable=%s"},
-	{Opt_err, NULL}
-};
-
-/* can have zero or more token= options */
-static int getoptions(char *c, struct trusted_key_payload *pay,
-		      struct trusted_key_options *opt)
-{
-	substring_t args[MAX_OPT_ARGS];
-	char *p = c;
-	int token;
-	int res;
-	unsigned long handle;
-	unsigned long lock;
-
-	while ((p = strsep(&c, " \t"))) {
-		if (*p == '\0' || *p == ' ' || *p == '\t')
-			continue;
-		token = match_token(p, key_tokens, args);
-
-		switch (token) {
-		case Opt_pcrinfo:
-			opt->pcrinfo_len = strlen(args[0].from) / 2;
-			if (opt->pcrinfo_len > MAX_PCRINFO_SIZE)
-				return -EINVAL;
-			hex2bin(opt->pcrinfo, args[0].from, opt->pcrinfo_len);
-			break;
-		case Opt_keyhandle:
-			res = strict_strtoul(args[0].from, 16, &handle);
-			if (res < 0)
-				return -EINVAL;
-			opt->keytype = SEAL_keytype;
-			opt->keyhandle = handle;
-			break;
-		case Opt_keyauth:
-			if (strlen(args[0].from) != 2 * SHA1_DIGEST_SIZE)
-				return -EINVAL;
-			hex2bin(opt->keyauth, args[0].from, SHA1_DIGEST_SIZE);
-			break;
-		case Opt_blobauth:
-			if (strlen(args[0].from) != 2 * SHA1_DIGEST_SIZE)
-				return -EINVAL;
-			hex2bin(opt->blobauth, args[0].from, SHA1_DIGEST_SIZE);
-			break;
-		case Opt_migratable:
-			if (*args[0].from == '0')
-				pay->migratable = 0;
-			else
-				return -EINVAL;
-			break;
-		case Opt_pcrlock:
-			res = strict_strtoul(args[0].from, 10, &lock);
-			if (res < 0)
-				return -EINVAL;
-			opt->pcrlock = lock;
-			break;
-		default:
-			return -EINVAL;
-		}
-	}
-	return 0;
-}
-
-/*
- * datablob_parse - parse the keyctl data and fill in the
- * 		    payload and options structures
- *
- * On success returns 0, otherwise -EINVAL.
- */
-static int datablob_parse(char *datablob, struct trusted_key_payload *p,
-			  struct trusted_key_options *o)
-{
-	substring_t args[MAX_OPT_ARGS];
-	long keylen;
-	int ret = -EINVAL;
-	int key_cmd;
-	char *c;
-
-	/* main command */
-	c = strsep(&datablob, " \t");
-	if (!c)
-		return -EINVAL;
-	key_cmd = match_token(c, key_tokens, args);
-	switch (key_cmd) {
-	case Opt_new:
-		/* first argument is key size */
-		c = strsep(&datablob, " \t");
-		if (!c)
-			return -EINVAL;
-		ret = strict_strtol(c, 10, &keylen);
-		if (ret < 0 || keylen < MIN_KEY_SIZE || keylen > MAX_KEY_SIZE)
-			return -EINVAL;
-		p->key_len = keylen;
-		ret = getoptions(datablob, p, o);
-		if (ret < 0)
-			return ret;
-		ret = Opt_new;
-		break;
-	case Opt_load:
-		/* first argument is sealed blob */
-		c = strsep(&datablob, " \t");
-		if (!c)
-			return -EINVAL;
-		p->blob_len = strlen(c) / 2;
-		if (p->blob_len > MAX_BLOB_SIZE)
-			return -EINVAL;
-		hex2bin(p->blob, c, p->blob_len);
-		ret = getoptions(datablob, p, o);
-		if (ret < 0)
-			return ret;
-		ret = Opt_load;
-		break;
-	case Opt_update:
-		/* all arguments are options */
-		ret = getoptions(datablob, p, o);
-		if (ret < 0)
-			return ret;
-		ret = Opt_update;
-		break;
-	case Opt_err:
-		return -EINVAL;
-		break;
-	}
-	return ret;
-}
-
-static struct trusted_key_options *trusted_options_alloc(void)
-{
-	struct trusted_key_options *options;
-
-	options = kzalloc(sizeof *options, GFP_KERNEL);
-	if (options) {
-		/* set any non-zero defaults */
-		options->keytype = SRK_keytype;
-		options->keyhandle = SRKHANDLE;
-	}
-	return options;
-}
-
-static struct trusted_key_payload *trusted_payload_alloc(struct key *key)
-{
-	struct trusted_key_payload *p = NULL;
-	int ret;
-
-	ret = key_payload_reserve(key, sizeof *p);
-	if (ret < 0)
-		return p;
-	p = kzalloc(sizeof *p, GFP_KERNEL);
-	if (p)
-		p->migratable = 1; /* migratable by default */
-	return p;
-}
-
-/*
- * trusted_instantiate - create a new trusted key
- *
- * Unseal an existing trusted blob or, for a new key, get a
- * random key, then seal and create a trusted key-type key,
- * adding it to the specified keyring.
- *
- * On success, return 0. Otherwise return errno.
- */
-static int trusted_instantiate(struct key *key, const void *data,
-			       size_t datalen)
-{
-	struct trusted_key_payload *payload = NULL;
-	struct trusted_key_options *options = NULL;
-	char *datablob;
-	int ret = 0;
-	int key_cmd;
-
-	if (datalen <= 0 || datalen > 32767 || !data)
-		return -EINVAL;
-
-	datablob = kmalloc(datalen + 1, GFP_KERNEL);
-	if (!datablob)
-		return -ENOMEM;
-	memcpy(datablob, data, datalen);
-	datablob[datalen] = '\0';
-
-	options = trusted_options_alloc();
-	if (!options) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	payload = trusted_payload_alloc(key);
-	if (!payload) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	key_cmd = datablob_parse(datablob, payload, options);
-	if (key_cmd < 0) {
-		ret = key_cmd;
-		goto out;
-	}
-
-	dump_payload(payload);
-	dump_options(options);
-
-	switch (key_cmd) {
-	case Opt_load:
-		ret = key_unseal(payload, options);
-		dump_payload(payload);
-		dump_options(options);
-		if (ret < 0)
-			pr_info("trusted_key: key_unseal failed (%d)\n", ret);
-		break;
-	case Opt_new:
-		ret = my_get_random(payload->key, payload->key_len);
-		if (ret < 0) {
-			pr_info("trusted_key: key_create failed (%d)\n", ret);
-			goto out;
-		}
-		ret = key_seal(payload, options);
-		if (ret < 0)
-			pr_info("trusted_key: key_seal failed (%d)\n", ret);
-		break;
-	default:
-		ret = -EINVAL;
-		goto out;
-	}
-	if (!ret && options->pcrlock)
-		ret = pcrlock(options->pcrlock);
-out:
-	kfree(datablob);
-	kfree(options);
-	if (!ret)
-		rcu_assign_pointer(key->payload.data, payload);
-	else
-		kfree(payload);
-	return ret;
-}
-
-static void trusted_rcu_free(struct rcu_head *rcu)
-{
-	struct trusted_key_payload *p;
-
-	p = container_of(rcu, struct trusted_key_payload, rcu);
-	memset(p->key, 0, p->key_len);
-	kfree(p);
-}
-
-/*
- * trusted_update - reseal an existing key with new PCR values
- */
-static int trusted_update(struct key *key, const void *data, size_t datalen)
-{
-	struct trusted_key_payload *p = key->payload.data;
-	struct trusted_key_payload *new_p;
-	struct trusted_key_options *new_o;
-	char *datablob;
-	int ret = 0;
-
-	if (!p->migratable)
-		return -EPERM;
-	if (datalen <= 0 || datalen > 32767 || !data)
-		return -EINVAL;
-
-	datablob = kmalloc(datalen + 1, GFP_KERNEL);
-	if (!datablob)
-		return -ENOMEM;
-	new_o = trusted_options_alloc();
-	if (!new_o) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	new_p = trusted_payload_alloc(key);
-	if (!new_p) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	memcpy(datablob, data, datalen);
-	datablob[datalen] = '\0';
-	ret = datablob_parse(datablob, new_p, new_o);
-	if (ret != Opt_update) {
-		ret = -EINVAL;
-		goto out;
-	}
-	/* copy old key values, and reseal with new pcrs */
-	new_p->migratable = p->migratable;
-	new_p->key_len = p->key_len;
-	memcpy(new_p->key, p->key, p->key_len);
-	dump_payload(p);
-	dump_payload(new_p);
-
-	ret = key_seal(new_p, new_o);
-	if (ret < 0) {
-		pr_info("trusted_key: key_seal failed (%d)\n", ret);
-		kfree(new_p);
-		goto out;
-	}
-	if (new_o->pcrlock) {
-		ret = pcrlock(new_o->pcrlock);
-		if (ret < 0) {
-			pr_info("trusted_key: pcrlock failed (%d)\n", ret);
-			kfree(new_p);
-			goto out;
-		}
-	}
-	rcu_assign_pointer(key->payload.data, new_p);
-	call_rcu(&p->rcu, trusted_rcu_free);
-out:
-	kfree(datablob);
-	kfree(new_o);
-	return ret;
-}
-
-/*
- * trusted_read - copy the sealed blob data to userspace in hex.
- * On success, return to userspace the trusted key datablob size.
- */
-static long trusted_read(const struct key *key, char __user *buffer,
-			 size_t buflen)
-{
-	struct trusted_key_payload *p;
-	char *ascii_buf;
-	char *bufp;
-	int i;
-
-	p = rcu_dereference_protected(key->payload.data,
-			rwsem_is_locked(&((struct key *)key)->sem));
-	if (!p)
-		return -EINVAL;
-	if (!buffer || buflen <= 0)
-		return 2 * p->blob_len;
-	ascii_buf = kmalloc(2 * p->blob_len, GFP_KERNEL);
-	if (!ascii_buf)
-		return -ENOMEM;
-
-	bufp = ascii_buf;
-	for (i = 0; i < p->blob_len; i++)
-		bufp = pack_hex_byte(bufp, p->blob[i]);
-	if ((copy_to_user(buffer, ascii_buf, 2 * p->blob_len)) != 0) {
-		kfree(ascii_buf);
-		return -EFAULT;
-	}
-	kfree(ascii_buf);
-	return 2 * p->blob_len;
-}
-
-/*
- * trusted_destroy - before freeing the key, clear the decrypted data
- */
-static void trusted_destroy(struct key *key)
-{
-	struct trusted_key_payload *p = key->payload.data;
-
-	if (!p)
-		return;
-	memset(p->key, 0, p->key_len);
-	kfree(key->payload.data);
-}
-
-struct key_type key_type_trusted = {
-	.name = "trusted",
-	.instantiate = trusted_instantiate,
-	.update = trusted_update,
-	.match = user_match,
-	.destroy = trusted_destroy,
-	.describe = user_describe,
-	.read = trusted_read,
-};
-
-EXPORT_SYMBOL_GPL(key_type_trusted);
-
-static void trusted_shash_release(void)
-{
-	if (hashalg)
-		crypto_free_shash(hashalg);
-	if (hmacalg)
-		crypto_free_shash(hmacalg);
-}
-
-static int __init trusted_shash_alloc(void)
-{
-	int ret;
-
-	hmacalg = crypto_alloc_shash(hmac_alg, 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(hmacalg)) {
-		pr_info("trusted_key: could not allocate crypto %s\n",
-			hmac_alg);
-		return PTR_ERR(hmacalg);
-	}
-
-	hashalg = crypto_alloc_shash(hash_alg, 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(hashalg)) {
-		pr_info("trusted_key: could not allocate crypto %s\n",
-			hash_alg);
-		ret = PTR_ERR(hashalg);
-		goto hashalg_fail;
-	}
-
-	return 0;
-
-hashalg_fail:
-	crypto_free_shash(hmacalg);
-	return ret;
-}
-
-static int __init init_trusted(void)
-{
-	int ret;
-
-	ret = trusted_shash_alloc();
-	if (ret < 0)
-		return ret;
-	ret = register_key_type(&key_type_trusted);
-	if (ret < 0)
-		trusted_shash_release();
-	return ret;
-}
-
-static void __exit cleanup_trusted(void)
-{
-	trusted_shash_release();
-	unregister_key_type(&key_type_trusted);
-}
-
-late_initcall(init_trusted);
-module_exit(cleanup_trusted);
-
-MODULE_LICENSE("GPL");
diff --git a/security/keys/trusted_defined.h b/security/keys/trusted_defined.h
deleted file mode 100644
index 3249fbd..0000000
--- a/security/keys/trusted_defined.h
+++ /dev/null
@@ -1,134 +0,0 @@
-#ifndef __TRUSTED_KEY_H
-#define __TRUSTED_KEY_H
-
-/* implementation specific TPM constants */
-#define MAX_PCRINFO_SIZE		64
-#define MAX_BUF_SIZE			512
-#define TPM_GETRANDOM_SIZE		14
-#define TPM_OSAP_SIZE			36
-#define TPM_OIAP_SIZE			10
-#define TPM_SEAL_SIZE			87
-#define TPM_UNSEAL_SIZE			104
-#define TPM_SIZE_OFFSET			2
-#define TPM_RETURN_OFFSET		6
-#define TPM_DATA_OFFSET			10
-
-#define LOAD32(buffer, offset)	(ntohl(*(uint32_t *)&buffer[offset]))
-#define LOAD32N(buffer, offset)	(*(uint32_t *)&buffer[offset])
-#define LOAD16(buffer, offset)	(ntohs(*(uint16_t *)&buffer[offset]))
-
-struct tpm_buf {
-	int len;
-	unsigned char data[MAX_BUF_SIZE];
-};
-
-#define INIT_BUF(tb) (tb->len = 0)
-
-struct osapsess {
-	uint32_t handle;
-	unsigned char secret[SHA1_DIGEST_SIZE];
-	unsigned char enonce[TPM_NONCE_SIZE];
-};
-
-/* discrete values, but have to store in uint16_t for TPM use */
-enum {
-	SEAL_keytype = 1,
-	SRK_keytype = 4
-};
-
-struct trusted_key_options {
-	uint16_t keytype;
-	uint32_t keyhandle;
-	unsigned char keyauth[SHA1_DIGEST_SIZE];
-	unsigned char blobauth[SHA1_DIGEST_SIZE];
-	uint32_t pcrinfo_len;
-	unsigned char pcrinfo[MAX_PCRINFO_SIZE];
-	int pcrlock;
-};
-
-#define TPM_DEBUG 0
-
-#if TPM_DEBUG
-static inline void dump_options(struct trusted_key_options *o)
-{
-	pr_info("trusted_key: sealing key type %d\n", o->keytype);
-	pr_info("trusted_key: sealing key handle %0X\n", o->keyhandle);
-	pr_info("trusted_key: pcrlock %d\n", o->pcrlock);
-	pr_info("trusted_key: pcrinfo %d\n", o->pcrinfo_len);
-	print_hex_dump(KERN_INFO, "pcrinfo ", DUMP_PREFIX_NONE,
-		       16, 1, o->pcrinfo, o->pcrinfo_len, 0);
-}
-
-static inline void dump_payload(struct trusted_key_payload *p)
-{
-	pr_info("trusted_key: key_len %d\n", p->key_len);
-	print_hex_dump(KERN_INFO, "key ", DUMP_PREFIX_NONE,
-		       16, 1, p->key, p->key_len, 0);
-	pr_info("trusted_key: bloblen %d\n", p->blob_len);
-	print_hex_dump(KERN_INFO, "blob ", DUMP_PREFIX_NONE,
-		       16, 1, p->blob, p->blob_len, 0);
-	pr_info("trusted_key: migratable %d\n", p->migratable);
-}
-
-static inline void dump_sess(struct osapsess *s)
-{
-	print_hex_dump(KERN_INFO, "trusted-key: handle ", DUMP_PREFIX_NONE,
-		       16, 1, &s->handle, 4, 0);
-	pr_info("trusted-key: secret:\n");
-	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE,
-		       16, 1, &s->secret, SHA1_DIGEST_SIZE, 0);
-	pr_info("trusted-key: enonce:\n");
-	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE,
-		       16, 1, &s->enonce, SHA1_DIGEST_SIZE, 0);
-}
-
-static inline void dump_tpm_buf(unsigned char *buf)
-{
-	int len;
-
-	pr_info("\ntrusted-key: tpm buffer\n");
-	len = LOAD32(buf, TPM_SIZE_OFFSET);
-	print_hex_dump(KERN_INFO, "", DUMP_PREFIX_NONE, 16, 1, buf, len, 0);
-}
-#else
-static inline void dump_options(struct trusted_key_options *o)
-{
-}
-
-static inline void dump_payload(struct trusted_key_payload *p)
-{
-}
-
-static inline void dump_sess(struct osapsess *s)
-{
-}
-
-static inline void dump_tpm_buf(unsigned char *buf)
-{
-}
-#endif
-
-static inline void store8(struct tpm_buf *buf, const unsigned char value)
-{
-	buf->data[buf->len++] = value;
-}
-
-static inline void store16(struct tpm_buf *buf, const uint16_t value)
-{
-	*(uint16_t *) & buf->data[buf->len] = htons(value);
-	buf->len += sizeof value;
-}
-
-static inline void store32(struct tpm_buf *buf, const uint32_t value)
-{
-	*(uint32_t *) & buf->data[buf->len] = htonl(value);
-	buf->len += sizeof value;
-}
-
-static inline void storebytes(struct tpm_buf *buf, const unsigned char *in,
-			      const int len)
-{
-	memcpy(buf->data + buf->len, in, len);
-	buf->len += len;
-}
-#endif
-- 
1.7.3.4

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