[PATCH 11/19] Add algorithm properties table.
From: Miloslav TrmaÄ
Date: Fri Aug 20 2010 - 04:51:16 EST
Pointers to this table are used to identify algorithms throughout the
code.
---
crypto/userspace/Makefile | 2 +-
crypto/userspace/ncr-sessions.c | 150 +++++++++++++++++++++++++++++++++++++++
2 files changed, 151 insertions(+), 1 deletions(-)
create mode 100644 crypto/userspace/ncr-sessions.c
diff --git a/crypto/userspace/Makefile b/crypto/userspace/Makefile
index 81e4122..0891c2b 100644
--- a/crypto/userspace/Makefile
+++ b/crypto/userspace/Makefile
@@ -64,7 +64,7 @@ TOMCRYPT_OBJECTS = libtomcrypt/misc/zeromem.o libtomcrypt/misc/crypt/crypt_argch
libtomcrypt/pk/asn1/der/x509/der_decode_subject_public_key_info.o
cryptodev-objs := cryptodev_main.o cryptodev_cipher.o ncr-limits.o \
- utils.o $(TOMMATH_OBJECTS) \
+ ncr-sessions.o utils.o $(TOMMATH_OBJECTS) \
$(TOMCRYPT_OBJECTS)
diff --git a/crypto/userspace/ncr-sessions.c b/crypto/userspace/ncr-sessions.c
new file mode 100644
index 0000000..e6fd995
--- /dev/null
+++ b/crypto/userspace/ncr-sessions.c
@@ -0,0 +1,150 @@
+/*
+ * New driver for /dev/crypto device (aka CryptoDev)
+
+ * Copyright (c) 2010 Katholieke Universiteit Leuven
+ * Portions Copyright (c) 2010 Phil Sutter
+ *
+ * Author: Nikos Mavrogiannopoulos <nmav@xxxxxxxxxx>
+ *
+ * This file is part of linux cryptodev.
+ *
+ * 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; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <linux/audit.h>
+#include <linux/crypto.h>
+#include <linux/mutex.h>
+#include <linux/ncr.h>
+#include "ncr-int.h"
+#include <linux/mm_types.h>
+#include <linux/scatterlist.h>
+#include <net/netlink.h>
+
+static const struct algo_properties_st algo_properties[] = {
+#define KSTR(x) .kstr = x, .kstr_len = sizeof(x) - 1
+ { .algo = NCR_ALG_NULL, KSTR("ecb(cipher_null)"),
+ .needs_iv = 0, .is_symmetric=1, .can_encrypt=1,
+ .key_type = NCR_KEY_TYPE_INVALID },
+ { KSTR("cbc(des3_ede)"),
+ .needs_iv = 1, .is_symmetric=1, .can_encrypt=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { KSTR("cbc(aes)"),
+ .needs_iv = 1, .is_symmetric=1, .can_encrypt=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { KSTR("cbc(camelia)"),
+ .needs_iv = 1, .is_symmetric=1, .can_encrypt=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { KSTR("ctr(aes)"),
+ .needs_iv = 1, .is_symmetric=1, .can_encrypt=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { KSTR("ctr(camelia)"),
+ .needs_iv = 1, .is_symmetric=1, .can_encrypt=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { KSTR("ecb(aes)"),
+ .needs_iv = 0, .is_symmetric=1, .can_encrypt=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { KSTR("ecb(camelia)"),
+ .needs_iv = 0, .is_symmetric=1, .can_encrypt=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { .algo = NCR_ALG_SHA1, KSTR("sha1"),
+ .digest_size = 20, .can_digest=1,
+ .key_type = NCR_KEY_TYPE_INVALID },
+ { .algo = NCR_ALG_MD5, KSTR("md5"),
+ .digest_size = 16, .can_digest=1,
+ .key_type = NCR_KEY_TYPE_INVALID },
+ { .algo = NCR_ALG_SHA2_224, KSTR("sha224"),
+ .digest_size = 28, .can_digest=1,
+ .key_type = NCR_KEY_TYPE_INVALID },
+ { .algo = NCR_ALG_SHA2_256, KSTR("sha256"),
+ .digest_size = 32, .can_digest=1,
+ .key_type = NCR_KEY_TYPE_INVALID },
+ { .algo = NCR_ALG_SHA2_384, KSTR("sha384"),
+ .digest_size = 48, .can_digest=1,
+ .key_type = NCR_KEY_TYPE_INVALID },
+ { .algo = NCR_ALG_SHA2_512, KSTR("sha512"),
+ .digest_size = 64, .can_digest=1,
+ .key_type = NCR_KEY_TYPE_INVALID },
+ { .is_hmac = 1, KSTR("hmac(sha1)"),
+ .digest_size = 20, .can_sign=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { .is_hmac = 1, KSTR("hmac(md5)"),
+ .digest_size = 16, .can_sign=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { .is_hmac = 1, KSTR("hmac(sha224)"),
+ .digest_size = 28, .can_sign=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { .is_hmac = 1, KSTR("hmac(sha256)"),
+ .digest_size = 32, .can_sign=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { .is_hmac = 1, KSTR("hmac(sha384)"),
+ .digest_size = 48, .can_sign=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ { .is_hmac = 1, KSTR("hmac(sha512)"),
+ .digest_size = 64, .can_sign=1,
+ .key_type = NCR_KEY_TYPE_SECRET },
+ /* NOTE: These algorithm names are not available through the kernel API
+ (yet). */
+ { .algo = NCR_ALG_RSA, KSTR("rsa"), .is_pk = 1,
+ .can_encrypt=1, .can_sign=1, .key_type = NCR_KEY_TYPE_PUBLIC },
+ { .algo = NCR_ALG_DSA, KSTR("dsa"), .is_pk = 1,
+ .can_sign=1, .key_type = NCR_KEY_TYPE_PUBLIC },
+ { .algo = NCR_ALG_DH, KSTR("dh"), .is_pk = 1,
+ .can_kx=1, .key_type = NCR_KEY_TYPE_PUBLIC },
+#undef KSTR
+};
+
+/* The lookups by string are inefficient - can we look up all we need from
+ crypto API? */
+const struct algo_properties_st *_ncr_algo_to_properties(const char *algo)
+{
+ const struct algo_properties_st *a;
+ size_t name_len;
+
+ name_len = strlen(algo);
+ for (a = algo_properties;
+ a < algo_properties + ARRAY_SIZE(algo_properties); a++) {
+ if (a->kstr_len == name_len
+ && memcmp(a->kstr, algo, name_len) == 0)
+ return a;
+ }
+
+ return NULL;
+}
+
+const struct algo_properties_st *_ncr_nla_to_properties(const struct nlattr *nla)
+{
+ const struct algo_properties_st *a;
+ size_t name_len;
+
+ if (nla == NULL)
+ return NULL;
+
+ /* nla_len() >= 1 ensured by validate_nla() case NLA_NUL_STRING */
+ name_len = nla_len(nla) - 1;
+ for (a = algo_properties;
+ a < algo_properties + ARRAY_SIZE(algo_properties); a++) {
+ if (a->kstr_len == name_len
+ && memcmp(a->kstr, nla_data(nla), name_len + 1) == 0)
+ return a;
+ }
+ return NULL;
+}
+
+const char *ncr_algorithm_name(const struct algo_properties_st *algo)
+{
+ if (algo != NULL && algo->kstr != NULL)
+ return algo->kstr;
+ return "unknown";
+}
--
1.7.2.1
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