[PATCH] crypto: algif_skcipher - Enable access to internal skciphers

From: Tomas Paukrt
Date: Tue Sep 17 2024 - 05:20:55 EST


Add an option to enable the userspace interface for symmetric key
cipher algorithms marked as internal (CRYPTO_ALG_INTERNAL).

Signed-off-by: Tomas Paukrt <tomaspaukrt@xxxxxxxx>
---
crypto/Kconfig | 10 ++++++++++
crypto/algif_skcipher.c | 4 ++++
2 files changed, 14 insertions(+)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index a779cab..2ce1877 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1392,6 +1392,16 @@ config CRYPTO_USER_API_SKCIPHER
See Documentation/crypto/userspace-if.rst and
https://www.chronox.de/libkcapi/html/index.html

+config CRYPTO_USER_API_SKCIPHER_INTERNAL
+ bool "Enable access to internal symmetric key cipher algorithms"
+ depends on CRYPTO_USER_API_SKCIPHER
+ default n
+ help
+ Enable the userspace interface for symmetric key cipher algorithms
+ marked as internal (CRYPTO_ALG_INTERNAL).
+
+ Say N unless you know what you are doing.
+
config CRYPTO_USER_API_RNG
tristate "RNG (random number generator) algorithms"
depends on NET
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c
index 125d395..028aef7 100644
--- a/crypto/algif_skcipher.c
+++ b/crypto/algif_skcipher.c
@@ -342,6 +342,10 @@ static struct proto_ops algif_skcipher_ops_nokey = {

static void *skcipher_bind(const char *name, u32 type, u32 mask)
{
+#ifdef CONFIG_CRYPTO_USER_API_SKCIPHER_INTERNAL
+ type |= CRYPTO_ALG_INTERNAL;
+#endif
+
return crypto_alloc_skcipher(name, type, mask);
}

--
2.7.4