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authorJussi Kivilinna <jussi.kivilinna@iki.fi>2013-05-21 17:10:49 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2013-05-28 15:43:05 +0800
commita710f761fc9ae5728765a5917f8beabb49f98483 (patch)
tree80d291557c53a8d68aeae3d9a39d8a0f719e683c /arch/x86/crypto
parent340991e30ccef7b983cf2814ecea610504f5d059 (diff)
crypto: sha256_ssse3 - add sha224 support
Add sha224 implementation to sha256_ssse3 module. This also fixes sha256_ssse3 module autoloading issue when 'sha224' is used before 'sha256'. Previously in such case, just sha256_generic was loaded and not sha256_ssse3 (since it did not provide sha224). Now if 'sha256' was used after 'sha224' usage, sha256_ssse3 would remain unloaded. Cc: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto')
-rw-r--r--arch/x86/crypto/sha256_ssse3_glue.c57
1 files changed, 52 insertions, 5 deletions
diff --git a/arch/x86/crypto/sha256_ssse3_glue.c b/arch/x86/crypto/sha256_ssse3_glue.c
index 597d4da69656..50226c4b86ed 100644
--- a/arch/x86/crypto/sha256_ssse3_glue.c
+++ b/arch/x86/crypto/sha256_ssse3_glue.c
@@ -187,7 +187,36 @@ static int sha256_ssse3_import(struct shash_desc *desc, const void *in)
return 0;
}
-static struct shash_alg alg = {
+static int sha224_ssse3_init(struct shash_desc *desc)
+{
+ struct sha256_state *sctx = shash_desc_ctx(desc);
+
+ sctx->state[0] = SHA224_H0;
+ sctx->state[1] = SHA224_H1;
+ sctx->state[2] = SHA224_H2;
+ sctx->state[3] = SHA224_H3;
+ sctx->state[4] = SHA224_H4;
+ sctx->state[5] = SHA224_H5;
+ sctx->state[6] = SHA224_H6;
+ sctx->state[7] = SHA224_H7;
+ sctx->count = 0;
+
+ return 0;
+}
+
+static int sha224_ssse3_final(struct shash_desc *desc, u8 *hash)
+{
+ u8 D[SHA256_DIGEST_SIZE];
+
+ sha256_ssse3_final(desc, D);
+
+ memcpy(hash, D, SHA224_DIGEST_SIZE);
+ memset(D, 0, SHA256_DIGEST_SIZE);
+
+ return 0;
+}
+
+static struct shash_alg algs[] = { {
.digestsize = SHA256_DIGEST_SIZE,
.init = sha256_ssse3_init,
.update = sha256_ssse3_update,
@@ -204,7 +233,24 @@ static struct shash_alg alg = {
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
-};
+}, {
+ .digestsize = SHA224_DIGEST_SIZE,
+ .init = sha224_ssse3_init,
+ .update = sha256_ssse3_update,
+ .final = sha224_ssse3_final,
+ .export = sha256_ssse3_export,
+ .import = sha256_ssse3_import,
+ .descsize = sizeof(struct sha256_state),
+ .statesize = sizeof(struct sha256_state),
+ .base = {
+ .cra_name = "sha224",
+ .cra_driver_name = "sha224-ssse3",
+ .cra_priority = 150,
+ .cra_flags = CRYPTO_ALG_TYPE_SHASH,
+ .cra_blocksize = SHA224_BLOCK_SIZE,
+ .cra_module = THIS_MODULE,
+ }
+} };
#ifdef CONFIG_AS_AVX
static bool __init avx_usable(void)
@@ -227,7 +273,7 @@ static bool __init avx_usable(void)
static int __init sha256_ssse3_mod_init(void)
{
- /* test for SSE3 first */
+ /* test for SSSE3 first */
if (cpu_has_ssse3)
sha256_transform_asm = sha256_transform_ssse3;
@@ -254,7 +300,7 @@ static int __init sha256_ssse3_mod_init(void)
else
#endif
pr_info("Using SSSE3 optimized SHA-256 implementation\n");
- return crypto_register_shash(&alg);
+ return crypto_register_shashes(algs, ARRAY_SIZE(algs));
}
pr_info("Neither AVX nor SSSE3 is available/usable.\n");
@@ -263,7 +309,7 @@ static int __init sha256_ssse3_mod_init(void)
static void __exit sha256_ssse3_mod_fini(void)
{
- crypto_unregister_shash(&alg);
+ crypto_unregister_shashes(algs, ARRAY_SIZE(algs));
}
module_init(sha256_ssse3_mod_init);
@@ -273,3 +319,4 @@ MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("SHA256 Secure Hash Algorithm, Supplemental SSE3 accelerated");
MODULE_ALIAS("sha256");
+MODULE_ALIAS("sha384");