crypto: sha512 - Expose generic sha512 routine to be callable from other modules

Other SHA512 routines may need to use the generic routine when
FPU is not available.

Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/crypto/sha512_generic.c b/crypto/sha512_generic.c
index 71fcf36..4c58620 100644 (file)
--- a/crypto/sha512_generic.c
+++ b/crypto/sha512_generic.c
@@ -163,8 +163,8 @@ sha384_init(struct shash_desc *desc)
        return 0;
 }
 
-static int
-sha512_update(struct shash_desc *desc, const u8 *data, unsigned int len)
+int crypto_sha512_update(struct shash_desc *desc, const u8 *data,
+                       unsigned int len)
 {
        struct sha512_state *sctx = shash_desc_ctx(desc);
 
@@ -197,6 +197,7 @@ sha512_update(struct shash_desc *desc, const u8 *data, unsigned int len)
 
        return 0;
 }
+EXPORT_SYMBOL(crypto_sha512_update);
 
 static int
 sha512_final(struct shash_desc *desc, u8 *hash)
@@ -215,10 +216,10 @@ sha512_final(struct shash_desc *desc, u8 *hash)
        /* Pad out to 112 mod 128. */
        index = sctx->count[0] & 0x7f;
        pad_len = (index < 112) ? (112 - index) : ((128+112) - index);
-       sha512_update(desc, padding, pad_len);
+       crypto_sha512_update(desc, padding, pad_len);
 
        /* Append length (before padding) */
-       sha512_update(desc, (const u8 *)bits, sizeof(bits));
+       crypto_sha512_update(desc, (const u8 *)bits, sizeof(bits));
 
        /* Store state in digest */
        for (i = 0; i < 8; i++)
@@ -245,7 +246,7 @@ static int sha384_final(struct shash_desc *desc, u8 *hash)
 static struct shash_alg sha512_algs[2] = { {
        .digestsize     =       SHA512_DIGEST_SIZE,
        .init           =       sha512_init,
-       .update         =       sha512_update,
+       .update         =       crypto_sha512_update,
        .final          =       sha512_final,
        .descsize       =       sizeof(struct sha512_state),
        .base           =       {
@@ -257,7 +258,7 @@ static struct shash_alg sha512_algs[2] = { {
 }, {
        .digestsize     =       SHA384_DIGEST_SIZE,
        .init           =       sha384_init,
-       .update         =       sha512_update,
+       .update         =       crypto_sha512_update,
        .final          =       sha384_final,
        .descsize       =       sizeof(struct sha512_state),
        .base           =       {

diff --git a/include/crypto/sha.h b/include/crypto/sha.h
index f46ff61..190f8a0 100644 (file)
--- a/include/crypto/sha.h
+++ b/include/crypto/sha.h
@@ -89,4 +89,7 @@ extern int crypto_sha1_update(struct shash_desc *desc, const u8 *data,
 
 extern int crypto_sha256_update(struct shash_desc *desc, const u8 *data,
                              unsigned int len);
+
+extern int crypto_sha512_update(struct shash_desc *desc, const u8 *data,
+                             unsigned int len);
 #endif