Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
lib/crypto: sha256: Add sha224() and sha224_update()
Add a one-shot SHA-224 computation function sha224(), for consistency
with sha256(), sha384(), and sha512() which all already exist.
Similarly, add sha224_update(). While for now it's identical to
sha256_update(), omitting it makes the API harder to use since users
have to "know" which functions are the same between SHA-224 and SHA-256.
Also, this is a prerequisite for using different context types for each.
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250630160645.3198-6-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
+18
-2
+8
-2
include/crypto/sha2.h
+8
-2
include/crypto/sha2.h
···
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u8 buf[SHA512_BLOCK_SIZE];
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};
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+
void sha256_update(struct sha256_state *sctx, const u8 *data, size_t len);
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+
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static inline void sha224_init(struct sha256_state *sctx)
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{
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sha224_block_init(&sctx->ctx);
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}
121
-
/* Simply use sha256_update as it is equivalent to sha224_update. */
123
+
static inline void sha224_update(struct sha256_state *sctx,
124
+
const u8 *data, size_t len)
125
+
{
126
+
sha256_update(sctx, data, len);
127
+
}
122
128
void sha224_final(struct sha256_state *sctx, u8 out[SHA224_DIGEST_SIZE]);
129
+
void sha224(const u8 *data, size_t len, u8 out[SHA224_DIGEST_SIZE]);
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static inline void sha256_init(struct sha256_state *sctx)
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{
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sha256_block_init(&sctx->ctx);
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}
128
-
void sha256_update(struct sha256_state *sctx, const u8 *data, size_t len);
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void sha256_final(struct sha256_state *sctx, u8 out[SHA256_DIGEST_SIZE]);
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void sha256(const u8 *data, size_t len, u8 out[SHA256_DIGEST_SIZE]);
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137
+10
lib/crypto/sha256.c
+10
lib/crypto/sha256.c
···
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70
}
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EXPORT_SYMBOL(sha256_final);
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73
+
void sha224(const u8 *data, size_t len, u8 out[SHA224_DIGEST_SIZE])
74
+
{
75
+
struct sha256_state sctx;
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+
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+
sha224_init(&sctx);
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+
sha224_update(&sctx, data, len);
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+
sha224_final(&sctx, out);
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+
}
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+
EXPORT_SYMBOL(sha224);
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+
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void sha256(const u8 *data, size_t len, u8 out[SHA256_DIGEST_SIZE])
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{
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struct sha256_state sctx;