From 9ea9c58b40a441a0babef8c615acedcfb3733919 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Wed, 8 Jul 2020 09:39:40 -0700 Subject: [PATCH] crypto: lib/sha256 - add sha256() function Add a function sha256() which computes a SHA-256 digest in one step, combining sha256_init() + sha256_update() + sha256_final(). This is similar to how we also have blake2s(). Reviewed-by: Ard Biesheuvel Tested-by: Hans de Goede Signed-off-by: Eric Biggers Signed-off-by: Herbert Xu --- include/crypto/sha.h | 1 + lib/crypto/sha256.c | 10 ++++++++++ 2 files changed, 11 insertions(+) diff --git a/include/crypto/sha.h b/include/crypto/sha.h index 10753ff..4ff3da8 100644 --- a/include/crypto/sha.h +++ b/include/crypto/sha.h @@ -147,6 +147,7 @@ static inline void sha256_init(struct sha256_state *sctx) } void sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len); void sha256_final(struct sha256_state *sctx, u8 *out); +void sha256(const u8 *data, unsigned int len, u8 *out); static inline void sha224_init(struct sha256_state *sctx) { diff --git a/lib/crypto/sha256.c b/lib/crypto/sha256.c index 2e62169..2321f6c 100644 --- a/lib/crypto/sha256.c +++ b/lib/crypto/sha256.c @@ -280,4 +280,14 @@ void sha224_final(struct sha256_state *sctx, u8 *out) } EXPORT_SYMBOL(sha224_final); +void sha256(const u8 *data, unsigned int len, u8 *out) +{ + struct sha256_state sctx; + + sha256_init(&sctx); + sha256_update(&sctx, data, len); + sha256_final(&sctx, out); +} +EXPORT_SYMBOL(sha256); + MODULE_LICENSE("GPL"); -- 2.7.4