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| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-01-15 20:59:29 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-01-15 20:59:29 -0200 |
| commit | f1dccedc8148026d9071c6805f7cb77374a9e56f (patch) | |
| tree | ba4a630084b8d21309930321ff53a6ed4381c0f3 /arch/s390/crypto/sha256_s390.c | |
| parent | c943aa859c392eb4cc76d911daa1f261555075b2 (diff) | |
| parent | 0238cb4e7583c521bb3538060f98a73e65f61324 (diff) | |
| download | blackbird-op-linux-f1dccedc8148026d9071c6805f7cb77374a9e56f.tar.gz blackbird-op-linux-f1dccedc8148026d9071c6805f7cb77374a9e56f.zip | |
Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/s390/crypto/sha256_s390.c')
| -rw-r--r-- | arch/s390/crypto/sha256_s390.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/arch/s390/crypto/sha256_s390.c b/arch/s390/crypto/sha256_s390.c index b75bdbd476c7..1ec5e92b3454 100644 --- a/arch/s390/crypto/sha256_s390.c +++ b/arch/s390/crypto/sha256_s390.c @@ -51,6 +51,7 @@ static void sha256_update(void *ctx, const u8 *data, unsigned int len) { struct s390_sha256_ctx *sctx = ctx; unsigned int index; + int ret; /* how much is already in the buffer? */ index = sctx->count / 8 & 0x3f; @@ -58,15 +59,29 @@ static void sha256_update(void *ctx, const u8 *data, unsigned int len) /* update message bit length */ sctx->count += len * 8; - /* process one block */ - if ((index + len) >= SHA256_BLOCK_SIZE) { + if ((index + len) < SHA256_BLOCK_SIZE) + goto store; + + /* process one stored block */ + if (index) { memcpy(sctx->buf + index, data, SHA256_BLOCK_SIZE - index); - crypt_s390_kimd(KIMD_SHA_256, sctx->state, sctx->buf, - SHA256_BLOCK_SIZE); + ret = crypt_s390_kimd(KIMD_SHA_256, sctx->state, sctx->buf, + SHA256_BLOCK_SIZE); + BUG_ON(ret != SHA256_BLOCK_SIZE); data += SHA256_BLOCK_SIZE - index; len -= SHA256_BLOCK_SIZE - index; } + /* process as many blocks as possible */ + if (len >= SHA256_BLOCK_SIZE) { + ret = crypt_s390_kimd(KIMD_SHA_256, sctx->state, data, + len & ~(SHA256_BLOCK_SIZE - 1)); + BUG_ON(ret != (len & ~(SHA256_BLOCK_SIZE - 1))); + data += ret; + len -= ret; + } + +store: /* anything left? */ if (len) memcpy(sctx->buf + index , data, len); @@ -119,9 +134,9 @@ static struct crypto_alg alg = { .cra_list = LIST_HEAD_INIT(alg.cra_list), .cra_u = { .digest = { .dia_digestsize = SHA256_DIGEST_SIZE, - .dia_init = sha256_init, - .dia_update = sha256_update, - .dia_final = sha256_final } } + .dia_init = sha256_init, + .dia_update = sha256_update, + .dia_final = sha256_final } } }; static int init(void) |
