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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2009-07-10 13:20:32 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2009-07-11 18:23:34 +0800 |
| commit | f63559bef380a95093408691c1081f07da755b74 (patch) | |
| tree | b01258c16accda5837edb5ae3f1b2e673f189dc8 /arch/s390/crypto/sha256_s390.c | |
| parent | 406f104b4172de7452702c6810807c1b0132ba22 (diff) | |
| download | lwn-f63559bef380a95093408691c1081f07da755b74.tar.gz lwn-f63559bef380a95093408691c1081f07da755b74.zip | |
crypto: sha256-s390 - Add export/import support
This patch adds export/import support to sha256-s390. The exported
type is defined by struct sha256_state, which is basically the entire
descriptor state of sha256_generic.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/s390/crypto/sha256_s390.c')
| -rw-r--r-- | arch/s390/crypto/sha256_s390.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/s390/crypto/sha256_s390.c b/arch/s390/crypto/sha256_s390.c index f9fefc569632..943a669452cf 100644 --- a/arch/s390/crypto/sha256_s390.c +++ b/arch/s390/crypto/sha256_s390.c @@ -42,12 +42,38 @@ static int sha256_init(struct shash_desc *desc) return 0; } +static int sha256_export(struct shash_desc *desc, void *out) +{ + struct s390_sha_ctx *sctx = shash_desc_ctx(desc); + struct sha256_state *octx = out; + + octx->count = sctx->count; + memcpy(octx->state, sctx->state, sizeof(octx->state)); + memcpy(octx->buf, sctx->buf, sizeof(octx->buf)); + return 0; +} + +static int sha256_import(struct shash_desc *desc, const u8 *in) +{ + struct sha256_state *sctx = shash_desc_ctx(desc); + struct sha256_state *ictx = in; + + sctx->count = ictx->count; + memcpy(sctx->state, ictx->state, sizeof(ictx->state)); + memcpy(sctx->buf, ictx->buf, sizeof(ictx->buf)); + sctx->func = KIMD_SHA_256; + return 0; +} + static struct shash_alg alg = { .digestsize = SHA256_DIGEST_SIZE, .init = sha256_init, .update = s390_sha_update, .final = s390_sha_final, + .export = sha256_export, + .import = sha256_import, .descsize = sizeof(struct s390_sha_ctx), + .statesize = sizeof(struct sha256_state), .base = { .cra_name = "sha256", .cra_driver_name= "sha256-s390", |