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authorHerbert Xu <herbert@gondor.apana.org.au>2009-07-10 13:18:26 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2009-07-11 18:23:34 +0800
commit406f104b4172de7452702c6810807c1b0132ba22 (patch)
tree199d9585a1bc5d91f740c05b250454dd70cf2256 /arch/s390/crypto
parent9b2fda7b94a769af13c24582739e50664b0e27a8 (diff)
downloadlinux-linaro-android-406f104b4172de7452702c6810807c1b0132ba22.tar.gz
crypto: sha1-s390 - Add export/import support
This patch adds export/import support to sha1-s390. The exported type is defined by struct sha1_state, which is basically the entire descriptor state of sha1_generic. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/s390/crypto')
-rw-r--r--arch/s390/crypto/sha1_s390.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/s390/crypto/sha1_s390.c b/arch/s390/crypto/sha1_s390.c
index e85ba348722..2c5ec7969e3 100644
--- a/arch/s390/crypto/sha1_s390.c
+++ b/arch/s390/crypto/sha1_s390.c
@@ -46,12 +46,38 @@ static int sha1_init(struct shash_desc *desc)
return 0;
}
+static int sha1_export(struct shash_desc *desc, void *out)
+{
+ struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
+ struct sha1_state *octx = out;
+
+ octx->count = sctx->count;
+ memcpy(octx->state, sctx->state, sizeof(octx->state));
+ memcpy(octx->buffer, sctx->buf, sizeof(octx->buffer));
+ return 0;
+}
+
+static int sha1_import(struct shash_desc *desc, const u8 *in)
+{
+ struct sha1_state *sctx = shash_desc_ctx(desc);
+ struct sha1_state *ictx = in;
+
+ sctx->count = ictx->count;
+ memcpy(sctx->state, ictx->state, sizeof(ictx->state));
+ memcpy(sctx->buf, ictx->buffer, sizeof(ictx->buffer));
+ sctx->func = KIMD_SHA_1;
+ return 0;
+}
+
static struct shash_alg alg = {
.digestsize = SHA1_DIGEST_SIZE,
.init = sha1_init,
.update = s390_sha_update,
.final = s390_sha_final,
+ .export = sha1_export,
+ .import = sha1_import,
.descsize = sizeof(struct s390_sha_ctx),
+ .statesize = sizeof(struct sha1_state),
.base = {
.cra_name = "sha1",
.cra_driver_name= "sha1-s390",