aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorHerbert Xu <herbert@gondor.apana.org.au>2010-02-01 09:17:56 +1100
committerGreg Kroah-Hartman <gregkh@suse.de>2010-02-23 07:37:54 -0800
commitfa56c7eaeca469055d79d1a2fe66a67829e44bf0 (patch)
treee68db13e83718f6006530181da7ee4c9e0f6b8fd
parentfe42d89779a0c5639afe0e543aac1f7d1d7d9582 (diff)
crypto: padlock-sha - Add import/export support
commit a8d7ac279743077965afeca0c9ed748507b68e89 upstream. As the padlock driver for SHA uses a software fallback to perform partial hashing, it must implement custom import/export functions. Otherwise hmac which depends on import/export for prehashing will not work with padlock-sha. Reported-by: Wolfgang Walter <wolfgang.walter@stwm.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/crypto/padlock-sha.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/crypto/padlock-sha.c b/drivers/crypto/padlock-sha.c
index 0af80577dc7..d3a27e0119b 100644
--- a/drivers/crypto/padlock-sha.c
+++ b/drivers/crypto/padlock-sha.c
@@ -57,6 +57,23 @@ static int padlock_sha_update(struct shash_desc *desc,
return crypto_shash_update(&dctx->fallback, data, length);
}
+static int padlock_sha_export(struct shash_desc *desc, void *out)
+{
+ struct padlock_sha_desc *dctx = shash_desc_ctx(desc);
+
+ return crypto_shash_export(&dctx->fallback, out);
+}
+
+static int padlock_sha_import(struct shash_desc *desc, const void *in)
+{
+ struct padlock_sha_desc *dctx = shash_desc_ctx(desc);
+ struct padlock_sha_ctx *ctx = crypto_shash_ctx(desc->tfm);
+
+ dctx->fallback.tfm = ctx->fallback;
+ dctx->fallback.flags = desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP;
+ return crypto_shash_import(&dctx->fallback, in);
+}
+
static inline void padlock_output_block(uint32_t *src,
uint32_t *dst, size_t count)
{
@@ -235,7 +252,10 @@ static struct shash_alg sha1_alg = {
.update = padlock_sha_update,
.finup = padlock_sha1_finup,
.final = padlock_sha1_final,
+ .export = padlock_sha_export,
+ .import = padlock_sha_import,
.descsize = sizeof(struct padlock_sha_desc),
+ .statesize = sizeof(struct sha1_state),
.base = {
.cra_name = "sha1",
.cra_driver_name = "sha1-padlock",
@@ -256,7 +276,10 @@ static struct shash_alg sha256_alg = {
.update = padlock_sha_update,
.finup = padlock_sha256_finup,
.final = padlock_sha256_final,
+ .export = padlock_sha_export,
+ .import = padlock_sha_import,
.descsize = sizeof(struct padlock_sha_desc),
+ .statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "sha256",
.cra_driver_name = "sha256-padlock",