Since commit 8996eafdcbad ("crypto: ahash - ensure statesize is non-zero"),
all ahash drivers are required to implement import()/export(), and must have
a non-zero statesize. Fix this for the ARM Crypto Extensions GHASH
implementation.
Fixes: 8996eafdcbad ("crypto: ahash - ensure statesize is non-zero")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
---
arch/arm/crypto/ghash-ce-glue.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/arch/arm/crypto/ghash-ce-glue.c b/arch/arm/crypto/ghash-ce-glue.c
index 1568cb5cd870..212aaa715fdb 100644
--- a/arch/arm/crypto/ghash-ce-glue.c
+++ b/arch/arm/crypto/ghash-ce-glue.c
@@ -220,6 +220,29 @@ static int ghash_async_digest(struct ahash_request *req)
}
}
+static int ghash_async_import(struct ahash_request *req, const void *in)
+{
+ struct ahash_request *cryptd_req = ahash_request_ctx(req);
+ struct shash_desc *desc = cryptd_shash_desc(cryptd_req);
+ struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
+
+ ghash_async_init(req);
+
+ *dctx = *(const struct ghash_desc_ctx *)in;
+ return 0;
+
+}
+
+static int ghash_async_export(struct ahash_request *req, void *out)
+{
+ struct ahash_request *cryptd_req = ahash_request_ctx(req);
+ struct shash_desc *desc = cryptd_shash_desc(cryptd_req);
+ struct ghash_desc_ctx *dctx = shash_desc_ctx(desc);
+
+ *(struct ghash_desc_ctx *)out = *dctx;
+ return 0;
+}
+
static int ghash_async_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
@@ -268,7 +291,10 @@ static struct ahash_alg ghash_async_alg = {
.final = ghash_async_final,
.setkey = ghash_async_setkey,
.digest = ghash_async_digest,
+ .import = ghash_async_import,
+ .export = ghash_async_export,
.halg.digestsize = GHASH_DIGEST_SIZE,
+ .halg.statesize = sizeof(struct ghash_desc_ctx),
.halg.base = {
.cra_name = "ghash",
.cra_driver_name = "ghash-ce",
--
2.7.4
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