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Diffstat (limited to 'crypto/cmac.c')
-rw-r--r--crypto/cmac.c36
1 files changed, 26 insertions, 10 deletions
diff --git a/crypto/cmac.c b/crypto/cmac.c
index f4a5d3bfb376..fce6b0f58e88 100644
--- a/crypto/cmac.c
+++ b/crypto/cmac.c
@@ -198,13 +198,14 @@ static int crypto_cmac_digest_final(struct shash_desc *pdesc, u8 *out)
return 0;
}
-static int cmac_init_tfm(struct crypto_tfm *tfm)
+static int cmac_init_tfm(struct crypto_shash *tfm)
{
+ struct shash_instance *inst = shash_alg_instance(tfm);
+ struct cmac_tfm_ctx *ctx = crypto_shash_ctx(tfm);
+ struct crypto_cipher_spawn *spawn;
struct crypto_cipher *cipher;
- struct crypto_instance *inst = (void *)tfm->__crt_alg;
- struct crypto_cipher_spawn *spawn = crypto_instance_ctx(inst);
- struct cmac_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+ spawn = shash_instance_ctx(inst);
cipher = crypto_spawn_cipher(spawn);
if (IS_ERR(cipher))
return PTR_ERR(cipher);
@@ -212,11 +213,26 @@ static int cmac_init_tfm(struct crypto_tfm *tfm)
ctx->child = cipher;
return 0;
-};
+}
+
+static int cmac_clone_tfm(struct crypto_shash *tfm, struct crypto_shash *otfm)
+{
+ struct cmac_tfm_ctx *octx = crypto_shash_ctx(otfm);
+ struct cmac_tfm_ctx *ctx = crypto_shash_ctx(tfm);
+ struct crypto_cipher *cipher;
+
+ cipher = crypto_clone_cipher(octx->child);
+ if (IS_ERR(cipher))
+ return PTR_ERR(cipher);
+
+ ctx->child = cipher;
-static void cmac_exit_tfm(struct crypto_tfm *tfm)
+ return 0;
+}
+
+static void cmac_exit_tfm(struct crypto_shash *tfm)
{
- struct cmac_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct cmac_tfm_ctx *ctx = crypto_shash_ctx(tfm);
crypto_free_cipher(ctx->child);
}
@@ -274,13 +290,13 @@ static int cmac_create(struct crypto_template *tmpl, struct rtattr **tb)
~(crypto_tfm_ctx_alignment() - 1))
+ alg->cra_blocksize * 2;
- inst->alg.base.cra_init = cmac_init_tfm;
- inst->alg.base.cra_exit = cmac_exit_tfm;
-
inst->alg.init = crypto_cmac_digest_init;
inst->alg.update = crypto_cmac_digest_update;
inst->alg.final = crypto_cmac_digest_final;
inst->alg.setkey = crypto_cmac_digest_setkey;
+ inst->alg.init_tfm = cmac_init_tfm;
+ inst->alg.clone_tfm = cmac_clone_tfm;
+ inst->alg.exit_tfm = cmac_exit_tfm;
inst->free = shash_free_singlespawn_instance;