[CRYPTO] authenc: Add givcrypt operation
This patch implements the givcrypt function for authenc. It simply
calls the givcrypt operation on the underlying cipher instead of encrypt.
Signed-off-by: Herbert Xu <[EMAIL PROTECTED]>
---
crypto/authenc.c | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+)
diff --git a/crypto/authenc.c b/crypto/authenc.c
index bc4e608..c06f808 100644
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -144,6 +144,26 @@ static int crypto_authenc_encrypt(struct aead_request *req)
return crypto_authenc_hash(req);
}
+static int crypto_authenc_givcrypt(struct aead_request *req)
+{
+ struct crypto_aead *authenc = crypto_aead_reqtfm(req);
+ struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc);
+ struct ablkcipher_request *abreq = aead_request_ctx(req);
+ int err;
+
+ ablkcipher_request_set_tfm(abreq, ctx->enc);
+ ablkcipher_request_set_callback(abreq, aead_request_flags(req),
+ crypto_authenc_encrypt_done, req);
+ ablkcipher_request_set_crypt(abreq, req->src, req->dst, req->cryptlen,
+ req->iv);
+
+ err = crypto_ablkcipher_givcrypt(abreq);
+ if (err)
+ return err;
+
+ return crypto_authenc_hash(req);
+}
+
static int crypto_authenc_verify(struct aead_request *req)
{
struct crypto_aead *authenc = crypto_aead_reqtfm(req);
@@ -346,6 +366,7 @@ static struct crypto_instance *crypto_authenc_alloc(struct
rtattr **tb)
inst->alg.cra_aead.setkey = crypto_authenc_setkey;
inst->alg.cra_aead.encrypt = crypto_authenc_encrypt;
+ inst->alg.cra_aead.givcrypt = crypto_authenc_givcrypt;
inst->alg.cra_aead.decrypt = crypto_authenc_decrypt;
out:
-
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