From 54b7ed2c3f3a6d73cbaf880ea83395abe2a10fb7 Mon Sep 17 00:00:00 2001 From: Tom Lendacky Date: Tue, 12 Nov 2013 11:46:04 -0600 Subject: crypto: authenc - Find proper IV address in ablkcipher callback When performing an asynchronous ablkcipher operation the authenc completion callback routine is invoked, but it does not locate and use the proper IV. The callback routine, crypto_authenc_encrypt_done, is updated to use the same method of calculating the address of the IV as is done in crypto_authenc_encrypt function which sets up the callback. Cc: stable@vger.kernel.org Signed-off-by: Tom Lendacky Signed-off-by: Herbert Xu --- crypto/authenc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'crypto/authenc.c') diff --git a/crypto/authenc.c b/crypto/authenc.c index 1875e702..e1223559 100644 --- a/crypto/authenc.c +++ b/crypto/authenc.c @@ -380,9 +380,10 @@ static void crypto_authenc_encrypt_done(struct crypto_async_request *req, if (!err) { struct crypto_aead *authenc = crypto_aead_reqtfm(areq); struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); - struct ablkcipher_request *abreq = aead_request_ctx(areq); - u8 *iv = (u8 *)(abreq + 1) + - crypto_ablkcipher_reqsize(ctx->enc); + struct authenc_request_ctx *areq_ctx = aead_request_ctx(areq); + struct ablkcipher_request *abreq = (void *)(areq_ctx->tail + + ctx->reqoff); + u8 *iv = (u8 *)abreq - crypto_ablkcipher_ivsize(ctx->enc); err = crypto_authenc_genicv(areq, iv, 0); } -- cgit v1.2.3