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crypto: echainiv - Copy AD along with plain text

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As the AD does not necessarily exist in the destination buffer
it must be copied along with the plain text.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2015-05-27 14:37:31 +08:00
parent 6350449fbf
commit 838c9d561a
1 changed files with 2 additions and 8 deletions
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10
crypto/echainiv.c
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@ -228,19 +228,13 @@ static int echainiv_encrypt(struct aead_request *req)
info = req->iv; info = req->iv;
if (req->src != req->dst) { if (req->src != req->dst) {
struct scatterlist src[2];
struct scatterlist dst[2];
struct blkcipher_desc desc = { struct blkcipher_desc desc = {
.tfm = ctx->null, .tfm = ctx->null,
}; };
err = crypto_blkcipher_encrypt( err = crypto_blkcipher_encrypt(
&desc, &desc, req->dst, req->src,
scatterwalk_ffwd(dst, req->dst, req->assoclen + req->cryptlen);
req->assoclen + ivsize),
scatterwalk_ffwd(src, req->src,
req->assoclen + ivsize),
req->cryptlen - ivsize);
if (err) if (err)
return err; return err;
} }