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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-09 20:19:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-09 20:19:50 -0700
commitd02a9a89db3437467de45a451739e520877f4a48 (patch)
treea5cbd992bb3ee41470fbe6d5bbd16d4fdb960ef2 /crypto
parent49b442caa4ed719aa7e2522cdd5c8abf8607b860 (diff)
parentd47cbd5bcee7c7a08fc0283dda465375fa1b1fda (diff)
downloadlinux-linaro-stable-d02a9a89db3437467de45a451739e520877f4a48.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu: "This fixes a GCM bug that breaks IPsec and a compile problem in ux500." * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: ux500 - add missing comma crypto: gcm - fix assumption that assoc has one segment
Diffstat (limited to 'crypto')
-rw-r--r--crypto/gcm.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/crypto/gcm.c b/crypto/gcm.c
index 137ad1ec5438..13ccbda34ff9 100644
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -44,6 +44,7 @@ struct crypto_rfc4543_ctx {
struct crypto_rfc4543_req_ctx {
u8 auth_tag[16];
+ u8 assocbuf[32];
struct scatterlist cipher[1];
struct scatterlist payload[2];
struct scatterlist assoc[2];
@@ -1133,9 +1134,19 @@ static struct aead_request *crypto_rfc4543_crypt(struct aead_request *req,
scatterwalk_crypto_chain(payload, dst, vdst == req->iv + 8, 2);
assoclen += 8 + req->cryptlen - (enc ? 0 : authsize);
- sg_init_table(assoc, 2);
- sg_set_page(assoc, sg_page(req->assoc), req->assoc->length,
- req->assoc->offset);
+ if (req->assoc->length == req->assoclen) {
+ sg_init_table(assoc, 2);
+ sg_set_page(assoc, sg_page(req->assoc), req->assoc->length,
+ req->assoc->offset);
+ } else {
+ BUG_ON(req->assoclen > sizeof(rctx->assocbuf));
+
+ scatterwalk_map_and_copy(rctx->assocbuf, req->assoc, 0,
+ req->assoclen, 0);
+
+ sg_init_table(assoc, 2);
+ sg_set_buf(assoc, rctx->assocbuf, req->assoclen);
+ }
scatterwalk_crypto_chain(assoc, payload, 0, 2);
aead_request_set_tfm(subreq, ctx->child);