X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=crypto%2Fghash-generic.c;h=7835b8fc94db6d69b9e93c1806d677e8ea390736;hb=1442d1678ca7e53574fd403ba7bee6f4125d920c;hp=be4425616931ffcf0f1747aa752d76f15379c989;hpb=6f5071020d5ec89b5d095aa488db604adb921aec;p=deliverable%2Flinux.git

diff --git a/crypto/ghash-generic.c b/crypto/ghash-generic.c
index be4425616931..7835b8fc94db 100644
--- a/crypto/ghash-generic.c
+++ b/crypto/ghash-generic.c
@@ -67,6 +67,9 @@ static int ghash_update(struct shash_desc *desc,
 	struct ghash_ctx *ctx = crypto_shash_ctx(desc->tfm);
 	u8 *dst = dctx->buffer;
 
+	if (!ctx->gf128)
+		return -ENOKEY;
+
 	if (dctx->bytes) {
 		int n = min(srclen, dctx->bytes);
 		u8 *pos = dst + (GHASH_BLOCK_SIZE - dctx->bytes);
@@ -119,6 +122,9 @@ static int ghash_final(struct shash_desc *desc, u8 *dst)
 	struct ghash_ctx *ctx = crypto_shash_ctx(desc->tfm);
 	u8 *buf = dctx->buffer;
 
+	if (!ctx->gf128)
+		return -ENOKEY;
+
 	ghash_flush(ctx, dctx);
 	memcpy(dst, buf, GHASH_BLOCK_SIZE);