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crypto: arm64/aes-ce-ccm - Fix AEAD decryption length

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This patch fixes the ARM64 CE CCM implementation decryption by
using skcipher_walk_aead_decrypt instead of skcipher_walk_aead,
which ensures the correct length is used when doing the walk.

Fixes: cf2c0fe740 ("crypto: aes-ce-ccm - Use skcipher walk interface")
Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2016-11-30 21:17:24 +08:00
parent ff330f7348
commit 0be8a270b3
1 changed files with 2 additions and 2 deletions
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4
arch/arm64/crypto/aes-ce-ccm-glue.c
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@ -167,7 +167,7 @@ static int ccm_encrypt(struct aead_request *req)
/* preserve the original iv for the final round */
memcpy(buf, req->iv, AES_BLOCK_SIZE);
err = skcipher_walk_aead(&walk, req, true);
err = skcipher_walk_aead_encrypt(&walk, req, true);
while (walk.nbytes) {
u32 tail = walk.nbytes % AES_BLOCK_SIZE;
@ -219,7 +219,7 @@ static int ccm_decrypt(struct aead_request *req)
/* preserve the original iv for the final round */
memcpy(buf, req->iv, AES_BLOCK_SIZE);
err = skcipher_walk_aead(&walk, req, true);
err = skcipher_walk_aead_decrypt(&walk, req, true);
while (walk.nbytes) {
u32 tail = walk.nbytes % AES_BLOCK_SIZE;