From c03a509304954c5ed58ac9c607e20f1b55f88a28 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Thu, 22 Aug 2019 18:47:31 +0300 Subject: crypto: ccp - invoke fallback for XTS ciphertext stealing For correctness and compliance with the XTS-AES specification, we are adding support for ciphertext stealing to XTS implementations, even though no use cases are known that will be enabled by this. Since the ccp driver already has a fallback skcipher standby for dealing with input sizes other than [16, 512, 1024, 2048, 4096], just drop the check against the block size. Cc: Tom Lendacky Cc: Gary Hook Signed-off-by: Ard Biesheuvel Signed-off-by: Herbert Xu --- drivers/crypto/ccp/ccp-crypto-aes-xts.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers/crypto/ccp/ccp-crypto-aes-xts.c') diff --git a/drivers/crypto/ccp/ccp-crypto-aes-xts.c b/drivers/crypto/ccp/ccp-crypto-aes-xts.c index 783ba75e0618..8e4a531f4f70 100644 --- a/drivers/crypto/ccp/ccp-crypto-aes-xts.c +++ b/drivers/crypto/ccp/ccp-crypto-aes-xts.c @@ -116,9 +116,6 @@ static int ccp_aes_xts_crypt(struct ablkcipher_request *req, if (!ctx->u.aes.key_len) return -EINVAL; - if (req->nbytes & (AES_BLOCK_SIZE - 1)) - return -EINVAL; - if (!req->info) return -EINVAL; -- cgit 1.4.1