From e6efaa025384f86a18814a6b9f4e5d54484ab9ff Mon Sep 17 00:00:00 2001 From: Huang Ying Date: Thu, 18 Jun 2009 19:33:57 +0800 Subject: [PATCH] crypto: aes-ni - Fix cbc mode IV saving Original implementation of aesni_cbc_dec do not save IV if input length % 4 == 0. This will make decryption of next block failed. Signed-off-by: Huang Ying Signed-off-by: Herbert Xu --- arch/x86/crypto/aesni-intel_asm.S | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S index caba99601703..eb0566e83319 100644 --- a/arch/x86/crypto/aesni-intel_asm.S +++ b/arch/x86/crypto/aesni-intel_asm.S @@ -845,7 +845,7 @@ ENTRY(aesni_cbc_enc) */ ENTRY(aesni_cbc_dec) cmp $16, LEN - jb .Lcbc_dec_ret + jb .Lcbc_dec_just_ret mov 480(KEYP), KLEN add $240, KEYP movups (IVP), IV @@ -891,6 +891,7 @@ ENTRY(aesni_cbc_dec) add $16, OUTP cmp $16, LEN jge .Lcbc_dec_loop1 - movups IV, (IVP) .Lcbc_dec_ret: + movups IV, (IVP) +.Lcbc_dec_just_ret: ret -- 2.20.1