freebsd-ports/security/cryptopp/files/patch-sha.cpp
Xin LI f606d8f659 Apply a vendor fix to sha256 which prevents cryptopp from generating
correct hash if input is not properly aligned. (r470).
2010-01-30 02:56:46 +00:00

40 lines
1.1 KiB
C++

--- ./sha.cpp.orig 2009-03-15 02:48:00.000000000 -0700
+++ ./sha.cpp 2010-01-29 18:49:49.247445242 -0800
@@ -273,14 +273,15 @@
#endif
AS2( mov STATE_SAVE, WORD_REG(cx))
AS2( mov DATA_SAVE, WORD_REG(dx))
- AS2( add WORD_REG(di), WORD_REG(dx))
- AS2( mov DATA_END, WORD_REG(di))
+ AS2( lea WORD_REG(ax), [WORD_REG(di) + WORD_REG(dx)])
+ AS2( mov DATA_END, WORD_REG(ax))
AS2( mov K_END, WORD_REG(si))
#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
#if CRYPTOPP_BOOL_X86
AS2( test edi, 1)
ASJ( jnz, 2, f)
+ AS1( dec DWORD PTR K_END)
#endif
AS2( movdqa xmm0, XMMWORD_PTR [WORD_REG(cx)+0*16])
AS2( movdqa xmm1, XMMWORD_PTR [WORD_REG(cx)+1*16])
@@ -355,7 +356,7 @@
ROUND(14, 1, eax, ecx, edi, edx)
ROUND(15, 1, ecx, eax, edx, edi)
AS2( cmp WORD_REG(si), K_END)
- ASJ( jne, 1, b)
+ ASJ( jl, 1, b)
AS2( mov WORD_REG(dx), DATA_SAVE)
AS2( add WORD_REG(dx), 64)
@@ -364,8 +365,8 @@
#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
#if CRYPTOPP_BOOL_X86
- AS2( test DWORD PTR DATA_END, 1)
- ASJ( jnz, 4, f)
+ AS2( test DWORD PTR K_END, 1)
+ ASJ( jz, 4, f)
#endif
AS2( movdqa xmm1, XMMWORD_PTR [AS_REG_7+1*16])
AS2( movdqa xmm0, XMMWORD_PTR [AS_REG_7+0*16])