429 lines
16 KiB
C
429 lines
16 KiB
C
/* md32_common.h file used by sha256 implementation */
|
|
/* ====================================================================
|
|
* Copyright (c) 1999-2007 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
|
|
* OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
* ====================================================================
|
|
*
|
|
*/
|
|
|
|
/*-
|
|
* This is a generic 32 bit "collector" for message digest algorithms.
|
|
* Whenever needed it collects input character stream into chunks of
|
|
* 32 bit values and invokes a block function that performs actual hash
|
|
* calculations.
|
|
*
|
|
* Porting guide.
|
|
*
|
|
* Obligatory macros:
|
|
*
|
|
* DATA_ORDER_IS_BIG_ENDIAN or DATA_ORDER_IS_LITTLE_ENDIAN
|
|
* this macro defines byte order of input stream.
|
|
* HASH_CBLOCK
|
|
* size of a unit chunk HASH_BLOCK operates on.
|
|
* HASH_LONG
|
|
* has to be at lest 32 bit wide, if it's wider, then
|
|
* HASH_LONG_LOG2 *has to* be defined along
|
|
* HASH_CTX
|
|
* context structure that at least contains following
|
|
* members:
|
|
* typedef struct {
|
|
* ...
|
|
* HASH_LONG Nl,Nh;
|
|
* either {
|
|
* HASH_LONG data[HASH_LBLOCK];
|
|
* unsigned char data[HASH_CBLOCK];
|
|
* };
|
|
* unsigned int num;
|
|
* ...
|
|
* } HASH_CTX;
|
|
* data[] vector is expected to be zeroed upon first call to
|
|
* HASH_UPDATE.
|
|
* HASH_UPDATE
|
|
* name of "Update" function, implemented here.
|
|
* HASH_TRANSFORM
|
|
* name of "Transform" function, implemented here.
|
|
* HASH_FINAL
|
|
* name of "Final" function, implemented here.
|
|
* HASH_BLOCK_DATA_ORDER
|
|
* name of "block" function capable of treating *unaligned* input
|
|
* message in original (data) byte order, implemented externally.
|
|
* HASH_MAKE_STRING
|
|
* macro convering context variables to an ASCII hash string.
|
|
*
|
|
* MD5 example:
|
|
*
|
|
* #define DATA_ORDER_IS_LITTLE_ENDIAN
|
|
*
|
|
* #define HASH_LONG MD5_LONG
|
|
* #define HASH_LONG_LOG2 MD5_LONG_LOG2
|
|
* #define HASH_CTX MD5_CTX
|
|
* #define HASH_CBLOCK MD5_CBLOCK
|
|
* #define HASH_UPDATE MD5_Update
|
|
* #define HASH_TRANSFORM MD5_Transform
|
|
* #define HASH_FINAL MD5_Final
|
|
* #define HASH_BLOCK_DATA_ORDER md5_block_data_order
|
|
*
|
|
* <appro@fy.chalmers.se>
|
|
*/
|
|
|
|
#if !defined(DATA_ORDER_IS_BIG_ENDIAN) && !defined(DATA_ORDER_IS_LITTLE_ENDIAN)
|
|
# error "DATA_ORDER must be defined!"
|
|
#endif
|
|
|
|
#ifndef HASH_CBLOCK
|
|
# error "HASH_CBLOCK must be defined!"
|
|
#endif
|
|
#ifndef HASH_LONG
|
|
# error "HASH_LONG must be defined!"
|
|
#endif
|
|
#ifndef HASH_CTX
|
|
# error "HASH_CTX must be defined!"
|
|
#endif
|
|
|
|
#ifndef HASH_UPDATE
|
|
# error "HASH_UPDATE must be defined!"
|
|
#endif
|
|
#ifndef HASH_TRANSFORM
|
|
# error "HASH_TRANSFORM must be defined!"
|
|
#endif
|
|
#ifndef HASH_FINAL
|
|
# error "HASH_FINAL must be defined!"
|
|
#endif
|
|
|
|
#ifndef HASH_BLOCK_DATA_ORDER
|
|
# error "HASH_BLOCK_DATA_ORDER must be defined!"
|
|
#endif
|
|
|
|
/*
|
|
* Engage compiler specific rotate intrinsic function if available.
|
|
*/
|
|
#undef ROTATE
|
|
#ifndef PEDANTIC
|
|
# if defined(_MSC_VER)
|
|
# define ROTATE(a,n) _lrotl(a,n)
|
|
# elif defined(__ICC)
|
|
# define ROTATE(a,n) _rotl(a,n)
|
|
# elif defined(__MWERKS__)
|
|
# if defined(__POWERPC__)
|
|
# define ROTATE(a,n) __rlwinm(a,n,0,31)
|
|
# elif defined(__MC68K__)
|
|
/* Motorola specific tweak. <appro@fy.chalmers.se> */
|
|
# define ROTATE(a,n) ( n<24 ? __rol(a,n) : __ror(a,32-n) )
|
|
# else
|
|
# define ROTATE(a,n) __rol(a,n)
|
|
# endif
|
|
# elif defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
|
|
/*
|
|
* Some GNU C inline assembler templates. Note that these are
|
|
* rotates by *constant* number of bits! But that's exactly
|
|
* what we need here...
|
|
* <appro@fy.chalmers.se>
|
|
*/
|
|
# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
|
|
# define ROTATE(a,n) ({ register unsigned int ret; \
|
|
asm ( \
|
|
"roll %1,%0" \
|
|
: "=r"(ret) \
|
|
: "I"(n), "0"((unsigned int)(a)) \
|
|
: "cc"); \
|
|
ret; \
|
|
})
|
|
# elif defined(_ARCH_PPC) || defined(_ARCH_PPC64) || \
|
|
defined(__powerpc) || defined(__ppc__) || defined(__powerpc64__)
|
|
# define ROTATE(a,n) ({ register unsigned int ret; \
|
|
asm ( \
|
|
"rlwinm %0,%1,%2,0,31" \
|
|
: "=r"(ret) \
|
|
: "r"(a), "I"(n)); \
|
|
ret; \
|
|
})
|
|
# elif defined(__s390x__)
|
|
# define ROTATE(a,n) ({ register unsigned int ret; \
|
|
asm ("rll %0,%1,%2" \
|
|
: "=r"(ret) \
|
|
: "r"(a), "I"(n)); \
|
|
ret; \
|
|
})
|
|
# endif
|
|
# endif
|
|
#endif /* PEDANTIC */
|
|
|
|
#ifndef ROTATE
|
|
# define ROTATE(a,n) (((a)<<(n))|(((a)&0xffffffff)>>(32-(n))))
|
|
#endif
|
|
|
|
#if defined(DATA_ORDER_IS_BIG_ENDIAN)
|
|
|
|
# ifndef PEDANTIC
|
|
# if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
|
|
# if ((defined(__i386) || defined(__i386__)) && !defined(I386_ONLY)) || \
|
|
(defined(__x86_64) || defined(__x86_64__))
|
|
# if !defined(B_ENDIAN)
|
|
/*
|
|
* This gives ~30-40% performance improvement in SHA-256 compiled
|
|
* with gcc [on P4]. Well, first macro to be frank. We can pull
|
|
* this trick on x86* platforms only, because these CPUs can fetch
|
|
* unaligned data without raising an exception.
|
|
*/
|
|
# define HOST_c2l(c,l) ({ unsigned int r=*((const unsigned int *)(c)); \
|
|
asm ("bswapl %0":"=r"(r):"0"(r)); \
|
|
(c)+=4; (l)=r; })
|
|
# define HOST_l2c(l,c) ({ unsigned int r=(l); \
|
|
asm ("bswapl %0":"=r"(r):"0"(r)); \
|
|
*((unsigned int *)(c))=r; (c)+=4; r; })
|
|
# endif
|
|
# elif defined(__aarch64__)
|
|
# if defined(__BYTE_ORDER__)
|
|
# if defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__
|
|
# define HOST_c2l(c,l) ({ unsigned int r; \
|
|
asm ("rev %w0,%w1" \
|
|
:"=r"(r) \
|
|
:"r"(*((const unsigned int *)(c))));\
|
|
(c)+=4; (l)=r; })
|
|
# define HOST_l2c(l,c) ({ unsigned int r; \
|
|
asm ("rev %w0,%w1" \
|
|
:"=r"(r) \
|
|
:"r"((unsigned int)(l)));\
|
|
*((unsigned int *)(c))=r; (c)+=4; r; })
|
|
# elif defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__==__ORDER_BIG_ENDIAN__
|
|
# define HOST_c2l(c,l) ((l)=*((const unsigned int *)(c)), (c)+=4, (l))
|
|
# define HOST_l2c(l,c) (*((unsigned int *)(c))=(l), (c)+=4, (l))
|
|
# endif
|
|
# endif
|
|
# endif
|
|
# endif
|
|
# if defined(__s390__) || defined(__s390x__)
|
|
# define HOST_c2l(c,l) ((l)=*((const unsigned int *)(c)), (c)+=4, (l))
|
|
# define HOST_l2c(l,c) (*((unsigned int *)(c))=(l), (c)+=4, (l))
|
|
# endif
|
|
# endif
|
|
|
|
# ifndef HOST_c2l
|
|
# define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++)))<<24), \
|
|
l|=(((unsigned long)(*((c)++)))<<16), \
|
|
l|=(((unsigned long)(*((c)++)))<< 8), \
|
|
l|=(((unsigned long)(*((c)++))) ) )
|
|
# endif
|
|
# ifndef HOST_l2c
|
|
# define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
|
|
*((c)++)=(unsigned char)(((l) )&0xff), \
|
|
l)
|
|
# endif
|
|
|
|
#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
|
|
|
|
# ifndef PEDANTIC
|
|
# if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
|
|
# if defined(__s390x__)
|
|
# define HOST_c2l(c,l) ({ asm ("lrv %0,%1" \
|
|
:"=d"(l) :"m"(*(const unsigned int *)(c)));\
|
|
(c)+=4; (l); })
|
|
# define HOST_l2c(l,c) ({ asm ("strv %1,%0" \
|
|
:"=m"(*(unsigned int *)(c)) :"d"(l));\
|
|
(c)+=4; (l); })
|
|
# endif
|
|
# endif
|
|
# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
|
|
# ifndef B_ENDIAN
|
|
/* See comment in DATA_ORDER_IS_BIG_ENDIAN section. */
|
|
# define HOST_c2l(c,l) ((l)=*((const unsigned int *)(c)), (c)+=4, l)
|
|
# define HOST_l2c(l,c) (*((unsigned int *)(c))=(l), (c)+=4, l)
|
|
# endif
|
|
# endif
|
|
# endif
|
|
|
|
# ifndef HOST_c2l
|
|
# define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++))) ), \
|
|
l|=(((unsigned long)(*((c)++)))<< 8), \
|
|
l|=(((unsigned long)(*((c)++)))<<16), \
|
|
l|=(((unsigned long)(*((c)++)))<<24) )
|
|
# endif
|
|
# ifndef HOST_l2c
|
|
# define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>>16)&0xff), \
|
|
*((c)++)=(unsigned char)(((l)>>24)&0xff), \
|
|
l)
|
|
# endif
|
|
|
|
#endif
|
|
|
|
/*
|
|
* Time for some action:-)
|
|
*/
|
|
|
|
int HASH_UPDATE(HASH_CTX *c, const void *data_, size_t len)
|
|
{
|
|
const unsigned char *data = data_;
|
|
unsigned char *p;
|
|
HASH_LONG l;
|
|
size_t n;
|
|
|
|
if (len == 0)
|
|
return 1;
|
|
|
|
l = (c->Nl + (((HASH_LONG) len) << 3)) & 0xffffffffUL;
|
|
/*
|
|
* 95-05-24 eay Fixed a bug with the overflow handling, thanks to Wei Dai
|
|
* <weidai@eskimo.com> for pointing it out.
|
|
*/
|
|
if (l < c->Nl) /* overflow */
|
|
c->Nh++;
|
|
c->Nh += (HASH_LONG) (len >> 29); /* might cause compiler warning on
|
|
* 16-bit */
|
|
c->Nl = l;
|
|
|
|
n = c->num;
|
|
if (n != 0) {
|
|
p = (unsigned char *)c->data;
|
|
|
|
if (len >= HASH_CBLOCK || len + n >= HASH_CBLOCK) {
|
|
memcpy(p + n, data, HASH_CBLOCK - n);
|
|
HASH_BLOCK_DATA_ORDER(c, p, 1);
|
|
n = HASH_CBLOCK - n;
|
|
data += n;
|
|
len -= n;
|
|
c->num = 0;
|
|
memset(p, 0, HASH_CBLOCK); /* keep it zeroed */
|
|
} else {
|
|
memcpy(p + n, data, len);
|
|
c->num += (unsigned int)len;
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
n = len / HASH_CBLOCK;
|
|
if (n > 0) {
|
|
HASH_BLOCK_DATA_ORDER(c, data, n);
|
|
n *= HASH_CBLOCK;
|
|
data += n;
|
|
len -= n;
|
|
}
|
|
|
|
if (len != 0) {
|
|
p = (unsigned char *)c->data;
|
|
c->num = (unsigned int)len;
|
|
memcpy(p, data, len);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void HASH_TRANSFORM(HASH_CTX *c, const unsigned char *data)
|
|
{
|
|
HASH_BLOCK_DATA_ORDER(c, data, 1);
|
|
}
|
|
|
|
int HASH_FINAL(unsigned char *md, HASH_CTX *c)
|
|
{
|
|
unsigned char *p = (unsigned char *)c->data;
|
|
size_t n = c->num;
|
|
|
|
p[n] = 0x80; /* there is always room for one */
|
|
n++;
|
|
|
|
if (n > (HASH_CBLOCK - 8)) {
|
|
memset(p + n, 0, HASH_CBLOCK - n);
|
|
n = 0;
|
|
HASH_BLOCK_DATA_ORDER(c, p, 1);
|
|
}
|
|
memset(p + n, 0, HASH_CBLOCK - 8 - n);
|
|
|
|
p += HASH_CBLOCK - 8;
|
|
#if defined(DATA_ORDER_IS_BIG_ENDIAN)
|
|
(void)HOST_l2c(c->Nh, p);
|
|
(void)HOST_l2c(c->Nl, p);
|
|
#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
|
|
(void)HOST_l2c(c->Nl, p);
|
|
(void)HOST_l2c(c->Nh, p);
|
|
#endif
|
|
p -= HASH_CBLOCK;
|
|
HASH_BLOCK_DATA_ORDER(c, p, 1);
|
|
c->num = 0;
|
|
memset(p, 0, HASH_CBLOCK);
|
|
|
|
#ifndef HASH_MAKE_STRING
|
|
# error "HASH_MAKE_STRING must be defined!"
|
|
#else
|
|
HASH_MAKE_STRING(c, md);
|
|
#endif
|
|
|
|
return 1;
|
|
}
|
|
|
|
#ifndef MD32_REG_T
|
|
# if defined(__alpha) || defined(__sparcv9) || defined(__mips)
|
|
# define MD32_REG_T long
|
|
/*
|
|
* This comment was originaly written for MD5, which is why it
|
|
* discusses A-D. But it basically applies to all 32-bit digests,
|
|
* which is why it was moved to common header file.
|
|
*
|
|
* In case you wonder why A-D are declared as long and not
|
|
* as MD5_LONG. Doing so results in slight performance
|
|
* boost on LP64 architectures. The catch is we don't
|
|
* really care if 32 MSBs of a 64-bit register get polluted
|
|
* with eventual overflows as we *save* only 32 LSBs in
|
|
* *either* case. Now declaring 'em long excuses the compiler
|
|
* from keeping 32 MSBs zeroed resulting in 13% performance
|
|
* improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
|
|
* Well, to be honest it should say that this *prevents*
|
|
* performance degradation.
|
|
* <appro@fy.chalmers.se>
|
|
*/
|
|
# else
|
|
/*
|
|
* Above is not absolute and there are LP64 compilers that
|
|
* generate better code if MD32_REG_T is defined int. The above
|
|
* pre-processor condition reflects the circumstances under which
|
|
* the conclusion was made and is subject to further extension.
|
|
* <appro@fy.chalmers.se>
|
|
*/
|
|
# define MD32_REG_T int
|
|
# endif
|
|
#endif
|