minetest
/
minetest
mirror of https://github.com/minetest/minetest.git
1
0
Fork 0
Code Issues Releases Wiki Activity

Replace SHA256 implementation with one from LibreSSL 

They have cleaner code than OpenSSL :)

from here: https://github.com/libressl/openbsd/tree/master/src/lib/libcrypto
and https://github.com/libressl/portable
This commit is contained in:
sfan5 2024-01-15 21:26:24 +01:00
parent b0f76d82c5
commit 5ceb327e55
4 changed files with 580 additions and 880 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

430
src/util/md32_common.h
View File

@ -1,430 +0,0 @@
/* 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>
*/
#pragma once
#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 = (const unsigned char *)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

851
src/util/sha256.c
View File

@ -1,149 +1,222 @@
/* crypto/sha/sha256.c */
/* libcrypto/sha/sha256.c */
/* ====================================================================
* Copyright (c) 2004 The OpenSSL Project. All rights reserved
* according to the OpenSSL license [found in ../../LICENSE].
* Copyright (c) 1998-2011 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
* openssl-core@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 product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*/
# include <stdlib.h>
# include <string.h>
# include <util/sha2.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
# define OPENSSL_VERSION_TEXT "OpenSSL 1.0.2a 19 Mar 2015"
# define OPENSSL_VERSION_PTEXT " part of " OPENSSL_VERSION_TEXT
#include "util/sha256.h"
const char SHA256_version[] = "SHA-256" OPENSSL_VERSION_PTEXT;
#if defined(_MSC_VER) && !defined(__clang__) && !defined(__attribute__)
#define __attribute__(a)
#endif
/* mem_clr.c */
unsigned static char cleanse_ctr = 0;
static void OPENSSL_cleanse(void *ptr, size_t len)
{
unsigned char *p = (unsigned char *)ptr;
size_t loop = len, ctr = cleanse_ctr;
while (loop--) {
*(p++) = (unsigned char)ctr;
ctr += (17 + ((size_t)p & 0xF));
}
p = (unsigned char *)memchr(ptr, (unsigned char)ctr, len);
if (p)
ctr += (63 + (size_t)p);
cleanse_ctr = (unsigned char)ctr;
}
/* pull HAVE_ENDIAN_H from Minetest */
#include "config.h"
#if !HAVE_ENDIAN_H
#undef HAVE_ENDIAN_H
#endif
fips_md_init_ctx(SHA224, SHA256)
{
memset(c, 0, sizeof(*c));
c->h[0] = 0xc1059ed8UL;
c->h[1] = 0x367cd507UL;
c->h[2] = 0x3070dd17UL;
c->h[3] = 0xf70e5939UL;
c->h[4] = 0xffc00b31UL;
c->h[5] = 0x68581511UL;
c->h[6] = 0x64f98fa7UL;
c->h[7] = 0xbefa4fa4UL;
c->md_len = SHA224_DIGEST_LENGTH;
return 1;
}
fips_md_init(SHA256)
{
memset(c, 0, sizeof(*c));
c->h[0] = 0x6a09e667UL;
c->h[1] = 0xbb67ae85UL;
c->h[2] = 0x3c6ef372UL;
c->h[3] = 0xa54ff53aUL;
c->h[4] = 0x510e527fUL;
c->h[5] = 0x9b05688cUL;
c->h[6] = 0x1f83d9abUL;
c->h[7] = 0x5be0cd19UL;
c->md_len = SHA256_DIGEST_LENGTH;
return 1;
}
unsigned char *SHA224(const unsigned char *d, size_t n, unsigned char *md)
{
SHA256_CTX c;
static unsigned char m[SHA224_DIGEST_LENGTH];
if (md == NULL)
md = m;
SHA224_Init(&c);
SHA256_Update(&c, d, n);
SHA256_Final(md, &c);
OPENSSL_cleanse(&c, sizeof(c));
return (md);
}
unsigned char *SHA256(const unsigned char *d, size_t n, unsigned char *md)
{
SHA256_CTX c;
static unsigned char m[SHA256_DIGEST_LENGTH];
if (md == NULL)
md = m;
SHA256_Init(&c);
SHA256_Update(&c, d, n);
SHA256_Final(md, &c);
OPENSSL_cleanse(&c, sizeof(c));
return (md);
}
int SHA224_Update(SHA256_CTX *c, const void *data, size_t len)
{
return SHA256_Update(c, data, len);
}
int SHA224_Final(unsigned char *md, SHA256_CTX *c)
{
return SHA256_Final(md, c);
}
# define DATA_ORDER_IS_BIG_ENDIAN
# define HASH_LONG SHA_LONG
# define HASH_CTX SHA256_CTX
# define HASH_CBLOCK SHA_CBLOCK
/** endian.h **/
/*
* Note that FIPS180-2 discusses "Truncation of the Hash Function Output."
* default: case below covers for it. It's not clear however if it's
* permitted to truncate to amount of bytes not divisible by 4. I bet not,
* but if it is, then default: case shall be extended. For reference.
* Idea behind separate cases for pre-defined lenghts is to let the
* compiler decide if it's appropriate to unroll small loops.
* Public domain
* endian.h compatibility shim
*/
# define HASH_MAKE_STRING(c,s) do { \
unsigned long ll; \
unsigned int nn; \
switch ((c)->md_len) \
{ case SHA224_DIGEST_LENGTH: \
for (nn=0;nn<SHA224_DIGEST_LENGTH/4;nn++) \
{ ll=(c)->h[nn]; (void)HOST_l2c(ll,(s)); } \
break; \
case SHA256_DIGEST_LENGTH: \
for (nn=0;nn<SHA256_DIGEST_LENGTH/4;nn++) \
{ ll=(c)->h[nn]; (void)HOST_l2c(ll,(s)); } \
break; \
default: \
if ((c)->md_len > SHA256_DIGEST_LENGTH) \
return 0; \
for (nn=0;nn<(c)->md_len/4;nn++) \
{ ll=(c)->h[nn]; (void)HOST_l2c(ll,(s)); } \
break; \
} \
} while (0)
# define HASH_UPDATE SHA256_Update
# define HASH_TRANSFORM SHA256_Transform
# define HASH_FINAL SHA256_Final
# define HASH_BLOCK_DATA_ORDER sha256_block_data_order
# ifndef SHA256_ASM
static
# endif
void sha256_block_data_order(SHA256_CTX *ctx, const void *in, size_t num);
#if defined(_WIN32)
# include "md32_common.h"
#define LITTLE_ENDIAN 1234
#define BIG_ENDIAN 4321
#define PDP_ENDIAN 3412
/*
* Use GCC and Visual Studio compiler defines to determine endian.
*/
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define BYTE_ORDER LITTLE_ENDIAN
#else
#define BYTE_ORDER BIG_ENDIAN
#endif
#elif defined(HAVE_ENDIAN_H)
#include <endian.h>
#elif defined(__MACH__) && defined(__APPLE__)
#include <machine/endian.h>
#elif defined(__sun) || defined(_AIX) || defined(__hpux)
#include <arpa/nameser_compat.h>
#include <sys/types.h>
#elif defined(__sgi)
#include <standards.h>
#include <sys/endian.h>
#endif
#ifndef __STRICT_ALIGNMENT
#define __STRICT_ALIGNMENT
#if defined(__i386) || defined(__i386__) || defined(__x86_64) || \
defined(__x86_64__) || defined(__s390__) || defined(__s390x__) || \
defined(__aarch64__) || \
((defined(__arm__) || defined(__arm)) && __ARM_ARCH >= 6)
#undef __STRICT_ALIGNMENT
#endif
#endif
#if defined(__APPLE__) && !defined(HAVE_ENDIAN_H)
#include <libkern/OSByteOrder.h>
#define be16toh(x) OSSwapBigToHostInt16((x))
#define htobe16(x) OSSwapHostToBigInt16((x))
#define le32toh(x) OSSwapLittleToHostInt32((x))
#define be32toh(x) OSSwapBigToHostInt32((x))
#define htole32(x) OSSwapHostToLittleInt32(x)
#define htobe32(x) OSSwapHostToBigInt32(x)
#endif /* __APPLE__ && !HAVE_ENDIAN_H */
#if defined(_WIN32) && !defined(HAVE_ENDIAN_H)
#include <winsock2.h>
#define be16toh(x) ntohs((x))
#define htobe16(x) htons((x))
#define le32toh(x) (x)
#define be32toh(x) ntohl((x))
#define htole32(x) (x)
#define htobe32(x) ntohl((x))
#endif /* _WIN32 && !HAVE_ENDIAN_H */
#ifdef __linux__
#if !defined(betoh16)
#define betoh16(x) be16toh(x)
#endif
#if !defined(betoh32)
#define betoh32(x) be32toh(x)
#endif
#endif /* __linux__ */
#if defined(__FreeBSD__)
#if !defined(HAVE_ENDIAN_H)
#include <sys/endian.h>
#endif
#if !defined(betoh16)
#define betoh16(x) be16toh(x)
#endif
#if !defined(betoh32)
#define betoh32(x) be32toh(x)
#endif
#endif
#if defined(__NetBSD__)
#if !defined(betoh16)
#define betoh16(x) be16toh(x)
#endif
#if !defined(betoh32)
#define betoh32(x) be32toh(x)
#endif
#endif
#if defined(__sun)
#include <sys/byteorder.h>
#define be16toh(x) BE_16(x)
#define htobe16(x) BE_16(x)
#define le32toh(x) LE_32(x)
#define be32toh(x) BE_32(x)
#define htole32(x) LE_32(x)
#define htobe32(x) BE_32(x)
#endif
/** **/
/** libcrypto/crypto_internal.h **/
#define CTASSERT(x) \
extern char _ctassert[(x) ? 1 : -1] __attribute__((__unused__))
static inline uint32_t
crypto_load_be32toh(const uint8_t *src)
{
uint32_t v;
memcpy(&v, src, sizeof(v));
return be32toh(v);
}
static inline void
crypto_store_htobe32(uint8_t *dst, uint32_t v)
{
v = htobe32(v);
memcpy(dst, &v, sizeof(v));
}
static inline uint32_t
crypto_ror_u32(uint32_t v, size_t shift)
{
return (v << (32 - shift)) | (v >> shift);
}
/** **/
/** libcrypto/hidden/crypto_namespace.h **/
# define LCRYPTO_UNUSED(x)
# define LCRYPTO_USED(x)
# define LCRYPTO_ALIAS1(pre,x)
# define LCRYPTO_ALIAS(x)
/** **/
/* Ensure that SHA_LONG and uint32_t are equivalent. */
CTASSERT(sizeof(SHA_LONG) == sizeof(uint32_t));
static void sha256_block_data_order(SHA256_CTX *ctx, const void *_in, size_t num);
# ifndef SHA256_ASM
static const SHA_LONG K256[64] = {
0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL,
0x3956c25bUL, 0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL,
@ -160,118 +233,84 @@ static const SHA_LONG K256[64] = {
0x19a4c116UL, 0x1e376c08UL, 0x2748774cUL, 0x34b0bcb5UL,
0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL, 0x682e6ff3UL,
0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL,
};
/*
* FIPS specification refers to right rotations, while our ROTATE macro
* is left one. This is why you might notice that rotation coefficients
* differ from those observed in FIPS document by 32-N...
*/
# define Sigma0(x) (ROTATE((x),30) ^ ROTATE((x),19) ^ ROTATE((x),10))
# define Sigma1(x) (ROTATE((x),26) ^ ROTATE((x),21) ^ ROTATE((x),7))
# define sigma0(x) (ROTATE((x),25) ^ ROTATE((x),14) ^ ((x)>>3))
# define sigma1(x) (ROTATE((x),15) ^ ROTATE((x),13) ^ ((x)>>10))
# define Ch(x,y,z) (((x) & (y)) ^ ((~(x)) & (z)))
# define Maj(x,y,z) (((x) & (y)) ^ ((x) & (z)) ^ ((y) & (z)))
# ifdef OPENSSL_SMALL_FOOTPRINT
static void sha256_block_data_order(SHA256_CTX *ctx, const void *in,
size_t num)
static inline SHA_LONG
Sigma0(SHA_LONG x)
{
unsigned MD32_REG_T a, b, c, d, e, f, g, h, s0, s1, T1, T2;
SHA_LONG X[16], l;
int i;
const unsigned char *data = in;
while (num--) {
a = ctx->h[0];
b = ctx->h[1];
c = ctx->h[2];
d = ctx->h[3];
e = ctx->h[4];
f = ctx->h[5];
g = ctx->h[6];
h = ctx->h[7];
for (i = 0; i < 16; i++) {
HOST_c2l(data, l);
T1 = X[i] = l;
T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i];
T2 = Sigma0(a) + Maj(a, b, c);
h = g;
g = f;
f = e;
e = d + T1;
d = c;
c = b;
b = a;
a = T1 + T2;
}
for (; i < 64; i++) {
s0 = X[(i + 1) & 0x0f];
s0 = sigma0(s0);
s1 = X[(i + 14) & 0x0f];
s1 = sigma1(s1);
T1 = X[i & 0xf] += s0 + s1 + X[(i + 9) & 0xf];
T1 += h + Sigma1(e) + Ch(e, f, g) + K256[i];
T2 = Sigma0(a) + Maj(a, b, c);
h = g;
g = f;
f = e;
e = d + T1;
d = c;
c = b;
b = a;
a = T1 + T2;
}
ctx->h[0] += a;
ctx->h[1] += b;
ctx->h[2] += c;
ctx->h[3] += d;
ctx->h[4] += e;
ctx->h[5] += f;
ctx->h[6] += g;
ctx->h[7] += h;
}
return crypto_ror_u32(x, 2) ^ crypto_ror_u32(x, 13) ^
crypto_ror_u32(x, 22);
}
# else
# define ROUND_00_15(i,a,b,c,d,e,f,g,h) do { \
T1 += h + Sigma1(e) + Ch(e,f,g) + K256[i]; \
h = Sigma0(a) + Maj(a,b,c); \
d += T1; h += T1; } while (0)
# define ROUND_16_63(i,a,b,c,d,e,f,g,h,X) do { \
s0 = X[(i+1)&0x0f]; s0 = sigma0(s0); \
s1 = X[(i+14)&0x0f]; s1 = sigma1(s1); \
T1 = X[(i)&0x0f] += s0 + s1 + X[(i+9)&0x0f]; \
ROUND_00_15(i,a,b,c,d,e,f,g,h); } while (0)
static void sha256_block_data_order(SHA256_CTX *ctx, const void *in,
size_t num)
static inline SHA_LONG
Sigma1(SHA_LONG x)
{
unsigned MD32_REG_T a, b, c, d, e, f, g, h, s0, s1, T1;
return crypto_ror_u32(x, 6) ^ crypto_ror_u32(x, 11) ^
crypto_ror_u32(x, 25);
}
static inline SHA_LONG
sigma0(SHA_LONG x)
{
return crypto_ror_u32(x, 7) ^ crypto_ror_u32(x, 18) ^ (x >> 3);
}
static inline SHA_LONG
sigma1(SHA_LONG x)
{
return crypto_ror_u32(x, 17) ^ crypto_ror_u32(x, 19) ^ (x >> 10);
}
static inline SHA_LONG
Ch(SHA_LONG x, SHA_LONG y, SHA_LONG z)
{
return (x & y) ^ (~x & z);
}
static inline SHA_LONG
Maj(SHA_LONG x, SHA_LONG y, SHA_LONG z)
{
return (x & y) ^ (x & z) ^ (y & z);
}
static inline void
sha256_msg_schedule_update(SHA_LONG *W0, SHA_LONG W1,
SHA_LONG W9, SHA_LONG W14)
{
*W0 = sigma1(W14) + W9 + sigma0(W1) + *W0;
}
static inline void
sha256_round(SHA_LONG *a, SHA_LONG *b, SHA_LONG *c, SHA_LONG *d,
SHA_LONG *e, SHA_LONG *f, SHA_LONG *g, SHA_LONG *h,
SHA_LONG Kt, SHA_LONG Wt)
{
SHA_LONG T1, T2;
T1 = *h + Sigma1(*e) + Ch(*e, *f, *g) + Kt + Wt;
T2 = Sigma0(*a) + Maj(*a, *b, *c);
*h = *g;
*g = *f;
*f = *e;
*e = *d + T1;
*d = *c;
*c = *b;
*b = *a;
*a = T1 + T2;
}
static void
sha256_block_data_order(SHA256_CTX *ctx, const void *_in, size_t num)
{
const uint8_t *in = _in;
const SHA_LONG *in32;
SHA_LONG a, b, c, d, e, f, g, h;
SHA_LONG X[16];
int i;
const unsigned char *data = (const unsigned char *)in;
const union {
long one;
char little;
} is_endian = {
1
};
while (num--) {
a = ctx->h[0];
b = ctx->h[1];
c = ctx->h[2];
@ -281,106 +320,97 @@ static void sha256_block_data_order(SHA256_CTX *ctx, const void *in,
g = ctx->h[6];
h = ctx->h[7];
if (!is_endian.little && sizeof(SHA_LONG) == 4
&& ((size_t)in % 4) == 0) {
const SHA_LONG *W = (const SHA_LONG *)data;
T1 = X[0] = W[0];
ROUND_00_15(0, a, b, c, d, e, f, g, h);
T1 = X[1] = W[1];
ROUND_00_15(1, h, a, b, c, d, e, f, g);
T1 = X[2] = W[2];
ROUND_00_15(2, g, h, a, b, c, d, e, f);
T1 = X[3] = W[3];
ROUND_00_15(3, f, g, h, a, b, c, d, e);
T1 = X[4] = W[4];
ROUND_00_15(4, e, f, g, h, a, b, c, d);
T1 = X[5] = W[5];
ROUND_00_15(5, d, e, f, g, h, a, b, c);
T1 = X[6] = W[6];
ROUND_00_15(6, c, d, e, f, g, h, a, b);
T1 = X[7] = W[7];
ROUND_00_15(7, b, c, d, e, f, g, h, a);
T1 = X[8] = W[8];
ROUND_00_15(8, a, b, c, d, e, f, g, h);
T1 = X[9] = W[9];
ROUND_00_15(9, h, a, b, c, d, e, f, g);
T1 = X[10] = W[10];
ROUND_00_15(10, g, h, a, b, c, d, e, f);
T1 = X[11] = W[11];
ROUND_00_15(11, f, g, h, a, b, c, d, e);
T1 = X[12] = W[12];
ROUND_00_15(12, e, f, g, h, a, b, c, d);
T1 = X[13] = W[13];
ROUND_00_15(13, d, e, f, g, h, a, b, c);
T1 = X[14] = W[14];
ROUND_00_15(14, c, d, e, f, g, h, a, b);
T1 = X[15] = W[15];
ROUND_00_15(15, b, c, d, e, f, g, h, a);
data += SHA256_CBLOCK;
if ((size_t)in % 4 == 0) {
/* Input is 32 bit aligned. */
in32 = (const SHA_LONG *)in;
X[0] = be32toh(in32[0]);
X[1] = be32toh(in32[1]);
X[2] = be32toh(in32[2]);
X[3] = be32toh(in32[3]);
X[4] = be32toh(in32[4]);
X[5] = be32toh(in32[5]);
X[6] = be32toh(in32[6]);
X[7] = be32toh(in32[7]);
X[8] = be32toh(in32[8]);
X[9] = be32toh(in32[9]);
X[10] = be32toh(in32[10]);
X[11] = be32toh(in32[11]);
X[12] = be32toh(in32[12]);
X[13] = be32toh(in32[13]);
X[14] = be32toh(in32[14]);
X[15] = be32toh(in32[15]);
} else {
SHA_LONG l;
HOST_c2l(data, l);
T1 = X[0] = l;
ROUND_00_15(0, a, b, c, d, e, f, g, h);
HOST_c2l(data, l);
T1 = X[1] = l;
ROUND_00_15(1, h, a, b, c, d, e, f, g);
HOST_c2l(data, l);
T1 = X[2] = l;
ROUND_00_15(2, g, h, a, b, c, d, e, f);
HOST_c2l(data, l);
T1 = X[3] = l;
ROUND_00_15(3, f, g, h, a, b, c, d, e);
HOST_c2l(data, l);
T1 = X[4] = l;
ROUND_00_15(4, e, f, g, h, a, b, c, d);
HOST_c2l(data, l);
T1 = X[5] = l;
ROUND_00_15(5, d, e, f, g, h, a, b, c);
HOST_c2l(data, l);
T1 = X[6] = l;
ROUND_00_15(6, c, d, e, f, g, h, a, b);
HOST_c2l(data, l);
T1 = X[7] = l;
ROUND_00_15(7, b, c, d, e, f, g, h, a);
HOST_c2l(data, l);
T1 = X[8] = l;
ROUND_00_15(8, a, b, c, d, e, f, g, h);
HOST_c2l(data, l);
T1 = X[9] = l;
ROUND_00_15(9, h, a, b, c, d, e, f, g);
HOST_c2l(data, l);
T1 = X[10] = l;
ROUND_00_15(10, g, h, a, b, c, d, e, f);
HOST_c2l(data, l);
T1 = X[11] = l;
ROUND_00_15(11, f, g, h, a, b, c, d, e);
HOST_c2l(data, l);
T1 = X[12] = l;
ROUND_00_15(12, e, f, g, h, a, b, c, d);
HOST_c2l(data, l);
T1 = X[13] = l;
ROUND_00_15(13, d, e, f, g, h, a, b, c);
HOST_c2l(data, l);
T1 = X[14] = l;
ROUND_00_15(14, c, d, e, f, g, h, a, b);
HOST_c2l(data, l);
T1 = X[15] = l;
ROUND_00_15(15, b, c, d, e, f, g, h, a);
/* Input is not 32 bit aligned. */
X[0] = crypto_load_be32toh(&in[0 * 4]);
X[1] = crypto_load_be32toh(&in[1 * 4]);
X[2] = crypto_load_be32toh(&in[2 * 4]);
X[3] = crypto_load_be32toh(&in[3 * 4]);
X[4] = crypto_load_be32toh(&in[4 * 4]);
X[5] = crypto_load_be32toh(&in[5 * 4]);
X[6] = crypto_load_be32toh(&in[6 * 4]);
X[7] = crypto_load_be32toh(&in[7 * 4]);
X[8] = crypto_load_be32toh(&in[8 * 4]);
X[9] = crypto_load_be32toh(&in[9 * 4]);
X[10] = crypto_load_be32toh(&in[10 * 4]);
X[11] = crypto_load_be32toh(&in[11 * 4]);
X[12] = crypto_load_be32toh(&in[12 * 4]);
X[13] = crypto_load_be32toh(&in[13 * 4]);
X[14] = crypto_load_be32toh(&in[14 * 4]);
X[15] = crypto_load_be32toh(&in[15 * 4]);
}
in += SHA256_CBLOCK;
for (i = 16; i < 64; i += 8) {
ROUND_16_63(i + 0, a, b, c, d, e, f, g, h, X);
ROUND_16_63(i + 1, h, a, b, c, d, e, f, g, X);
ROUND_16_63(i + 2, g, h, a, b, c, d, e, f, X);
ROUND_16_63(i + 3, f, g, h, a, b, c, d, e, X);
ROUND_16_63(i + 4, e, f, g, h, a, b, c, d, X);
ROUND_16_63(i + 5, d, e, f, g, h, a, b, c, X);
ROUND_16_63(i + 6, c, d, e, f, g, h, a, b, X);
ROUND_16_63(i + 7, b, c, d, e, f, g, h, a, X);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[0], X[0]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[1], X[1]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[2], X[2]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[3], X[3]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[4], X[4]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[5], X[5]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[6], X[6]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[7], X[7]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[8], X[8]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[9], X[9]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[10], X[10]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[11], X[11]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[12], X[12]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[13], X[13]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[14], X[14]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[15], X[15]);
for (i = 16; i < 64; i += 16) {
sha256_msg_schedule_update(&X[0], X[1], X[9], X[14]);
sha256_msg_schedule_update(&X[1], X[2], X[10], X[15]);
sha256_msg_schedule_update(&X[2], X[3], X[11], X[0]);
sha256_msg_schedule_update(&X[3], X[4], X[12], X[1]);
sha256_msg_schedule_update(&X[4], X[5], X[13], X[2]);
sha256_msg_schedule_update(&X[5], X[6], X[14], X[3]);
sha256_msg_schedule_update(&X[6], X[7], X[15], X[4]);
sha256_msg_schedule_update(&X[7], X[8], X[0], X[5]);
sha256_msg_schedule_update(&X[8], X[9], X[1], X[6]);
sha256_msg_schedule_update(&X[9], X[10], X[2], X[7]);
sha256_msg_schedule_update(&X[10], X[11], X[3], X[8]);
sha256_msg_schedule_update(&X[11], X[12], X[4], X[9]);
sha256_msg_schedule_update(&X[12], X[13], X[5], X[10]);
sha256_msg_schedule_update(&X[13], X[14], X[6], X[11]);
sha256_msg_schedule_update(&X[14], X[15], X[7], X[12]);
sha256_msg_schedule_update(&X[15], X[0], X[8], X[13]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 0], X[0]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 1], X[1]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 2], X[2]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 3], X[3]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 4], X[4]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 5], X[5]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 6], X[6]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 7], X[7]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 8], X[8]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 9], X[9]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 10], X[10]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 11], X[11]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 12], X[12]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 13], X[13]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 14], X[14]);
sha256_round(&a, &b, &c, &d, &e, &f, &g, &h, K256[i + 15], X[15]);
}
ctx->h[0] += a;
@ -391,9 +421,160 @@ static void sha256_block_data_order(SHA256_CTX *ctx, const void *in,
ctx->h[5] += f;
ctx->h[6] += g;
ctx->h[7] += h;
}
}
# endif
# endif /* SHA256_ASM */
int
SHA256_Init(SHA256_CTX *c)
{
memset(c, 0, sizeof(*c));
c->h[0] = 0x6a09e667UL;
c->h[1] = 0xbb67ae85UL;
c->h[2] = 0x3c6ef372UL;
c->h[3] = 0xa54ff53aUL;
c->h[4] = 0x510e527fUL;
c->h[5] = 0x9b05688cUL;
c->h[6] = 0x1f83d9abUL;
c->h[7] = 0x5be0cd19UL;
c->md_len = SHA256_DIGEST_LENGTH;
return 1;
}
LCRYPTO_ALIAS(SHA256_Init);
int
SHA256_Update(SHA256_CTX *c, const void *data_, size_t len)
{
const unsigned char *data = data_;
unsigned char *p;
SHA_LONG l;
size_t n;
if (len == 0)
return 1;
l = (c->Nl + (((SHA_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 += (SHA_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 >= SHA_CBLOCK || len + n >= SHA_CBLOCK) {
memcpy(p + n, data, SHA_CBLOCK - n);
sha256_block_data_order(c, p, 1);
n = SHA_CBLOCK - n;
data += n;
len -= n;
c->num = 0;
memset(p, 0, SHA_CBLOCK); /* keep it zeroed */
} else {
memcpy(p + n, data, len);
c->num += (unsigned int)len;
return 1;
}
}
n = len/SHA_CBLOCK;
if (n > 0) {
sha256_block_data_order(c, data, n);
n *= SHA_CBLOCK;
data += n;
len -= n;
}
if (len != 0) {
p = (unsigned char *)c->data;
c->num = (unsigned int)len;
memcpy(p, data, len);
}
return 1;
}
LCRYPTO_ALIAS(SHA256_Update);
void
SHA256_Transform(SHA256_CTX *c, const unsigned char *data)
{
sha256_block_data_order(c, data, 1);
}
LCRYPTO_ALIAS(SHA256_Transform);
int
SHA256_Final(unsigned char *md, SHA256_CTX *c)
{
unsigned char *p = (unsigned char *)c->data;
size_t n = c->num;
unsigned int nn;
p[n] = 0x80; /* there is always room for one */
n++;
if (n > (SHA_CBLOCK - 8)) {
memset(p + n, 0, SHA_CBLOCK - n);
n = 0;
sha256_block_data_order(c, p, 1);
}
memset(p + n, 0, SHA_CBLOCK - 8 - n);
c->data[SHA_LBLOCK - 2] = htobe32(c->Nh);
c->data[SHA_LBLOCK - 1] = htobe32(c->Nl);
sha256_block_data_order(c, p, 1);
c->num = 0;
memset(p, 0, SHA_CBLOCK);
/*
* Note that FIPS180-2 discusses "Truncation of the Hash Function Output."
* default: case below covers for it. It's not clear however if it's
* permitted to truncate to amount of bytes not divisible by 4. I bet not,
* but if it is, then default: case shall be extended. For reference.
* Idea behind separate cases for pre-defined lengths is to let the
* compiler decide if it's appropriate to unroll small loops.
*/
switch (c->md_len) {
case SHA256_DIGEST_LENGTH:
for (nn = 0; nn < SHA256_DIGEST_LENGTH / 4; nn++) {
crypto_store_htobe32(md, c->h[nn]);
md += 4;
}
break;
default:
if (c->md_len > SHA256_DIGEST_LENGTH)
return 0;
for (nn = 0; nn < c->md_len / 4; nn++) {
crypto_store_htobe32(md, c->h[nn]);
md += 4;
}
break;
}
return 1;
}
LCRYPTO_ALIAS(SHA256_Final);
unsigned char *
SHA256(const unsigned char *d, size_t n, unsigned char *md)
{
SHA256_CTX c;
static unsigned char m[SHA256_DIGEST_LENGTH];
if (md == NULL)
md = m;
SHA256_Init(&c);
SHA256_Update(&c, d, n);
SHA256_Final(md, &c);
memset(&c, 0, sizeof(c));
return (md);
}
LCRYPTO_ALIAS(SHA256);

85
src/util/sha2.h → src/util/sha256.h
View File

@ -1,4 +1,4 @@
/* crypto/sha/sha.h */
/* libcrypto/sha/sha.h */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
@ -50,105 +50,54 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The license and distribution terms for any publicly available version or
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution license
* [including the GNU Public License.]
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#pragma once
#include <stddef.h>
#ifndef HEADER_SHA_H
#define HEADER_SHA_H
#ifdef __cplusplus
extern "C" {
#endif
#if defined(OPENSSL_NO_SHA) || (defined(OPENSSL_NO_SHA0) && defined(OPENSSL_NO_SHA1))
#error SHA is disabled.
#endif
#if defined(OPENSSL_FIPS)
#define FIPS_SHA_SIZE_T size_t
#endif
/*
Compat stuff from OpenSSL land
*/
/* crypto.h */
#define fips_md_init(alg) fips_md_init_ctx(alg, alg)
#define fips_md_init_ctx(alg, cx) int alg##_Init(cx##_CTX *c)
#define fips_cipher_abort(alg) while (0)
/*-
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
* ! SHA_LONG has to be at least 32 bits wide. If it's wider, then !
* ! SHA_LONG_LOG2 has to be defined along. !
* ! SHA_LONG has to be at least 32 bits wide. !
* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*/
#if defined(__LP32__)
#define SHA_LONG unsigned long
#elif defined(__ILP64__)
#define SHA_LONG unsigned long
#define SHA_LONG_LOG2 3
#else
#define SHA_LONG unsigned int
#endif
#define SHA_LBLOCK 16
#define SHA_CBLOCK \
(SHA_LBLOCK * 4) /* SHA treats input data as a \
* contiguous array of 32 bit wide \
* big-endian values. */
#define SHA_LAST_BLOCK (SHA_CBLOCK - 8)
#define SHA_DIGEST_LENGTH 20
#define SHA_CBLOCK (SHA_LBLOCK*4) /* SHA treats input data as a
* contiguous array of 32 bit
* wide big-endian values. */
typedef struct SHAstate_st
{
SHA_LONG h0, h1, h2, h3, h4;
SHA_LONG Nl, Nh;
SHA_LONG data[SHA_LBLOCK];
unsigned int num;
} SHA_CTX;
#define SHA256_CBLOCK \
(SHA_LBLOCK * 4) /* SHA-256 treats input data as a \
* contiguous array of 32 bit wide \
* big-endian values. */
#define SHA224_DIGEST_LENGTH 28
#define SHA256_CBLOCK (SHA_LBLOCK*4) /* SHA-256 treats input data as a
* contiguous array of 32 bit
* wide big-endian values. */
#define SHA256_DIGEST_LENGTH 32
typedef struct SHA256state_st
{
typedef struct SHA256state_st {
SHA_LONG h[8];
SHA_LONG Nl, Nh;
SHA_LONG data[SHA_LBLOCK];
unsigned int num, md_len;
} SHA256_CTX;
#ifndef OPENSSL_NO_SHA256
#ifdef OPENSSL_FIPS
int private_SHA224_Init(SHA256_CTX *c);
int private_SHA256_Init(SHA256_CTX *c);
#endif
int SHA224_Init(SHA256_CTX *c);
int SHA224_Update(SHA256_CTX *c, const void *data, size_t len);
int SHA224_Final(unsigned char *md, SHA256_CTX *c);
unsigned char *SHA224(const unsigned char *d, size_t n, unsigned char *md);
int SHA256_Init(SHA256_CTX *c);
int SHA256_Update(SHA256_CTX *c, const void *data, size_t len);
int SHA256_Final(unsigned char *md, SHA256_CTX *c);
unsigned char *SHA256(const unsigned char *d, size_t n, unsigned char *md);
void SHA256_Transform(SHA256_CTX *c, const unsigned char *data);
#endif
#define SHA384_DIGEST_LENGTH 48
#define SHA512_DIGEST_LENGTH 64
#ifdef __cplusplus
}
#endif
#endif

2
src/util/srp.cpp
View File

@ -50,7 +50,7 @@
#include <mini-gmp.h>
#endif
#include <util/sha2.h>
#include "util/sha256.h"
#include "srp.h"
//#define CSRP_USE_SHA1