[thirdparty/openssl.git] / crypto / include / internal / md32_common.h

/*
 * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

/*-
 * 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 least 32 bit wide.
 * 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 converting context variables to an ASCII hash string.
 *
 * MD5 example:
 *
 *      #define DATA_ORDER_IS_LITTLE_ENDIAN
 *
 *      #define HASH_LONG               MD5_LONG
 *      #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
 */

#include <openssl/crypto.h>

#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(__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...
   */
#  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;
    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;
            /*
             * We use memset rather than OPENSSL_cleanse() here deliberately.
             * Using OPENSSL_cleanse() here could be a performance issue. It
             * will get properly cleansed on finalisation so this isn't a
             * security problem.
             */
            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;
    OPENSSL_cleanse(p, 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 originally 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.
 */
# 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.
 */
#  define MD32_REG_T int
# endif
#endif
Commit	Line	Data
aa6bb135 RS	1	/*
aa6bb135 RS	2	* Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
bd3576d2	3	*
aa6bb135 RS	4	* Licensed under the OpenSSL license (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
bd3576d2 UM	8	*/
bd3576d2 UM	9
1d97c843	10	/*-
bd3576d2 UM	11	* This is a generic 32 bit "collector" for message digest algorithms.
	12	* Whenever needed it collects input character stream into chunks of
	13	* 32 bit values and invokes a block function that performs actual hash
	14	* calculations.
	15	*
	16	* Porting guide.
	17	*
	18	* Obligatory macros:
	19	*
	20	* DATA_ORDER_IS_BIG_ENDIAN or DATA_ORDER_IS_LITTLE_ENDIAN
0f113f3e	21	* this macro defines byte order of input stream.
bd3576d2	22	* HASH_CBLOCK
0f113f3e	23	* size of a unit chunk HASH_BLOCK operates on.
bd3576d2	24	* HASH_LONG
19f05ebc	25	* has to be at least 32 bit wide.
bd3576d2	26	* HASH_CTX
0f113f3e MC	27	* context structure that at least contains following
	28	* members:
	29	* typedef struct {
	30	* ...
	31	* HASH_LONG Nl,Nh;
	32	* either {
	33	* HASH_LONG data[HASH_LBLOCK];
	34	* unsigned char data[HASH_CBLOCK];
	35	* };
	36	* unsigned int num;
	37	* ...
	38	* } HASH_CTX;
	39	* data[] vector is expected to be zeroed upon first call to
	40	* HASH_UPDATE.
bd3576d2	41	* HASH_UPDATE
0f113f3e	42	* name of "Update" function, implemented here.
bd3576d2	43	* HASH_TRANSFORM
0f113f3e	44	* name of "Transform" function, implemented here.
bd3576d2	45	* HASH_FINAL
0f113f3e	46	* name of "Final" function, implemented here.
bd3576d2	47	* HASH_BLOCK_DATA_ORDER
0f113f3e MC	48	* name of "block" function capable of treating unaligned input
0f113f3e MC	49	* message in original (data) byte order, implemented externally.
1cbde6e4	50	* HASH_MAKE_STRING
19f05ebc	51	* macro converting context variables to an ASCII hash string.
bd3576d2	52	*
bd3576d2 UM	53	* MD5 example:
bd3576d2 UM	54	*
0f113f3e	55	* #define DATA_ORDER_IS_LITTLE_ENDIAN
bd3576d2	56	*
0f113f3e	57	* #define HASH_LONG MD5_LONG
0f113f3e MC	58	* #define HASH_CTX MD5_CTX
	59	* #define HASH_CBLOCK MD5_CBLOCK
	60	* #define HASH_UPDATE MD5_Update
	61	* #define HASH_TRANSFORM MD5_Transform
	62	* #define HASH_FINAL MD5_Final
	63	* #define HASH_BLOCK_DATA_ORDER md5_block_data_order
bd3576d2 UM	64	*/
bd3576d2 UM	65
3ce2fdab MC	66	#include <openssl/crypto.h>
3ce2fdab MC	67
bd3576d2	68	#if !defined(DATA_ORDER_IS_BIG_ENDIAN) && !defined(DATA_ORDER_IS_LITTLE_ENDIAN)
0f113f3e	69	# error "DATA_ORDER must be defined!"
bd3576d2 UM	70	#endif
	71
	72	#ifndef HASH_CBLOCK
0f113f3e	73	# error "HASH_CBLOCK must be defined!"
bd3576d2 UM	74	#endif
bd3576d2 UM	75	#ifndef HASH_LONG
0f113f3e	76	# error "HASH_LONG must be defined!"
bd3576d2 UM	77	#endif
bd3576d2 UM	78	#ifndef HASH_CTX
0f113f3e	79	# error "HASH_CTX must be defined!"
bd3576d2 UM	80	#endif
	81
	82	#ifndef HASH_UPDATE
0f113f3e	83	# error "HASH_UPDATE must be defined!"
bd3576d2 UM	84	#endif
bd3576d2 UM	85	#ifndef HASH_TRANSFORM
0f113f3e	86	# error "HASH_TRANSFORM must be defined!"
bd3576d2 UM	87	#endif
bd3576d2 UM	88	#ifndef HASH_FINAL
0f113f3e	89	# error "HASH_FINAL must be defined!"
bd3576d2 UM	90	#endif
bd3576d2 UM	91
bd3576d2	92	#ifndef HASH_BLOCK_DATA_ORDER
0f113f3e	93	# error "HASH_BLOCK_DATA_ORDER must be defined!"
bd3576d2	94	#endif
bd3576d2 UM	95
	96	/*
	97	* Engage compiler specific rotate intrinsic function if available.
	98	*/
	99	#undef ROTATE
	100	#ifndef PEDANTIC
cf5ecc3e	101	# if defined(_MSC_VER)
0f113f3e	102	# define ROTATE(a,n) _lrotl(a,n)
cf5ecc3e	103	# elif defined(__ICC)
0f113f3e	104	# define ROTATE(a,n) _rotl(a,n)
cf1b7d96	105	# elif defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
bd3576d2 UM	106	/*
	107	* Some GNU C inline assembler templates. Note that these are
	108	* rotates by constant number of bits! But that's exactly
	109	* what we need here...
bd3576d2	110	*/
2f98abbc	111	# if defined(__i386) \|\| defined(__i386__) \|\| defined(__x86_64) \|\| defined(__x86_64__)
0f113f3e MC	112	# define ROTATE(a,n) ({ register unsigned int ret; \
	113	asm ( \
	114	"roll %1,%0" \
	115	: "=r"(ret) \
	116	: "I"(n), "0"((unsigned int)(a)) \
	117	: "cc"); \
	118	ret; \
	119	})
a9c32ace	120	# elif defined(_ARCH_PPC) \|\| defined(_ARCH_PPC64) \|\| \
0f113f3e MC	121	defined(__powerpc) \|\| defined(__ppc__) \|\| defined(__powerpc64__)
	122	# define ROTATE(a,n) ({ register unsigned int ret; \
	123	asm ( \
	124	"rlwinm %0,%1,%2,0,31" \
	125	: "=r"(ret) \
	126	: "r"(a), "I"(n)); \
	127	ret; \
	128	})
70831126	129	# elif defined(__s390x__)
0f113f3e MC	130	# define ROTATE(a,n) ({ register unsigned int ret; \
	131	asm ("rll %0,%1,%2" \
	132	: "=r"(ret) \
	133	: "r"(a), "I"(n)); \
	134	ret; \
	135	})
bd3576d2 UM	136	# endif
bd3576d2 UM	137	# endif
0f113f3e	138	#endif /* PEDANTIC */
bd3576d2	139
bd3576d2	140	#ifndef ROTATE
0f113f3e	141	# define ROTATE(a,n) (((a)<<(n))\|(((a)&0xffffffff)>>(32-(n))))
bd3576d2 UM	142	#endif
bd3576d2 UM	143
bd3576d2 UM	144	#if defined(DATA_ORDER_IS_BIG_ENDIAN)
bd3576d2 UM	145
0f113f3e MC	146	# ifndef PEDANTIC
	147	# if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
	148	# if ((defined(__i386) \|\| defined(__i386__)) && !defined(I386_ONLY)) \|\| \
af2c2823	149	(defined(__x86_64) \|\| defined(__x86_64__))
0f113f3e	150	# if !defined(B_ENDIAN)
a2eb9688 AP	151	/*
	152	* This gives ~30-40% performance improvement in SHA-256 compiled
	153	* with gcc [on P4]. Well, first macro to be frank. We can pull
	154	* this trick on x86* platforms only, because these CPUs can fetch
	155	* unaligned data without raising an exception.
	156	*/
0f113f3e MC	157	# define HOST_c2l(c,l) ({ unsigned int r=((const unsigned int )(c)); \
	158	asm ("bswapl %0":"=r"(r):"0"(r)); \
	159	(c)+=4; (l)=r; })
	160	# define HOST_l2c(l,c) ({ unsigned int r=(l); \
	161	asm ("bswapl %0":"=r"(r):"0"(r)); \
	162	((unsigned int )(c))=r; (c)+=4; r; })
	163	# endif
	164	# elif defined(__aarch64__)
	165	# if defined(__BYTE_ORDER__)
	166	# if defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__
	167	# define HOST_c2l(c,l) ({ unsigned int r; \
	168	asm ("rev %w0,%w1" \
	169	:"=r"(r) \
	170	:"r"(((const unsigned int )(c))));\
	171	(c)+=4; (l)=r; })
	172	# define HOST_l2c(l,c) ({ unsigned int r; \
	173	asm ("rev %w0,%w1" \
	174	:"=r"(r) \
	175	:"r"((unsigned int)(l)));\
	176	((unsigned int )(c))=r; (c)+=4; r; })
	177	# elif defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__==__ORDER_BIG_ENDIAN__
	178	# define HOST_c2l(c,l) ((l)=((const unsigned int )(c)), (c)+=4, (l))
	179	# define HOST_l2c(l,c) (((unsigned int )(c))=(l), (c)+=4, (l))
	180	# endif
039081b8 AP	181	# endif
039081b8 AP	182	# endif
a2eb9688	183	# endif
0f113f3e MC	184	# if defined(__s390__) \|\| defined(__s390x__)
	185	# define HOST_c2l(c,l) ((l)=((const unsigned int )(c)), (c)+=4, (l))
	186	# define HOST_l2c(l,c) (((unsigned int )(c))=(l), (c)+=4, (l))
	187	# endif
a2eb9688	188	# endif
a2eb9688	189
0f113f3e MC	190	# ifndef HOST_c2l
	191	# define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++)))<<24), \
	192	l\|=(((unsigned long)(*((c)++)))<<16), \
	193	l\|=(((unsigned long)(*((c)++)))<< 8), \
	194	l\|=(((unsigned long)(*((c)++))) ) )
	195	# endif
	196	# ifndef HOST_l2c
	197	# define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
	198	*((c)++)=(unsigned char)(((l)>>16)&0xff), \
	199	*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
	200	*((c)++)=(unsigned char)(((l) )&0xff), \
	201	l)
	202	# endif
bd3576d2 UM	203
	204	#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
	205
0f113f3e MC	206	# ifndef PEDANTIC
	207	# if defined(__GNUC__) && __GNUC__>=2 && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM)
	208	# if defined(__s390x__)
	209	# define HOST_c2l(c,l) ({ asm ("lrv %0,%1" \
	210	:"=d"(l) :"m"((const unsigned int )(c)));\
	211	(c)+=4; (l); })
	212	# define HOST_l2c(l,c) ({ asm ("strv %1,%0" \
	213	:"=m"((unsigned int )(c)) :"d"(l));\
	214	(c)+=4; (l); })
	215	# endif
b38c0add	216	# endif
0f113f3e MC	217	# if defined(__i386) \|\| defined(__i386__) \|\| defined(__x86_64) \|\| defined(__x86_64__)
0f113f3e MC	218	# ifndef B_ENDIAN
021e5043	219	/* See comment in DATA_ORDER_IS_BIG_ENDIAN section. */
0f113f3e MC	220	# define HOST_c2l(c,l) ((l)=((const unsigned int )(c)), (c)+=4, l)
	221	# define HOST_l2c(l,c) (((unsigned int )(c))=(l), (c)+=4, l)
	222	# endif
021e5043	223	# endif
1110cea0	224	# endif
a2eb9688	225
0f113f3e MC	226	# ifndef HOST_c2l
	227	# define HOST_c2l(c,l) (l =(((unsigned long)(*((c)++))) ), \
	228	l\|=(((unsigned long)(*((c)++)))<< 8), \
	229	l\|=(((unsigned long)(*((c)++)))<<16), \
	230	l\|=(((unsigned long)(*((c)++)))<<24) )
	231	# endif
	232	# ifndef HOST_l2c
	233	# define HOST_l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \
	234	*((c)++)=(unsigned char)(((l)>> 8)&0xff), \
	235	*((c)++)=(unsigned char)(((l)>>16)&0xff), \
	236	*((c)++)=(unsigned char)(((l)>>24)&0xff), \
	237	l)
	238	# endif
bd3576d2 UM	239
	240	#endif
	241
	242	/*
19f05ebc	243	* Time for some action :-)
bd3576d2 UM	244	*/
bd3576d2 UM	245
0f113f3e MC	246	int HASH_UPDATE(HASH_CTX c, const void data_, size_t len)
	247	{
	248	const unsigned char *data = data_;
	249	unsigned char *p;
	250	HASH_LONG l;
	251	size_t n;
bd3576d2	252
0f113f3e MC	253	if (len == 0)
0f113f3e MC	254	return 1;
bd3576d2	255
0f113f3e	256	l = (c->Nl + (((HASH_LONG) len) << 3)) & 0xffffffffUL;
0f113f3e MC	257	if (l < c->Nl) /* overflow */
	258	c->Nh++;
	259	c->Nh += (HASH_LONG) (len >> 29); /* might cause compiler warning on
	260	* 16-bit */
	261	c->Nl = l;
	262
	263	n = c->num;
	264	if (n != 0) {
	265	p = (unsigned char *)c->data;
	266
	267	if (len >= HASH_CBLOCK \|\| len + n >= HASH_CBLOCK) {
	268	memcpy(p + n, data, HASH_CBLOCK - n);
	269	HASH_BLOCK_DATA_ORDER(c, p, 1);
	270	n = HASH_CBLOCK - n;
	271	data += n;
	272	len -= n;
	273	c->num = 0;
3ce2fdab MC	274	/*
	275	* We use memset rather than OPENSSL_cleanse() here deliberately.
	276	* Using OPENSSL_cleanse() here could be a performance issue. It
	277	* will get properly cleansed on finalisation so this isn't a
	278	* security problem.
	279	*/
0f113f3e MC	280	memset(p, 0, HASH_CBLOCK); /* keep it zeroed */
	281	} else {
	282	memcpy(p + n, data, len);
	283	c->num += (unsigned int)len;
	284	return 1;
	285	}
	286	}
	287
	288	n = len / HASH_CBLOCK;
	289	if (n > 0) {
	290	HASH_BLOCK_DATA_ORDER(c, data, n);
	291	n *= HASH_CBLOCK;
	292	data += n;
	293	len -= n;
	294	}
	295
	296	if (len != 0) {
	297	p = (unsigned char *)c->data;
	298	c->num = (unsigned int)len;
	299	memcpy(p, data, len);
	300	}
	301	return 1;
	302	}
	303
	304	void HASH_TRANSFORM(HASH_CTX c, const unsigned char data)
	305	{
	306	HASH_BLOCK_DATA_ORDER(c, data, 1);
	307	}
	308
	309	int HASH_FINAL(unsigned char md, HASH_CTX c)
	310	{
	311	unsigned char p = (unsigned char )c->data;
	312	size_t n = c->num;
	313
	314	p[n] = 0x80; /* there is always room for one */
	315	n++;
	316
	317	if (n > (HASH_CBLOCK - 8)) {
	318	memset(p + n, 0, HASH_CBLOCK - n);
	319	n = 0;
	320	HASH_BLOCK_DATA_ORDER(c, p, 1);
	321	}
	322	memset(p + n, 0, HASH_CBLOCK - 8 - n);
	323
	324	p += HASH_CBLOCK - 8;
bd3576d2	325	#if defined(DATA_ORDER_IS_BIG_ENDIAN)
0f113f3e MC	326	(void)HOST_l2c(c->Nh, p);
0f113f3e MC	327	(void)HOST_l2c(c->Nl, p);
bd3576d2	328	#elif defined(DATA_ORDER_IS_LITTLE_ENDIAN)
0f113f3e MC	329	(void)HOST_l2c(c->Nl, p);
0f113f3e MC	330	(void)HOST_l2c(c->Nh, p);
bd3576d2	331	#endif
0f113f3e MC	332	p -= HASH_CBLOCK;
	333	HASH_BLOCK_DATA_ORDER(c, p, 1);
	334	c->num = 0;
3ce2fdab	335	OPENSSL_cleanse(p, HASH_CBLOCK);
bd3576d2	336
1cbde6e4	337	#ifndef HASH_MAKE_STRING
0f113f3e	338	# error "HASH_MAKE_STRING must be defined!"
1cbde6e4	339	#else
0f113f3e	340	HASH_MAKE_STRING(c, md);
1cbde6e4	341	#endif
bd3576d2	342
0f113f3e MC	343	return 1;
0f113f3e MC	344	}
2f98abbc AP	345
2f98abbc AP	346	#ifndef MD32_REG_T
0f113f3e MC	347	# if defined(__alpha) \|\| defined(__sparcv9) \|\| defined(__mips)
0f113f3e MC	348	# define MD32_REG_T long
2f98abbc	349	/*
8483a003	350	* This comment was originally written for MD5, which is why it
2f98abbc AP	351	* discusses A-D. But it basically applies to all 32-bit digests,
	352	* which is why it was moved to common header file.
	353	*
	354	* In case you wonder why A-D are declared as long and not
	355	* as MD5_LONG. Doing so results in slight performance
	356	* boost on LP64 architectures. The catch is we don't
	357	* really care if 32 MSBs of a 64-bit register get polluted
	358	* with eventual overflows as we save only 32 LSBs in
	359	* either case. Now declaring 'em long excuses the compiler
	360	* from keeping 32 MSBs zeroed resulting in 13% performance
	361	* improvement under SPARC Solaris7/64 and 5% under AlphaLinux.
0f113f3e	362	* Well, to be honest it should say that this prevents
2f98abbc	363	* performance degradation.
30ab7af2	364	*/
0f113f3e	365	# else
30ab7af2 AP	366	/*
	367	* Above is not absolute and there are LP64 compilers that
	368	* generate better code if MD32_REG_T is defined int. The above
	369	* pre-processor condition reflects the circumstances under which
	370	* the conclusion was made and is subject to further extension.
2f98abbc	371	*/
0f113f3e MC	372	# define MD32_REG_T int
0f113f3e MC	373	# endif
2f98abbc	374	#endif