mirror of
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Merge commit 'origin/crypto-hash^'
This commit is contained in:
commit
12d752ef24
@ -1,3 +1,9 @@
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|||||||
|
sha256.c
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||||||
|
sha256.h
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|
sha512.c
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||||||
|
sha512.h
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||||||
|
sha1.c
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||||||
|
sha1.h
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||||||
birdlib.h
|
birdlib.h
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||||||
bitops.c
|
bitops.c
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||||||
bitops.h
|
bitops.h
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||||||
|
342
lib/sha1.c
Normal file
342
lib/sha1.c
Normal file
@ -0,0 +1,342 @@
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|
/*
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||||||
|
* BIRD Library -- SHA-1 Hash Function (FIPS 180-1, RFC 3174) and HMAC-SHA-1
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*
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* (c) 2015 CZ.NIC z.s.p.o.
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*
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* Based on the code from libucw-6.4
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|
* (c) 2008--2009 Martin Mares <mj@ucw.cz>
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|
*
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|
* Based on the code from libgcrypt-1.2.3, which is
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|
* (c) 1998, 2001, 2002, 2003 Free Software Foundation, Inc.
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|
*
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* Can be freely distributed and used under the terms of the GNU GPL.
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|
*/
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|
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#include "lib/sha1.h"
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#include "lib/unaligned.h"
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|
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|
void
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|
sha1_init(struct sha1_context *hd)
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|
{
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|
hd->h0 = 0x67452301;
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|
hd->h1 = 0xefcdab89;
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|
hd->h2 = 0x98badcfe;
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|
hd->h3 = 0x10325476;
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||||||
|
hd->h4 = 0xc3d2e1f0;
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|
hd->nblocks = 0;
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|
hd->count = 0;
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|
}
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|
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||||||
|
/*
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|
* Transform the message X which consists of 16 32-bit-words
|
||||||
|
*/
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|
static void
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|
sha1_transform(struct sha1_context *hd, const byte *data)
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|
{
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|
u32 a,b,c,d,e,tm;
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|
u32 x[16];
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|
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|
/* Get values from the chaining vars. */
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|
a = hd->h0;
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|
b = hd->h1;
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|
c = hd->h2;
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|
d = hd->h3;
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|
e = hd->h4;
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|
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|
#ifdef CPU_BIG_ENDIAN
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|
memcpy(x, data, 64);
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|
#else
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|
int i;
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|
for (i = 0; i < 16; i++)
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|
x[i] = get_u32(data+4*i);
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|
#endif
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|
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|
#define K1 0x5A827999L
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|
#define K2 0x6ED9EBA1L
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|
#define K3 0x8F1BBCDCL
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|
#define K4 0xCA62C1D6L
|
||||||
|
#define F1(x,y,z) ( z ^ ( x & ( y ^ z ) ) )
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|
#define F2(x,y,z) ( x ^ y ^ z )
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|
#define F3(x,y,z) ( ( x & y ) | ( z & ( x | y ) ) )
|
||||||
|
#define F4(x,y,z) ( x ^ y ^ z )
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|
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||||||
|
#define M(i) (tm = x[i&0x0f] ^ x[(i-14)&0x0f] ^ x[(i-8)&0x0f] ^ x[(i-3)&0x0f], (x[i&0x0f] = ROL(tm, 1)))
|
||||||
|
|
||||||
|
/* Bitwise rotation of an unsigned int to the left **/
|
||||||
|
#define ROL(x, bits) (((x) << (bits)) | ((uint)(x) >> (sizeof(uint)*8 - (bits))))
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|
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||||||
|
#define R(a, b, c, d, e, f, k, m) \
|
||||||
|
do \
|
||||||
|
{ \
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||||||
|
e += ROL(a, 5) + f(b, c, d) + k + m; \
|
||||||
|
b = ROL( b, 30 ); \
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||||||
|
} while(0)
|
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|
|
||||||
|
R( a, b, c, d, e, F1, K1, x[ 0] );
|
||||||
|
R( e, a, b, c, d, F1, K1, x[ 1] );
|
||||||
|
R( d, e, a, b, c, F1, K1, x[ 2] );
|
||||||
|
R( c, d, e, a, b, F1, K1, x[ 3] );
|
||||||
|
R( b, c, d, e, a, F1, K1, x[ 4] );
|
||||||
|
R( a, b, c, d, e, F1, K1, x[ 5] );
|
||||||
|
R( e, a, b, c, d, F1, K1, x[ 6] );
|
||||||
|
R( d, e, a, b, c, F1, K1, x[ 7] );
|
||||||
|
R( c, d, e, a, b, F1, K1, x[ 8] );
|
||||||
|
R( b, c, d, e, a, F1, K1, x[ 9] );
|
||||||
|
R( a, b, c, d, e, F1, K1, x[10] );
|
||||||
|
R( e, a, b, c, d, F1, K1, x[11] );
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|
R( d, e, a, b, c, F1, K1, x[12] );
|
||||||
|
R( c, d, e, a, b, F1, K1, x[13] );
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||||||
|
R( b, c, d, e, a, F1, K1, x[14] );
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||||||
|
R( a, b, c, d, e, F1, K1, x[15] );
|
||||||
|
R( e, a, b, c, d, F1, K1, M(16) );
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|
R( d, e, a, b, c, F1, K1, M(17) );
|
||||||
|
R( c, d, e, a, b, F1, K1, M(18) );
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|
R( b, c, d, e, a, F1, K1, M(19) );
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|
R( a, b, c, d, e, F2, K2, M(20) );
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|
R( e, a, b, c, d, F2, K2, M(21) );
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|
R( d, e, a, b, c, F2, K2, M(22) );
|
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|
R( c, d, e, a, b, F2, K2, M(23) );
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|
R( b, c, d, e, a, F2, K2, M(24) );
|
||||||
|
R( a, b, c, d, e, F2, K2, M(25) );
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||||||
|
R( e, a, b, c, d, F2, K2, M(26) );
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||||||
|
R( d, e, a, b, c, F2, K2, M(27) );
|
||||||
|
R( c, d, e, a, b, F2, K2, M(28) );
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||||||
|
R( b, c, d, e, a, F2, K2, M(29) );
|
||||||
|
R( a, b, c, d, e, F2, K2, M(30) );
|
||||||
|
R( e, a, b, c, d, F2, K2, M(31) );
|
||||||
|
R( d, e, a, b, c, F2, K2, M(32) );
|
||||||
|
R( c, d, e, a, b, F2, K2, M(33) );
|
||||||
|
R( b, c, d, e, a, F2, K2, M(34) );
|
||||||
|
R( a, b, c, d, e, F2, K2, M(35) );
|
||||||
|
R( e, a, b, c, d, F2, K2, M(36) );
|
||||||
|
R( d, e, a, b, c, F2, K2, M(37) );
|
||||||
|
R( c, d, e, a, b, F2, K2, M(38) );
|
||||||
|
R( b, c, d, e, a, F2, K2, M(39) );
|
||||||
|
R( a, b, c, d, e, F3, K3, M(40) );
|
||||||
|
R( e, a, b, c, d, F3, K3, M(41) );
|
||||||
|
R( d, e, a, b, c, F3, K3, M(42) );
|
||||||
|
R( c, d, e, a, b, F3, K3, M(43) );
|
||||||
|
R( b, c, d, e, a, F3, K3, M(44) );
|
||||||
|
R( a, b, c, d, e, F3, K3, M(45) );
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||||||
|
R( e, a, b, c, d, F3, K3, M(46) );
|
||||||
|
R( d, e, a, b, c, F3, K3, M(47) );
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||||||
|
R( c, d, e, a, b, F3, K3, M(48) );
|
||||||
|
R( b, c, d, e, a, F3, K3, M(49) );
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||||||
|
R( a, b, c, d, e, F3, K3, M(50) );
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||||||
|
R( e, a, b, c, d, F3, K3, M(51) );
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||||||
|
R( d, e, a, b, c, F3, K3, M(52) );
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||||||
|
R( c, d, e, a, b, F3, K3, M(53) );
|
||||||
|
R( b, c, d, e, a, F3, K3, M(54) );
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||||||
|
R( a, b, c, d, e, F3, K3, M(55) );
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|
R( e, a, b, c, d, F3, K3, M(56) );
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|
R( d, e, a, b, c, F3, K3, M(57) );
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|
R( c, d, e, a, b, F3, K3, M(58) );
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||||||
|
R( b, c, d, e, a, F3, K3, M(59) );
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|
R( a, b, c, d, e, F4, K4, M(60) );
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||||||
|
R( e, a, b, c, d, F4, K4, M(61) );
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||||||
|
R( d, e, a, b, c, F4, K4, M(62) );
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||||||
|
R( c, d, e, a, b, F4, K4, M(63) );
|
||||||
|
R( b, c, d, e, a, F4, K4, M(64) );
|
||||||
|
R( a, b, c, d, e, F4, K4, M(65) );
|
||||||
|
R( e, a, b, c, d, F4, K4, M(66) );
|
||||||
|
R( d, e, a, b, c, F4, K4, M(67) );
|
||||||
|
R( c, d, e, a, b, F4, K4, M(68) );
|
||||||
|
R( b, c, d, e, a, F4, K4, M(69) );
|
||||||
|
R( a, b, c, d, e, F4, K4, M(70) );
|
||||||
|
R( e, a, b, c, d, F4, K4, M(71) );
|
||||||
|
R( d, e, a, b, c, F4, K4, M(72) );
|
||||||
|
R( c, d, e, a, b, F4, K4, M(73) );
|
||||||
|
R( b, c, d, e, a, F4, K4, M(74) );
|
||||||
|
R( a, b, c, d, e, F4, K4, M(75) );
|
||||||
|
R( e, a, b, c, d, F4, K4, M(76) );
|
||||||
|
R( d, e, a, b, c, F4, K4, M(77) );
|
||||||
|
R( c, d, e, a, b, F4, K4, M(78) );
|
||||||
|
R( b, c, d, e, a, F4, K4, M(79) );
|
||||||
|
|
||||||
|
/* Update chaining vars. */
|
||||||
|
hd->h0 += a;
|
||||||
|
hd->h1 += b;
|
||||||
|
hd->h2 += c;
|
||||||
|
hd->h3 += d;
|
||||||
|
hd->h4 += e;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Update the message digest with the contents
|
||||||
|
* of INBUF with length INLEN.
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
sha1_update(struct sha1_context *hd, const byte *inbuf, uint inlen)
|
||||||
|
{
|
||||||
|
if (hd->count == 64) /* flush the buffer */
|
||||||
|
{
|
||||||
|
sha1_transform(hd, hd->buf);
|
||||||
|
hd->count = 0;
|
||||||
|
hd->nblocks++;
|
||||||
|
}
|
||||||
|
if (!inbuf)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (hd->count)
|
||||||
|
{
|
||||||
|
for (; inlen && hd->count < 64; inlen--)
|
||||||
|
hd->buf[hd->count++] = *inbuf++;
|
||||||
|
sha1_update( hd, NULL, 0 );
|
||||||
|
if(!inlen)
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
while (inlen >= 64)
|
||||||
|
{
|
||||||
|
sha1_transform(hd, inbuf);
|
||||||
|
hd->count = 0;
|
||||||
|
hd->nblocks++;
|
||||||
|
inlen -= 64;
|
||||||
|
inbuf += 64;
|
||||||
|
}
|
||||||
|
for (; inlen && hd->count < 64; inlen--)
|
||||||
|
hd->buf[hd->count++] = *inbuf++;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The routine final terminates the computation and
|
||||||
|
* returns the digest.
|
||||||
|
* The handle is prepared for a new cycle, but adding bytes to the
|
||||||
|
* handle will the destroy the returned buffer.
|
||||||
|
* Returns: 20 bytes representing the digest.
|
||||||
|
*/
|
||||||
|
byte *
|
||||||
|
sha1_final(struct sha1_context *hd)
|
||||||
|
{
|
||||||
|
u32 t, msb, lsb;
|
||||||
|
u32 *p;
|
||||||
|
|
||||||
|
sha1_update(hd, NULL, 0); /* flush */;
|
||||||
|
|
||||||
|
t = hd->nblocks;
|
||||||
|
/* multiply by 64 to make a byte count */
|
||||||
|
lsb = t << 6;
|
||||||
|
msb = t >> 26;
|
||||||
|
/* add the count */
|
||||||
|
t = lsb;
|
||||||
|
if ((lsb += hd->count) < t)
|
||||||
|
msb++;
|
||||||
|
/* multiply by 8 to make a bit count */
|
||||||
|
t = lsb;
|
||||||
|
lsb <<= 3;
|
||||||
|
msb <<= 3;
|
||||||
|
msb |= t >> 29;
|
||||||
|
|
||||||
|
if (hd->count < 56) /* enough room */
|
||||||
|
{
|
||||||
|
hd->buf[hd->count++] = 0x80; /* pad */
|
||||||
|
while (hd->count < 56)
|
||||||
|
hd->buf[hd->count++] = 0; /* pad */
|
||||||
|
}
|
||||||
|
else /* need one extra block */
|
||||||
|
{
|
||||||
|
hd->buf[hd->count++] = 0x80; /* pad character */
|
||||||
|
while (hd->count < 64)
|
||||||
|
hd->buf[hd->count++] = 0;
|
||||||
|
sha1_update(hd, NULL, 0); /* flush */;
|
||||||
|
memset(hd->buf, 0, 56 ); /* fill next block with zeroes */
|
||||||
|
}
|
||||||
|
/* append the 64 bit count */
|
||||||
|
hd->buf[56] = msb >> 24;
|
||||||
|
hd->buf[57] = msb >> 16;
|
||||||
|
hd->buf[58] = msb >> 8;
|
||||||
|
hd->buf[59] = msb ;
|
||||||
|
hd->buf[60] = lsb >> 24;
|
||||||
|
hd->buf[61] = lsb >> 16;
|
||||||
|
hd->buf[62] = lsb >> 8;
|
||||||
|
hd->buf[63] = lsb ;
|
||||||
|
sha1_transform(hd, hd->buf);
|
||||||
|
|
||||||
|
p = (u32*) hd->buf;
|
||||||
|
#define X(a) do { put_u32(p, hd->h##a); p++; } while(0)
|
||||||
|
X(0);
|
||||||
|
X(1);
|
||||||
|
X(2);
|
||||||
|
X(3);
|
||||||
|
X(4);
|
||||||
|
#undef X
|
||||||
|
|
||||||
|
return hd->buf;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* SHA1-HMAC
|
||||||
|
*/
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Shortcut function which puts the hash value of the supplied buffer
|
||||||
|
* into outbuf which must have a size of 20 bytes.
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
sha1_hash_buffer(byte *outbuf, const byte *buffer, uint length)
|
||||||
|
{
|
||||||
|
struct sha1_context ctx;
|
||||||
|
|
||||||
|
sha1_init(&ctx);
|
||||||
|
sha1_update(&ctx, buffer, length);
|
||||||
|
memcpy(outbuf, sha1_final(&ctx), SHA1_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
sha1_hmac_init(struct sha1_hmac_context *ctx, const byte *key, uint keylen)
|
||||||
|
{
|
||||||
|
byte keybuf[SHA1_BLOCK_SIZE], buf[SHA1_BLOCK_SIZE];
|
||||||
|
|
||||||
|
/* Hash the key if necessary */
|
||||||
|
if (keylen <= SHA1_BLOCK_SIZE)
|
||||||
|
{
|
||||||
|
memcpy(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + keylen, SHA1_BLOCK_SIZE - keylen);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
sha1_hash_buffer(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + SHA1_SIZE, SHA1_BLOCK_SIZE - SHA1_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Initialize the inner digest */
|
||||||
|
sha1_init(&ctx->ictx);
|
||||||
|
int i;
|
||||||
|
for (i = 0; i < SHA1_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x36;
|
||||||
|
sha1_update(&ctx->ictx, buf, SHA1_BLOCK_SIZE);
|
||||||
|
|
||||||
|
/* Initialize the outer digest */
|
||||||
|
sha1_init(&ctx->octx);
|
||||||
|
for (i = 0; i < SHA1_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x5c;
|
||||||
|
sha1_update(&ctx->octx, buf, SHA1_BLOCK_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
sha1_hmac_update(struct sha1_hmac_context *ctx, const byte *data, uint datalen)
|
||||||
|
{
|
||||||
|
/* Just update the inner digest */
|
||||||
|
sha1_update(&ctx->ictx, data, datalen);
|
||||||
|
}
|
||||||
|
|
||||||
|
byte *sha1_hmac_final(struct sha1_hmac_context *ctx)
|
||||||
|
{
|
||||||
|
/* Finish the inner digest */
|
||||||
|
byte *isha = sha1_final(&ctx->ictx);
|
||||||
|
|
||||||
|
/* Finish the outer digest */
|
||||||
|
sha1_update(&ctx->octx, isha, SHA1_SIZE);
|
||||||
|
return sha1_final(&ctx->octx);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
sha1_hmac(byte *outbuf, const byte *key, uint keylen, const byte *data, uint datalen)
|
||||||
|
{
|
||||||
|
struct sha1_hmac_context hd;
|
||||||
|
sha1_hmac_init(&hd, key, keylen);
|
||||||
|
sha1_hmac_update(&hd, data, datalen);
|
||||||
|
byte *osha = sha1_hmac_final(&hd);
|
||||||
|
memcpy(outbuf, osha, SHA1_SIZE);
|
||||||
|
}
|
86
lib/sha1.h
Normal file
86
lib/sha1.h
Normal file
@ -0,0 +1,86 @@
|
|||||||
|
/*
|
||||||
|
* BIRD Library -- SHA-1 Hash Function (FIPS 180-1, RFC 3174) and HMAC-SHA-1
|
||||||
|
*
|
||||||
|
* (c) 2015 CZ.NIC z.s.p.o.
|
||||||
|
*
|
||||||
|
* Based on the code from libucw-6.4
|
||||||
|
* (c) 2008--2009 Martin Mares <mj@ucw.cz>
|
||||||
|
*
|
||||||
|
* Based on the code from libgcrypt-1.2.3, which is
|
||||||
|
* (c) 1998, 2001, 2002, 2003 Free Software Foundation, Inc.
|
||||||
|
*
|
||||||
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _BIRD_SHA1_H_
|
||||||
|
#define _BIRD_SHA1_H_
|
||||||
|
|
||||||
|
#include "nest/bird.h"
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Internal SHA1 state.
|
||||||
|
* You should use it just as an opaque handle only.
|
||||||
|
*/
|
||||||
|
struct sha1_context {
|
||||||
|
u32 h0,h1,h2,h3,h4;
|
||||||
|
u32 nblocks;
|
||||||
|
byte buf[64];
|
||||||
|
int count;
|
||||||
|
} ;
|
||||||
|
|
||||||
|
void sha1_init(struct sha1_context *hd); /* Initialize new algorithm run in the @hd context. **/
|
||||||
|
/*
|
||||||
|
* Push another @inlen bytes of data pointed to by @inbuf onto the
|
||||||
|
* SHA1 hash currently in @hd. You can call this any times you want on
|
||||||
|
* the same hash (and you do not need to reinitialize it by
|
||||||
|
* @sha1_init()). It has the same effect as concatenating all the data
|
||||||
|
* together and passing them at once.
|
||||||
|
*/
|
||||||
|
void sha1_update(struct sha1_context *hd, const byte *inbuf, uint inlen);
|
||||||
|
/*
|
||||||
|
* No more @sha1_update() calls will be done. This terminates the hash
|
||||||
|
* and returns a pointer to it.
|
||||||
|
*
|
||||||
|
* Note that the pointer points into data in the @hd context. If it ceases
|
||||||
|
* to exist, the pointer becomes invalid.
|
||||||
|
*
|
||||||
|
* To convert the hash to its usual hexadecimal representation, see
|
||||||
|
* <<string:mem_to_hex()>>.
|
||||||
|
*/
|
||||||
|
byte *sha1_final(struct sha1_context *hd);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* A convenience one-shot function for SHA1 hash.
|
||||||
|
* It is equivalent to this snippet of code:
|
||||||
|
*
|
||||||
|
* sha1_context hd;
|
||||||
|
* sha1_init(&hd);
|
||||||
|
* sha1_update(&hd, buffer, length);
|
||||||
|
* memcpy(outbuf, sha1_final(&hd), SHA1_SIZE);
|
||||||
|
*/
|
||||||
|
void sha1_hash_buffer(byte *outbuf, const byte *buffer, uint length);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* SHA1 HMAC message authentication. If you provide @key and @data,
|
||||||
|
* the result will be stored in @outbuf.
|
||||||
|
*/
|
||||||
|
void sha1_hmac(byte *outbuf, const byte *key, uint keylen, const byte *data, uint datalen);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The HMAC also exists in a stream version in a way analogous to the
|
||||||
|
* plain SHA1. Pass this as a context.
|
||||||
|
*/
|
||||||
|
struct sha1_hmac_context {
|
||||||
|
struct sha1_context ictx;
|
||||||
|
struct sha1_context octx;
|
||||||
|
};
|
||||||
|
|
||||||
|
void sha1_hmac_init(struct sha1_hmac_context *hd, const byte *key, uint keylen); /* Initialize HMAC with context @hd and the given key. See sha1_init(). */
|
||||||
|
void sha1_hmac_update(struct sha1_hmac_context *hd, const byte *data, uint datalen); /* Hash another @datalen bytes of data. See sha1_update(). */
|
||||||
|
byte *sha1_hmac_final(struct sha1_hmac_context *hd); /* Terminate the HMAC and return a pointer to the allocated hash. See sha1_final(). */
|
||||||
|
|
||||||
|
#define SHA1_SIZE 20 /* Size of the SHA1 hash in its binary representation **/
|
||||||
|
#define SHA1_HEX_SIZE 41 /* Buffer length for a string containing SHA1 in hexadecimal format. **/
|
||||||
|
#define SHA1_BLOCK_SIZE 64 /* SHA1 splits input to blocks of this size. **/
|
||||||
|
|
||||||
|
#endif /* _BIRD_SHA1_H_ */
|
467
lib/sha256.c
Normal file
467
lib/sha256.c
Normal file
@ -0,0 +1,467 @@
|
|||||||
|
/*
|
||||||
|
* BIRD Library -- SHA-256 and SHA-224 Hash Functions,
|
||||||
|
* HMAC-SHA-256 and HMAC-SHA-224 Functions
|
||||||
|
*
|
||||||
|
* (c) 2015 CZ.NIC z.s.p.o.
|
||||||
|
*
|
||||||
|
* Based on the code from libgcrypt-1.6.0, which is
|
||||||
|
* (c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc.
|
||||||
|
*
|
||||||
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "lib/sha256.h"
|
||||||
|
#include "lib/unaligned.h"
|
||||||
|
|
||||||
|
static uint sha256_transform(void *ctx, const byte *data, size_t nblks);
|
||||||
|
|
||||||
|
void
|
||||||
|
sha256_init(struct sha256_context *ctx)
|
||||||
|
{
|
||||||
|
ctx->h0 = 0x6a09e667;
|
||||||
|
ctx->h1 = 0xbb67ae85;
|
||||||
|
ctx->h2 = 0x3c6ef372;
|
||||||
|
ctx->h3 = 0xa54ff53a;
|
||||||
|
ctx->h4 = 0x510e527f;
|
||||||
|
ctx->h5 = 0x9b05688c;
|
||||||
|
ctx->h6 = 0x1f83d9ab;
|
||||||
|
ctx->h7 = 0x5be0cd19;
|
||||||
|
|
||||||
|
ctx->nblocks = 0;
|
||||||
|
ctx->nblocks_high = 0;
|
||||||
|
ctx->count = 0;
|
||||||
|
ctx->blocksize = 64;
|
||||||
|
ctx->transform = sha256_transform;
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
sha224_init(struct sha224_context *ctx)
|
||||||
|
{
|
||||||
|
ctx->h0 = 0xc1059ed8;
|
||||||
|
ctx->h1 = 0x367cd507;
|
||||||
|
ctx->h2 = 0x3070dd17;
|
||||||
|
ctx->h3 = 0xf70e5939;
|
||||||
|
ctx->h4 = 0xffc00b31;
|
||||||
|
ctx->h5 = 0x68581511;
|
||||||
|
ctx->h6 = 0x64f98fa7;
|
||||||
|
ctx->h7 = 0xbefa4fa4;
|
||||||
|
|
||||||
|
ctx->nblocks = 0;
|
||||||
|
ctx->nblocks_high = 0;
|
||||||
|
ctx->count = 0;
|
||||||
|
ctx->blocksize = 64;
|
||||||
|
ctx->transform = sha256_transform;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* (4.2) same as SHA-1's F1. */
|
||||||
|
static inline u32
|
||||||
|
f1(u32 x, u32 y, u32 z)
|
||||||
|
{
|
||||||
|
return (z ^ (x & (y ^ z)));
|
||||||
|
}
|
||||||
|
|
||||||
|
/* (4.3) same as SHA-1's F3 */
|
||||||
|
static inline u32
|
||||||
|
f3(u32 x, u32 y, u32 z)
|
||||||
|
{
|
||||||
|
return ((x & y) | (z & (x|y)));
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Bitwise rotation of an uint to the right */
|
||||||
|
static inline u32 ror(u32 x, int n)
|
||||||
|
{
|
||||||
|
return ( (x >> (n&(32-1))) | (x << ((32-n)&(32-1))) );
|
||||||
|
}
|
||||||
|
|
||||||
|
/* (4.4) */
|
||||||
|
static inline u32
|
||||||
|
sum0(u32 x)
|
||||||
|
{
|
||||||
|
return (ror(x, 2) ^ ror(x, 13) ^ ror(x, 22));
|
||||||
|
}
|
||||||
|
|
||||||
|
/* (4.5) */
|
||||||
|
static inline u32
|
||||||
|
sum1(u32 x)
|
||||||
|
{
|
||||||
|
return (ror(x, 6) ^ ror(x, 11) ^ ror(x, 25));
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
Transform the message X which consists of 16 32-bit-words. See FIPS
|
||||||
|
180-2 for details. */
|
||||||
|
#define S0(x) (ror((x), 7) ^ ror((x), 18) ^ ((x) >> 3)) /* (4.6) */
|
||||||
|
#define S1(x) (ror((x), 17) ^ ror((x), 19) ^ ((x) >> 10)) /* (4.7) */
|
||||||
|
#define R(a,b,c,d,e,f,g,h,k,w) \
|
||||||
|
do \
|
||||||
|
{ \
|
||||||
|
t1 = (h) + sum1((e)) + f1((e),(f),(g)) + (k) + (w); \
|
||||||
|
t2 = sum0((a)) + f3((a),(b),(c)); \
|
||||||
|
h = g; \
|
||||||
|
g = f; \
|
||||||
|
f = e; \
|
||||||
|
e = d + t1; \
|
||||||
|
d = c; \
|
||||||
|
c = b; \
|
||||||
|
b = a; \
|
||||||
|
a = t1 + t2; \
|
||||||
|
} while (0)
|
||||||
|
|
||||||
|
/*
|
||||||
|
The SHA-256 core: Transform the message X which consists of 16
|
||||||
|
32-bit-words. See FIPS 180-2 for details.
|
||||||
|
*/
|
||||||
|
static uint
|
||||||
|
sha256_transform_block(struct sha256_context *ctx, const byte *data)
|
||||||
|
{
|
||||||
|
static const u32 K[64] = {
|
||||||
|
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
|
||||||
|
0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
|
||||||
|
0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
|
||||||
|
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
|
||||||
|
0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
|
||||||
|
0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
|
||||||
|
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
|
||||||
|
0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
|
||||||
|
0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
|
||||||
|
0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
|
||||||
|
0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
|
||||||
|
0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
|
||||||
|
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
|
||||||
|
0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
|
||||||
|
0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
|
||||||
|
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
|
||||||
|
};
|
||||||
|
|
||||||
|
u32 a,b,c,d,e,f,g,h,t1,t2;
|
||||||
|
u32 w[64];
|
||||||
|
int i;
|
||||||
|
|
||||||
|
a = ctx->h0;
|
||||||
|
b = ctx->h1;
|
||||||
|
c = ctx->h2;
|
||||||
|
d = ctx->h3;
|
||||||
|
e = ctx->h4;
|
||||||
|
f = ctx->h5;
|
||||||
|
g = ctx->h6;
|
||||||
|
h = ctx->h7;
|
||||||
|
|
||||||
|
for (i = 0; i < 16; i++)
|
||||||
|
w[i] = get_u32(data + i * 4);
|
||||||
|
for (; i < 64; i++)
|
||||||
|
w[i] = S1(w[i-2]) + w[i-7] + S0(w[i-15]) + w[i-16];
|
||||||
|
|
||||||
|
for (i = 0; i < 64;)
|
||||||
|
{
|
||||||
|
t1 = h + sum1(e) + f1(e, f, g) + K[i] + w[i];
|
||||||
|
t2 = sum0 (a) + f3(a, b, c);
|
||||||
|
d += t1;
|
||||||
|
h = t1 + t2;
|
||||||
|
|
||||||
|
t1 = g + sum1(d) + f1(d, e, f) + K[i+1] + w[i+1];
|
||||||
|
t2 = sum0 (h) + f3(h, a, b);
|
||||||
|
c += t1;
|
||||||
|
g = t1 + t2;
|
||||||
|
|
||||||
|
t1 = f + sum1(c) + f1(c, d, e) + K[i+2] + w[i+2];
|
||||||
|
t2 = sum0 (g) + f3(g, h, a);
|
||||||
|
b += t1;
|
||||||
|
f = t1 + t2;
|
||||||
|
|
||||||
|
t1 = e + sum1(b) + f1(b, c, d) + K[i+3] + w[i+3];
|
||||||
|
t2 = sum0 (f) + f3(f, g, h);
|
||||||
|
a += t1;
|
||||||
|
e = t1 + t2;
|
||||||
|
|
||||||
|
t1 = d + sum1(a) + f1(a, b, c) + K[i+4] + w[i+4];
|
||||||
|
t2 = sum0 (e) + f3(e, f, g);
|
||||||
|
h += t1;
|
||||||
|
d = t1 + t2;
|
||||||
|
|
||||||
|
t1 = c + sum1(h) + f1(h, a, b) + K[i+5] + w[i+5];
|
||||||
|
t2 = sum0 (d) + f3(d, e, f);
|
||||||
|
g += t1;
|
||||||
|
c = t1 + t2;
|
||||||
|
|
||||||
|
t1 = b + sum1(g) + f1(g, h, a) + K[i+6] + w[i+6];
|
||||||
|
t2 = sum0 (c) + f3(c, d, e);
|
||||||
|
f += t1;
|
||||||
|
b = t1 + t2;
|
||||||
|
|
||||||
|
t1 = a + sum1(f) + f1(f, g, h) + K[i+7] + w[i+7];
|
||||||
|
t2 = sum0 (b) + f3(b, c, d);
|
||||||
|
e += t1;
|
||||||
|
a = t1 + t2;
|
||||||
|
|
||||||
|
i += 8;
|
||||||
|
}
|
||||||
|
|
||||||
|
ctx->h0 += a;
|
||||||
|
ctx->h1 += b;
|
||||||
|
ctx->h2 += c;
|
||||||
|
ctx->h3 += d;
|
||||||
|
ctx->h4 += e;
|
||||||
|
ctx->h5 += f;
|
||||||
|
ctx->h6 += g;
|
||||||
|
ctx->h7 += h;
|
||||||
|
|
||||||
|
return /*burn_stack*/ 74*4+32;
|
||||||
|
}
|
||||||
|
#undef S0
|
||||||
|
#undef S1
|
||||||
|
#undef R
|
||||||
|
|
||||||
|
static uint
|
||||||
|
sha256_transform(void *ctx, const byte *data, size_t nblks)
|
||||||
|
{
|
||||||
|
struct sha256_context *hd = ctx;
|
||||||
|
uint burn;
|
||||||
|
|
||||||
|
do
|
||||||
|
{
|
||||||
|
burn = sha256_transform_block(hd, data);
|
||||||
|
data += 64;
|
||||||
|
}
|
||||||
|
while (--nblks);
|
||||||
|
|
||||||
|
return burn;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Common function to write a chunk of data to the transform function
|
||||||
|
of a hash algorithm. Note that the use of the term "block" does
|
||||||
|
not imply a fixed size block. Note that we explicitly allow to use
|
||||||
|
this function after the context has been finalized; the result does
|
||||||
|
not have any meaning but writing after finalize is sometimes
|
||||||
|
helpful to mitigate timing attacks. */
|
||||||
|
void
|
||||||
|
sha256_update(struct sha256_context *ctx, const byte *in_buf, size_t in_len)
|
||||||
|
{
|
||||||
|
const uint blocksize = ctx->blocksize;
|
||||||
|
size_t inblocks;
|
||||||
|
|
||||||
|
if (sizeof(ctx->buf) < blocksize)
|
||||||
|
debug("BUG: in file %s at line %d", __FILE__ , __LINE__);
|
||||||
|
|
||||||
|
if (ctx->count == blocksize) /* Flush the buffer. */
|
||||||
|
{
|
||||||
|
ctx->transform(ctx, ctx->buf, 1);
|
||||||
|
ctx->count = 0;
|
||||||
|
if (!++ctx->nblocks)
|
||||||
|
ctx->nblocks_high++;
|
||||||
|
}
|
||||||
|
if (!in_buf)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (ctx->count)
|
||||||
|
{
|
||||||
|
for (; in_len && ctx->count < blocksize; in_len--)
|
||||||
|
ctx->buf[ctx->count++] = *in_buf++;
|
||||||
|
sha256_update(ctx, NULL, 0);
|
||||||
|
if (!in_len)
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (in_len >= blocksize)
|
||||||
|
{
|
||||||
|
inblocks = in_len / blocksize;
|
||||||
|
ctx->transform(ctx, in_buf, inblocks);
|
||||||
|
ctx->count = 0;
|
||||||
|
ctx->nblocks_high += (ctx->nblocks + inblocks < inblocks);
|
||||||
|
ctx->nblocks += inblocks;
|
||||||
|
in_len -= inblocks * blocksize;
|
||||||
|
in_buf += inblocks * blocksize;
|
||||||
|
}
|
||||||
|
for (; in_len && ctx->count < blocksize; in_len--)
|
||||||
|
ctx->buf[ctx->count++] = *in_buf++;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
The routine finally terminates the computation and returns the
|
||||||
|
digest. The handle is prepared for a new cycle, but adding bytes
|
||||||
|
to the handle will the destroy the returned buffer. Returns: 32
|
||||||
|
bytes with the message the digest. */
|
||||||
|
byte*
|
||||||
|
sha256_final(struct sha256_context *ctx)
|
||||||
|
{
|
||||||
|
u32 t, th, msb, lsb;
|
||||||
|
byte *p;
|
||||||
|
|
||||||
|
sha256_update(ctx, NULL, 0); /* flush */;
|
||||||
|
|
||||||
|
t = ctx->nblocks;
|
||||||
|
if (sizeof t == sizeof ctx->nblocks)
|
||||||
|
th = ctx->nblocks_high;
|
||||||
|
else
|
||||||
|
th = 0;
|
||||||
|
|
||||||
|
/* multiply by 64 to make a byte count */
|
||||||
|
lsb = t << 6;
|
||||||
|
msb = (th << 6) | (t >> 26);
|
||||||
|
/* add the count */
|
||||||
|
t = lsb;
|
||||||
|
if ((lsb += ctx->count) < t)
|
||||||
|
msb++;
|
||||||
|
/* multiply by 8 to make a bit count */
|
||||||
|
t = lsb;
|
||||||
|
lsb <<= 3;
|
||||||
|
msb <<= 3;
|
||||||
|
msb |= t >> 29;
|
||||||
|
|
||||||
|
if (ctx->count < 56)
|
||||||
|
{ /* enough room */
|
||||||
|
ctx->buf[ctx->count++] = 0x80; /* pad */
|
||||||
|
while (ctx->count < 56)
|
||||||
|
ctx->buf[ctx->count++] = 0; /* pad */
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{ /* need one extra block */
|
||||||
|
ctx->buf[ctx->count++] = 0x80; /* pad character */
|
||||||
|
while (ctx->count < 64)
|
||||||
|
ctx->buf[ctx->count++] = 0;
|
||||||
|
sha256_update(ctx, NULL, 0); /* flush */;
|
||||||
|
memset (ctx->buf, 0, 56 ); /* fill next block with zeroes */
|
||||||
|
}
|
||||||
|
/* append the 64 bit count */
|
||||||
|
put_u32(ctx->buf + 56, msb);
|
||||||
|
put_u32(ctx->buf + 60, lsb);
|
||||||
|
sha256_transform(ctx, ctx->buf, 1);
|
||||||
|
|
||||||
|
p = ctx->buf;
|
||||||
|
|
||||||
|
#define X(a) do { put_u32(p, ctx->h##a); p += 4; } while(0)
|
||||||
|
X(0);
|
||||||
|
X(1);
|
||||||
|
X(2);
|
||||||
|
X(3);
|
||||||
|
X(4);
|
||||||
|
X(5);
|
||||||
|
X(6);
|
||||||
|
X(7);
|
||||||
|
#undef X
|
||||||
|
|
||||||
|
return ctx->buf;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* SHA256-HMAC
|
||||||
|
*/
|
||||||
|
|
||||||
|
static void
|
||||||
|
sha256_hash_buffer(byte *outbuf, const byte *buffer, size_t length)
|
||||||
|
{
|
||||||
|
struct sha256_context hd_tmp;
|
||||||
|
|
||||||
|
sha256_init(&hd_tmp);
|
||||||
|
sha256_update(&hd_tmp, buffer, length);
|
||||||
|
memcpy(outbuf, sha256_final(&hd_tmp), SHA256_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
sha256_hmac_init(struct sha256_hmac_context *ctx, const byte *key, size_t keylen)
|
||||||
|
{
|
||||||
|
byte keybuf[SHA256_BLOCK_SIZE], buf[SHA256_BLOCK_SIZE];
|
||||||
|
|
||||||
|
/* Hash the key if necessary */
|
||||||
|
if (keylen <= SHA256_BLOCK_SIZE)
|
||||||
|
{
|
||||||
|
memcpy(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + keylen, SHA256_BLOCK_SIZE - keylen);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
sha256_hash_buffer(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + SHA256_SIZE, SHA256_BLOCK_SIZE - SHA256_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Initialize the inner digest */
|
||||||
|
sha256_init(&ctx->ictx);
|
||||||
|
int i;
|
||||||
|
for (i = 0; i < SHA256_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x36;
|
||||||
|
sha256_update(&ctx->ictx, buf, SHA256_BLOCK_SIZE);
|
||||||
|
|
||||||
|
/* Initialize the outer digest */
|
||||||
|
sha256_init(&ctx->octx);
|
||||||
|
for (i = 0; i < SHA256_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x5c;
|
||||||
|
sha256_update(&ctx->octx, buf, SHA256_BLOCK_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void sha256_hmac_update(struct sha256_hmac_context *ctx, const byte *buf, size_t buflen)
|
||||||
|
{
|
||||||
|
/* Just update the inner digest */
|
||||||
|
sha256_update(&ctx->ictx, buf, buflen);
|
||||||
|
}
|
||||||
|
|
||||||
|
byte *sha256_hmac_final(struct sha256_hmac_context *ctx)
|
||||||
|
{
|
||||||
|
/* Finish the inner digest */
|
||||||
|
byte *isha = sha256_final(&ctx->ictx);
|
||||||
|
|
||||||
|
/* Finish the outer digest */
|
||||||
|
sha256_update(&ctx->octx, isha, SHA256_SIZE);
|
||||||
|
return sha256_final(&ctx->octx);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* SHA224-HMAC
|
||||||
|
*/
|
||||||
|
|
||||||
|
static void
|
||||||
|
sha224_hash_buffer(byte *outbuf, const byte *buffer, size_t length)
|
||||||
|
{
|
||||||
|
struct sha224_context hd_tmp;
|
||||||
|
|
||||||
|
sha224_init(&hd_tmp);
|
||||||
|
sha224_update(&hd_tmp, buffer, length);
|
||||||
|
memcpy(outbuf, sha224_final(&hd_tmp), SHA224_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
sha224_hmac_init(struct sha224_hmac_context *ctx, const byte *key, size_t keylen)
|
||||||
|
{
|
||||||
|
byte keybuf[SHA224_BLOCK_SIZE], buf[SHA224_BLOCK_SIZE];
|
||||||
|
|
||||||
|
/* Hash the key if necessary */
|
||||||
|
if (keylen <= SHA224_BLOCK_SIZE)
|
||||||
|
{
|
||||||
|
memcpy(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + keylen, SHA224_BLOCK_SIZE - keylen);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
sha224_hash_buffer(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + SHA224_SIZE, SHA224_BLOCK_SIZE - SHA224_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Initialize the inner digest */
|
||||||
|
sha224_init(&ctx->ictx);
|
||||||
|
int i;
|
||||||
|
for (i = 0; i < SHA224_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x36;
|
||||||
|
sha224_update(&ctx->ictx, buf, SHA224_BLOCK_SIZE);
|
||||||
|
|
||||||
|
/* Initialize the outer digest */
|
||||||
|
sha224_init(&ctx->octx);
|
||||||
|
for (i = 0; i < SHA224_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x5c;
|
||||||
|
sha224_update(&ctx->octx, buf, SHA224_BLOCK_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void sha224_hmac_update(struct sha224_hmac_context *ctx, const byte *buf, size_t buflen)
|
||||||
|
{
|
||||||
|
/* Just update the inner digest */
|
||||||
|
sha256_update(&ctx->ictx, buf, buflen);
|
||||||
|
}
|
||||||
|
|
||||||
|
byte *sha224_hmac_final(struct sha224_hmac_context *ctx)
|
||||||
|
{
|
||||||
|
/* Finish the inner digest */
|
||||||
|
byte *isha = sha224_final(&ctx->ictx);
|
||||||
|
|
||||||
|
/* Finish the outer digest */
|
||||||
|
sha224_update(&ctx->octx, isha, SHA224_SIZE);
|
||||||
|
return sha224_final(&ctx->octx);
|
||||||
|
}
|
71
lib/sha256.h
Normal file
71
lib/sha256.h
Normal file
@ -0,0 +1,71 @@
|
|||||||
|
/*
|
||||||
|
* BIRD Library -- SHA-256 and SHA-224 Hash Functions,
|
||||||
|
* HMAC-SHA-256 and HMAC-SHA-224 Functions
|
||||||
|
*
|
||||||
|
* (c) 2015 CZ.NIC z.s.p.o.
|
||||||
|
*
|
||||||
|
* Based on the code from libgcrypt-1.6.0, which is
|
||||||
|
* (c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc.
|
||||||
|
*
|
||||||
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _BIRD_SHA256_H_
|
||||||
|
#define _BIRD_SHA256_H_
|
||||||
|
|
||||||
|
#include "nest/bird.h"
|
||||||
|
|
||||||
|
#define SHA224_SIZE 28
|
||||||
|
#define SHA224_HEX_SIZE 57
|
||||||
|
#define SHA224_BLOCK_SIZE 64
|
||||||
|
|
||||||
|
#define SHA256_SIZE 32
|
||||||
|
#define SHA256_HEX_SIZE 65
|
||||||
|
#define SHA256_BLOCK_SIZE 64
|
||||||
|
|
||||||
|
struct sha256_context {
|
||||||
|
u32 h0,h1,h2,h3,h4,h5,h6,h7;
|
||||||
|
byte buf[128]; /* 128 is for SHA384 and SHA512 support, otherwise for SHA224 and SHA256 is 64 enough */
|
||||||
|
u32 nblocks;
|
||||||
|
u32 nblocks_high;
|
||||||
|
int count;
|
||||||
|
u32 blocksize;
|
||||||
|
uint (*transform)(void *c, const byte *blks, size_t nblks);
|
||||||
|
};
|
||||||
|
#define sha224_context sha256_context /* aliasing 'struct sha224_context' to 'struct sha256_context' */
|
||||||
|
|
||||||
|
void sha256_init(struct sha256_context *ctx);
|
||||||
|
void sha224_init(struct sha224_context *ctx);
|
||||||
|
|
||||||
|
void sha256_update(struct sha256_context *ctx, const byte *in_buf, size_t in_len);
|
||||||
|
static inline void sha224_update(struct sha224_context *ctx, const byte *in_buf, size_t in_len)
|
||||||
|
{
|
||||||
|
sha256_update(ctx, in_buf, in_len);
|
||||||
|
}
|
||||||
|
|
||||||
|
byte* sha256_final(struct sha256_context *ctx);
|
||||||
|
static inline byte* sha224_final(struct sha224_context *ctx)
|
||||||
|
{
|
||||||
|
return sha256_final(ctx);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* HMAC-SHA256, HMAC-SHA224
|
||||||
|
*/
|
||||||
|
struct sha256_hmac_context
|
||||||
|
{
|
||||||
|
struct sha256_context ictx;
|
||||||
|
struct sha256_context octx;
|
||||||
|
};
|
||||||
|
#define sha224_hmac_context sha256_hmac_context /* aliasing 'struct sha224_hmac_context' to 'struct sha256_hmac_context' */
|
||||||
|
|
||||||
|
void sha256_hmac_init(struct sha256_hmac_context *ctx, const byte *key, size_t keylen);
|
||||||
|
void sha224_hmac_init(struct sha224_hmac_context *ctx, const byte *key, size_t keylen);
|
||||||
|
|
||||||
|
void sha256_hmac_update(struct sha256_hmac_context *ctx, const byte *buf, size_t buflen);
|
||||||
|
void sha224_hmac_update(struct sha224_hmac_context *ctx, const byte *buf, size_t buflen);
|
||||||
|
|
||||||
|
byte *sha256_hmac_final(struct sha256_hmac_context *ctx);
|
||||||
|
byte *sha224_hmac_final(struct sha224_hmac_context *ctx);
|
||||||
|
|
||||||
|
#endif /* _BIRD_SHA256_H_ */
|
614
lib/sha512.c
Normal file
614
lib/sha512.c
Normal file
@ -0,0 +1,614 @@
|
|||||||
|
/*
|
||||||
|
* BIRD Library -- SHA-512 and SHA-384 Hash Functions,
|
||||||
|
* HMAC-SHA-512 and HMAC-SHA-384 Functions
|
||||||
|
*
|
||||||
|
* (c) 2015 CZ.NIC z.s.p.o.
|
||||||
|
*
|
||||||
|
* Based on the code from libgcrypt-1.6.0, which is
|
||||||
|
* (c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc.
|
||||||
|
*
|
||||||
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include "lib/sha256.h"
|
||||||
|
#include "lib/sha512.h"
|
||||||
|
#include "lib/unaligned.h"
|
||||||
|
|
||||||
|
static uint sha512_transform(void *context, const byte *data, size_t nblks);
|
||||||
|
|
||||||
|
void
|
||||||
|
sha512_init(struct sha512_context *ctx)
|
||||||
|
{
|
||||||
|
struct sha512_state *hd = &ctx->state;
|
||||||
|
|
||||||
|
hd->h0 = UINT64_C(0x6a09e667f3bcc908);
|
||||||
|
hd->h1 = UINT64_C(0xbb67ae8584caa73b);
|
||||||
|
hd->h2 = UINT64_C(0x3c6ef372fe94f82b);
|
||||||
|
hd->h3 = UINT64_C(0xa54ff53a5f1d36f1);
|
||||||
|
hd->h4 = UINT64_C(0x510e527fade682d1);
|
||||||
|
hd->h5 = UINT64_C(0x9b05688c2b3e6c1f);
|
||||||
|
hd->h6 = UINT64_C(0x1f83d9abfb41bd6b);
|
||||||
|
hd->h7 = UINT64_C(0x5be0cd19137e2179);
|
||||||
|
|
||||||
|
ctx->bctx.nblocks = 0;
|
||||||
|
ctx->bctx.nblocks_high = 0;
|
||||||
|
ctx->bctx.count = 0;
|
||||||
|
ctx->bctx.blocksize = 128;
|
||||||
|
ctx->bctx.transform = sha512_transform;
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
sha384_init(struct sha384_context *ctx)
|
||||||
|
{
|
||||||
|
struct sha512_state *hd = &ctx->state;
|
||||||
|
|
||||||
|
hd->h0 = UINT64_C(0xcbbb9d5dc1059ed8);
|
||||||
|
hd->h1 = UINT64_C(0x629a292a367cd507);
|
||||||
|
hd->h2 = UINT64_C(0x9159015a3070dd17);
|
||||||
|
hd->h3 = UINT64_C(0x152fecd8f70e5939);
|
||||||
|
hd->h4 = UINT64_C(0x67332667ffc00b31);
|
||||||
|
hd->h5 = UINT64_C(0x8eb44a8768581511);
|
||||||
|
hd->h6 = UINT64_C(0xdb0c2e0d64f98fa7);
|
||||||
|
hd->h7 = UINT64_C(0x47b5481dbefa4fa4);
|
||||||
|
|
||||||
|
ctx->bctx.nblocks = 0;
|
||||||
|
ctx->bctx.nblocks_high = 0;
|
||||||
|
ctx->bctx.count = 0;
|
||||||
|
ctx->bctx.blocksize = 128;
|
||||||
|
ctx->bctx.transform = sha512_transform;
|
||||||
|
}
|
||||||
|
|
||||||
|
void sha512_update(struct sha512_context *ctx, const byte *in_buf, size_t in_len)
|
||||||
|
{
|
||||||
|
sha256_update(&ctx->bctx, in_buf, in_len);
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline u64
|
||||||
|
ROTR(u64 x, u64 n)
|
||||||
|
{
|
||||||
|
return ((x >> n) | (x << (64 - n)));
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline u64
|
||||||
|
Ch(u64 x, u64 y, u64 z)
|
||||||
|
{
|
||||||
|
return ((x & y) ^ ( ~x & z));
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline u64
|
||||||
|
Maj(u64 x, u64 y, u64 z)
|
||||||
|
{
|
||||||
|
return ((x & y) ^ (x & z) ^ (y & z));
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline u64
|
||||||
|
Sum0(u64 x)
|
||||||
|
{
|
||||||
|
return (ROTR (x, 28) ^ ROTR (x, 34) ^ ROTR (x, 39));
|
||||||
|
}
|
||||||
|
|
||||||
|
static inline u64
|
||||||
|
Sum1 (u64 x)
|
||||||
|
{
|
||||||
|
return (ROTR (x, 14) ^ ROTR (x, 18) ^ ROTR (x, 41));
|
||||||
|
}
|
||||||
|
|
||||||
|
static const u64 k[] =
|
||||||
|
{
|
||||||
|
UINT64_C(0x428a2f98d728ae22), UINT64_C(0x7137449123ef65cd),
|
||||||
|
UINT64_C(0xb5c0fbcfec4d3b2f), UINT64_C(0xe9b5dba58189dbbc),
|
||||||
|
UINT64_C(0x3956c25bf348b538), UINT64_C(0x59f111f1b605d019),
|
||||||
|
UINT64_C(0x923f82a4af194f9b), UINT64_C(0xab1c5ed5da6d8118),
|
||||||
|
UINT64_C(0xd807aa98a3030242), UINT64_C(0x12835b0145706fbe),
|
||||||
|
UINT64_C(0x243185be4ee4b28c), UINT64_C(0x550c7dc3d5ffb4e2),
|
||||||
|
UINT64_C(0x72be5d74f27b896f), UINT64_C(0x80deb1fe3b1696b1),
|
||||||
|
UINT64_C(0x9bdc06a725c71235), UINT64_C(0xc19bf174cf692694),
|
||||||
|
UINT64_C(0xe49b69c19ef14ad2), UINT64_C(0xefbe4786384f25e3),
|
||||||
|
UINT64_C(0x0fc19dc68b8cd5b5), UINT64_C(0x240ca1cc77ac9c65),
|
||||||
|
UINT64_C(0x2de92c6f592b0275), UINT64_C(0x4a7484aa6ea6e483),
|
||||||
|
UINT64_C(0x5cb0a9dcbd41fbd4), UINT64_C(0x76f988da831153b5),
|
||||||
|
UINT64_C(0x983e5152ee66dfab), UINT64_C(0xa831c66d2db43210),
|
||||||
|
UINT64_C(0xb00327c898fb213f), UINT64_C(0xbf597fc7beef0ee4),
|
||||||
|
UINT64_C(0xc6e00bf33da88fc2), UINT64_C(0xd5a79147930aa725),
|
||||||
|
UINT64_C(0x06ca6351e003826f), UINT64_C(0x142929670a0e6e70),
|
||||||
|
UINT64_C(0x27b70a8546d22ffc), UINT64_C(0x2e1b21385c26c926),
|
||||||
|
UINT64_C(0x4d2c6dfc5ac42aed), UINT64_C(0x53380d139d95b3df),
|
||||||
|
UINT64_C(0x650a73548baf63de), UINT64_C(0x766a0abb3c77b2a8),
|
||||||
|
UINT64_C(0x81c2c92e47edaee6), UINT64_C(0x92722c851482353b),
|
||||||
|
UINT64_C(0xa2bfe8a14cf10364), UINT64_C(0xa81a664bbc423001),
|
||||||
|
UINT64_C(0xc24b8b70d0f89791), UINT64_C(0xc76c51a30654be30),
|
||||||
|
UINT64_C(0xd192e819d6ef5218), UINT64_C(0xd69906245565a910),
|
||||||
|
UINT64_C(0xf40e35855771202a), UINT64_C(0x106aa07032bbd1b8),
|
||||||
|
UINT64_C(0x19a4c116b8d2d0c8), UINT64_C(0x1e376c085141ab53),
|
||||||
|
UINT64_C(0x2748774cdf8eeb99), UINT64_C(0x34b0bcb5e19b48a8),
|
||||||
|
UINT64_C(0x391c0cb3c5c95a63), UINT64_C(0x4ed8aa4ae3418acb),
|
||||||
|
UINT64_C(0x5b9cca4f7763e373), UINT64_C(0x682e6ff3d6b2b8a3),
|
||||||
|
UINT64_C(0x748f82ee5defb2fc), UINT64_C(0x78a5636f43172f60),
|
||||||
|
UINT64_C(0x84c87814a1f0ab72), UINT64_C(0x8cc702081a6439ec),
|
||||||
|
UINT64_C(0x90befffa23631e28), UINT64_C(0xa4506cebde82bde9),
|
||||||
|
UINT64_C(0xbef9a3f7b2c67915), UINT64_C(0xc67178f2e372532b),
|
||||||
|
UINT64_C(0xca273eceea26619c), UINT64_C(0xd186b8c721c0c207),
|
||||||
|
UINT64_C(0xeada7dd6cde0eb1e), UINT64_C(0xf57d4f7fee6ed178),
|
||||||
|
UINT64_C(0x06f067aa72176fba), UINT64_C(0x0a637dc5a2c898a6),
|
||||||
|
UINT64_C(0x113f9804bef90dae), UINT64_C(0x1b710b35131c471b),
|
||||||
|
UINT64_C(0x28db77f523047d84), UINT64_C(0x32caab7b40c72493),
|
||||||
|
UINT64_C(0x3c9ebe0a15c9bebc), UINT64_C(0x431d67c49c100d4c),
|
||||||
|
UINT64_C(0x4cc5d4becb3e42b6), UINT64_C(0x597f299cfc657e2a),
|
||||||
|
UINT64_C(0x5fcb6fab3ad6faec), UINT64_C(0x6c44198c4a475817)
|
||||||
|
};
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Transform the message W which consists of 16 64-bit-words
|
||||||
|
*/
|
||||||
|
static uint
|
||||||
|
sha512_transform_block(struct sha512_state *hd, const byte *data)
|
||||||
|
{
|
||||||
|
u64 a, b, c, d, e, f, g, h;
|
||||||
|
u64 w[16];
|
||||||
|
int t;
|
||||||
|
|
||||||
|
/* get values from the chaining vars */
|
||||||
|
a = hd->h0;
|
||||||
|
b = hd->h1;
|
||||||
|
c = hd->h2;
|
||||||
|
d = hd->h3;
|
||||||
|
e = hd->h4;
|
||||||
|
f = hd->h5;
|
||||||
|
g = hd->h6;
|
||||||
|
h = hd->h7;
|
||||||
|
|
||||||
|
for ( t = 0; t < 16; t++ )
|
||||||
|
w[t] = get_u64(data + t * 8);
|
||||||
|
|
||||||
|
#define S0(x) (ROTR((x),1) ^ ROTR((x),8) ^ ((x)>>7))
|
||||||
|
#define S1(x) (ROTR((x),19) ^ ROTR((x),61) ^ ((x)>>6))
|
||||||
|
|
||||||
|
for (t = 0; t < 80 - 16; )
|
||||||
|
{
|
||||||
|
u64 t1, t2;
|
||||||
|
|
||||||
|
/* Performance on a AMD Athlon(tm) Dual Core Processor 4050e
|
||||||
|
with gcc 4.3.3 using gcry_md_hash_buffer of each 10000 bytes
|
||||||
|
initialized to 0,1,2,3...255,0,... and 1000 iterations:
|
||||||
|
|
||||||
|
Not unrolled with macros: 440ms
|
||||||
|
Unrolled with macros: 350ms
|
||||||
|
Unrolled with inline: 330ms
|
||||||
|
*/
|
||||||
|
#if 0 /* Not unrolled. */
|
||||||
|
t1 = h + Sum1 (e) + Ch(e, f, g) + k[t] + w[t%16];
|
||||||
|
w[t%16] += S1 (w[(t - 2)%16]) + w[(t - 7)%16] + S0 (w[(t - 15)%16]);
|
||||||
|
t2 = Sum0 (a) + Maj(a, b, c);
|
||||||
|
h = g;
|
||||||
|
g = f;
|
||||||
|
f = e;
|
||||||
|
e = d + t1;
|
||||||
|
d = c;
|
||||||
|
c = b;
|
||||||
|
b = a;
|
||||||
|
a = t1 + t2;
|
||||||
|
t++;
|
||||||
|
#else /* Unrolled to interweave the chain variables. */
|
||||||
|
t1 = h + Sum1 (e) + Ch(e, f, g) + k[t] + w[0];
|
||||||
|
w[0] += S1 (w[14]) + w[9] + S0 (w[1]);
|
||||||
|
t2 = Sum0 (a) + Maj(a, b, c);
|
||||||
|
d += t1;
|
||||||
|
h = t1 + t2;
|
||||||
|
|
||||||
|
t1 = g + Sum1 (d) + Ch(d, e, f) + k[t+1] + w[1];
|
||||||
|
w[1] += S1 (w[15]) + w[10] + S0 (w[2]);
|
||||||
|
t2 = Sum0 (h) + Maj(h, a, b);
|
||||||
|
c += t1;
|
||||||
|
g = t1 + t2;
|
||||||
|
|
||||||
|
t1 = f + Sum1 (c) + Ch(c, d, e) + k[t+2] + w[2];
|
||||||
|
w[2] += S1 (w[0]) + w[11] + S0 (w[3]);
|
||||||
|
t2 = Sum0 (g) + Maj(g, h, a);
|
||||||
|
b += t1;
|
||||||
|
f = t1 + t2;
|
||||||
|
|
||||||
|
t1 = e + Sum1 (b) + Ch(b, c, d) + k[t+3] + w[3];
|
||||||
|
w[3] += S1 (w[1]) + w[12] + S0 (w[4]);
|
||||||
|
t2 = Sum0 (f) + Maj(f, g, h);
|
||||||
|
a += t1;
|
||||||
|
e = t1 + t2;
|
||||||
|
|
||||||
|
t1 = d + Sum1 (a) + Ch(a, b, c) + k[t+4] + w[4];
|
||||||
|
w[4] += S1 (w[2]) + w[13] + S0 (w[5]);
|
||||||
|
t2 = Sum0 (e) + Maj(e, f, g);
|
||||||
|
h += t1;
|
||||||
|
d = t1 + t2;
|
||||||
|
|
||||||
|
t1 = c + Sum1 (h) + Ch(h, a, b) + k[t+5] + w[5];
|
||||||
|
w[5] += S1 (w[3]) + w[14] + S0 (w[6]);
|
||||||
|
t2 = Sum0 (d) + Maj(d, e, f);
|
||||||
|
g += t1;
|
||||||
|
c = t1 + t2;
|
||||||
|
|
||||||
|
t1 = b + Sum1 (g) + Ch(g, h, a) + k[t+6] + w[6];
|
||||||
|
w[6] += S1 (w[4]) + w[15] + S0 (w[7]);
|
||||||
|
t2 = Sum0 (c) + Maj(c, d, e);
|
||||||
|
f += t1;
|
||||||
|
b = t1 + t2;
|
||||||
|
|
||||||
|
t1 = a + Sum1 (f) + Ch(f, g, h) + k[t+7] + w[7];
|
||||||
|
w[7] += S1 (w[5]) + w[0] + S0 (w[8]);
|
||||||
|
t2 = Sum0 (b) + Maj(b, c, d);
|
||||||
|
e += t1;
|
||||||
|
a = t1 + t2;
|
||||||
|
|
||||||
|
t1 = h + Sum1 (e) + Ch(e, f, g) + k[t+8] + w[8];
|
||||||
|
w[8] += S1 (w[6]) + w[1] + S0 (w[9]);
|
||||||
|
t2 = Sum0 (a) + Maj(a, b, c);
|
||||||
|
d += t1;
|
||||||
|
h = t1 + t2;
|
||||||
|
|
||||||
|
t1 = g + Sum1 (d) + Ch(d, e, f) + k[t+9] + w[9];
|
||||||
|
w[9] += S1 (w[7]) + w[2] + S0 (w[10]);
|
||||||
|
t2 = Sum0 (h) + Maj(h, a, b);
|
||||||
|
c += t1;
|
||||||
|
g = t1 + t2;
|
||||||
|
|
||||||
|
t1 = f + Sum1 (c) + Ch(c, d, e) + k[t+10] + w[10];
|
||||||
|
w[10] += S1 (w[8]) + w[3] + S0 (w[11]);
|
||||||
|
t2 = Sum0 (g) + Maj(g, h, a);
|
||||||
|
b += t1;
|
||||||
|
f = t1 + t2;
|
||||||
|
|
||||||
|
t1 = e + Sum1 (b) + Ch(b, c, d) + k[t+11] + w[11];
|
||||||
|
w[11] += S1 (w[9]) + w[4] + S0 (w[12]);
|
||||||
|
t2 = Sum0 (f) + Maj(f, g, h);
|
||||||
|
a += t1;
|
||||||
|
e = t1 + t2;
|
||||||
|
|
||||||
|
t1 = d + Sum1 (a) + Ch(a, b, c) + k[t+12] + w[12];
|
||||||
|
w[12] += S1 (w[10]) + w[5] + S0 (w[13]);
|
||||||
|
t2 = Sum0 (e) + Maj(e, f, g);
|
||||||
|
h += t1;
|
||||||
|
d = t1 + t2;
|
||||||
|
|
||||||
|
t1 = c + Sum1 (h) + Ch(h, a, b) + k[t+13] + w[13];
|
||||||
|
w[13] += S1 (w[11]) + w[6] + S0 (w[14]);
|
||||||
|
t2 = Sum0 (d) + Maj(d, e, f);
|
||||||
|
g += t1;
|
||||||
|
c = t1 + t2;
|
||||||
|
|
||||||
|
t1 = b + Sum1 (g) + Ch(g, h, a) + k[t+14] + w[14];
|
||||||
|
w[14] += S1 (w[12]) + w[7] + S0 (w[15]);
|
||||||
|
t2 = Sum0 (c) + Maj(c, d, e);
|
||||||
|
f += t1;
|
||||||
|
b = t1 + t2;
|
||||||
|
|
||||||
|
t1 = a + Sum1 (f) + Ch(f, g, h) + k[t+15] + w[15];
|
||||||
|
w[15] += S1 (w[13]) + w[8] + S0 (w[0]);
|
||||||
|
t2 = Sum0 (b) + Maj(b, c, d);
|
||||||
|
e += t1;
|
||||||
|
a = t1 + t2;
|
||||||
|
|
||||||
|
t += 16;
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
for (; t < 80; )
|
||||||
|
{
|
||||||
|
u64 t1, t2;
|
||||||
|
|
||||||
|
#if 0 /* Not unrolled. */
|
||||||
|
t1 = h + Sum1 (e) + Ch(e, f, g) + k[t] + w[t%16];
|
||||||
|
t2 = Sum0 (a) + Maj(a, b, c);
|
||||||
|
h = g;
|
||||||
|
g = f;
|
||||||
|
f = e;
|
||||||
|
e = d + t1;
|
||||||
|
d = c;
|
||||||
|
c = b;
|
||||||
|
b = a;
|
||||||
|
a = t1 + t2;
|
||||||
|
t++;
|
||||||
|
#else /* Unrolled to interweave the chain variables. */
|
||||||
|
t1 = h + Sum1 (e) + Ch(e, f, g) + k[t] + w[0];
|
||||||
|
t2 = Sum0 (a) + Maj(a, b, c);
|
||||||
|
d += t1;
|
||||||
|
h = t1 + t2;
|
||||||
|
|
||||||
|
t1 = g + Sum1 (d) + Ch(d, e, f) + k[t+1] + w[1];
|
||||||
|
t2 = Sum0 (h) + Maj(h, a, b);
|
||||||
|
c += t1;
|
||||||
|
g = t1 + t2;
|
||||||
|
|
||||||
|
t1 = f + Sum1 (c) + Ch(c, d, e) + k[t+2] + w[2];
|
||||||
|
t2 = Sum0 (g) + Maj(g, h, a);
|
||||||
|
b += t1;
|
||||||
|
f = t1 + t2;
|
||||||
|
|
||||||
|
t1 = e + Sum1 (b) + Ch(b, c, d) + k[t+3] + w[3];
|
||||||
|
t2 = Sum0 (f) + Maj(f, g, h);
|
||||||
|
a += t1;
|
||||||
|
e = t1 + t2;
|
||||||
|
|
||||||
|
t1 = d + Sum1 (a) + Ch(a, b, c) + k[t+4] + w[4];
|
||||||
|
t2 = Sum0 (e) + Maj(e, f, g);
|
||||||
|
h += t1;
|
||||||
|
d = t1 + t2;
|
||||||
|
|
||||||
|
t1 = c + Sum1 (h) + Ch(h, a, b) + k[t+5] + w[5];
|
||||||
|
t2 = Sum0 (d) + Maj(d, e, f);
|
||||||
|
g += t1;
|
||||||
|
c = t1 + t2;
|
||||||
|
|
||||||
|
t1 = b + Sum1 (g) + Ch(g, h, a) + k[t+6] + w[6];
|
||||||
|
t2 = Sum0 (c) + Maj(c, d, e);
|
||||||
|
f += t1;
|
||||||
|
b = t1 + t2;
|
||||||
|
|
||||||
|
t1 = a + Sum1 (f) + Ch(f, g, h) + k[t+7] + w[7];
|
||||||
|
t2 = Sum0 (b) + Maj(b, c, d);
|
||||||
|
e += t1;
|
||||||
|
a = t1 + t2;
|
||||||
|
|
||||||
|
t1 = h + Sum1 (e) + Ch(e, f, g) + k[t+8] + w[8];
|
||||||
|
t2 = Sum0 (a) + Maj(a, b, c);
|
||||||
|
d += t1;
|
||||||
|
h = t1 + t2;
|
||||||
|
|
||||||
|
t1 = g + Sum1 (d) + Ch(d, e, f) + k[t+9] + w[9];
|
||||||
|
t2 = Sum0 (h) + Maj(h, a, b);
|
||||||
|
c += t1;
|
||||||
|
g = t1 + t2;
|
||||||
|
|
||||||
|
t1 = f + Sum1 (c) + Ch(c, d, e) + k[t+10] + w[10];
|
||||||
|
t2 = Sum0 (g) + Maj(g, h, a);
|
||||||
|
b += t1;
|
||||||
|
f = t1 + t2;
|
||||||
|
|
||||||
|
t1 = e + Sum1 (b) + Ch(b, c, d) + k[t+11] + w[11];
|
||||||
|
t2 = Sum0 (f) + Maj(f, g, h);
|
||||||
|
a += t1;
|
||||||
|
e = t1 + t2;
|
||||||
|
|
||||||
|
t1 = d + Sum1 (a) + Ch(a, b, c) + k[t+12] + w[12];
|
||||||
|
t2 = Sum0 (e) + Maj(e, f, g);
|
||||||
|
h += t1;
|
||||||
|
d = t1 + t2;
|
||||||
|
|
||||||
|
t1 = c + Sum1 (h) + Ch(h, a, b) + k[t+13] + w[13];
|
||||||
|
t2 = Sum0 (d) + Maj(d, e, f);
|
||||||
|
g += t1;
|
||||||
|
c = t1 + t2;
|
||||||
|
|
||||||
|
t1 = b + Sum1 (g) + Ch(g, h, a) + k[t+14] + w[14];
|
||||||
|
t2 = Sum0 (c) + Maj(c, d, e);
|
||||||
|
f += t1;
|
||||||
|
b = t1 + t2;
|
||||||
|
|
||||||
|
t1 = a + Sum1 (f) + Ch(f, g, h) + k[t+15] + w[15];
|
||||||
|
t2 = Sum0 (b) + Maj(b, c, d);
|
||||||
|
e += t1;
|
||||||
|
a = t1 + t2;
|
||||||
|
|
||||||
|
t += 16;
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Update chaining vars. */
|
||||||
|
hd->h0 += a;
|
||||||
|
hd->h1 += b;
|
||||||
|
hd->h2 += c;
|
||||||
|
hd->h3 += d;
|
||||||
|
hd->h4 += e;
|
||||||
|
hd->h5 += f;
|
||||||
|
hd->h6 += g;
|
||||||
|
hd->h7 += h;
|
||||||
|
|
||||||
|
return /* burn_stack */ (8 + 16) * sizeof(u64) + sizeof(u32) + 3 * sizeof(void*);
|
||||||
|
}
|
||||||
|
|
||||||
|
static uint
|
||||||
|
sha512_transform(void *context, const byte *data, size_t nblks)
|
||||||
|
{
|
||||||
|
struct sha512_context *ctx = context;
|
||||||
|
uint burn;
|
||||||
|
|
||||||
|
do
|
||||||
|
{
|
||||||
|
burn = sha512_transform_block(&ctx->state, data) + 3 * sizeof(void*);
|
||||||
|
data += 128;
|
||||||
|
}
|
||||||
|
while(--nblks);
|
||||||
|
|
||||||
|
return burn;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* The routine final terminates the computation and
|
||||||
|
* returns the digest.
|
||||||
|
* The handle is prepared for a new cycle, but adding bytes to the
|
||||||
|
* handle will the destroy the returned buffer.
|
||||||
|
* Returns: 64 bytes representing the digest. When used for sha384,
|
||||||
|
* we take the leftmost 48 of those bytes.
|
||||||
|
*/
|
||||||
|
byte *
|
||||||
|
sha512_final(struct sha512_context *ctx)
|
||||||
|
{
|
||||||
|
u64 t, th, msb, lsb;
|
||||||
|
byte *p;
|
||||||
|
|
||||||
|
sha256_update(&ctx->bctx, NULL, 0); /* flush */ ;
|
||||||
|
|
||||||
|
t = ctx->bctx.nblocks;
|
||||||
|
/* if (sizeof t == sizeof ctx->bctx.nblocks) */
|
||||||
|
th = ctx->bctx.nblocks_high;
|
||||||
|
/* else */
|
||||||
|
/* th = ctx->bctx.nblocks >> 64; In case we ever use u128 */
|
||||||
|
|
||||||
|
/* multiply by 128 to make a byte count */
|
||||||
|
lsb = t << 7;
|
||||||
|
msb = (th << 7) | (t >> 57);
|
||||||
|
/* add the count */
|
||||||
|
t = lsb;
|
||||||
|
if ((lsb += ctx->bctx.count) < t)
|
||||||
|
msb++;
|
||||||
|
/* multiply by 8 to make a bit count */
|
||||||
|
t = lsb;
|
||||||
|
lsb <<= 3;
|
||||||
|
msb <<= 3;
|
||||||
|
msb |= t >> 61;
|
||||||
|
|
||||||
|
if (ctx->bctx.count < 112)
|
||||||
|
{ /* enough room */
|
||||||
|
ctx->bctx.buf[ctx->bctx.count++] = 0x80; /* pad */
|
||||||
|
while(ctx->bctx.count < 112)
|
||||||
|
ctx->bctx.buf[ctx->bctx.count++] = 0; /* pad */
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{ /* need one extra block */
|
||||||
|
ctx->bctx.buf[ctx->bctx.count++] = 0x80; /* pad character */
|
||||||
|
while(ctx->bctx.count < 128)
|
||||||
|
ctx->bctx.buf[ctx->bctx.count++] = 0;
|
||||||
|
sha256_update(&ctx->bctx, NULL, 0); /* flush */ ;
|
||||||
|
memset(ctx->bctx.buf, 0, 112); /* fill next block with zeroes */
|
||||||
|
}
|
||||||
|
/* append the 128 bit count */
|
||||||
|
put_u64(ctx->bctx.buf + 112, msb);
|
||||||
|
put_u64(ctx->bctx.buf + 120, lsb);
|
||||||
|
sha512_transform(ctx, ctx->bctx.buf, 1);
|
||||||
|
|
||||||
|
p = ctx->bctx.buf;
|
||||||
|
#define X(a) do { put_u64(p, ctx->state.h##a); p += 8; } while(0)
|
||||||
|
X (0);
|
||||||
|
X (1);
|
||||||
|
X (2);
|
||||||
|
X (3);
|
||||||
|
X (4);
|
||||||
|
X (5);
|
||||||
|
/* Note that these last two chunks are included even for SHA384.
|
||||||
|
We just ignore them. */
|
||||||
|
X (6);
|
||||||
|
X (7);
|
||||||
|
#undef X
|
||||||
|
|
||||||
|
return ctx->bctx.buf;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* SHA512-HMAC
|
||||||
|
*/
|
||||||
|
|
||||||
|
static void
|
||||||
|
sha512_hash_buffer(byte *outbuf, const byte *buffer, size_t length)
|
||||||
|
{
|
||||||
|
struct sha512_context hd_tmp;
|
||||||
|
|
||||||
|
sha512_init(&hd_tmp);
|
||||||
|
sha512_update(&hd_tmp, buffer, length);
|
||||||
|
memcpy(outbuf, sha512_final(&hd_tmp), SHA512_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
sha512_hmac_init(struct sha512_hmac_context *ctx, const byte *key, size_t keylen)
|
||||||
|
{
|
||||||
|
byte keybuf[SHA512_BLOCK_SIZE], buf[SHA512_BLOCK_SIZE];
|
||||||
|
|
||||||
|
/* Hash the key if necessary */
|
||||||
|
if (keylen <= SHA512_BLOCK_SIZE)
|
||||||
|
{
|
||||||
|
memcpy(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + keylen, SHA512_BLOCK_SIZE - keylen);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
sha512_hash_buffer(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + SHA512_SIZE, SHA512_BLOCK_SIZE - SHA512_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Initialize the inner digest */
|
||||||
|
sha512_init(&ctx->ictx);
|
||||||
|
int i;
|
||||||
|
for (i = 0; i < SHA512_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x36;
|
||||||
|
sha512_update(&ctx->ictx, buf, SHA512_BLOCK_SIZE);
|
||||||
|
|
||||||
|
/* Initialize the outer digest */
|
||||||
|
sha512_init(&ctx->octx);
|
||||||
|
for (i = 0; i < SHA512_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x5c;
|
||||||
|
sha512_update(&ctx->octx, buf, SHA512_BLOCK_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void sha512_hmac_update(struct sha512_hmac_context *ctx, const byte *buf, size_t buflen)
|
||||||
|
{
|
||||||
|
/* Just update the inner digest */
|
||||||
|
sha512_update(&ctx->ictx, buf, buflen);
|
||||||
|
}
|
||||||
|
|
||||||
|
byte *sha512_hmac_final(struct sha512_hmac_context *ctx)
|
||||||
|
{
|
||||||
|
/* Finish the inner digest */
|
||||||
|
byte *isha = sha512_final(&ctx->ictx);
|
||||||
|
|
||||||
|
/* Finish the outer digest */
|
||||||
|
sha512_update(&ctx->octx, isha, SHA512_SIZE);
|
||||||
|
return sha512_final(&ctx->octx);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/*
|
||||||
|
* SHA384-HMAC
|
||||||
|
*/
|
||||||
|
|
||||||
|
static void
|
||||||
|
sha384_hash_buffer(byte *outbuf, const byte *buffer, size_t length)
|
||||||
|
{
|
||||||
|
struct sha384_context hd_tmp;
|
||||||
|
|
||||||
|
sha384_init(&hd_tmp);
|
||||||
|
sha384_update(&hd_tmp, buffer, length);
|
||||||
|
memcpy(outbuf, sha384_final(&hd_tmp), SHA384_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
sha384_hmac_init(struct sha384_hmac_context *ctx, const byte *key, size_t keylen)
|
||||||
|
{
|
||||||
|
byte keybuf[SHA384_BLOCK_SIZE], buf[SHA384_BLOCK_SIZE];
|
||||||
|
|
||||||
|
/* Hash the key if necessary */
|
||||||
|
if (keylen <= SHA384_BLOCK_SIZE)
|
||||||
|
{
|
||||||
|
memcpy(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + keylen, SHA384_BLOCK_SIZE - keylen);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
sha384_hash_buffer(keybuf, key, keylen);
|
||||||
|
bzero(keybuf + SHA384_SIZE, SHA384_BLOCK_SIZE - SHA384_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Initialize the inner digest */
|
||||||
|
sha384_init(&ctx->ictx);
|
||||||
|
int i;
|
||||||
|
for (i = 0; i < SHA384_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x36;
|
||||||
|
sha384_update(&ctx->ictx, buf, SHA384_BLOCK_SIZE);
|
||||||
|
|
||||||
|
/* Initialize the outer digest */
|
||||||
|
sha384_init(&ctx->octx);
|
||||||
|
for (i = 0; i < SHA384_BLOCK_SIZE; i++)
|
||||||
|
buf[i] = keybuf[i] ^ 0x5c;
|
||||||
|
sha384_update(&ctx->octx, buf, SHA384_BLOCK_SIZE);
|
||||||
|
}
|
||||||
|
|
||||||
|
void sha384_hmac_update(struct sha384_hmac_context *ctx, const byte *buf, size_t buflen)
|
||||||
|
{
|
||||||
|
/* Just update the inner digest */
|
||||||
|
sha384_update(&ctx->ictx, buf, buflen);
|
||||||
|
}
|
||||||
|
|
||||||
|
byte *sha384_hmac_final(struct sha384_hmac_context *ctx)
|
||||||
|
{
|
||||||
|
/* Finish the inner digest */
|
||||||
|
byte *isha = sha384_final(&ctx->ictx);
|
||||||
|
|
||||||
|
/* Finish the outer digest */
|
||||||
|
sha384_update(&ctx->octx, isha, SHA384_SIZE);
|
||||||
|
return sha384_final(&ctx->octx);
|
||||||
|
}
|
73
lib/sha512.h
Normal file
73
lib/sha512.h
Normal file
@ -0,0 +1,73 @@
|
|||||||
|
/*
|
||||||
|
* BIRD Library -- SHA-512 and SHA-384 Hash Functions,
|
||||||
|
* HMAC-SHA-512 and HMAC-SHA-384 Functions
|
||||||
|
*
|
||||||
|
* (c) 2015 CZ.NIC z.s.p.o.
|
||||||
|
*
|
||||||
|
* Based on the code from libgcrypt-1.6.0, which is
|
||||||
|
* (c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc.
|
||||||
|
*
|
||||||
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _BIRD_SHA512_H_
|
||||||
|
#define _BIRD_SHA512_H_
|
||||||
|
|
||||||
|
#include "lib/sha256.h"
|
||||||
|
|
||||||
|
#define SHA384_SIZE 48
|
||||||
|
#define SHA384_HEX_SIZE 97
|
||||||
|
#define SHA384_BLOCK_SIZE 128
|
||||||
|
|
||||||
|
#define SHA512_SIZE 64
|
||||||
|
#define SHA512_HEX_SIZE 129
|
||||||
|
#define SHA512_BLOCK_SIZE 128
|
||||||
|
|
||||||
|
struct sha512_state
|
||||||
|
{
|
||||||
|
u64 h0, h1, h2, h3, h4, h5, h6, h7;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct sha512_context
|
||||||
|
{
|
||||||
|
struct sha256_context bctx;
|
||||||
|
struct sha512_state state;
|
||||||
|
};
|
||||||
|
#define sha384_context sha512_context /* aliasing 'struct sha384_context' to 'struct sha512_context' */
|
||||||
|
|
||||||
|
|
||||||
|
void sha512_init(struct sha512_context *ctx);
|
||||||
|
void sha384_init(struct sha384_context *ctx);
|
||||||
|
|
||||||
|
void sha512_update(struct sha512_context *ctx, const byte *in_buf, size_t in_len);
|
||||||
|
static inline void sha384_update(struct sha384_context *ctx, const byte *in_buf, size_t in_len)
|
||||||
|
{
|
||||||
|
sha512_update(ctx, in_buf, in_len);
|
||||||
|
}
|
||||||
|
|
||||||
|
byte* sha512_final(struct sha512_context *ctx);
|
||||||
|
static inline byte* sha384_final(struct sha384_context *ctx)
|
||||||
|
{
|
||||||
|
return sha512_final(ctx);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* HMAC-SHA512, HMAC-SHA384
|
||||||
|
*/
|
||||||
|
struct sha512_hmac_context
|
||||||
|
{
|
||||||
|
struct sha512_context ictx;
|
||||||
|
struct sha512_context octx;
|
||||||
|
} ;
|
||||||
|
#define sha384_hmac_context sha512_hmac_context /* aliasing 'struct sha384_hmac_context' to 'struct sha384_hmac_context' */
|
||||||
|
|
||||||
|
void sha512_hmac_init(struct sha512_hmac_context *ctx, const byte *key, size_t keylen);
|
||||||
|
void sha384_hmac_init(struct sha384_hmac_context *ctx, const byte *key, size_t keylen);
|
||||||
|
|
||||||
|
void sha512_hmac_update(struct sha512_hmac_context *ctx, const byte *buf, size_t buflen);
|
||||||
|
void sha384_hmac_update(struct sha384_hmac_context *ctx, const byte *buf, size_t buflen);
|
||||||
|
|
||||||
|
byte *sha512_hmac_final(struct sha512_hmac_context *ctx);
|
||||||
|
byte *sha384_hmac_final(struct sha384_hmac_context *ctx);
|
||||||
|
|
||||||
|
#endif /* _BIRD_SHA512_H_ */
|
@ -35,6 +35,15 @@ get_u32(void *p)
|
|||||||
return ntohl(x);
|
return ntohl(x);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static inline u64
|
||||||
|
get_u64(const void *p)
|
||||||
|
{
|
||||||
|
u32 xh, xl;
|
||||||
|
memcpy(&xh, p, 4);
|
||||||
|
memcpy(&xl, p+4, 4);
|
||||||
|
return (((u64) ntohl(xh)) << 32) | ntohl(xl);
|
||||||
|
}
|
||||||
|
|
||||||
static inline void
|
static inline void
|
||||||
put_u16(void *p, u16 x)
|
put_u16(void *p, u16 x)
|
||||||
{
|
{
|
||||||
@ -49,4 +58,14 @@ put_u32(void *p, u32 x)
|
|||||||
memcpy(p, &x, 4);
|
memcpy(p, &x, 4);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static inline void
|
||||||
|
put_u64(void *p, u64 x)
|
||||||
|
{
|
||||||
|
u32 xh, xl;
|
||||||
|
xh = htonl(x >> 32);
|
||||||
|
xl = htonl((u32) x);
|
||||||
|
memcpy(p, &xh, 4);
|
||||||
|
memcpy(p+4, &xl, 4);
|
||||||
|
}
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
Loading…
Reference in New Issue
Block a user