sha256 functions moved to the core

git-svn-id: http://svn.miranda-ng.org/main/trunk@15137 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

3 files changed, 297 insertions, 0 deletions

diff --git a/src/mir_core/src/mir_core.def b/src/mir_core/src/mir_core.def
index 6ec2a2e42e..83c787d57f 100644
--- a/src/mir_core/src/mir_core.def
+++ b/src/mir_core/src/mir_core.def
@@ -983,3 +983,7 @@ mir_wstrncmp @1140
 mir_wstrncmpi @1141

 strdel @1142

 strdelw @1143

+mir_sha256_final @1144

+mir_sha256_hash @1145

+mir_sha256_init @1146

+mir_sha256_write @1147

diff --git a/src/mir_core/src/mir_core64.def b/src/mir_core/src/mir_core64.def
index 07fe41af64..86b36cd57a 100644
--- a/src/mir_core/src/mir_core64.def
+++ b/src/mir_core/src/mir_core64.def
@@ -983,3 +983,7 @@ mir_wstrncmp @1140
 mir_wstrncmpi @1141

 strdel @1142

 strdelw @1143

+mir_sha256_final @1144

+mir_sha256_hash @1145

+mir_sha256_init @1146

+mir_sha256_write @1147

diff --git a/src/mir_core/src/sha256.cpp b/src/mir_core/src/sha256.cpp
new file mode 100644
index 0000000000..c6641479dd
--- /dev/null
+++ b/src/mir_core/src/sha256.cpp
@@ -0,0 +1,289 @@
+

+#include "stdafx.h"

+

+MIR_CORE_DLL(void) mir_sha256_init(SHA256_CONTEXT *hd)

+{

+	hd->h0 = 0x6a09e667;

+	hd->h1 = 0xbb67ae85;

+	hd->h2 = 0x3c6ef372;

+	hd->h3 = 0xa54ff53a;

+	hd->h4 = 0x510e527f;

+	hd->h5 = 0x9b05688c;

+	hd->h6 = 0x1f83d9ab;

+	hd->h7 = 0x5be0cd19;

+

+	hd->nblocks = 0;

+	hd->count = 0;

+}

+

+/*

+Transform the message X which consists of 16 32-bit-words. See FIPS

+180-2 for details.  */

+#define ror(x,n) ( ((x) >> (n)) | ((x) << (32-(n))) )

+#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)) + Cho((e), (f), (g)) + (k)+(w);  \

+	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;                                          \

+} while (0)

+

+/* (4.2) same as SHA-1's F1.  */

+static inline UINT32

+Cho(UINT32 x, UINT32 y, UINT32 z)

+{

+	return (z ^ (x & (y ^ z)));

+}

+

+/* (4.3) same as SHA-1's F3 */

+static inline UINT32

+Maj(UINT32 x, UINT32 y, UINT32 z)

+{

+	return ((x & y) | (z & (x | y)));

+}

+

+/* (4.4) */

+static inline UINT32 Sum0(UINT32 x)

+{

+	return (ror(x, 2) ^ ror(x, 13) ^ ror(x, 22));

+}

+

+/* (4.5) */

+static inline UINT32

+Sum1(UINT32 x)

+{

+	return (ror(x, 6) ^ ror(x, 11) ^ ror(x, 25));

+}

+

+

+static void transform(SHA256_CONTEXT *hd, const unsigned char *data)

+{

+	static const UINT32 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

+	};

+

+	UINT32 a, b, c, d, e, f, g, h, t1, t2;

+	UINT32 x[16];

+	UINT32 w[64];

+	int i;

+

+	a = hd->h0;

+	b = hd->h1;

+	c = hd->h2;

+	d = hd->h3;

+	e = hd->h4;

+	f = hd->h5;

+	g = hd->h6;

+	h = hd->h7;

+

+#ifdef WORDS_BIGENDIAN

+	memcpy(x, data, 64);

+#else

+	{

+		BYTE *p2;

+

+		for (i = 0, p2 = (BYTE*)x; i < 16; i++, p2 += 4) {

+			p2[3] = *data++;

+			p2[2] = *data++;

+			p2[1] = *data++;

+			p2[0] = *data++;

+		}

+	}

+#endif

+

+	for (i = 0; i < 16; i++)

+		w[i] = x[i];

+	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;) {

+#if 0

+		R(a, b, c, d, e, f, g, h, K[i], w[i]);

+		i++;

+#else

+		t1 = h + Sum1(e) + Cho(e, f, g) + K[i] + w[i];

+		t2 = Sum0(a) + Maj(a, b, c);

+		d += t1;

+		h = t1 + t2;

+

+		t1 = g + Sum1(d) + Cho(d, e, f) + K[i + 1] + w[i + 1];

+		t2 = Sum0(h) + Maj(h, a, b);

+		c += t1;

+		g = t1 + t2;

+

+		t1 = f + Sum1(c) + Cho(c, d, e) + K[i + 2] + w[i + 2];

+		t2 = Sum0(g) + Maj(g, h, a);

+		b += t1;

+		f = t1 + t2;

+

+		t1 = e + Sum1(b) + Cho(b, c, d) + K[i + 3] + w[i + 3];

+		t2 = Sum0(f) + Maj(f, g, h);

+		a += t1;

+		e = t1 + t2;

+

+		t1 = d + Sum1(a) + Cho(a, b, c) + K[i + 4] + w[i + 4];

+		t2 = Sum0(e) + Maj(e, f, g);

+		h += t1;

+		d = t1 + t2;

+

+		t1 = c + Sum1(h) + Cho(h, a, b) + K[i + 5] + w[i + 5];

+		t2 = Sum0(d) + Maj(d, e, f);

+		g += t1;

+		c = t1 + t2;

+

+		t1 = b + Sum1(g) + Cho(g, h, a) + K[i + 6] + w[i + 6];

+		t2 = Sum0(c) + Maj(c, d, e);

+		f += t1;

+		b = t1 + t2;

+

+		t1 = a + Sum1(f) + Cho(f, g, h) + K[i + 7] + w[i + 7];

+		t2 = Sum0(b) + Maj(b, c, d);

+		e += t1;

+		a = t1 + t2;

+

+		i += 8;

+#endif

+	}

+

+	hd->h0 += a;

+	hd->h1 += b;

+	hd->h2 += c;

+	hd->h3 += d;

+	hd->h4 += e;

+	hd->h5 += f;

+	hd->h6 += g;

+	hd->h7 += h;

+}

+#undef S0

+#undef S1

+#undef R

+

+

+/* Update the message digest with the contents of INBUF with length INLEN.  */

+MIR_CORE_DLL(void) mir_sha256_write(SHA256_CONTEXT *hd, const void *inbuf_arg, size_t inlen)

+{

+	const unsigned char *inbuf = (const unsigned char *)inbuf_arg;

+

+	if (hd->count == 64) { /* flush the buffer */

+		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++;

+		mir_sha256_write(hd, NULL, 0);

+		if (!inlen)

+			return;

+	}

+

+	while (inlen >= 64) {

+		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 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.  */

+

+MIR_CORE_DLL(void) mir_sha256_final(SHA256_CONTEXT *hd, BYTE hashout[MIR_SHA256_HASH_SIZE])

+{

+	UINT32 t, msb, lsb;

+

+	mir_sha256_write(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;

+		mir_sha256_write(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;

+	transform(hd, hd->buf);

+

+	BYTE *p = hashout;

+#ifdef WORDS_BIGENDIAN

+#define X(a) do { *(UINT32*)p = hd->h##a ; p += 4; } while(0)

+#else /* little endian */

+#define X(a) do { *p++ = hd->h##a >> 24; *p++ = hd->h##a >> 16;	 \

+	*p++ = hd->h##a >> 8; *p++ = hd->h##a; } while (0)

+#endif

+	X(0);

+	X(1);

+	X(2);

+	X(3);

+	X(4);

+	X(5);

+	X(6);

+	X(7);

+#undef X

+}

+

+MIR_CORE_DLL(void) mir_sha256_hash(const void *dataIn, size_t len, BYTE hashout[MIR_SHA256_HASH_SIZE])

+{

+	SHA256_CONTEXT tmp;

+	mir_sha256_init(&tmp);

+	mir_sha256_write(&tmp, dataIn, len);

+	mir_sha256_final(&tmp, hashout);

+}