Use optimized version of poly1305.

1 files changed, 0 insertions, 219 deletions

diff --git a/src/libcryptobox/poly1305/poly1305-donna-32.h b/src/libcryptobox/poly1305/poly1305-donna-32.h
deleted file mode 100644
index c45aab33a..000000000
--- a/src/libcryptobox/poly1305/poly1305-donna-32.h
+++ /dev/null
@@ -1,219 +0,0 @@
-/*
-	poly1305 implementation using 32 bit * 32 bit = 64 bit multiplication and 64 bit addition
-*/
-
-#if defined(_MSC_VER)
-	#define POLY1305_NOINLINE __declspec(noinline)
-#elif defined(__GNUC__)
-	#define POLY1305_NOINLINE __attribute__((noinline))
-#else
-	#define POLY1305_NOINLINE
-#endif
-
-#define poly1305_block_size 16
-
-/* 17 + sizeof(size_t) + 14*sizeof(unsigned long) */
-typedef struct poly1305_state_internal_t {
-	unsigned long r[5];
-	unsigned long h[5];
-	unsigned long pad[4];
-	size_t leftover;
-	unsigned char buffer[poly1305_block_size];
-	unsigned char final;
-} poly1305_state_internal_t;
-
-/* interpret four 8 bit unsigned integers as a 32 bit unsigned integer in little endian */
-static unsigned long
-U8TO32(const unsigned char *p) {
-	return
-		(((unsigned long)(p[0] & 0xff)      ) |
-	     ((unsigned long)(p[1] & 0xff) <<  8) |
-         ((unsigned long)(p[2] & 0xff) << 16) |
-         ((unsigned long)(p[3] & 0xff) << 24));
-}
-
-/* store a 32 bit unsigned integer as four 8 bit unsigned integers in little endian */
-static void
-U32TO8(unsigned char *p, unsigned long v) {
-	p[0] = (v      ) & 0xff;
-	p[1] = (v >>  8) & 0xff;
-	p[2] = (v >> 16) & 0xff;
-	p[3] = (v >> 24) & 0xff;
-}
-
-void
-poly1305_init(poly1305_context *ctx, const unsigned char key[32]) {
-	poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;
-
-	/* r &= 0xffffffc0ffffffc0ffffffc0fffffff */
-	st->r[0] = (U8TO32(&key[ 0])     ) & 0x3ffffff;
-	st->r[1] = (U8TO32(&key[ 3]) >> 2) & 0x3ffff03;
-	st->r[2] = (U8TO32(&key[ 6]) >> 4) & 0x3ffc0ff;
-	st->r[3] = (U8TO32(&key[ 9]) >> 6) & 0x3f03fff;
-	st->r[4] = (U8TO32(&key[12]) >> 8) & 0x00fffff;
-
-	/* h = 0 */
-	st->h[0] = 0;
-	st->h[1] = 0;
-	st->h[2] = 0;
-	st->h[3] = 0;
-	st->h[4] = 0;
-
-	/* save pad for later */
-	st->pad[0] = U8TO32(&key[16]);
-	st->pad[1] = U8TO32(&key[20]);
-	st->pad[2] = U8TO32(&key[24]);
-	st->pad[3] = U8TO32(&key[28]);
-
-	st->leftover = 0;
-	st->final = 0;
-}
-
-static void
-poly1305_blocks(poly1305_state_internal_t *st, const unsigned char *m, size_t bytes) {
-	const unsigned long hibit = (st->final) ? 0 : (1 << 24); /* 1 << 128 */
-	unsigned long r0,r1,r2,r3,r4;
-	unsigned long s1,s2,s3,s4;
-	unsigned long h0,h1,h2,h3,h4;
-	unsigned long long d0,d1,d2,d3,d4;
-	unsigned long c;
-
-	r0 = st->r[0];
-	r1 = st->r[1];
-	r2 = st->r[2];
-	r3 = st->r[3];
-	r4 = st->r[4];
-
-	s1 = r1 * 5;
-	s2 = r2 * 5;
-	s3 = r3 * 5;
-	s4 = r4 * 5;
-
-	h0 = st->h[0];
-	h1 = st->h[1];
-	h2 = st->h[2];
-	h3 = st->h[3];
-	h4 = st->h[4];
-
-	while (bytes >= poly1305_block_size) {
-		/* h += m[i] */
-		h0 += (U8TO32(m+ 0)     ) & 0x3ffffff;
-		h1 += (U8TO32(m+ 3) >> 2) & 0x3ffffff;
-		h2 += (U8TO32(m+ 6) >> 4) & 0x3ffffff;
-		h3 += (U8TO32(m+ 9) >> 6) & 0x3ffffff;
-		h4 += (U8TO32(m+12) >> 8) | hibit;
-
-		/* h *= r */
-		d0 = ((unsigned long long)h0 * r0) + ((unsigned long long)h1 * s4) + ((unsigned long long)h2 * s3) + ((unsigned long long)h3 * s2) + ((unsigned long long)h4 * s1);
-		d1 = ((unsigned long long)h0 * r1) + ((unsigned long long)h1 * r0) + ((unsigned long long)h2 * s4) + ((unsigned long long)h3 * s3) + ((unsigned long long)h4 * s2);
-		d2 = ((unsigned long long)h0 * r2) + ((unsigned long long)h1 * r1) + ((unsigned long long)h2 * r0) + ((unsigned long long)h3 * s4) + ((unsigned long long)h4 * s3);
-		d3 = ((unsigned long long)h0 * r3) + ((unsigned long long)h1 * r2) + ((unsigned long long)h2 * r1) + ((unsigned long long)h3 * r0) + ((unsigned long long)h4 * s4);
-		d4 = ((unsigned long long)h0 * r4) + ((unsigned long long)h1 * r3) + ((unsigned long long)h2 * r2) + ((unsigned long long)h3 * r1) + ((unsigned long long)h4 * r0);
-
-		/* (partial) h %= p */
-		              c = (unsigned long)(d0 >> 26); h0 = (unsigned long)d0 & 0x3ffffff;
-		d1 += c;      c = (unsigned long)(d1 >> 26); h1 = (unsigned long)d1 & 0x3ffffff;
-		d2 += c;      c = (unsigned long)(d2 >> 26); h2 = (unsigned long)d2 & 0x3ffffff;
-		d3 += c;      c = (unsigned long)(d3 >> 26); h3 = (unsigned long)d3 & 0x3ffffff;
-		d4 += c;      c = (unsigned long)(d4 >> 26); h4 = (unsigned long)d4 & 0x3ffffff;
-		h0 += c * 5;  c =                (h0 >> 26); h0 =                h0 & 0x3ffffff;
-		h1 += c;
-
-		m += poly1305_block_size;
-		bytes -= poly1305_block_size;
-	}
-
-	st->h[0] = h0;
-	st->h[1] = h1;
-	st->h[2] = h2;
-	st->h[3] = h3;
-	st->h[4] = h4;
-}
-
-POLY1305_NOINLINE void
-poly1305_finish(poly1305_context *ctx, unsigned char mac[16]) {
-	poly1305_state_internal_t *st = (poly1305_state_internal_t *)ctx;
-	unsigned long h0,h1,h2,h3,h4,c;
-	unsigned long g0,g1,g2,g3,g4;
-	unsigned long long f;
-	unsigned long mask;
-
-	/* process the remaining block */
-	if (st->leftover) {
-		size_t i = st->leftover;
-		st->buffer[i++] = 1;
-		for (; i < poly1305_block_size; i++)
-			st->buffer[i] = 0;
-		st->final = 1;
-		poly1305_blocks(st, st->buffer, poly1305_block_size);
-	}
-
-	/* fully carry h */
-	h0 = st->h[0];
-	h1 = st->h[1];
-	h2 = st->h[2];
-	h3 = st->h[3];
-	h4 = st->h[4];
-
-	             c = h1 >> 26; h1 = h1 & 0x3ffffff;
-	h2 +=     c; c = h2 >> 26; h2 = h2 & 0x3ffffff;
-	h3 +=     c; c = h3 >> 26; h3 = h3 & 0x3ffffff;
-	h4 +=     c; c = h4 >> 26; h4 = h4 & 0x3ffffff;
-	h0 += c * 5; c = h0 >> 26; h0 = h0 & 0x3ffffff;
-	h1 +=     c;
-
-	/* compute h + -p */
-	g0 = h0 + 5; c = g0 >> 26; g0 &= 0x3ffffff;
-	g1 = h1 + c; c = g1 >> 26; g1 &= 0x3ffffff;
-	g2 = h2 + c; c = g2 >> 26; g2 &= 0x3ffffff;
-	g3 = h3 + c; c = g3 >> 26; g3 &= 0x3ffffff;
-	g4 = h4 + c - (1 << 26);
-
-	/* select h if h < p, or h + -p if h >= p */
-	mask = (g4 >> ((sizeof(unsigned long) * 8) - 1)) - 1;
-	g0 &= mask;
-	g1 &= mask;
-	g2 &= mask;
-	g3 &= mask;
-	g4 &= mask;
-	mask = ~mask;
-	h0 = (h0 & mask) | g0;
-	h1 = (h1 & mask) | g1;
-	h2 = (h2 & mask) | g2;
-	h3 = (h3 & mask) | g3;
-	h4 = (h4 & mask) | g4;
-
-	/* h = h % (2^128) */
-	h0 = ((h0      ) | (h1 << 26)) & 0xffffffff;
-	h1 = ((h1 >>  6) | (h2 << 20)) & 0xffffffff;
-	h2 = ((h2 >> 12) | (h3 << 14)) & 0xffffffff;
-	h3 = ((h3 >> 18) | (h4 <<  8)) & 0xffffffff;
-
-	/* mac = (h + pad) % (2^128) */
-	f = (unsigned long long)h0 + st->pad[0]            ; h0 = (unsigned long)f;
-	f = (unsigned long long)h1 + st->pad[1] + (f >> 32); h1 = (unsigned long)f;
-	f = (unsigned long long)h2 + st->pad[2] + (f >> 32); h2 = (unsigned long)f;
-	f = (unsigned long long)h3 + st->pad[3] + (f >> 32); h3 = (unsigned long)f;
-
-	U32TO8(mac +  0, h0);
-	U32TO8(mac +  4, h1);
-	U32TO8(mac +  8, h2);
-	U32TO8(mac + 12, h3);
-
-	/* zero out the state */
-	st->h[0] = 0;
-	st->h[1] = 0;
-	st->h[2] = 0;
-	st->h[3] = 0;
-	st->h[4] = 0;
-	st->r[0] = 0;
-	st->r[1] = 0;
-	st->r[2] = 0;
-	st->r[3] = 0;
-	st->r[4] = 0;
-	st->pad[0] = 0;
-	st->pad[1] = 0;
-	st->pad[2] = 0;
-	st->pad[3] = 0;
-}
-