1 files changed, 0 insertions, 213 deletions
diff --git a/src/libcryptobox/poly1305/ref-64.c b/src/libcryptobox/poly1305/ref-64.c
deleted file mode 100644
index cceb1476d..000000000
--- a/src/libcryptobox/poly1305/ref-64.c
+++ /dev/null
@@ -1,213 +0,0 @@
-/*
-	poly1305 implementation using 64 bit * 64 bit = 128 bit multiplication and 128 bit addition
-
-	assumes the existence of uint64_t and uint128_t
-*/
-
-#include "config.h"
-#include "poly1305.h"
-#include "poly1305_internal.h"
-
-#define POLY1305_BLOCK_SIZE 16
-
-typedef struct poly1305_state_ref_t {
-	uint64_t r[3];
-	uint64_t h[3];
-	uint64_t pad[2];
-	unsigned char final;
-} poly1305_state_ref_t;
-
-/* interpret eight 8 bit unsigned integers as a 64 bit unsigned integer in little endian */
-static uint64_t
-U8TO64(const unsigned char *p) {
-	return
-		((uint64_t)p[0]      ) |
-		((uint64_t)p[1] <<  8) |
-		((uint64_t)p[2] << 16) |
-		((uint64_t)p[3] << 24) |
-		((uint64_t)p[4] << 32) |
-		((uint64_t)p[5] << 40) |
-		((uint64_t)p[6] << 48) |
-		((uint64_t)p[7] << 56);
-}
-
-/* store a 64 bit unsigned integer as eight 8 bit unsigned integers in little endian */
-static void
-U64TO8(unsigned char *p, uint64_t v) {
-	p[0] = (unsigned char)(v      ) & 0xff;
-	p[1] = (unsigned char)(v >>  8) & 0xff;
-	p[2] = (unsigned char)(v >> 16) & 0xff;
-	p[3] = (unsigned char)(v >> 24) & 0xff;
-	p[4] = (unsigned char)(v >> 32) & 0xff;
-	p[5] = (unsigned char)(v >> 40) & 0xff;
-	p[6] = (unsigned char)(v >> 48) & 0xff;
-	p[7] = (unsigned char)(v >> 56) & 0xff;
-}
-
-size_t
-poly1305_block_size_ref(void) {
-	return POLY1305_BLOCK_SIZE;
-}
-
-void
-poly1305_init_ext_ref(void *state, const poly1305_key *key, size_t bytes_hint) {
-	poly1305_state_ref_t *st = (poly1305_state_ref_t *)state;
-	uint64_t t0, t1;
-
-	/* bytes_hint not used */
-	(void)bytes_hint;
-
-	/* r &= 0xffffffc0ffffffc0ffffffc0fffffff */
-	t0 = U8TO64(&key->b[0]);
-	t1 = U8TO64(&key->b[8]);
-	st->r[0] = ( t0                    ) & 0xffc0fffffff;
-	st->r[1] = ((t0 >> 44) | (t1 << 20)) & 0xfffffc0ffff;
-	st->r[2] = ((t1 >> 24)             ) & 0x00ffffffc0f;
-
-	/* h = 0 */
-	st->h[0] = 0;
-	st->h[1] = 0;
-	st->h[2] = 0;
-
-	/* save pad for later */
-	st->pad[0] = U8TO64(&key->b[16]);
-	st->pad[1] = U8TO64(&key->b[24]);
-
-	st->final = 0;
-}
-
-void
-poly1305_blocks_ref(void *state, const unsigned char *in, size_t inlen) {
-	poly1305_state_ref_t *st = (poly1305_state_ref_t *)state;
-	const uint64_t hibit = (st->final) ? 0 : ((uint64_t)1 << 40); /* 1 << 128 */
-	uint64_t r0,r1,r2;
-	uint64_t s1,s2;
-	uint64_t h0,h1,h2;
-	uint64_t c;
-	uint128_t d0,d1,d2;
-
-	r0 = st->r[0];
-	r1 = st->r[1];
-	r2 = st->r[2];
-
-	s1 = r1 * (5 << 2);
-	s2 = r2 * (5 << 2);
-
-	h0 = st->h[0];
-	h1 = st->h[1];
-	h2 = st->h[2];
-
-	while (inlen >= POLY1305_BLOCK_SIZE) {
-		uint64_t t0, t1;
-
-		/* h += in[i] */
-		t0 = U8TO64(in + 0);
-		t1 = U8TO64(in + 8);
-		h0 += (( t0                    ) & 0xfffffffffff);
-		h1 += (((t0 >> 44) | (t1 << 20)) & 0xfffffffffff);
-		h2 += (((t1 >> 24)             ) & 0x3ffffffffff) | hibit;
-
-		/* h *= r */
-		d0 = ((uint128_t)h0 * r0) + ((uint128_t)h1 * s2) + ((uint128_t)h2 * s1);
-		d1 = ((uint128_t)h0 * r1) + ((uint128_t)h1 * r0) + ((uint128_t)h2 * s2);
-		d2 = ((uint128_t)h0 * r2) + ((uint128_t)h1 * r1) + ((uint128_t)h2 * r0);
-
-		/* (partial) h %= p */
-		              c = (uint64_t)(d0 >> 44); h0 = (uint64_t)d0 & 0xfffffffffff;
-		d1 += c;      c = (uint64_t)(d1 >> 44); h1 = (uint64_t)d1 & 0xfffffffffff;
-		d2 += c;      c = (uint64_t)(d2 >> 42); h2 = (uint64_t)d2 & 0x3ffffffffff;
-		h0 += c * 5;  c =           (h0 >> 44); h0 =           h0 & 0xfffffffffff;
-		h1 += c;
-
-		in += POLY1305_BLOCK_SIZE;
-		inlen -= POLY1305_BLOCK_SIZE;
-	}
-
-	st->h[0] = h0;
-	st->h[1] = h1;
-	st->h[2] = h2;
-}
-
-void
-poly1305_finish_ext_ref(void *state, const unsigned char *in, size_t remaining, unsigned char mac[16]) {
-	poly1305_state_ref_t *st = (poly1305_state_ref_t *)state;
-	uint64_t h0, h1, h2, c;
-	uint64_t g0, g1, g2;
-	uint64_t t0, t1;
-
-	/* process the remaining block */
-	if (remaining) {
-		unsigned char final[POLY1305_BLOCK_SIZE] = {0};
-		size_t i;
-		for (i = 0; i < remaining; i++)
-			final[i] = in[i];
-		final[remaining] = 1;
-		st->final = 1;
-		poly1305_blocks_ref(st, final, POLY1305_BLOCK_SIZE);
-	}
-
-	/* fully carry h */
-	h0 = st->h[0];
-	h1 = st->h[1];
-	h2 = st->h[2];
-
-	             c = (h1 >> 44); h1 &= 0xfffffffffff;
-	h2 += c;     c = (h2 >> 42); h2 &= 0x3ffffffffff;
-	h0 += c * 5; c = (h0 >> 44); h0 &= 0xfffffffffff;
-	h1 += c;     c = (h1 >> 44); h1 &= 0xfffffffffff;
-	h2 += c;     c = (h2 >> 42); h2 &= 0x3ffffffffff;
-	h0 += c * 5; c = (h0 >> 44); h0 &= 0xfffffffffff;
-	h1 += c;
-
-	/* compute h + -p */
-	g0 = h0 + 5; c = (g0 >> 44); g0 &= 0xfffffffffff;
-	g1 = h1 + c; c = (g1 >> 44); g1 &= 0xfffffffffff;
-	g2 = h2 + c - ((uint64_t)1 << 42);
-
-	/* select h if h < p, or h + -p if h >= p */
-	c = (g2 >> 63) - 1;
-	h0 = (h0 & ~c) | (g0 & c);
-	h1 = (h1 & ~c) | (g1 & c);
-	h2 = (h2 & ~c) | (g2 & c);
-
-	/* h = (h + pad) */
-	t0 = st->pad[0];
-	t1 = st->pad[1];
-
-	h0 += (( t0                    ) & 0xfffffffffff)    ; c = (h0 >> 44); h0 &= 0xfffffffffff;
-	h1 += (((t0 >> 44) | (t1 << 20)) & 0xfffffffffff) + c; c = (h1 >> 44); h1 &= 0xfffffffffff;
-	h2 += (((t1 >> 24)             ) & 0x3ffffffffff) + c;                 h2 &= 0x3ffffffffff;
-
-	/* mac = h % (2^128) */
-	h0 = ((h0      ) | (h1 << 44));
-	h1 = ((h1 >> 20) | (h2 << 24));
-
-	U64TO8(&mac[0], h0);
-	U64TO8(&mac[8], h1);
-
-	/* zero out the state */
-	st->h[0] = 0;
-	st->h[1] = 0;
-	st->h[2] = 0;
-	st->r[0] = 0;
-	st->r[1] = 0;
-	st->r[2] = 0;
-	st->pad[0] = 0;
-	st->pad[1] = 0;
-}
-
-
-void
-poly1305_auth_ref(unsigned char mac[16], const unsigned char *in, size_t inlen, const poly1305_key *key) {
-	poly1305_state_ref_t st;
-	size_t blocks;
-	poly1305_init_ext_ref(&st, key, inlen);
-	blocks = (inlen & ~(POLY1305_BLOCK_SIZE - 1));
-	if (blocks) {
-		poly1305_blocks_ref(&st, in, blocks);
-		in += blocks;
-		inlen -= blocks;
-	}
-	poly1305_finish_ext_ref(&st, in, inlen, mac);
-}
-