diff options
Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna64.h')
-rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna64.h | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna64.h b/external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna64.h deleted file mode 100644 index 8b5c764b..00000000 --- a/external_libs/python/pyzmq-14.7.0/bundled/libsodium/src/libsodium/crypto_onetimeauth/poly1305/donna/poly1305_donna64.h +++ /dev/null @@ -1,202 +0,0 @@ -/* - poly1305 implementation using 64 bit * 64 bit = 128 bit multiplication and 128 bit addition -*/ - -#define POLY1305_IMPLEMENTATION_NAME "donna64" - -#if defined(__SIZEOF_INT128__) -typedef unsigned __int128 uint128_t; -#else -typedef unsigned uint128_t __attribute__((mode(TI))); -#endif - -#define MUL(out, x, y) out = ((uint128_t)x * y) -#define ADD(out, in) out += in -#define ADDLO(out, in) out += in -#define SHR(in, shift) (unsigned long long)(in >> (shift)) -#define LO(in) (unsigned long long)(in) - -#define POLY1305_NOINLINE __attribute__((noinline)) - -#define poly1305_block_size 16 - -/* 17 + sizeof(unsigned long long) + 8*sizeof(unsigned long long) */ -typedef struct poly1305_state_internal_t { - unsigned long long r[3]; - unsigned long long h[3]; - unsigned long long pad[2]; - unsigned long long leftover; - unsigned char buffer[poly1305_block_size]; - unsigned char final; -} poly1305_state_internal_t; - -/* interpret eight 8 bit unsigned integers as a 64 bit unsigned integer in little endian */ -static unsigned long long -U8TO64(const unsigned char *p) { - return - (((unsigned long long)(p[0] & 0xff) ) | - ((unsigned long long)(p[1] & 0xff) << 8) | - ((unsigned long long)(p[2] & 0xff) << 16) | - ((unsigned long long)(p[3] & 0xff) << 24) | - ((unsigned long long)(p[4] & 0xff) << 32) | - ((unsigned long long)(p[5] & 0xff) << 40) | - ((unsigned long long)(p[6] & 0xff) << 48) | - ((unsigned long long)(p[7] & 0xff) << 56)); -} - -/* store a 64 bit unsigned integer as eight 8 bit unsigned integers in little endian */ -static void -U64TO8(unsigned char *p, unsigned long long v) { - p[0] = (v ) & 0xff; - p[1] = (v >> 8) & 0xff; - p[2] = (v >> 16) & 0xff; - p[3] = (v >> 24) & 0xff; - p[4] = (v >> 32) & 0xff; - p[5] = (v >> 40) & 0xff; - p[6] = (v >> 48) & 0xff; - p[7] = (v >> 56) & 0xff; -} - -static void -poly1305_init(poly1305_context *ctx, const unsigned char key[32]) { - poly1305_state_internal_t *st = (poly1305_state_internal_t *)(void *)ctx; - unsigned long long t0,t1; - - /* r &= 0xffffffc0ffffffc0ffffffc0fffffff */ - t0 = U8TO64(&key[0]); - t1 = U8TO64(&key[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[16]); - st->pad[1] = U8TO64(&key[24]); - - st->leftover = 0; - st->final = 0; -} - -static void -poly1305_blocks(poly1305_state_internal_t *st, const unsigned char *m, unsigned long long bytes) { - const unsigned long long hibit = (st->final) ? 0 : ((unsigned long long)1 << 40); /* 1 << 128 */ - unsigned long long r0,r1,r2; - unsigned long long s1,s2; - unsigned long long h0,h1,h2; - unsigned long long c; - uint128_t d0,d1,d2,d; - - r0 = st->r[0]; - r1 = st->r[1]; - r2 = st->r[2]; - - h0 = st->h[0]; - h1 = st->h[1]; - h2 = st->h[2]; - - s1 = r1 * (5 << 2); - s2 = r2 * (5 << 2); - - while (bytes >= poly1305_block_size) { - unsigned long long t0,t1; - - /* h += m[i] */ - t0 = U8TO64(&m[0]); - t1 = U8TO64(&m[8]); - - h0 += (( t0 ) & 0xfffffffffff); - h1 += (((t0 >> 44) | (t1 << 20)) & 0xfffffffffff); - h2 += (((t1 >> 24) ) & 0x3ffffffffff) | hibit; - - /* h *= r */ - MUL(d0, h0, r0); MUL(d, h1, s2); ADD(d0, d); MUL(d, h2, s1); ADD(d0, d); - MUL(d1, h0, r1); MUL(d, h1, r0); ADD(d1, d); MUL(d, h2, s2); ADD(d1, d); - MUL(d2, h0, r2); MUL(d, h1, r1); ADD(d2, d); MUL(d, h2, r0); ADD(d2, d); - - /* (partial) h %= p */ - c = SHR(d0, 44); h0 = LO(d0) & 0xfffffffffff; - ADDLO(d1, c); c = SHR(d1, 44); h1 = LO(d1) & 0xfffffffffff; - ADDLO(d2, c); c = SHR(d2, 42); h2 = LO(d2) & 0x3ffffffffff; - h0 += c * 5; c = (h0 >> 44); h0 = h0 & 0xfffffffffff; - h1 += c; - - m += poly1305_block_size; - bytes -= poly1305_block_size; - } - - st->h[0] = h0; - st->h[1] = h1; - st->h[2] = h2; -} - - -static POLY1305_NOINLINE void -poly1305_finish(poly1305_context *ctx, unsigned char mac[16]) { - poly1305_state_internal_t *st = (poly1305_state_internal_t *)(void *)ctx; - unsigned long long h0,h1,h2,c; - unsigned long long g0,g1,g2; - unsigned long long t0,t1; - - /* process the remaining block */ - if (st->leftover) { - unsigned long long i = st->leftover; - st->buffer[i] = 1; - for (i = i + 1; 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]; - - 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 - ((unsigned long long)1 << 42); - - /* select h if h < p, or h + -p if h >= p */ - c = (g2 >> ((sizeof(unsigned long long) * 8) - 1)) - 1; - g0 &= c; - g1 &= c; - g2 &= c; - c = ~c; - h0 = (h0 & c) | g0; - h1 = (h1 & c) | g1; - h2 = (h2 & c) | g2; - - /* 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 */ - sodium_memzero((void *)st, sizeof *st); -} - |