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-rw-r--r--src/Makefile.am2
-rw-r--r--src/crypto/poly1305.cpp141
-rw-r--r--src/crypto/poly1305.h17
-rw-r--r--src/test/crypto_tests.cpp82
4 files changed, 242 insertions, 0 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 2e297d3dac..b2e13fb6cb 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -344,6 +344,8 @@ crypto_libbitcoin_crypto_base_a_SOURCES = \
crypto/hmac_sha256.h \
crypto/hmac_sha512.cpp \
crypto/hmac_sha512.h \
+ crypto/poly1305.h \
+ crypto/poly1305.cpp \
crypto/ripemd160.cpp \
crypto/ripemd160.h \
crypto/sha1.cpp \
diff --git a/src/crypto/poly1305.cpp b/src/crypto/poly1305.cpp
new file mode 100644
index 0000000000..8a86c9601c
--- /dev/null
+++ b/src/crypto/poly1305.cpp
@@ -0,0 +1,141 @@
+// Copyright (c) 2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+// Based on the public domain implementation by Andrew Moon
+// poly1305-donna-unrolled.c from https://github.com/floodyberry/poly1305-donna
+
+#include <crypto/common.h>
+#include <crypto/poly1305.h>
+
+#include <string.h>
+
+#define mul32x32_64(a,b) ((uint64_t)(a) * (b))
+
+void poly1305_auth(unsigned char out[POLY1305_TAGLEN], const unsigned char *m, size_t inlen, const unsigned char key[POLY1305_KEYLEN]) {
+ uint32_t t0,t1,t2,t3;
+ uint32_t h0,h1,h2,h3,h4;
+ uint32_t r0,r1,r2,r3,r4;
+ uint32_t s1,s2,s3,s4;
+ uint32_t b, nb;
+ size_t j;
+ uint64_t t[5];
+ uint64_t f0,f1,f2,f3;
+ uint64_t g0,g1,g2,g3,g4;
+ uint64_t c;
+ unsigned char mp[16];
+
+ /* clamp key */
+ t0 = ReadLE32(key+0);
+ t1 = ReadLE32(key+4);
+ t2 = ReadLE32(key+8);
+ t3 = ReadLE32(key+12);
+
+ /* precompute multipliers */
+ r0 = t0 & 0x3ffffff; t0 >>= 26; t0 |= t1 << 6;
+ r1 = t0 & 0x3ffff03; t1 >>= 20; t1 |= t2 << 12;
+ r2 = t1 & 0x3ffc0ff; t2 >>= 14; t2 |= t3 << 18;
+ r3 = t2 & 0x3f03fff; t3 >>= 8;
+ r4 = t3 & 0x00fffff;
+
+ s1 = r1 * 5;
+ s2 = r2 * 5;
+ s3 = r3 * 5;
+ s4 = r4 * 5;
+
+ /* init state */
+ h0 = 0;
+ h1 = 0;
+ h2 = 0;
+ h3 = 0;
+ h4 = 0;
+
+ /* full blocks */
+ if (inlen < 16) goto poly1305_donna_atmost15bytes;
+poly1305_donna_16bytes:
+ m += 16;
+ inlen -= 16;
+
+ t0 = ReadLE32(m-16);
+ t1 = ReadLE32(m-12);
+ t2 = ReadLE32(m-8);
+ t3 = ReadLE32(m-4);
+
+ h0 += t0 & 0x3ffffff;
+ h1 += ((((uint64_t)t1 << 32) | t0) >> 26) & 0x3ffffff;
+ h2 += ((((uint64_t)t2 << 32) | t1) >> 20) & 0x3ffffff;
+ h3 += ((((uint64_t)t3 << 32) | t2) >> 14) & 0x3ffffff;
+ h4 += (t3 >> 8) | (1 << 24);
+
+
+poly1305_donna_mul:
+ t[0] = mul32x32_64(h0,r0) + mul32x32_64(h1,s4) + mul32x32_64(h2,s3) + mul32x32_64(h3,s2) + mul32x32_64(h4,s1);
+ t[1] = mul32x32_64(h0,r1) + mul32x32_64(h1,r0) + mul32x32_64(h2,s4) + mul32x32_64(h3,s3) + mul32x32_64(h4,s2);
+ t[2] = mul32x32_64(h0,r2) + mul32x32_64(h1,r1) + mul32x32_64(h2,r0) + mul32x32_64(h3,s4) + mul32x32_64(h4,s3);
+ t[3] = mul32x32_64(h0,r3) + mul32x32_64(h1,r2) + mul32x32_64(h2,r1) + mul32x32_64(h3,r0) + mul32x32_64(h4,s4);
+ t[4] = mul32x32_64(h0,r4) + mul32x32_64(h1,r3) + mul32x32_64(h2,r2) + mul32x32_64(h3,r1) + mul32x32_64(h4,r0);
+
+ h0 = (uint32_t)t[0] & 0x3ffffff; c = (t[0] >> 26);
+ t[1] += c; h1 = (uint32_t)t[1] & 0x3ffffff; b = (uint32_t)(t[1] >> 26);
+ t[2] += b; h2 = (uint32_t)t[2] & 0x3ffffff; b = (uint32_t)(t[2] >> 26);
+ t[3] += b; h3 = (uint32_t)t[3] & 0x3ffffff; b = (uint32_t)(t[3] >> 26);
+ t[4] += b; h4 = (uint32_t)t[4] & 0x3ffffff; b = (uint32_t)(t[4] >> 26);
+ h0 += b * 5;
+
+ if (inlen >= 16) goto poly1305_donna_16bytes;
+
+ /* final bytes */
+poly1305_donna_atmost15bytes:
+ if (!inlen) goto poly1305_donna_finish;
+
+ for (j = 0; j < inlen; j++) mp[j] = m[j];
+ mp[j++] = 1;
+ for (; j < 16; j++) mp[j] = 0;
+ inlen = 0;
+
+ t0 = ReadLE32(mp+0);
+ t1 = ReadLE32(mp+4);
+ t2 = ReadLE32(mp+8);
+ t3 = ReadLE32(mp+12);
+
+ h0 += t0 & 0x3ffffff;
+ h1 += ((((uint64_t)t1 << 32) | t0) >> 26) & 0x3ffffff;
+ h2 += ((((uint64_t)t2 << 32) | t1) >> 20) & 0x3ffffff;
+ h3 += ((((uint64_t)t3 << 32) | t2) >> 14) & 0x3ffffff;
+ h4 += (t3 >> 8);
+
+ goto poly1305_donna_mul;
+
+poly1305_donna_finish:
+ b = h0 >> 26; h0 = h0 & 0x3ffffff;
+ h1 += b; b = h1 >> 26; h1 = h1 & 0x3ffffff;
+ h2 += b; b = h2 >> 26; h2 = h2 & 0x3ffffff;
+ h3 += b; b = h3 >> 26; h3 = h3 & 0x3ffffff;
+ h4 += b; b = h4 >> 26; h4 = h4 & 0x3ffffff;
+ h0 += b * 5; b = h0 >> 26; h0 = h0 & 0x3ffffff;
+ h1 += b;
+
+ g0 = h0 + 5; b = g0 >> 26; g0 &= 0x3ffffff;
+ g1 = h1 + b; b = g1 >> 26; g1 &= 0x3ffffff;
+ g2 = h2 + b; b = g2 >> 26; g2 &= 0x3ffffff;
+ g3 = h3 + b; b = g3 >> 26; g3 &= 0x3ffffff;
+ g4 = h4 + b - (1 << 26);
+
+ b = (g4 >> 31) - 1;
+ nb = ~b;
+ h0 = (h0 & nb) | (g0 & b);
+ h1 = (h1 & nb) | (g1 & b);
+ h2 = (h2 & nb) | (g2 & b);
+ h3 = (h3 & nb) | (g3 & b);
+ h4 = (h4 & nb) | (g4 & b);
+
+ f0 = ((h0 ) | (h1 << 26)) + (uint64_t)ReadLE32(&key[16]);
+ f1 = ((h1 >> 6) | (h2 << 20)) + (uint64_t)ReadLE32(&key[20]);
+ f2 = ((h2 >> 12) | (h3 << 14)) + (uint64_t)ReadLE32(&key[24]);
+ f3 = ((h3 >> 18) | (h4 << 8)) + (uint64_t)ReadLE32(&key[28]);
+
+ WriteLE32(&out[ 0], f0); f1 += (f0 >> 32);
+ WriteLE32(&out[ 4], f1); f2 += (f1 >> 32);
+ WriteLE32(&out[ 8], f2); f3 += (f2 >> 32);
+ WriteLE32(&out[12], f3);
+}
diff --git a/src/crypto/poly1305.h b/src/crypto/poly1305.h
new file mode 100644
index 0000000000..1598b013b9
--- /dev/null
+++ b/src/crypto/poly1305.h
@@ -0,0 +1,17 @@
+// Copyright (c) 2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_CRYPTO_POLY1305_H
+#define BITCOIN_CRYPTO_POLY1305_H
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#define POLY1305_KEYLEN 32
+#define POLY1305_TAGLEN 16
+
+void poly1305_auth(unsigned char out[POLY1305_TAGLEN], const unsigned char *m, size_t inlen,
+ const unsigned char key[POLY1305_KEYLEN]);
+
+#endif // BITCOIN_CRYPTO_POLY1305_H
diff --git a/src/test/crypto_tests.cpp b/src/test/crypto_tests.cpp
index 86cb00a78f..352cff37d1 100644
--- a/src/test/crypto_tests.cpp
+++ b/src/test/crypto_tests.cpp
@@ -4,6 +4,7 @@
#include <crypto/aes.h>
#include <crypto/chacha20.h>
+#include <crypto/poly1305.h>
#include <crypto/ripemd160.h>
#include <crypto/sha1.h>
#include <crypto/sha256.h>
@@ -200,6 +201,17 @@ static void TestChaCha20(const std::string &hexkey, uint64_t nonce, uint64_t see
BOOST_CHECK(out == outres);
}
+static void TestPoly1305(const std::string &hexmessage, const std::string &hexkey, const std::string& hextag)
+{
+ std::vector<unsigned char> key = ParseHex(hexkey);
+ std::vector<unsigned char> m = ParseHex(hexmessage);
+ std::vector<unsigned char> tag = ParseHex(hextag);
+ std::vector<unsigned char> tagres;
+ tagres.resize(POLY1305_TAGLEN);
+ poly1305_auth(tagres.data(), m.data(), m.size(), key.data());
+ BOOST_CHECK(tag == tagres);
+}
+
static std::string LongTestString() {
std::string ret;
for (int i=0; i<200000; i++) {
@@ -524,6 +536,76 @@ BOOST_AUTO_TEST_CASE(chacha20_testvector)
"fab78c9");
}
+BOOST_AUTO_TEST_CASE(poly1305_testvector)
+{
+ // RFC 7539, section 2.5.2.
+ TestPoly1305("43727970746f6772617068696320466f72756d2052657365617263682047726f7570",
+ "85d6be7857556d337f4452fe42d506a80103808afb0db2fd4abff6af4149f51b",
+ "a8061dc1305136c6c22b8baf0c0127a9");
+
+ // RFC 7539, section A.3.
+ TestPoly1305("00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
+ "000000000000000000000000000",
+ "0000000000000000000000000000000000000000000000000000000000000000",
+ "00000000000000000000000000000000");
+
+ TestPoly1305("416e79207375626d697373696f6e20746f20746865204945544620696e74656e6465642062792074686520436f6e747269627"
+ "5746f7220666f72207075626c69636174696f6e20617320616c6c206f722070617274206f6620616e204945544620496e7465"
+ "726e65742d4472616674206f722052464320616e6420616e792073746174656d656e74206d6164652077697468696e2074686"
+ "520636f6e74657874206f6620616e204945544620616374697669747920697320636f6e7369646572656420616e2022494554"
+ "4620436f6e747269627574696f6e222e20537563682073746174656d656e747320696e636c756465206f72616c20737461746"
+ "56d656e747320696e20494554462073657373696f6e732c2061732077656c6c206173207772697474656e20616e6420656c65"
+ "6374726f6e696320636f6d6d756e69636174696f6e73206d61646520617420616e792074696d65206f7220706c6163652c207"
+ "768696368206172652061646472657373656420746f",
+ "0000000000000000000000000000000036e5f6b5c5e06070f0efca96227a863e",
+ "36e5f6b5c5e06070f0efca96227a863e");
+
+ TestPoly1305("416e79207375626d697373696f6e20746f20746865204945544620696e74656e6465642062792074686520436f6e747269627"
+ "5746f7220666f72207075626c69636174696f6e20617320616c6c206f722070617274206f6620616e204945544620496e7465"
+ "726e65742d4472616674206f722052464320616e6420616e792073746174656d656e74206d6164652077697468696e2074686"
+ "520636f6e74657874206f6620616e204945544620616374697669747920697320636f6e7369646572656420616e2022494554"
+ "4620436f6e747269627574696f6e222e20537563682073746174656d656e747320696e636c756465206f72616c20737461746"
+ "56d656e747320696e20494554462073657373696f6e732c2061732077656c6c206173207772697474656e20616e6420656c65"
+ "6374726f6e696320636f6d6d756e69636174696f6e73206d61646520617420616e792074696d65206f7220706c6163652c207"
+ "768696368206172652061646472657373656420746f",
+ "36e5f6b5c5e06070f0efca96227a863e00000000000000000000000000000000",
+ "f3477e7cd95417af89a6b8794c310cf0");
+
+ TestPoly1305("2754776173206272696c6c69672c20616e642074686520736c6974687920746f7665730a446964206779726520616e6420676"
+ "96d626c6520696e2074686520776162653a0a416c6c206d696d737920776572652074686520626f726f676f7665732c0a416e"
+ "6420746865206d6f6d65207261746873206f757467726162652e",
+ "1c9240a5eb55d38af333888604f6b5f0473917c1402b80099dca5cbc207075c0",
+ "4541669a7eaaee61e708dc7cbcc5eb62");
+
+ TestPoly1305("ffffffffffffffffffffffffffffffff",
+ "0200000000000000000000000000000000000000000000000000000000000000",
+ "03000000000000000000000000000000");
+
+ TestPoly1305("02000000000000000000000000000000",
+ "02000000000000000000000000000000ffffffffffffffffffffffffffffffff",
+ "03000000000000000000000000000000");
+
+ TestPoly1305("fffffffffffffffffffffffffffffffff0ffffffffffffffffffffffffffffff11000000000000000000000000000000",
+ "0100000000000000000000000000000000000000000000000000000000000000",
+ "05000000000000000000000000000000");
+
+ TestPoly1305("fffffffffffffffffffffffffffffffffbfefefefefefefefefefefefefefefe01010101010101010101010101010101",
+ "0100000000000000000000000000000000000000000000000000000000000000",
+ "00000000000000000000000000000000");
+
+ TestPoly1305("fdffffffffffffffffffffffffffffff",
+ "0200000000000000000000000000000000000000000000000000000000000000",
+ "faffffffffffffffffffffffffffffff");
+
+ TestPoly1305("e33594d7505e43b900000000000000003394d7505e4379cd01000000000000000000000000000000000000000000000001000000000000000000000000000000",
+ "0100000000000000040000000000000000000000000000000000000000000000",
+ "14000000000000005500000000000000");
+
+ TestPoly1305("e33594d7505e43b900000000000000003394d7505e4379cd010000000000000000000000000000000000000000000000",
+ "0100000000000000040000000000000000000000000000000000000000000000",
+ "13000000000000000000000000000000");
+}
+
BOOST_AUTO_TEST_CASE(countbits_tests)
{
FastRandomContext ctx;
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-10 07:16:04 +0000