const mem = @import("../mem.zig"); const math = @import("../math/index.zig"); const endian = @import("../endian.zig"); const debug = @import("../debug/index.zig"); const builtin = @import("builtin"); const htest = @import("test.zig"); pub const Sha3_224 = Keccak(224, 0x06); pub const Sha3_256 = Keccak(256, 0x06); pub const Sha3_384 = Keccak(384, 0x06); pub const Sha3_512 = Keccak(512, 0x06); fn Keccak(comptime bits: usize, comptime delim: u8) type { return struct { const Self = this; const block_size = 200; const digest_size = bits / 8; s: [200]u8, offset: usize, rate: usize, pub fn init() Self { var d: Self = undefined; d.reset(); return d; } pub fn reset(d: &Self) void { mem.set(u8, d.s[0..], 0); d.offset = 0; d.rate = 200 - (bits / 4); } pub fn hash(b: []const u8, out: []u8) void { var d = Self.init(); d.update(b); d.final(out); } pub fn update(d: &Self, b: []const u8) void { var ip: usize = 0; var len = b.len; var rate = d.rate - d.offset; var offset = d.offset; // absorb while (len >= rate) { for (d.s[offset .. offset + rate]) |*r, i| r.* ^= b[ip..][i]; keccak_f(1600, d.s[0..]); ip += rate; len -= rate; rate = d.rate; offset = 0; } for (d.s[offset .. offset + len]) |*r, i| r.* ^= b[ip..][i]; d.offset = offset + len; } pub fn final(d: &Self, out: []u8) void { // padding d.s[d.offset] ^= delim; d.s[d.rate - 1] ^= 0x80; keccak_f(1600, d.s[0..]); // squeeze var op: usize = 0; var len: usize = bits / 8; while (len >= d.rate) { mem.copy(u8, out[op..], d.s[0..d.rate]); keccak_f(1600, d.s[0..]); op += d.rate; len -= d.rate; } mem.copy(u8, out[op..], d.s[0..len]); } }; } const RC = []const u64{ 0x0000000000000001, 0x0000000000008082, 0x800000000000808a, 0x8000000080008000, 0x000000000000808b, 0x0000000080000001, 0x8000000080008081, 0x8000000000008009, 0x000000000000008a, 0x0000000000000088, 0x0000000080008009, 0x000000008000000a, 0x000000008000808b, 0x800000000000008b, 0x8000000000008089, 0x8000000000008003, 0x8000000000008002, 0x8000000000000080, 0x000000000000800a, 0x800000008000000a, 0x8000000080008081, 0x8000000000008080, 0x0000000080000001, 0x8000000080008008, }; const ROTC = []const usize{ 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 2, 14, 27, 41, 56, 8, 25, 43, 62, 18, 39, 61, 20, 44, }; const PIL = []const usize{ 10, 7, 11, 17, 18, 3, 5, 16, 8, 21, 24, 4, 15, 23, 19, 13, 12, 2, 20, 14, 22, 9, 6, 1, }; const M5 = []const usize{ 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, }; fn keccak_f(comptime F: usize, d: []u8) void { debug.assert(d.len == F / 8); const B = F / 25; const no_rounds = comptime x: { break :x 12 + 2 * math.log2(B); }; var s = []const u64{0} ** 25; var t = []const u64{0} ** 1; var c = []const u64{0} ** 5; for (s) |*r, i| { r.* = mem.readIntLE(u64, d[8 * i .. 8 * i + 8]); } comptime var x: usize = 0; comptime var y: usize = 0; for (RC[0..no_rounds]) |round| { // theta x = 0; inline while (x < 5) : (x += 1) { c[x] = s[x] ^ s[x + 5] ^ s[x + 10] ^ s[x + 15] ^ s[x + 20]; } x = 0; inline while (x < 5) : (x += 1) { t[0] = c[M5[x + 4]] ^ math.rotl(u64, c[M5[x + 1]], usize(1)); y = 0; inline while (y < 5) : (y += 1) { s[x + y * 5] ^= t[0]; } } // rho+pi t[0] = s[1]; x = 0; inline while (x < 24) : (x += 1) { c[0] = s[PIL[x]]; s[PIL[x]] = math.rotl(u64, t[0], ROTC[x]); t[0] = c[0]; } // chi y = 0; inline while (y < 5) : (y += 1) { x = 0; inline while (x < 5) : (x += 1) { c[x] = s[x + y * 5]; } x = 0; inline while (x < 5) : (x += 1) { s[x + y * 5] = c[x] ^ (~c[M5[x + 1]] & c[M5[x + 2]]); } } // iota s[0] ^= round; } for (s) |r, i| { mem.writeInt(d[8 * i .. 8 * i + 8], r, builtin.Endian.Little); } } test "sha3-224 single" { htest.assertEqualHash(Sha3_224, "6b4e03423667dbb73b6e15454f0eb1abd4597f9a1b078e3f5b5a6bc7", ""); htest.assertEqualHash(Sha3_224, "e642824c3f8cf24ad09234ee7d3c766fc9a3a5168d0c94ad73b46fdf", "abc"); htest.assertEqualHash(Sha3_224, "543e6868e1666c1a643630df77367ae5a62a85070a51c14cbf665cbc", "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu"); } test "sha3-224 streaming" { var h = Sha3_224.init(); var out: [28]u8 = undefined; h.final(out[0..]); htest.assertEqual("6b4e03423667dbb73b6e15454f0eb1abd4597f9a1b078e3f5b5a6bc7", out[0..]); h.reset(); h.update("abc"); h.final(out[0..]); htest.assertEqual("e642824c3f8cf24ad09234ee7d3c766fc9a3a5168d0c94ad73b46fdf", out[0..]); h.reset(); h.update("a"); h.update("b"); h.update("c"); h.final(out[0..]); htest.assertEqual("e642824c3f8cf24ad09234ee7d3c766fc9a3a5168d0c94ad73b46fdf", out[0..]); } test "sha3-256 single" { htest.assertEqualHash(Sha3_256, "a7ffc6f8bf1ed76651c14756a061d662f580ff4de43b49fa82d80a4b80f8434a", ""); htest.assertEqualHash(Sha3_256, "3a985da74fe225b2045c172d6bd390bd855f086e3e9d525b46bfe24511431532", "abc"); htest.assertEqualHash(Sha3_256, "916f6061fe879741ca6469b43971dfdb28b1a32dc36cb3254e812be27aad1d18", "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu"); } test "sha3-256 streaming" { var h = Sha3_256.init(); var out: [32]u8 = undefined; h.final(out[0..]); htest.assertEqual("a7ffc6f8bf1ed76651c14756a061d662f580ff4de43b49fa82d80a4b80f8434a", out[0..]); h.reset(); h.update("abc"); h.final(out[0..]); htest.assertEqual("3a985da74fe225b2045c172d6bd390bd855f086e3e9d525b46bfe24511431532", out[0..]); h.reset(); h.update("a"); h.update("b"); h.update("c"); h.final(out[0..]); htest.assertEqual("3a985da74fe225b2045c172d6bd390bd855f086e3e9d525b46bfe24511431532", out[0..]); } test "sha3-256 aligned final" { var block = []u8{0} ** Sha3_256.block_size; var out: [Sha3_256.digest_size]u8 = undefined; var h = Sha3_256.init(); h.update(block); h.final(out[0..]); } test "sha3-384 single" { const h1 = "0c63a75b845e4f7d01107d852e4c2485c51a50aaaa94fc61995e71bbee983a2ac3713831264adb47fb6bd1e058d5f004"; htest.assertEqualHash(Sha3_384, h1, ""); const h2 = "ec01498288516fc926459f58e2c6ad8df9b473cb0fc08c2596da7cf0e49be4b298d88cea927ac7f539f1edf228376d25"; htest.assertEqualHash(Sha3_384, h2, "abc"); const h3 = "79407d3b5916b59c3e30b09822974791c313fb9ecc849e406f23592d04f625dc8c709b98b43b3852b337216179aa7fc7"; htest.assertEqualHash(Sha3_384, h3, "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu"); } test "sha3-384 streaming" { var h = Sha3_384.init(); var out: [48]u8 = undefined; const h1 = "0c63a75b845e4f7d01107d852e4c2485c51a50aaaa94fc61995e71bbee983a2ac3713831264adb47fb6bd1e058d5f004"; h.final(out[0..]); htest.assertEqual(h1, out[0..]); const h2 = "ec01498288516fc926459f58e2c6ad8df9b473cb0fc08c2596da7cf0e49be4b298d88cea927ac7f539f1edf228376d25"; h.reset(); h.update("abc"); h.final(out[0..]); htest.assertEqual(h2, out[0..]); h.reset(); h.update("a"); h.update("b"); h.update("c"); h.final(out[0..]); htest.assertEqual(h2, out[0..]); } test "sha3-512 single" { const h1 = "a69f73cca23a9ac5c8b567dc185a756e97c982164fe25859e0d1dcc1475c80a615b2123af1f5f94c11e3e9402c3ac558f500199d95b6d3e301758586281dcd26"; htest.assertEqualHash(Sha3_512, h1, ""); const h2 = "b751850b1a57168a5693cd924b6b096e08f621827444f70d884f5d0240d2712e10e116e9192af3c91a7ec57647e3934057340b4cf408d5a56592f8274eec53f0"; htest.assertEqualHash(Sha3_512, h2, "abc"); const h3 = "afebb2ef542e6579c50cad06d2e578f9f8dd6881d7dc824d26360feebf18a4fa73e3261122948efcfd492e74e82e2189ed0fb440d187f382270cb455f21dd185"; htest.assertEqualHash(Sha3_512, h3, "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu"); } test "sha3-512 streaming" { var h = Sha3_512.init(); var out: [64]u8 = undefined; const h1 = "a69f73cca23a9ac5c8b567dc185a756e97c982164fe25859e0d1dcc1475c80a615b2123af1f5f94c11e3e9402c3ac558f500199d95b6d3e301758586281dcd26"; h.final(out[0..]); htest.assertEqual(h1, out[0..]); const h2 = "b751850b1a57168a5693cd924b6b096e08f621827444f70d884f5d0240d2712e10e116e9192af3c91a7ec57647e3934057340b4cf408d5a56592f8274eec53f0"; h.reset(); h.update("abc"); h.final(out[0..]); htest.assertEqual(h2, out[0..]); h.reset(); h.update("a"); h.update("b"); h.update("c"); h.final(out[0..]); htest.assertEqual(h2, out[0..]); } test "sha3-512 aligned final" { var block = []u8{0} ** Sha3_512.block_size; var out: [Sha3_512.digest_size]u8 = undefined; var h = Sha3_512.init(); h.update(block); h.final(out[0..]); }