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| 1 | // Based on public domain Supercop by Daniel J. Bernstein |
| 2 | |
| 3 | const std = @import("../index.zig"); |
| 4 | const mem = std.mem; |
| 5 | const endian = std.endian; |
| 6 | const assert = std.debug.assert; |
| 7 | const builtin = @import("builtin"); |
| 8 | |
| 9 | const QuarterRound = struct { |
| 10 | a: usize, |
| 11 | b: usize, |
| 12 | c: usize, |
| 13 | d: usize, |
| 14 | }; |
| 15 | |
| 16 | fn Rp(a: usize, b: usize, c: usize, d: usize) QuarterRound { |
| 17 | return QuarterRound{ |
| 18 | .a = a, |
| 19 | .b = b, |
| 20 | .c = c, |
| 21 | .d = d, |
| 22 | }; |
| 23 | } |
| 24 | |
| 25 | fn rotate(a: u32, b: u5) u32 { |
| 26 | return ((a << b) | |
| 27 | (a >> @intCast(u5, (32 - @intCast(u6, b)))) |
| 28 | ); |
| 29 | } |
| 30 | |
| 31 | // The chacha family of ciphers are based on the salsa family. |
| 32 | fn salsa20_wordtobyte(input: [16]u32) [64]u8 { |
| 33 | var x: [16]u32 = undefined; |
| 34 | var out: [64]u8 = undefined; |
| 35 | |
| 36 | for (x) |_, i| |
| 37 | x[i] = input[i]; |
| 38 | const rounds = comptime []QuarterRound{ |
| 39 | Rp( 0, 4, 8,12), |
| 40 | Rp( 1, 5, 9,13), |
| 41 | Rp( 2, 6,10,14), |
| 42 | Rp( 3, 7,11,15), |
| 43 | Rp( 0, 5,10,15), |
| 44 | Rp( 1, 6,11,12), |
| 45 | Rp( 2, 7, 8,13), |
| 46 | Rp( 3, 4, 9,14), |
| 47 | }; |
| 48 | comptime var j: usize = 20; |
| 49 | inline while (j > 0) : (j -=2) { |
| 50 | for (rounds) |r| { |
| 51 | x[r.a] +%= x[r.b]; x[r.d] = rotate(x[r.d] ^ x[r.a], 16); |
| 52 | x[r.c] +%= x[r.d]; x[r.b] = rotate(x[r.b] ^ x[r.c], 12); |
| 53 | x[r.a] +%= x[r.b]; x[r.d] = rotate(x[r.d] ^ x[r.a], 8); |
| 54 | x[r.c] +%= x[r.d]; x[r.b] = rotate(x[r.b] ^ x[r.c], 7); |
| 55 | } |
| 56 | } |
| 57 | for (x) |_, i| |
| 58 | x[i] +%= input[i]; |
| 59 | for (x) |_, i| |
| 60 | mem.writeInt(out[4 * i .. 4 * i + 4], x[i], builtin.Endian.Little); |
| 61 | return out; |
| 62 | } |
| 63 | |
| 64 | fn chaCha20_internal(out: []u8, in: []const u8, key: [8]u32, counter: [4]u32) void { |
| 65 | var ctx: [16]u32 = undefined; |
| 66 | var remaining: usize = if (in.len > out.len) in.len else out.len; |
| 67 | var cursor: usize = 0; |
| 68 | |
| 69 | const c = "expand 32-byte k"; |
| 70 | const constant_le = []u32{ |
| 71 | mem.readIntLE(u32, c[0..4]), |
| 72 | mem.readIntLE(u32, c[4..8]), |
| 73 | mem.readIntLE(u32, c[8..12]), |
| 74 | mem.readIntLE(u32, c[12..16]), |
| 75 | }; |
| 76 | |
| 77 | mem.copy(u32, ctx[0..], constant_le[0..4]); |
| 78 | mem.copy(u32, ctx[4..12], key[0..8]); |
| 79 | mem.copy(u32, ctx[12..16], counter[0..4]); |
| 80 | |
| 81 | while (true) { |
| 82 | var buf = salsa20_wordtobyte(ctx); |
| 83 | |
| 84 | if (remaining < 64) { |
| 85 | var i: usize = 0; |
| 86 | while (i < remaining) : (i += 1) |
| 87 | out[cursor + i] = in[cursor + i] ^ buf[i]; |
| 88 | return; |
| 89 | } |
| 90 | |
| 91 | comptime var i: usize = 0; |
| 92 | inline while (i < 64) : (i += 1) |
| 93 | out[cursor + i] = in[cursor + i] ^ buf[i]; |
| 94 | |
| 95 | cursor += 64; |
| 96 | remaining -= 64; |
| 97 | |
| 98 | ctx[12] += 1; |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | /// ChaCha20 avoids the possibility of timing attacks, as there are no branches |
| 103 | /// on secret key data. |
| 104 | /// |
| 105 | /// in and out should be the same length. |
| 106 | /// counter should generally be 0 or 1 |
| 107 | /// |
| 108 | /// ChaCha20 is self-reversing. To decrypt just run the cipher with the same |
| 109 | /// counter, nonce, and key. |
| 110 | pub fn chaCha20IETF(out: []u8, in: []const u8, counter: u32, key: [32]u8, nonce: [12]u8) void { |
| 111 | assert(in.len >= out.len); |
| 112 | assert((in.len >> 6) + counter <= @maxValue(u32)); |
| 113 | |
| 114 | var k: [8]u32 = undefined; |
| 115 | var c: [4]u32 = undefined; |
| 116 | |
| 117 | k[0] = mem.readIntLE(u32, key[0..4]); |
| 118 | k[1] = mem.readIntLE(u32, key[4..8]); |
| 119 | k[2] = mem.readIntLE(u32, key[8..12]); |
| 120 | k[3] = mem.readIntLE(u32, key[12..16]); |
| 121 | k[4] = mem.readIntLE(u32, key[16..20]); |
| 122 | k[5] = mem.readIntLE(u32, key[20..24]); |
| 123 | k[6] = mem.readIntLE(u32, key[24..28]); |
| 124 | k[7] = mem.readIntLE(u32, key[28..32]); |
| 125 | |
| 126 | c[0] = counter; |
| 127 | c[1] = mem.readIntLE(u32, nonce[0..4]); |
| 128 | c[2] = mem.readIntLE(u32, nonce[4..8]); |
| 129 | c[3] = mem.readIntLE(u32, nonce[8..12]); |
| 130 | chaCha20_internal(out, in, k, c); |
| 131 | } |
| 132 | |
| 133 | /// This is the original ChaCha20 before RFC 7539, which recommends using the |
| 134 | /// orgininal version on applications such as disk or file encryption that might |
| 135 | /// exceed the 256 GiB limit of the 96-bit nonce version. |
| 136 | pub fn chaCha20With64BitNonce(out: []u8, in: []const u8, counter: u64, key: [32]u8, nonce: [8]u8) void { |
| 137 | assert(in.len >= out.len); |
| 138 | assert(counter +% (in.len >> 6) >= counter); |
| 139 | |
| 140 | var cursor: u64 = 0; |
| 141 | var k: [8]u32 = undefined; |
| 142 | var c: [4]u32 = undefined; |
| 143 | |
| 144 | k[0] = mem.readIntLE(u32, key[0..4]); |
| 145 | k[1] = mem.readIntLE(u32, key[4..8]); |
| 146 | k[2] = mem.readIntLE(u32, key[8..12]); |
| 147 | k[3] = mem.readIntLE(u32, key[12..16]); |
| 148 | k[4] = mem.readIntLE(u32, key[16..20]); |
| 149 | k[5] = mem.readIntLE(u32, key[20..24]); |
| 150 | k[6] = mem.readIntLE(u32, key[24..28]); |
| 151 | k[7] = mem.readIntLE(u32, key[28..32]); |
| 152 | |
| 153 | c[0] = @truncate(u32, counter); |
| 154 | c[1] = @truncate(u32, counter >> 32); |
| 155 | c[2] = mem.readIntLE(u32, nonce[0..4]); |
| 156 | c[3] = mem.readIntLE(u32, nonce[4..8]); |
| 157 | |
| 158 | const block_size = (1 << 6); |
| 159 | const big_block = (block_size << 32); |
| 160 | |
| 161 | // first partial big block |
| 162 | if (((@intCast(u64, @maxValue(u32) - @truncate(u32, counter)) + 1) << 6) < in.len) { |
| 163 | chaCha20_internal(out[cursor..big_block], in[cursor..big_block], k, c); |
| 164 | cursor = big_block - cursor; |
| 165 | c[1] += 1; |
| 166 | if (comptime @sizeOf(usize) > 4) { |
| 167 | // A big block is giant: 256 GiB, but we can avoid this limitation |
| 168 | var remaining_blocks: u32 = @intCast(u32, (in.len / big_block)); |
| 169 | var i: u32 = 0; |
| 170 | while (remaining_blocks > 0) : (remaining_blocks -= 1) { |
| 171 | chaCha20_internal(out[cursor..cursor + big_block], in[cursor..cursor + big_block], k, c); |
| 172 | c[1] += 1; // upper 32-bit of counter, generic chaCha20_internal() doesn't |
| 173 | // know about this. |
| 174 | cursor += big_block; |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | chaCha20_internal(out[cursor..], in[cursor..], k, c); |
| 180 | } |
| 181 | |
| 182 | // https://tools.ietf.org/html/rfc7539#section-2.4.2 |
| 183 | test "crypto.chacha20 test vector sunscreen" { |
| 184 | const expected_result = []u8{ |
| 185 | 0x6e, 0x2e, 0x35, 0x9a, 0x25, 0x68, 0xf9, 0x80, |
| 186 | 0x41, 0xba, 0x07, 0x28, 0xdd, 0x0d, 0x69, 0x81, |
| 187 | 0xe9, 0x7e, 0x7a, 0xec, 0x1d, 0x43, 0x60, 0xc2, |
| 188 | 0x0a, 0x27, 0xaf, 0xcc, 0xfd, 0x9f, 0xae, 0x0b, |
| 189 | 0xf9, 0x1b, 0x65, 0xc5, 0x52, 0x47, 0x33, 0xab, |
| 190 | 0x8f, 0x59, 0x3d, 0xab, 0xcd, 0x62, 0xb3, 0x57, |
| 191 | 0x16, 0x39, 0xd6, 0x24, 0xe6, 0x51, 0x52, 0xab, |
| 192 | 0x8f, 0x53, 0x0c, 0x35, 0x9f, 0x08, 0x61, 0xd8, |
| 193 | 0x07, 0xca, 0x0d, 0xbf, 0x50, 0x0d, 0x6a, 0x61, |
| 194 | 0x56, 0xa3, 0x8e, 0x08, 0x8a, 0x22, 0xb6, 0x5e, |
| 195 | 0x52, 0xbc, 0x51, 0x4d, 0x16, 0xcc, 0xf8, 0x06, |
| 196 | 0x81, 0x8c, 0xe9, 0x1a, 0xb7, 0x79, 0x37, 0x36, |
| 197 | 0x5a, 0xf9, 0x0b, 0xbf, 0x74, 0xa3, 0x5b, 0xe6, |
| 198 | 0xb4, 0x0b, 0x8e, 0xed, 0xf2, 0x78, 0x5e, 0x42, |
| 199 | 0x87, 0x4d, |
| 200 | }; |
| 201 | const input = "Ladies and Gentlemen of the class of '99: If I could offer you only one tip for the future, sunscreen would be it."; |
| 202 | var result: [114]u8 = undefined; |
| 203 | const key = []u8{ |
| 204 | 0, 1, 2, 3, 4, 5, 6, 7, |
| 205 | 8, 9,10,11,12,13,14,15, |
| 206 | 16,17,18,19,20,21,22,23, |
| 207 | 24,25,26,27,28,29,30,31, |
| 208 | }; |
| 209 | const nonce = []u8{ |
| 210 | 0, 0, 0, 0, |
| 211 | 0, 0, 0, 0x4a, |
| 212 | 0, 0, 0, 0, |
| 213 | }; |
| 214 | |
| 215 | chaCha20IETF(result[0..], input[0..], 1, key, nonce); |
| 216 | assert(mem.eql(u8, expected_result, result)); |
| 217 | |
| 218 | // Chacha20 is self-reversing. |
| 219 | var plaintext: [114]u8 = undefined; |
| 220 | chaCha20IETF(plaintext[0..], result[0..], 1, key, nonce); |
| 221 | assert(mem.compare(u8, input, plaintext) == mem.Compare.Equal); |
| 222 | } |
| 223 | |
| 224 | // https://tools.ietf.org/html/draft-agl-tls-chacha20poly1305-04#section-7 |
| 225 | test "crypto.chacha20 test vector 1" { |
| 226 | const expected_result = []u8{ |
| 227 | 0x76, 0xb8, 0xe0, 0xad, 0xa0, 0xf1, 0x3d, 0x90, |
| 228 | 0x40, 0x5d, 0x6a, 0xe5, 0x53, 0x86, 0xbd, 0x28, |
| 229 | 0xbd, 0xd2, 0x19, 0xb8, 0xa0, 0x8d, 0xed, 0x1a, |
| 230 | 0xa8, 0x36, 0xef, 0xcc, 0x8b, 0x77, 0x0d, 0xc7, |
| 231 | 0xda, 0x41, 0x59, 0x7c, 0x51, 0x57, 0x48, 0x8d, |
| 232 | 0x77, 0x24, 0xe0, 0x3f, 0xb8, 0xd8, 0x4a, 0x37, |
| 233 | 0x6a, 0x43, 0xb8, 0xf4, 0x15, 0x18, 0xa1, 0x1c, |
| 234 | 0xc3, 0x87, 0xb6, 0x69, 0xb2, 0xee, 0x65, 0x86, |
| 235 | }; |
| 236 | const input = []u8{ |
| 237 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 238 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 239 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 240 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 241 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 242 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 243 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 244 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 245 | }; |
| 246 | var result: [64]u8 = undefined; |
| 247 | const key = []u8{ |
| 248 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 249 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 250 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 251 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 252 | }; |
| 253 | const nonce = []u8{0, 0, 0, 0, 0, 0, 0, 0}; |
| 254 | |
| 255 | chaCha20With64BitNonce(result[0..], input[0..], 0, key, nonce); |
| 256 | assert(mem.eql(u8, expected_result, result)); |
| 257 | } |
| 258 | |
| 259 | test "crypto.chacha20 test vector 2" { |
| 260 | const expected_result = []u8{ |
| 261 | 0x45, 0x40, 0xf0, 0x5a, 0x9f, 0x1f, 0xb2, 0x96, |
| 262 | 0xd7, 0x73, 0x6e, 0x7b, 0x20, 0x8e, 0x3c, 0x96, |
| 263 | 0xeb, 0x4f, 0xe1, 0x83, 0x46, 0x88, 0xd2, 0x60, |
| 264 | 0x4f, 0x45, 0x09, 0x52, 0xed, 0x43, 0x2d, 0x41, |
| 265 | 0xbb, 0xe2, 0xa0, 0xb6, 0xea, 0x75, 0x66, 0xd2, |
| 266 | 0xa5, 0xd1, 0xe7, 0xe2, 0x0d, 0x42, 0xaf, 0x2c, |
| 267 | 0x53, 0xd7, 0x92, 0xb1, 0xc4, 0x3f, 0xea, 0x81, |
| 268 | 0x7e, 0x9a, 0xd2, 0x75, 0xae, 0x54, 0x69, 0x63, |
| 269 | }; |
| 270 | const input = []u8{ |
| 271 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 272 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 273 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 274 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 275 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 276 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 277 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 278 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 279 | }; |
| 280 | var result: [64]u8 = undefined; |
| 281 | const key = []u8{ |
| 282 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 283 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 284 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 285 | 0, 0, 0, 0, 0, 0, 0, 1, |
| 286 | }; |
| 287 | const nonce = []u8{0, 0, 0, 0, 0, 0, 0, 0}; |
| 288 | |
| 289 | chaCha20With64BitNonce(result[0..], input[0..], 0, key, nonce); |
| 290 | assert(mem.eql(u8, expected_result, result)); |
| 291 | } |
| 292 | |
| 293 | test "crypto.chacha20 test vector 3" { |
| 294 | const expected_result = []u8{ |
| 295 | 0xde, 0x9c, 0xba, 0x7b, 0xf3, 0xd6, 0x9e, 0xf5, |
| 296 | 0xe7, 0x86, 0xdc, 0x63, 0x97, 0x3f, 0x65, 0x3a, |
| 297 | 0x0b, 0x49, 0xe0, 0x15, 0xad, 0xbf, 0xf7, 0x13, |
| 298 | 0x4f, 0xcb, 0x7d, 0xf1, 0x37, 0x82, 0x10, 0x31, |
| 299 | 0xe8, 0x5a, 0x05, 0x02, 0x78, 0xa7, 0x08, 0x45, |
| 300 | 0x27, 0x21, 0x4f, 0x73, 0xef, 0xc7, 0xfa, 0x5b, |
| 301 | 0x52, 0x77, 0x06, 0x2e, 0xb7, 0xa0, 0x43, 0x3e, |
| 302 | 0x44, 0x5f, 0x41, 0xe3, |
| 303 | }; |
| 304 | const input = []u8{ |
| 305 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 306 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 307 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 308 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 309 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 310 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 311 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 312 | 0x00, 0x00, 0x00, 0x00, |
| 313 | }; |
| 314 | var result: [60]u8 = undefined; |
| 315 | const key = []u8{ |
| 316 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 317 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 318 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 319 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 320 | }; |
| 321 | const nonce = []u8{0, 0, 0, 0, 0, 0, 0, 1}; |
| 322 | |
| 323 | chaCha20With64BitNonce(result[0..], input[0..], 0, key, nonce); |
| 324 | assert(mem.eql(u8, expected_result, result)); |
| 325 | } |
| 326 | |
| 327 | test "crypto.chacha20 test vector 4" { |
| 328 | const expected_result = []u8{ |
| 329 | 0xef, 0x3f, 0xdf, 0xd6, 0xc6, 0x15, 0x78, 0xfb, |
| 330 | 0xf5, 0xcf, 0x35, 0xbd, 0x3d, 0xd3, 0x3b, 0x80, |
| 331 | 0x09, 0x63, 0x16, 0x34, 0xd2, 0x1e, 0x42, 0xac, |
| 332 | 0x33, 0x96, 0x0b, 0xd1, 0x38, 0xe5, 0x0d, 0x32, |
| 333 | 0x11, 0x1e, 0x4c, 0xaf, 0x23, 0x7e, 0xe5, 0x3c, |
| 334 | 0xa8, 0xad, 0x64, 0x26, 0x19, 0x4a, 0x88, 0x54, |
| 335 | 0x5d, 0xdc, 0x49, 0x7a, 0x0b, 0x46, 0x6e, 0x7d, |
| 336 | 0x6b, 0xbd, 0xb0, 0x04, 0x1b, 0x2f, 0x58, 0x6b, |
| 337 | }; |
| 338 | const input = []u8{ |
| 339 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 340 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 341 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 342 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 343 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 344 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 345 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 346 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 347 | }; |
| 348 | var result: [64]u8 = undefined; |
| 349 | const key = []u8{ |
| 350 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 351 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 352 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 353 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 354 | }; |
| 355 | const nonce = []u8{1, 0, 0, 0, 0, 0, 0, 0}; |
| 356 | |
| 357 | chaCha20With64BitNonce(result[0..], input[0..], 0, key, nonce); |
| 358 | assert(mem.eql(u8, expected_result, result)); |
| 359 | } |
| 360 | |
| 361 | test "crypto.chacha20 test vector 5" { |
| 362 | const expected_result = []u8{ |
| 363 | 0xf7, 0x98, 0xa1, 0x89, 0xf1, 0x95, 0xe6, 0x69, |
| 364 | 0x82, 0x10, 0x5f, 0xfb, 0x64, 0x0b, 0xb7, 0x75, |
| 365 | 0x7f, 0x57, 0x9d, 0xa3, 0x16, 0x02, 0xfc, 0x93, |
| 366 | 0xec, 0x01, 0xac, 0x56, 0xf8, 0x5a, 0xc3, 0xc1, |
| 367 | 0x34, 0xa4, 0x54, 0x7b, 0x73, 0x3b, 0x46, 0x41, |
| 368 | 0x30, 0x42, 0xc9, 0x44, 0x00, 0x49, 0x17, 0x69, |
| 369 | 0x05, 0xd3, 0xbe, 0x59, 0xea, 0x1c, 0x53, 0xf1, |
| 370 | 0x59, 0x16, 0x15, 0x5c, 0x2b, 0xe8, 0x24, 0x1a, |
| 371 | |
| 372 | 0x38, 0x00, 0x8b, 0x9a, 0x26, 0xbc, 0x35, 0x94, |
| 373 | 0x1e, 0x24, 0x44, 0x17, 0x7c, 0x8a, 0xde, 0x66, |
| 374 | 0x89, 0xde, 0x95, 0x26, 0x49, 0x86, 0xd9, 0x58, |
| 375 | 0x89, 0xfb, 0x60, 0xe8, 0x46, 0x29, 0xc9, 0xbd, |
| 376 | 0x9a, 0x5a, 0xcb, 0x1c, 0xc1, 0x18, 0xbe, 0x56, |
| 377 | 0x3e, 0xb9, 0xb3, 0xa4, 0xa4, 0x72, 0xf8, 0x2e, |
| 378 | 0x09, 0xa7, 0xe7, 0x78, 0x49, 0x2b, 0x56, 0x2e, |
| 379 | 0xf7, 0x13, 0x0e, 0x88, 0xdf, 0xe0, 0x31, 0xc7, |
| 380 | |
| 381 | 0x9d, 0xb9, 0xd4, 0xf7, 0xc7, 0xa8, 0x99, 0x15, |
| 382 | 0x1b, 0x9a, 0x47, 0x50, 0x32, 0xb6, 0x3f, 0xc3, |
| 383 | 0x85, 0x24, 0x5f, 0xe0, 0x54, 0xe3, 0xdd, 0x5a, |
| 384 | 0x97, 0xa5, 0xf5, 0x76, 0xfe, 0x06, 0x40, 0x25, |
| 385 | 0xd3, 0xce, 0x04, 0x2c, 0x56, 0x6a, 0xb2, 0xc5, |
| 386 | 0x07, 0xb1, 0x38, 0xdb, 0x85, 0x3e, 0x3d, 0x69, |
| 387 | 0x59, 0x66, 0x09, 0x96, 0x54, 0x6c, 0xc9, 0xc4, |
| 388 | 0xa6, 0xea, 0xfd, 0xc7, 0x77, 0xc0, 0x40, 0xd7, |
| 389 | |
| 390 | 0x0e, 0xaf, 0x46, 0xf7, 0x6d, 0xad, 0x39, 0x79, |
| 391 | 0xe5, 0xc5, 0x36, 0x0c, 0x33, 0x17, 0x16, 0x6a, |
| 392 | 0x1c, 0x89, 0x4c, 0x94, 0xa3, 0x71, 0x87, 0x6a, |
| 393 | 0x94, 0xdf, 0x76, 0x28, 0xfe, 0x4e, 0xaa, 0xf2, |
| 394 | 0xcc, 0xb2, 0x7d, 0x5a, 0xaa, 0xe0, 0xad, 0x7a, |
| 395 | 0xd0, 0xf9, 0xd4, 0xb6, 0xad, 0x3b, 0x54, 0x09, |
| 396 | 0x87, 0x46, 0xd4, 0x52, 0x4d, 0x38, 0x40, 0x7a, |
| 397 | 0x6d, 0xeb, 0x3a, 0xb7, 0x8f, 0xab, 0x78, 0xc9, |
| 398 | }; |
| 399 | const input = []u8{ |
| 400 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 401 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 402 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 403 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 404 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 405 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 406 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 407 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 408 | |
| 409 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 410 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 411 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 412 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 413 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 414 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 415 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 416 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 417 | }; |
| 418 | var result: [256]u8 = undefined; |
| 419 | const key = []u8{ |
| 420 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 421 | 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 422 | 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| 423 | 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, |
| 424 | }; |
| 425 | const nonce = []u8{ |
| 426 | 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 427 | }; |
| 428 | |
| 429 | chaCha20With64BitNonce(result[0..], input[0..], 0, key, nonce); |
| 430 | assert(mem.eql(u8, expected_result, result)); |
| 431 | } |
Shawn Landden <shawn@git.icu> 2018-08-10 19:01:37-07:00
std