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68 lines
2.3 KiB
68 lines
2.3 KiB
10 years ago
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#if !defined(SCRYPT_CHOOSE_COMPILETIME)
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/* function type returned by scrypt_getROMix, used with cpu detection */
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typedef void (FASTCALL *scrypt_ROMixfn)(scrypt_mix_word_t *X/*[chunkWords]*/, scrypt_mix_word_t *Y/*[chunkWords]*/, scrypt_mix_word_t *V/*[chunkWords * N]*/, uint32_t N, uint32_t r);
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#endif
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/* romix pre/post nop function */
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static void asm_calling_convention
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scrypt_romix_nop(scrypt_mix_word_t *blocks, size_t nblocks) {
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}
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/* romix pre/post endian conversion function */
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static void asm_calling_convention
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scrypt_romix_convert_endian(scrypt_mix_word_t *blocks, size_t nblocks) {
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#if !defined(CPU_LE)
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static const union { uint8_t b[2]; uint16_t w; } endian_test = {{1,0}};
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size_t i;
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if (endian_test.w == 0x100) {
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nblocks *= SCRYPT_BLOCK_WORDS;
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for (i = 0; i < nblocks; i++) {
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SCRYPT_WORD_ENDIAN_SWAP(blocks[i]);
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}
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}
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#endif
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}
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/* chunkmix test function */
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typedef void (asm_calling_convention *chunkmixfn)(scrypt_mix_word_t *Bout/*[chunkWords]*/, scrypt_mix_word_t *Bin/*[chunkWords]*/, scrypt_mix_word_t *Bxor/*[chunkWords]*/, uint32_t r);
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typedef void (asm_calling_convention *blockfixfn)(scrypt_mix_word_t *blocks, size_t nblocks);
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static int
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scrypt_test_mix_instance(chunkmixfn mixfn, blockfixfn prefn, blockfixfn postfn, const uint8_t expected[16]) {
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/* r = 2, (2 * r) = 4 blocks in a chunk, 4 * SCRYPT_BLOCK_WORDS total */
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const uint32_t r = 2, blocks = 2 * r, words = blocks * SCRYPT_BLOCK_WORDS;
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scrypt_mix_word_t MM16 chunk[2][4 * SCRYPT_BLOCK_WORDS], v;
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uint8_t final[16];
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size_t i;
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for (i = 0; i < words; i++) {
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v = (scrypt_mix_word_t)i;
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v = (v << 8) | v;
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v = (v << 16) | v;
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chunk[0][i] = v;
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}
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prefn(chunk[0], blocks);
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mixfn(chunk[1], chunk[0], NULL, r);
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postfn(chunk[1], blocks);
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/* grab the last 16 bytes of the final block */
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for (i = 0; i < 16; i += sizeof(scrypt_mix_word_t)) {
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SCRYPT_WORDTO8_LE(final + i, chunk[1][words - (16 / sizeof(scrypt_mix_word_t)) + (i / sizeof(scrypt_mix_word_t))]);
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}
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return scrypt_verify(expected, final, 16);
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}
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/* returns a pointer to item i, where item is len scrypt_mix_word_t's long */
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static scrypt_mix_word_t *
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scrypt_item(scrypt_mix_word_t *base, scrypt_mix_word_t i, scrypt_mix_word_t len) {
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return base + (i * len);
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}
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/* returns a pointer to block i */
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static scrypt_mix_word_t *
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scrypt_block(scrypt_mix_word_t *base, scrypt_mix_word_t i) {
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return base + (i * SCRYPT_BLOCK_WORDS);
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}
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