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@ -37,6 +37,18 @@ void hasher_Init(Hasher *hasher, HasherType type) {
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case HASHER_GROESTLD_TRUNC:
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groestl512_Init(&hasher->ctx.groestl);
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break;
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case HASHER_OVERWINTER_PREVOUTS:
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blake2b_InitKey(&hasher->ctx.blake2b, 32, "ZcashPrevoutHash", 16);
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break;
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case HASHER_OVERWINTER_SEQUENCE:
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blake2b_InitKey(&hasher->ctx.blake2b, 32, "ZcashSequencHash", 16);
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break;
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case HASHER_OVERWINTER_OUTPUTS:
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blake2b_InitKey(&hasher->ctx.blake2b, 32, "ZcashOutputsHash", 16);
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break;
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case HASHER_OVERWINTER_PREIMAGE:
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blake2b_InitKey(&hasher->ctx.blake2b, 32, "ZcashSigHash\x19\x1b\xa8\x5b", 16); // BRANCH_ID = 0x5ba81b19
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break;
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}
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}
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@ -57,32 +69,39 @@ void hasher_Update(Hasher *hasher, const uint8_t *data, size_t length) {
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case HASHER_GROESTLD_TRUNC:
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groestl512_Update(&hasher->ctx.groestl, data, length);
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break;
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case HASHER_OVERWINTER_PREVOUTS:
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case HASHER_OVERWINTER_SEQUENCE:
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case HASHER_OVERWINTER_OUTPUTS:
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case HASHER_OVERWINTER_PREIMAGE:
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blake2b_Update(&hasher->ctx.blake2b, data, length);
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break;
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}
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}
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void hasher_Final(Hasher *hasher, uint8_t hash[HASHER_DIGEST_LENGTH]) {
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switch (hasher->type) {
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case HASHER_SHA2:
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sha256_Final(&hasher->ctx.sha2, hash);
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break;
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case HASHER_SHA2D:
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sha256_Final(&hasher->ctx.sha2, hash);
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hasher_Raw(HASHER_SHA2, hash, HASHER_DIGEST_LENGTH, hash);
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break;
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case HASHER_BLAKE:
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blake256_Final(&hasher->ctx.blake, hash);
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break;
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case HASHER_BLAKED:
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blake256_Final(&hasher->ctx.blake, hash);
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hasher_Raw(HASHER_BLAKE, hash, HASHER_DIGEST_LENGTH, hash);
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break;
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case HASHER_GROESTLD_TRUNC:
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groestl512_DoubleTrunc(&hasher->ctx.groestl, hash);
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return;
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}
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switch (hasher->type) {
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case HASHER_SHA2D:
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hasher_Raw(HASHER_SHA2, hash, HASHER_DIGEST_LENGTH, hash);
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break;
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case HASHER_BLAKED:
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hasher_Raw(HASHER_BLAKE, hash, HASHER_DIGEST_LENGTH, hash);
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break;
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default:
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case HASHER_OVERWINTER_PREVOUTS:
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case HASHER_OVERWINTER_SEQUENCE:
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case HASHER_OVERWINTER_OUTPUTS:
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case HASHER_OVERWINTER_PREIMAGE:
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blake2b_Final(&hasher->ctx.blake2b, hash, 32);
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break;
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}
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}
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