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elements: Construct the block header hash while we parse it

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This commit is contained in:
Christian Decker 2020-01-23 16:00:09 +01:00
parent 8839be641a
commit fce05d74e1
1 changed files with 3 additions and 0 deletions
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bitcoin/block.c
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@ -52,8 +52,11 @@ bitcoin_block_from_hex(const tal_t *ctx, const struct chainparams *chainparams,
if (is_elements(chainparams)) {
b->elements_hdr = tal(b, struct elements_block_hdr);
b->elements_hdr->block_height = pull_le32(&p, &len);
sha256_le32(&shactx, b->elements_hdr->block_height);
size_t challenge_len = pull_varint(&p, &len);
sha256_varint(&shactx, challenge_len);
sha256_update(&shactx, p, challenge_len);
b->elements_hdr->proof.challenge = tal_arr(b->elements_hdr, u8, challenge_len);
pull(&p, &len, b->elements_hdr->proof.challenge, challenge_len);