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script: add p2sh scriptpubkey helper to create from hash.

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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2017-10-26 13:25:19 +10:30
parent 79df10f782
commit f9edbcb4ec
2 changed files with 14 additions and 5 deletions
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16
bitcoin/script.c
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@ -182,17 +182,23 @@ u8 *bitcoin_redeem_2of2(const tal_t *ctx,
return script;
}
u8 *scriptpubkey_p2sh_hash(const tal_t *ctx, const struct ripemd160 *redeemhash)
{
u8 *script = tal_arr(ctx, u8, 0);
add_op(&script, OP_HASH160);
add_push_bytes(&script, redeemhash->u.u8, sizeof(redeemhash->u.u8));
add_op(&script, OP_EQUAL);
return script;
}
/* Create p2sh for this redeem script. */
u8 *scriptpubkey_p2sh(const tal_t *ctx, const u8 *redeemscript)
{
struct ripemd160 redeemhash;
u8 *script = tal_arr(ctx, u8, 0);
add_op(&script, OP_HASH160);
hash160(&redeemhash, redeemscript, tal_count(redeemscript));
add_push_bytes(&script, redeemhash.u.u8, sizeof(redeemhash.u.u8));
add_op(&script, OP_EQUAL);
return script;
return scriptpubkey_p2sh_hash(ctx, &redeemhash);
}
/* Create an output script using p2pkh */

3
bitcoin/script.h
View file

@ -23,6 +23,9 @@ u8 *bitcoin_redeem_2of2(const tal_t *ctx,
/* Create an output script using p2sh for this redeem script. */
u8 *scriptpubkey_p2sh(const tal_t *ctx, const u8 *redeemscript);
/* Create an output script using p2sh for this hash. */
u8 *scriptpubkey_p2sh_hash(const tal_t *ctx, const struct ripemd160 *redeemhash);
/* Create an output script using p2pkh */
u8 *scriptpubkey_p2pkh(const tal_t *ctx, const struct bitcoin_address *addr);