diff options
| -rw-r--r-- | bip-0174.mediawiki | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/bip-0174.mediawiki b/bip-0174.mediawiki index f197728..b352c3b 100644 --- a/bip-0174.mediawiki +++ b/bip-0174.mediawiki @@ -319,6 +319,8 @@ For a Signer to only produce valid signatures for what it expects to sign, it mu * If a witness UTXO is provided, no non-witness signature may be created * If a redeemScript is provided, the scriptPubKey must be for that redeemScript * If a witnessScript is provided, the scriptPubKey or the redeemScript must be for that witnessScript +* If a sighash type is provided, the signer must check that the sighash is acceptable. If unacceptable, they must fail. +* If a sighash type is not provided, the signer should sign using SIGHASH_ALL, but may use any sighash type they wish. =====Simple Signer Algorithm===== @@ -326,13 +328,17 @@ A simple signer can use the following algorithm to determine what and how to sig <pre> sign_witness(script_code, i): - for key in psbt.inputs[i].keys: - if IsMine(key): + for key, sighash_type in psbt.inputs[i].items: + if sighash_type == None: + sighash_type = SIGHASH_ALL + if IsMine(key) and IsAcceptable(sighash_type): sign(witness_sighash(script_code, i, input)) sign_non_witness(script_code, i): - for key in psbt.inputs[i].keys: - if IsMine(key): + for key, sighash_type in psbt.inputs[i].items: + if sighash_type == None: + sighash_type = SIGHASH_ALL + if IsMine(key) and IsAcceptable(sighash_type): sign(non_witness_sighash(script_code, i, input)) for input,i in enumerate(psbt.inputs): |