diff options
Diffstat (limited to 'bip-tapscript.mediawiki')
| -rw-r--r-- | bip-tapscript.mediawiki | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/bip-tapscript.mediawiki b/bip-tapscript.mediawiki index a40cfc8..87b307a 100644 --- a/bip-tapscript.mediawiki +++ b/bip-tapscript.mediawiki @@ -108,9 +108,9 @@ The one-byte <code>spend_type</code> has a different value, specificially at bit As additional pieces of data, added at the end of the input to the ''hash<sub>TapSighash</sub>'' function: * <code>tapleaf_hash</code> (32): the tapleaf hash as defined in bip-taproot * <code>key_version</code> (1): a constant value <code>0x00</code> representing the current version of public keys in the tapscript signature opcode execution. -* <code>codeseparator_position</code> (2): the opcode position of the last executed <code>OP_CODESEPARATOR</code> before the currently executed signature opcode, with the value in little endian (or <code>0xffff</code> if none executed). The first opcode in a script has a position of 0. A multi-byte push opcode is counted as one opcode, regardless of the size of data being pushed. +* <code>codeseparator_position</code> (4): the opcode position of the last executed <code>OP_CODESEPARATOR</code> before the currently executed signature opcode, with the value in little endian (or <code>0xffffffff</code> if none executed). The first opcode in a script has a position of 0. A multi-byte push opcode is counted as one opcode, regardless of the size of data being pushed. -The total number of bytes hashed is at most ''244''<ref>'''What is the number of bytes hashed for the signature hash?''' The total size of the input to ''hash<sub>TapSighash</sub>'' (excluding the initial 64-byte hash tag) can be computed using the following formula: ''211 - is_anyonecanpay * 50 - is_none * 32 + has_annex * 32''.</ref>. +The total number of bytes hashed is at most ''246''<ref>'''What is the number of bytes hashed for the signature hash?''' The total size of the input to ''hash<sub>TapSighash</sub>'' (excluding the initial 64-byte hash tag) can be computed using the following formula: ''213 - is_anyonecanpay * 50 - is_none * 32 + has_annex * 32''.</ref>. In summary, the semantics of the BIP143 sighash types remain unchanged, except the following: # The exceptions mentioned in bip-taproot. |