diff options
Diffstat (limited to 'src/script/interpreter.h')
| -rw-r--r-- | src/script/interpreter.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/script/interpreter.h b/src/script/interpreter.h index 14cccc558f..35b2f6c65a 100644 --- a/src/script/interpreter.h +++ b/src/script/interpreter.h @@ -35,8 +35,8 @@ enum SCRIPT_VERIFY_P2SH = (1U << 0), // Passing a non-strict-DER signature or one with undefined hashtype to a checksig operation causes script failure. - // Passing a pubkey that is not (0x04 + 64 bytes) or (0x02 or 0x03 + 32 bytes) to checksig causes that pubkey to be - // skipped (not softfork safe: this flag can widen the validity of OP_CHECKSIG OP_NOT). + // Evaluating a pubkey that is not (0x04 + 64 bytes) or (0x02 or 0x03 + 32 bytes) by checksig causes script failure. + // (softfork safe, but not used or intended as a consensus rule). SCRIPT_VERIFY_STRICTENC = (1U << 1), // Passing a non-strict-DER signature to a checksig operation causes script failure (softfork safe, BIP62 rule 1) @@ -57,7 +57,18 @@ enum // any other push causes the script to fail (BIP62 rule 3). // In addition, whenever a stack element is interpreted as a number, it must be of minimal length (BIP62 rule 4). // (softfork safe) - SCRIPT_VERIFY_MINIMALDATA = (1U << 6) + SCRIPT_VERIFY_MINIMALDATA = (1U << 6), + + // Discourage use of NOPs reserved for upgrades (NOP1-10) + // + // Provided so that nodes can avoid accepting or mining transactions + // containing executed NOP's whose meaning may change after a soft-fork, + // thus rendering the script invalid; with this flag set executing + // discouraged NOPs fails the script. This verification flag will never be + // a mandatory flag applied to scripts in a block. NOPs that are not + // executed, e.g. within an unexecuted IF ENDIF block, are *not* rejected. + SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = (1U << 7) + }; uint256 SignatureHash(const CScript &scriptCode, const CTransaction& txTo, unsigned int nIn, int nHashType); |