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115 lines
4.3 KiB
C++
115 lines
4.3 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2016 The Bitcoin Core developers
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// Copyright (c) 2017-2018 The Bitcoin developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_SCRIPT_SCRIPTFLAGS_H
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#define BITCOIN_SCRIPT_SCRIPTFLAGS_H
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namespace bitcoin {
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/** Script verification flags */
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enum {
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SCRIPT_VERIFY_NONE = 0,
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// Evaluate P2SH subscripts (softfork safe, BIP16).
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SCRIPT_VERIFY_P2SH = (1U << 0),
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// Passing a non-strict-DER signature or one with undefined hashtype to a
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// checksig operation causes script failure. Evaluating a pubkey that is not
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// (0x04 + 64 bytes) or (0x02 or 0x03 + 32 bytes) by checksig causes script
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// failure.
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SCRIPT_VERIFY_STRICTENC = (1U << 1),
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// Passing a non-strict-DER signature to a checksig operation causes script
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// failure (softfork safe, BIP62 rule 1)
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SCRIPT_VERIFY_DERSIG = (1U << 2),
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// Passing a non-strict-DER signature or one with S > order/2 to a checksig
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// operation causes script failure
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// (softfork safe, BIP62 rule 5).
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SCRIPT_VERIFY_LOW_S = (1U << 3),
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// verify dummy stack item consumed by CHECKMULTISIG is of zero-length
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// (softfork safe, BIP62 rule 7).
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SCRIPT_VERIFY_NULLDUMMY = (1U << 4),
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// Using a non-push operator in the scriptSig causes script failure
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// (softfork safe, BIP62 rule 2).
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SCRIPT_VERIFY_SIGPUSHONLY = (1U << 5),
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// Require minimal encodings for all push operations (OP_0... OP_16,
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// OP_1NEGATE where possible, direct pushes up to 75 bytes, OP_PUSHDATA up
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// to 255 bytes, OP_PUSHDATA2 for anything larger). Evaluating any other
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// push causes the script to fail (BIP62 rule 3). In addition, whenever a
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// stack element is interpreted as a number, it must be of minimal length
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// (BIP62 rule 4).
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// (softfork safe)
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SCRIPT_VERIFY_MINIMALDATA = (1U << 6),
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// Discourage use of NOPs reserved for upgrades (NOP1-10)
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//
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// Provided so that nodes can avoid accepting or mining transactions
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// containing executed NOP's whose meaning may change after a soft-fork,
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// thus rendering the script invalid; with this flag set executing
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// discouraged NOPs fails the script. This verification flag will never be a
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// mandatory flag applied to scripts in a block. NOPs that are not executed,
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// e.g. within an unexecuted IF ENDIF block, are *not* rejected.
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SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS = (1U << 7),
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// Require that only a single stack element remains after evaluation. This
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// changes the success criterion from "At least one stack element must
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// remain, and when interpreted as a boolean, it must be true" to "Exactly
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// one stack element must remain, and when interpreted as a boolean, it must
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// be true".
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// (softfork safe, BIP62 rule 6)
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// Note: CLEANSTACK should never be used without P2SH or WITNESS.
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SCRIPT_VERIFY_CLEANSTACK = (1U << 8),
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// Verify CHECKLOCKTIMEVERIFY
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//
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// See BIP65 for details.
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SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY = (1U << 9),
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// support CHECKSEQUENCEVERIFY opcode
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//
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// See BIP112 for details
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SCRIPT_VERIFY_CHECKSEQUENCEVERIFY = (1U << 10),
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// Require the argument of OP_IF/NOTIF to be exactly 0x01 or empty vector
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//
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SCRIPT_VERIFY_MINIMALIF = (1U << 13),
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// Signature(s) must be empty vector if an CHECK(MULTI)SIG operation failed
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//
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SCRIPT_VERIFY_NULLFAIL = (1U << 14),
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// Public keys in scripts must be compressed
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//
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SCRIPT_VERIFY_COMPRESSED_PUBKEYTYPE = (1U << 15),
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// Do we accept signature using SIGHASH_FORKID
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//
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SCRIPT_ENABLE_SIGHASH_FORKID = (1U << 16),
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// Do we accept activate replay protection using a different fork id.
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//
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SCRIPT_ENABLE_REPLAY_PROTECTION = (1U << 17),
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// Is OP_CHECKDATASIG and variant are enabled.
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//
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SCRIPT_ENABLE_CHECKDATASIG = (1U << 18),
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// Are Schnorr signatures enabled for OP_CHECK(DATA)SIG(VERIFY) and
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// 65-byte signatures banned for OP_CHECKMULTISIG(VERIFY)?
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//
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SCRIPT_ENABLE_SCHNORR = (1U << 19),
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// Allows the recovery of coins sent to p2sh segwit addresses
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SCRIPT_ALLOW_SEGWIT_RECOVERY = (1U << 20),
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};
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} // end namespace bitcoin
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#endif // BITCOIN_SCRIPT_SCRIPTFLAGS_H
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