diff options
Diffstat (limited to 'src/script/interpreter.cpp')
| -rw-r--r-- | src/script/interpreter.cpp | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/src/script/interpreter.cpp b/src/script/interpreter.cpp index 2f7b8e3a03..62042e8e70 100644 --- a/src/script/interpreter.cpp +++ b/src/script/interpreter.cpp @@ -3,15 +3,14 @@ // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. -#include "interpreter.h" +#include <script/interpreter.h> -#include "primitives/transaction.h" -#include "crypto/ripemd160.h" -#include "crypto/sha1.h" -#include "crypto/sha256.h" -#include "pubkey.h" -#include "script/script.h" -#include "uint256.h" +#include <crypto/ripemd160.h> +#include <crypto/sha1.h> +#include <crypto/sha256.h> +#include <pubkey.h> +#include <script/script.h> +#include <uint256.h> typedef std::vector<unsigned char> valtype; @@ -174,7 +173,13 @@ bool static IsLowDERSignature(const valtype &vchSig, ScriptError* serror) { if (!IsValidSignatureEncoding(vchSig)) { return set_error(serror, SCRIPT_ERR_SIG_DER); } + // https://bitcoin.stackexchange.com/a/12556: + // Also note that inside transaction signatures, an extra hashtype byte + // follows the actual signature data. std::vector<unsigned char> vchSigCopy(vchSig.begin(), vchSig.begin() + vchSig.size() - 1); + // If the S value is above the order of the curve divided by two, its + // complement modulo the order could have been used instead, which is + // one byte shorter when encoded correctly. if (!CPubKey::CheckLowS(vchSigCopy)) { return set_error(serror, SCRIPT_ERR_SIG_HIGH_S); } @@ -349,9 +354,6 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& { if (!(flags & SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY)) { // not enabled; treat as a NOP2 - if (flags & SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { - return set_error(serror, SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS); - } break; } @@ -391,9 +393,6 @@ bool EvalScript(std::vector<std::vector<unsigned char> >& stack, const CScript& { if (!(flags & SCRIPT_VERIFY_CHECKSEQUENCEVERIFY)) { // not enabled; treat as a NOP3 - if (flags & SCRIPT_VERIFY_DISCOURAGE_UPGRADABLE_NOPS) { - return set_error(serror, SCRIPT_ERR_DISCOURAGE_UPGRADABLE_NOPS); - } break; } |