@ethereumjs/evm
Version:
JavaScript Ethereum Virtual Machine (EVM) implementation
49 lines • 1.92 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.precompile0b = precompile0b;
const util_1 = require("@ethereumjs/util");
const errors_ts_1 = require("../errors.js");
const evm_ts_1 = require("../evm.js");
const index_ts_1 = require("./bls12_381/index.js");
const index_ts_2 = require("./index.js");
const util_ts_1 = require("./util.js");
async function precompile0b(opts) {
const pName = (0, index_ts_2.getPrecompileName)('0b');
const bls = opts._EVM['_bls'];
// note: the gas used is constant; even if the input is incorrect.
const gasUsed = opts.common.param('bls12381G1AddGas') ?? BigInt(0);
if (!(0, util_ts_1.gasLimitCheck)(opts, gasUsed, pName)) {
return (0, evm_ts_1.OOGResult)(opts.gasLimit);
}
if (!(0, util_ts_1.equalityLengthCheck)(opts, 256, pName)) {
return (0, evm_ts_1.EVMErrorResult)(new errors_ts_1.EVMError(errors_ts_1.EVMError.errorMessages.BLS_12_381_INVALID_INPUT_LENGTH), opts.gasLimit);
}
// check if some parts of input are zero bytes.
const zeroByteRanges = [
[0, 16],
[64, 80],
[128, 144],
[192, 208],
];
if (!(0, index_ts_1.leading16ZeroBytesCheck)(opts, zeroByteRanges, pName)) {
return (0, evm_ts_1.EVMErrorResult)(new errors_ts_1.EVMError(errors_ts_1.EVMError.errorMessages.BLS_12_381_POINT_NOT_ON_CURVE), opts.gasLimit);
}
let returnValue;
try {
returnValue = bls.addG1(opts.data);
}
catch (e) {
if (opts._debug !== undefined) {
opts._debug(`${pName} failed: ${e.message}`);
}
return (0, evm_ts_1.EVMErrorResult)(e, opts.gasLimit);
}
if (opts._debug !== undefined) {
opts._debug(`${pName} return value=${(0, util_1.bytesToHex)(returnValue)}`);
}
return {
executionGasUsed: gasUsed,
returnValue,
};
}
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