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Add low R signing to TransactionBuilder

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This commit is contained in:
junderw 2019-04-15 17:27:28 +09:00
parent b5577607d4
commit 352e9ef0a3
No known key found for this signature in database
GPG key ID: B256185D3A971908
4 changed files with 43 additions and 2 deletions

13
ts_src/transaction_builder.ts
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@ -94,6 +94,7 @@ export class TransactionBuilder {
private __PREV_TX_SET: { [index: string]: boolean };
private __INPUTS: TxbInput[];
private __TX: Transaction;
private __USE_LOW_R: boolean;
// WARNING: maximumFeeRate is __NOT__ to be relied on,
// it's just another potential safety mechanism (safety in-depth)
@ -105,6 +106,16 @@ export class TransactionBuilder {
this.__INPUTS = [];
this.__TX = new Transaction();
this.__TX.version = 2;
this.__USE_LOW_R = false;
}
setLowR(setting?: boolean): boolean {
typeforce(typeforce.maybe(typeforce.Boolean), setting);
if (setting === undefined) {
setting = true;
}
this.__USE_LOW_R = setting;
return setting;
}
setLockTime(locktime: number): void {
@ -266,7 +277,7 @@ export class TransactionBuilder {
);
}
const signature = keyPair.sign(signatureHash);
const signature = keyPair.sign(signatureHash, this.__USE_LOW_R);
input.signatures![i] = bscript.signature.encode(signature, hashType!);
return true;
});