From 0faa8b3231ddfc15723a4bdda0b6ed7aeb742bd4 Mon Sep 17 00:00:00 2001 From: Leonid Logvinov Date: Fri, 23 Nov 2018 14:03:48 +0100 Subject: Refactor contracts-core into contracts-multisig, contracts-core and contracts-test-utils --- contracts/test-utils/src/signing_utils.ts | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 contracts/test-utils/src/signing_utils.ts (limited to 'contracts/test-utils/src/signing_utils.ts') diff --git a/contracts/test-utils/src/signing_utils.ts b/contracts/test-utils/src/signing_utils.ts new file mode 100644 index 000000000..21f864bfa --- /dev/null +++ b/contracts/test-utils/src/signing_utils.ts @@ -0,0 +1,29 @@ +import { SignatureType } from '@0x/types'; +import * as ethUtil from 'ethereumjs-util'; + +export const signingUtils = { + signMessage(message: Buffer, privateKey: Buffer, signatureType: SignatureType): Buffer { + if (signatureType === SignatureType.EthSign) { + const prefixedMessage = ethUtil.hashPersonalMessage(message); + const ecSignature = ethUtil.ecsign(prefixedMessage, privateKey); + const signature = Buffer.concat([ + ethUtil.toBuffer(ecSignature.v), + ecSignature.r, + ecSignature.s, + ethUtil.toBuffer(signatureType), + ]); + return signature; + } else if (signatureType === SignatureType.EIP712) { + const ecSignature = ethUtil.ecsign(message, privateKey); + const signature = Buffer.concat([ + ethUtil.toBuffer(ecSignature.v), + ecSignature.r, + ecSignature.s, + ethUtil.toBuffer(signatureType), + ]); + return signature; + } else { + throw new Error(`${signatureType} is not a valid signature type`); + } + }, +}; -- cgit v1.2.3