From 2fcc36bbadcb8238ee292afc58c2cd460d1b69da Mon Sep 17 00:00:00 2001 From: Amir Bandeali Date: Tue, 26 Jun 2018 19:12:43 -0700 Subject: Update file structure --- packages/contracts/test/utils/signing_utils.ts | 29 ++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 packages/contracts/test/utils/signing_utils.ts (limited to 'packages/contracts/test/utils/signing_utils.ts') diff --git a/packages/contracts/test/utils/signing_utils.ts b/packages/contracts/test/utils/signing_utils.ts new file mode 100644 index 000000000..9c711c72c --- /dev/null +++ b/packages/contracts/test/utils/signing_utils.ts @@ -0,0 +1,29 @@ +import { SignatureType } from '@0xproject/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