chore(abstract-utxo): function to get pub key

TICKET: BTC-2118

Author: christopher-fong

modules/abstract-utxo/package.json

@@ -45,6 +45,7 @@
     "@bitgo/blockapis": "^1.10.19",
     "@bitgo/sdk-api": "^1.64.4",
     "@bitgo/sdk-core": "^35.6.0",
+    "@bitgo/statics": "^55.0.0",
     "@bitgo/unspents": "^0.48.4",
     "@bitgo/utxo-core": "^1.12.0",
     "@bitgo/utxo-lib": "^11.6.2",

modules/abstract-utxo/src/transaction/fixedScript/explainTransaction.ts

@@ -5,7 +5,7 @@ import * as utxocore from '@bitgo/utxo-core';
 
 import { Output, TransactionExplanation, FixedScriptWalletOutput } from '../../abstractUtxoCoin';
 import { toExtendedAddressFormat } from '../recipient';
-import { Networks } from '../../../../statics/src/networks';
+import { getPayGoVerificationPubkey } from '../getPayGoVerificationPubkey';
 
 export type ChangeAddressInfo = { address: string; chain: number; index: number };
 
@@ -198,31 +198,33 @@ export function explainPsbt<TNumber extends number | bigint, Tx extends bitgo.Ut
    * Extract PayGo address proof information from the PSBT if present
    * @returns Information about the PayGo proof, including the output index and address
    */
-  function getPayGoVerificationInfo():
-    | { outputIndex: number | undefined; verificationPubkey: string | undefined }
-    | undefined {
+  function getPayGoVerificationInfo(): { outputIndex: number; verificationPubkey: string } | undefined {
     let outputIndex: number | undefined = undefined;
     let address: string | undefined = undefined;
-    const verificationPubkey = Networks.test.bitcoin.paygoAddressAttestationPubkey;
     // Check if this PSBT has any PayGo address proofs
     if (!utxocore.paygo.psbtOutputIncludesPaygoAddressProof(psbt)) {
       return undefined;
     }
 
+    // This pulls the pubkey depending on given network
+    const verificationPubkey = getPayGoVerificationPubkey(network);
+
     // find which output index that contains the PayGo proof
     outputIndex = utxocore.paygo.getPayGoAddressProofOutputIndex(psbt);
-    if (outputIndex !== undefined) {
-      const output = txOutputs[outputIndex];
-      address = utxolib.address.fromOutputScript(output.script, network);
-      if (!address) {
-        return undefined;
-      }
+    if (!outputIndex || !verificationPubkey) {
+      return undefined;
     }
+    const output = txOutputs[outputIndex];
+    address = utxolib.address.fromOutputScript(output.script, network);
+    if (!address) {
+      return undefined;
+    }
+
     return { outputIndex, verificationPubkey };
   }
 
   const payGoVerificationInfo = getPayGoVerificationInfo();
-  if (payGoVerificationInfo && payGoVerificationInfo.outputIndex && payGoVerificationInfo.verificationPubkey) {
+  if (payGoVerificationInfo) {
     utxocore.paygo.verifyPayGoAddressProof(
       psbt,
       payGoVerificationInfo.outputIndex,

modules/abstract-utxo/src/transaction/fixedScript/verifyTransaction.ts

@@ -3,7 +3,6 @@ import _ from 'lodash';
 import BigNumber from 'bignumber.js';
 import { BitGoBase } from '@bitgo/sdk-core';
 import * as utxolib from '@bitgo/utxo-lib';
-import * as utxocore from '@bitgo/utxo-core';
 
 import { AbstractUtxoCoin, Output, ParsedTransaction, VerifyTransactionOptions } from '../../abstractUtxoCoin';
 import { verifyCustomChangeKeySignatures, verifyKeySignature, verifyUserPublicKey } from '../../verifyKey';

modules/abstract-utxo/src/transaction/getPayGoVerificationPubkey.ts

@@ -0,0 +1,18 @@
+import * as utxolib from '@bitgo/utxo-lib';
+import { Networks } from '@bitgo/statics';
+
+/**
+ * We want to return the verification pubkey from our statics that has our
+ * verification pubkey.
+ * @param network
+ * @returns
+ */
+export function getPayGoVerificationPubkey(network: utxolib.Network): string | undefined {
+  const networkName = utxolib.getNetworkName(network);
+  switch (networkName) {
+    case 'testnet':
+      return Networks.test.bitcoin.paygoAddressAttestationPubkey;
+    default:
+      return undefined;
+  }
+}