feat: add method to get identities involved on the dkg generated process

Author: emmanuelm41

src/deserialize.ts

@@ -1,4 +1,4 @@
-import { TX_HASH_LEN } from './consts'
+import { IDENTITY_LEN, TX_HASH_LEN } from './consts'
 
 export const deserializeDkgRound1 = (data?: Buffer) => {
   if (!data) throw new Error('unexpected empty data')
@@ -38,6 +38,20 @@ export const deserializeDkgRound2 = (data?: Buffer) => {
   }
 }
 
+export const deserializeGetIdentities = (data?: Buffer) => {
+  if (!data) throw new Error('unexpected empty data')
+
+  const identities: Buffer[] = []
+  const elements = data.length / IDENTITY_LEN
+  for (let i = 0; i < elements; i++) {
+    identities.push(data.subarray(i * IDENTITY_LEN, IDENTITY_LEN + i * IDENTITY_LEN))
+  }
+
+  return {
+    identities,
+  }
+}
+
 export const deserializeReviewTx = (data?: Buffer) => {
   if (!data) throw new Error('unexpected empty data')
 

src/index.ts

@@ -18,7 +18,7 @@ import GenericApp, { ConstructorParams, LedgerError, Transport, processErrorResp
 import { ResponsePayload } from '@zondax/ledger-js/dist/payload'
 
 import { P2_VALUES } from './consts'
-import { deserializeDkgRound1, deserializeDkgRound2, deserializeReviewTx } from './deserialize'
+import { deserializeDkgRound1, deserializeDkgRound2, deserializeGetIdentities, deserializeReviewTx } from './deserialize'
 import { processGetIdentityResponse, processGetKeysResponse } from './helper'
 import { serializeDkgGetCommitments, serializeDkgRound1, serializeDkgRound2, serializeDkgRound3Min, serializeDkgSign } from './serialize'
 import {
@@ -31,6 +31,7 @@ import {
   ResponseDkgRound1,
   ResponseDkgRound2,
   ResponseDkgSign,
+  ResponseIdentities,
   ResponseIdentity,
   ResponseReviewTransaction,
   ResponseSign,
@@ -59,7 +60,7 @@ export default class IronfishApp extends GenericApp {
         DKG_GET_COMMITMENTS: 0x14,
         DKG_SIGN: 0x15,
         DKG_GET_KEYS: 0x16,
-        DKG_GET_NONCES: 0x17,
+        DKG_IDENTITIES: 0x17,
         DKG_GET_PUBLIC_PACKAGE: 0x18,
         DKG_BACKUP_KEYS: 0x19,
         DKG_RESTORE_KEYS: 0x1a,
@@ -233,6 +234,19 @@ export default class IronfishApp extends GenericApp {
       throw processErrorResponse(e)
     }
   }
+
+  async dkgGetIdentities(): Promise<ResponseIdentities> {
+    try {
+      let response = await this.transport.send(this.CLA, this.INS.DKG_IDENTITIES, 0, 0, Buffer.alloc(0), [LedgerError.NoErrors])
+      let data = processResponse(response)
+
+      let result = await this.getResult(data)
+      return deserializeGetIdentities(result)
+    } catch (e) {
+      throw processErrorResponse(e)
+    }
+  }
+
   async dkgRetrieveKeys(keyType: IronfishKeys, showInDevice?: boolean): Promise<KeyResponse> {
     const p1 = showInDevice ? 1 : 0
     const response = await this.transport.send(this.CLA, this.INS.DKG_GET_KEYS, p1, keyType, Buffer.alloc(0), [LedgerError.NoErrors])

src/types.ts

@@ -11,6 +11,7 @@ export interface IronfishIns extends INSGeneric {
   DKG_GET_COMMITMENTS: 0x14
   DKG_SIGN: 0x15
   DKG_GET_KEYS: 0x16
+  DKG_IDENTITIES: 0x17
   DKG_GET_PUBLIC_PACKAGE: 0x18
   DKG_BACKUP_KEYS: 0x19
   DKG_RESTORE_KEYS: 0x1a
@@ -75,3 +76,7 @@ export interface ResponseDkgBackupKeys {
 export interface ResponseReviewTransaction {
   hash: Buffer
 }
+
+export interface ResponseIdentities {
+  identities: Buffer[]
+}