diff --git a/modules/sdk-lib-mpc/.mocharc.js b/modules/sdk-lib-mpc/.mocharc.js
index 38ad92e834..bc895dd373 100644
--- a/modules/sdk-lib-mpc/.mocharc.js
+++ b/modules/sdk-lib-mpc/.mocharc.js
@@ -2,7 +2,7 @@
 
 module.exports = {
   require: 'ts-node/register',
-  timeout: '20000',
+  timeout: '200000',
   reporter: 'min',
   'reporter-option': ['cdn=true', 'json=false'],
   exit: true,
diff --git a/modules/sdk-lib-mpc/package.json b/modules/sdk-lib-mpc/package.json
index 82603f95be..f9d02cf00a 100644
--- a/modules/sdk-lib-mpc/package.json
+++ b/modules/sdk-lib-mpc/package.json
@@ -43,7 +43,7 @@
     "@wasmer/wasi": "^1.2.2",
     "bigint-crypto-utils": "3.1.4",
     "bigint-mod-arith": "3.1.2",
-    "cbor": "^9.0.1",
+    "cbor-x": "1.5.8",
     "libsodium-wrappers-sumo": "^0.7.9",
     "openpgp": "5.10.1",
     "paillier-bigint": "3.3.0"
diff --git a/modules/sdk-lib-mpc/test/unit/tss/ecdsa/dklsDkg.ts b/modules/sdk-lib-mpc/test/unit/tss/ecdsa/dklsDkg.ts
index 1ab7946fd9..d1d5b6fdfb 100644
--- a/modules/sdk-lib-mpc/test/unit/tss/ecdsa/dklsDkg.ts
+++ b/modules/sdk-lib-mpc/test/unit/tss/ecdsa/dklsDkg.ts
@@ -3,9 +3,14 @@ import {
   decryptAndVerifyIncomingMessages,
   encryptAndAuthOutgoingMessages,
 } from '../../../../src/tss/ecdsa-dkls/commsLayer';
+import { bigIntToBufferBE, Secp256k1Curve } from '../../../../src';
+import { Ecdsa } from '@bitgo/sdk-core';
 import { PartyGpgKey, deserializeMessages, serializeMessages } from '../../../../src/tss/ecdsa-dkls/types';
 import * as openpgp from 'openpgp';
-import { decode } from 'cbor';
+import { decode, encode } from 'cbor-x';
+
+import * as secp256k1 from 'secp256k1';
+import { KeygenSession, Keyshare, Message, SignSession } from '@silencelaboratories/dkls-wasm-ll-node';
 
 describe('DKLS Dkg 2x3', function () {
   it(`should create key shares`, async function () {
@@ -75,7 +80,151 @@ describe('DKLS Dkg 2x3', function () {
       p2pMessages: [],
       broadcastMessages: bitgoRound4Messages.broadcastMessages.concat(userRound4Messages.broadcastMessages),
     });
-    const backupKeyShare = decode(backup.getKeyShare());
+    const MPC = new Ecdsa();
+    const sec256k1 = new Secp256k1Curve();
+    const [A, B, C] = await Promise.all([MPC.keyShare(1, 2, 3), MPC.keyShare(2, 2, 3), MPC.keyShare(3, 2, 3)]);
+    const aKeyCombine = MPC.keyCombine(A.pShare, [B.nShares[1], C.nShares[1]]);
+    const bKeyCombine = MPC.keyCombine(B.pShare, [A.nShares[2], C.nShares[2]]);
+    const cKeyCombine = MPC.keyCombine(C.pShare, [A.nShares[3], B.nShares[3]]);
+    const x_i_list = [new Array(32).fill(0), new Array(32).fill(0), new Array(32).fill(0)];
+    x_i_list[0][31] = 1;
+    x_i_list[1][31] = 2;
+    x_i_list[2][31] = 3;
+    const aPub = bigIntToBufferBE(sec256k1.basePointMult(BigInt('0x' + aKeyCombine.xShare.x)));
+    const bPub = bigIntToBufferBE(sec256k1.basePointMult(BigInt('0x' + bKeyCombine.xShare.x)));
+    const cPub = bigIntToBufferBE(sec256k1.basePointMult(BigInt('0x' + cKeyCombine.xShare.x)));
+    const keyShare = backup.getKeyShare();
+    const backupKeyShare = decode(keyShare);
+    const aKeyShare = {
+      total_parties: 3,
+      threshold: 2,
+      rank_list: [0, 0, 0],
+      party_id: 0,
+      public_key: Array.from(Buffer.from(aKeyCombine.xShare.y, 'hex')),
+      root_chain_code: Array.from(Buffer.from(aKeyCombine.xShare.chaincode, 'hex')),
+      final_session_id: Array(32).fill(0),
+      seed_ot_receivers: [Array(32832).fill(0), Array(32832).fill(0)],
+      seed_ot_senders: [Array(32768).fill(0), Array(32768).fill(0)],
+      sent_seed_list: [Array(32).fill(0)],
+      rec_seed_list: [Array(32).fill(0)],
+      s_i: Array.from(Buffer.from(aKeyCombine.xShare.x, 'hex')),
+      big_s_list: [Array.from(aPub), Array.from(bPub), Array.from(cPub)],
+      x_i_list: x_i_list,
+    };
+    const bKeyShare = {
+      total_parties: 3,
+      threshold: 2,
+      rank_list: [0, 0, 0],
+      party_id: 1,
+      public_key: Array.from(Buffer.from(bKeyCombine.xShare.y, 'hex')),
+      root_chain_code: Array.from(Buffer.from(bKeyCombine.xShare.chaincode, 'hex')),
+      final_session_id: Array(32).fill(0),
+      seed_ot_receivers: [Array(32832).fill(0), Array(32832).fill(0)],
+      seed_ot_senders: [Array(32768).fill(0), Array(32768).fill(0)],
+      sent_seed_list: [Array(32).fill(0)],
+      rec_seed_list: [Array(32).fill(0)],
+      s_i: Array.from(Buffer.from(bKeyCombine.xShare.x, 'hex')),
+      big_s_list: [Array.from(aPub), Array.from(bPub), Array.from(cPub)],
+      x_i_list: x_i_list,
+    };
+    const cKeyShare = {
+      total_parties: 3,
+      threshold: 2,
+      rank_list: [0, 0, 0],
+      party_id: 2,
+      public_key: Array.from(Buffer.from(cKeyCombine.xShare.y, 'hex')),
+      root_chain_code: Array.from(Buffer.from(cKeyCombine.xShare.chaincode, 'hex')),
+      final_session_id: Array(32).fill(0),
+      seed_ot_receivers: [Array(32832).fill(0), Array(32832).fill(0)],
+      seed_ot_senders: [Array(32768).fill(0), Array(32768).fill(0)],
+      sent_seed_list: [Array(32).fill(0)],
+      rec_seed_list: [Array(32).fill(0)],
+      s_i: Array.from(Buffer.from(cKeyCombine.xShare.x, 'hex')),
+      big_s_list: [Array.from(aPub), Array.from(bPub), Array.from(cPub)],
+      x_i_list: x_i_list,
+    };
+    console.log(backupKeyShare.public_key);
+    const sLAKeyShare = Keyshare.fromBytes(encode(aKeyShare));
+    const sLBKeyShare = Keyshare.fromBytes(encode(bKeyShare));
+    const sLCKeyShare = Keyshare.fromBytes(encode(cKeyShare));
+    console.log(sLAKeyShare.publicKey);
+    console.log(sLBKeyShare.publicKey);
+    console.log(sLCKeyShare.publicKey);
+
+    function key_rotation(oldshares: Keyshare[]) {
+      return oldshares.map((p) => KeygenSession.initKeyRotation(p));
+    }
+
+    function filterMessages(msgs: Message[], party: number): Message[] {
+      return msgs.filter((m) => m.from_id != party).map((m) => m.clone());
+    }
+
+    function selectMessages(msgs: Message[], party: number): Message[] {
+      return msgs.filter((m) => m.to_id == party).map((m) => m.clone());
+    }
+
+    function dkg_inner(parties: KeygenSession[]): Keyshare[] {
+      const msg1: Message[] = parties.map((p) => p.createFirstMessage());
+      const msg2: Message[] = parties.flatMap((p, pid) => p.handleMessages(filterMessages(msg1, pid)));
+
+      // after handling batch msg1, all parties calculate final session id,
+      // and not we have to calculate commitments for chain_code_sid
+      const commitments = parties.map((p) => p.calculateChainCodeCommitment());
+
+      const msg3: Message[] = parties.flatMap((p, pid) => p.handleMessages(selectMessages(msg2, pid)));
+      const msg4: Message[] = parties.flatMap((p, pid) => p.handleMessages(selectMessages(msg3, pid), commitments));
+
+      parties.flatMap((p, pid) => p.handleMessages(filterMessages(msg4, pid)));
+
+      return parties.map((p) => p.keyshare()); // deallocates session object
+    }
+    const shares = [sLAKeyShare, sLBKeyShare, sLCKeyShare];
+    const rotation_parties = key_rotation(shares);
+    const new_shares = dkg_inner(rotation_parties);
+
+    new_shares.forEach((s, i) => s.finishKeyRotation(shares[i]));
+    function dsg(shares: Keyshare[], t: number, messageHash: Uint8Array) {
+      const parties: SignSession[] = [];
+
+      // for simplicity we always use the first T shares.
+      for (let i = 0; i < t; i++) {
+        parties.push(new SignSession(shares[i], 'm'));
+      }
+
+      const msg1: Message[] = parties.map((p) => p.createFirstMessage());
+      const msg2: Message[] = parties.flatMap((p, pid) => p.handleMessages(filterMessages(msg1, pid)));
+      const msg3: Message[] = parties.flatMap((p, pid) => p.handleMessages(selectMessages(msg2, pid)));
+
+      parties.flatMap((p, pid) => p.handleMessages(selectMessages(msg3, pid)));
+
+      const msg4: Message[] = parties.map((p) => p.lastMessage(messageHash));
+
+      const signs = parties.map((p, pid) => p.combine(filterMessages(msg4, pid)));
+
+      return signs;
+    }
+    const messageHash = new Uint8Array(32);
+    const sig = dsg(new_shares, 2, messageHash);
+    const pub1 = secp256k1.ecdsaRecover(
+      Buffer.concat([Buffer.from(sig[0][0]), Buffer.from(sig[0][1])]),
+      0,
+      messageHash,
+      true
+    );
+    const pub2 = secp256k1.ecdsaRecover(
+      Buffer.concat([Buffer.from(sig[0][0]), Buffer.from(sig[0][1])]),
+      1,
+      messageHash,
+      true
+    );
+    console.log(pub1);
+    console.log(pub2);
+    (
+      (pub1.every((p) => Buffer.from(aKeyCombine.xShare.y, 'hex').includes(p)) &&
+        Buffer.from(aKeyCombine.xShare.y, 'hex').every((p) => pub1.includes(p))) ||
+      (pub2.every((p) => Buffer.from(aKeyCombine.xShare.y, 'hex').includes(p)) &&
+        Buffer.from(aKeyCombine.xShare.y, 'hex').every((p) => pub2.includes(p)))
+    ).should.equal(true);
     decode(user.getKeyShare()).public_key.should.deepEqual(backupKeyShare.public_key);
     decode(bitgo.getKeyShare()).public_key.should.deepEqual(backupKeyShare.public_key);
   });
diff --git a/yarn.lock b/yarn.lock
index b6c5f5e686..97e80b8385 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1062,6 +1062,36 @@
   resolved "https://registry.npmjs.org/@brandonblack/musig/-/musig-0.0.1-alpha.1.tgz"
   integrity sha512-00RbByQG85lSzrkDjCblzrUc2n1LJAPPrEMHS4oMg+QckE0kzjd26JytT6yx6tNU2+aOXfK7O4kGW/sKVL67cw==
 
+"@cbor-extract/cbor-extract-darwin-arm64@2.2.0":
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/@cbor-extract/cbor-extract-darwin-arm64/-/cbor-extract-darwin-arm64-2.2.0.tgz#8d65cb861a99622e1b4a268e2d522d2ec6137338"
+  integrity sha512-P7swiOAdF7aSi0H+tHtHtr6zrpF3aAq/W9FXx5HektRvLTM2O89xCyXF3pk7pLc7QpaY7AoaE8UowVf9QBdh3w==
+
+"@cbor-extract/cbor-extract-darwin-x64@2.2.0":
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/@cbor-extract/cbor-extract-darwin-x64/-/cbor-extract-darwin-x64-2.2.0.tgz#9fbec199c888c5ec485a1839f4fad0485ab6c40a"
+  integrity sha512-1liF6fgowph0JxBbYnAS7ZlqNYLf000Qnj4KjqPNW4GViKrEql2MgZnAsExhY9LSy8dnvA4C0qHEBgPrll0z0w==
+
+"@cbor-extract/cbor-extract-linux-arm64@2.2.0":
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/@cbor-extract/cbor-extract-linux-arm64/-/cbor-extract-linux-arm64-2.2.0.tgz#bf77e0db4a1d2200a5aa072e02210d5043e953ae"
+  integrity sha512-rQvhNmDuhjTVXSPFLolmQ47/ydGOFXtbR7+wgkSY0bdOxCFept1hvg59uiLPT2fVDuJFuEy16EImo5tE2x3RsQ==
+
+"@cbor-extract/cbor-extract-linux-arm@2.2.0":
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/@cbor-extract/cbor-extract-linux-arm/-/cbor-extract-linux-arm-2.2.0.tgz#491335037eb8533ed8e21b139c59f6df04e39709"
+  integrity sha512-QeBcBXk964zOytiedMPQNZr7sg0TNavZeuUCD6ON4vEOU/25+pLhNN6EDIKJ9VLTKaZ7K7EaAriyYQ1NQ05s/Q==
+
+"@cbor-extract/cbor-extract-linux-x64@2.2.0":
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/@cbor-extract/cbor-extract-linux-x64/-/cbor-extract-linux-x64-2.2.0.tgz#672574485ccd24759bf8fb8eab9dbca517d35b97"
+  integrity sha512-cWLAWtT3kNLHSvP4RKDzSTX9o0wvQEEAj4SKvhWuOVZxiDAeQazr9A+PSiRILK1VYMLeDml89ohxCnUNQNQNCw==
+
+"@cbor-extract/cbor-extract-win32-x64@2.2.0":
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/@cbor-extract/cbor-extract-win32-x64/-/cbor-extract-win32-x64-2.2.0.tgz#4b3f07af047f984c082de34b116e765cb9af975f"
+  integrity sha512-l2M+Z8DO2vbvADOBNLbbh9y5ST1RY5sqkWOg/58GkUPBYou/cuNZ68SGQ644f1CvZ8kcOxyZtw06+dxWHIoN/w==
+
 "@celo/base@2.3.0":
   version "2.3.0"
   resolved "https://registry.npmjs.org/@celo/base/-/base-2.3.0.tgz"
@@ -7576,6 +7606,27 @@ catharsis@^0.9.0:
   dependencies:
     lodash "^4.17.15"
 
+cbor-extract@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/cbor-extract/-/cbor-extract-2.2.0.tgz#cee78e630cbeae3918d1e2e58e0cebaf3a3be840"
+  integrity sha512-Ig1zM66BjLfTXpNgKpvBePq271BPOvu8MR0Jl080yG7Jsl+wAZunfrwiwA+9ruzm/WEdIV5QF/bjDZTqyAIVHA==
+  dependencies:
+    node-gyp-build-optional-packages "5.1.1"
+  optionalDependencies:
+    "@cbor-extract/cbor-extract-darwin-arm64" "2.2.0"
+    "@cbor-extract/cbor-extract-darwin-x64" "2.2.0"
+    "@cbor-extract/cbor-extract-linux-arm" "2.2.0"
+    "@cbor-extract/cbor-extract-linux-arm64" "2.2.0"
+    "@cbor-extract/cbor-extract-linux-x64" "2.2.0"
+    "@cbor-extract/cbor-extract-win32-x64" "2.2.0"
+
+cbor-x@1.5.8:
+  version "1.5.8"
+  resolved "https://registry.yarnpkg.com/cbor-x/-/cbor-x-1.5.8.tgz#3bd7bc61120692b5031d7f782a39b64f51f1d825"
+  integrity sha512-gc3bHBsvG6GClCY6c0/iip+ghlqizkVp+TtaL927lwvP4VP9xBdi1HmqPR5uj/Mj/0TOlngMkIYa25wKg+VNrQ==
+  optionalDependencies:
+    cbor-extract "^2.2.0"
+
 cbor@^9.0.1:
   version "9.0.1"
   resolved "https://registry.yarnpkg.com/cbor/-/cbor-9.0.1.tgz#b16e393d4948d44758cd54ac6151379d443b37ae"
@@ -8989,6 +9040,11 @@ detect-indent@^6.0.0:
   resolved "https://registry.npmjs.org/detect-indent/-/detect-indent-6.1.0.tgz"
   integrity sha512-reYkTUJAZb9gUuZ2RvVCNhVHdg62RHnJ7WJl8ftMi4diZ6NWlciOzQN88pUhSELEwflJht4oQDv0F0BMlwaYtA==
 
+detect-libc@^2.0.1:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/detect-libc/-/detect-libc-2.0.2.tgz#8ccf2ba9315350e1241b88d0ac3b0e1fbd99605d"
+  integrity sha512-UX6sGumvvqSaXgdKGUsgZWqcUyIXZ/vZTrlRT/iobiKhGL0zL4d3osHj3uqllWJK+i+sixDS/3COVEOFbupFyw==
+
 detect-node@^2.0.4:
   version "2.1.0"
   resolved "https://registry.npmjs.org/detect-node/-/detect-node-2.1.0.tgz"
@@ -14336,6 +14392,13 @@ node-forge@^1:
   resolved "https://registry.npmjs.org/node-forge/-/node-forge-1.3.1.tgz"
   integrity sha512-dPEtOeMvF9VMcYV/1Wb8CPoVAXtp6MKMlcbAt4ddqmGqUJ6fQZFXkNZNkNlfevtNkGtaSoXf/vNNNSvgrdXwtA==
 
+node-gyp-build-optional-packages@5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/node-gyp-build-optional-packages/-/node-gyp-build-optional-packages-5.1.1.tgz#52b143b9dd77b7669073cbfe39e3f4118bfc603c"
+  integrity sha512-+P72GAjVAbTxjjwUmwjVrqrdZROD4nf8KgpBoDxqXXTiYZZt/ud60dE5yvCSr9lRO8e8yv6kgJIC0K0PfZFVQw==
+  dependencies:
+    detect-libc "^2.0.1"
+
 node-gyp-build@^4.2.0, node-gyp-build@^4.3.0:
   version "4.6.0"
   resolved "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-4.6.0.tgz"