From 620a5366b114114c57a161e5fd453cba746d6120 Mon Sep 17 00:00:00 2001
From: Kyle Peacock <kylpeacock@gmail.com>
Date: Thu, 8 Dec 2022 16:18:31 -0800
Subject: [PATCH] feat: separate secp256k1 library (#663)

* removes browserify

* platform node for bundle

* disable secp size check until after package is on main for CI

* Update packages/identity/src/index.ts

* removes stats.html

Co-authored-by: Eric Swanson <64809312+ericswanson-dfinity@users.noreply.github.com>
---
 docs/generated/changelog.html                 |    4 +
 e2e/node/basic/identity.test.ts               |    2 +-
 package-lock.json                             |  509 +----
 package.json                                  |    1 +
 packages/agent/package.json                   |    1 -
 packages/identity-secp256k1/.gitignore        |    3 +
 packages/identity-secp256k1/LICENSE           |  201 ++
 packages/identity-secp256k1/README.md         |   49 +
 packages/identity-secp256k1/jest.config.ts    |   18 +
 packages/identity-secp256k1/package-lock.json | 1803 +++++++++++++++++
 packages/identity-secp256k1/package.json      |   26 +
 .../src}/__snapshots__/secp256k1.test.ts.snap |    0
 packages/identity-secp256k1/src/buffer.ts     |   15 +
 packages/identity-secp256k1/src/der.test.ts   |  163 ++
 packages/identity-secp256k1/src/der.ts        |  166 ++
 .../src}/hdkey.ts                             |    4 +-
 packages/identity-secp256k1/src/index.ts      |    1 +
 .../src}/secp256k1.test.ts                    |    0
 .../src}/secp256k1.ts                         |    2 +-
 packages/identity-secp256k1/test-setup.ts     |   11 +
 packages/identity-secp256k1/tsconfig-cjs.json |    7 +
 packages/identity-secp256k1/tsconfig.json     |   26 +
 packages/identity-secp256k1/types/hdkey.d.ts  |    1 +
 packages/identity/meta.json                   | 1132 +++++++++++
 packages/identity/package.json                |   13 +-
 packages/identity/src/index.ts                |   12 +-
 packages/identity/tsconfig.json               |    9 +-
 27 files changed, 3707 insertions(+), 472 deletions(-)
 create mode 100644 packages/identity-secp256k1/.gitignore
 create mode 100644 packages/identity-secp256k1/LICENSE
 create mode 100644 packages/identity-secp256k1/README.md
 create mode 100644 packages/identity-secp256k1/jest.config.ts
 create mode 100644 packages/identity-secp256k1/package-lock.json
 create mode 100644 packages/identity-secp256k1/package.json
 rename packages/{identity/src/identity => identity-secp256k1/src}/__snapshots__/secp256k1.test.ts.snap (100%)
 create mode 100644 packages/identity-secp256k1/src/buffer.ts
 create mode 100644 packages/identity-secp256k1/src/der.test.ts
 create mode 100644 packages/identity-secp256k1/src/der.ts
 rename packages/{identity/src/identity => identity-secp256k1/src}/hdkey.ts (98%)
 create mode 100644 packages/identity-secp256k1/src/index.ts
 rename packages/{identity/src/identity => identity-secp256k1/src}/secp256k1.test.ts (100%)
 rename packages/{identity/src/identity => identity-secp256k1/src}/secp256k1.ts (99%)
 create mode 100644 packages/identity-secp256k1/test-setup.ts
 create mode 100644 packages/identity-secp256k1/tsconfig-cjs.json
 create mode 100644 packages/identity-secp256k1/tsconfig.json
 create mode 100644 packages/identity-secp256k1/types/hdkey.d.ts
 create mode 100644 packages/identity/meta.json

diff --git a/docs/generated/changelog.html b/docs/generated/changelog.html
index 037ff888d..c28a22b44 100644
--- a/docs/generated/changelog.html
+++ b/docs/generated/changelog.html
@@ -12,6 +12,10 @@ <h1>Agent-JS Changelog</h1>
     <section>
       <h2>Version x.x.x</h2>
       <ul>
+        <li>
+          <em>Breaking change:</em> Moves Secp256k1KeyIdentity to its own package.
+          <pre>@dfinity/identity-secp256k1</pre>
+        </li>
         <li>
           <em>Breaking change:</em> Deprecates
           <pre>@dfinity/authentication</pre>
diff --git a/e2e/node/basic/identity.test.ts b/e2e/node/basic/identity.test.ts
index e549ec52a..964abdf29 100644
--- a/e2e/node/basic/identity.test.ts
+++ b/e2e/node/basic/identity.test.ts
@@ -9,9 +9,9 @@ import {
   DelegationChain,
   DelegationIdentity,
   Ed25519KeyIdentity,
-  Secp256k1KeyIdentity,
   ECDSAKeyIdentity,
 } from '@dfinity/identity';
+import { Secp256k1KeyIdentity } from '@dfinity/identity-secp256k1';
 import agent from '../utils/agent';
 import identityCanister from '../canisters/identity';
 
diff --git a/package-lock.json b/package-lock.json
index e574a8d1a..29dce904e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -45,6 +45,7 @@
           "packages/identity",
           "packages/auth-client",
           "packages/assets",
+          "packages/identity-secp256k1",
           "e2e/node",
           "e2e/browser",
           "demos/ledgerhq",
@@ -1923,7 +1924,7 @@
       "link": true
     },
     "node_modules/@dfinity/authentication": {
-      "resolved": "packages/authentication",
+      "resolved": "packages/secp256k1",
       "link": true
     },
     "node_modules/@dfinity/bls-verify": {
@@ -1938,6 +1939,10 @@
       "resolved": "packages/identity",
       "link": true
     },
+    "node_modules/@dfinity/identity-secp256k1": {
+      "resolved": "packages/identity-secp256k1",
+      "link": true
+    },
     "node_modules/@dfinity/principal": {
       "resolved": "packages/principal",
       "link": true
@@ -5477,15 +5482,6 @@
         "@types/node": "*"
       }
     },
-    "node_modules/@types/hdkey": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/@types/hdkey/-/hdkey-2.0.1.tgz",
-      "integrity": "sha512-4s6jhP0BT3sWBaRo0BfA3BpFllQvuRlXUzIqnuvSNmPhmMCZYjhrDe31nJb8kJLc0ZVdqj9Ep9eH2RGBNCK9Sw==",
-      "dev": true,
-      "dependencies": {
-        "@types/node": "*"
-      }
-    },
     "node_modules/@types/html-minifier-terser": {
       "version": "6.1.0",
       "resolved": "https://registry.npmjs.org/@types/html-minifier-terser/-/html-minifier-terser-6.1.0.tgz",
@@ -7076,102 +7072,6 @@
       "integrity": "sha512-9o5UecI3GhkpM6DrXr69PblIuWxPKk9Y0jHBRhdocZ2y7YECBFCsHm79Pr3OyR2AvjhDkabFJaDJMYRazHgsow==",
       "dev": true
     },
-    "node_modules/browserify-aes": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.2.0.tgz",
-      "integrity": "sha512-+7CHXqGuspUn/Sl5aO7Ea0xWGAtETPXNSAjHo48JfLdPWcMng33Xe4znFvQweqc/uzk5zSOI3H52CYnjCfb5hA==",
-      "peer": true,
-      "dependencies": {
-        "buffer-xor": "^1.0.3",
-        "cipher-base": "^1.0.0",
-        "create-hash": "^1.1.0",
-        "evp_bytestokey": "^1.0.3",
-        "inherits": "^2.0.1",
-        "safe-buffer": "^5.0.1"
-      }
-    },
-    "node_modules/browserify-cipher": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/browserify-cipher/-/browserify-cipher-1.0.1.tgz",
-      "integrity": "sha512-sPhkz0ARKbf4rRQt2hTpAHqn47X3llLkUGn+xEJzLjwY8LRs2p0v7ljvI5EyoRO/mexrNunNECisZs+gw2zz1w==",
-      "peer": true,
-      "dependencies": {
-        "browserify-aes": "^1.0.4",
-        "browserify-des": "^1.0.0",
-        "evp_bytestokey": "^1.0.0"
-      }
-    },
-    "node_modules/browserify-des": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/browserify-des/-/browserify-des-1.0.2.tgz",
-      "integrity": "sha512-BioO1xf3hFwz4kc6iBhI3ieDFompMhrMlnDFC4/0/vd5MokpuAc3R+LYbwTA9A5Yc9pq9UYPqffKpW2ObuwX5A==",
-      "peer": true,
-      "dependencies": {
-        "cipher-base": "^1.0.1",
-        "des.js": "^1.0.0",
-        "inherits": "^2.0.1",
-        "safe-buffer": "^5.1.2"
-      }
-    },
-    "node_modules/browserify-rsa": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/browserify-rsa/-/browserify-rsa-4.1.0.tgz",
-      "integrity": "sha512-AdEER0Hkspgno2aR97SAf6vi0y0k8NuOpGnVH3O99rcA5Q6sh8QxcngtHuJ6uXwnfAXNM4Gn1Gb7/MV1+Ymbog==",
-      "peer": true,
-      "dependencies": {
-        "bn.js": "^5.0.0",
-        "randombytes": "^2.0.1"
-      }
-    },
-    "node_modules/browserify-rsa/node_modules/bn.js": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-5.2.1.tgz",
-      "integrity": "sha512-eXRvHzWyYPBuB4NBy0cmYQjGitUrtqwbvlzP3G6VFnNRbsZQIxQ10PbKKHt8gZ/HW/D/747aDl+QkDqg3KQLMQ==",
-      "peer": true
-    },
-    "node_modules/browserify-sign": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/browserify-sign/-/browserify-sign-4.2.1.tgz",
-      "integrity": "sha512-/vrA5fguVAKKAVTNJjgSm1tRQDHUU6DbwO9IROu/0WAzC8PKhucDSh18J0RMvVeHAn5puMd+QHC2erPRNf8lmg==",
-      "peer": true,
-      "dependencies": {
-        "bn.js": "^5.1.1",
-        "browserify-rsa": "^4.0.1",
-        "create-hash": "^1.2.0",
-        "create-hmac": "^1.1.7",
-        "elliptic": "^6.5.3",
-        "inherits": "^2.0.4",
-        "parse-asn1": "^5.1.5",
-        "readable-stream": "^3.6.0",
-        "safe-buffer": "^5.2.0"
-      }
-    },
-    "node_modules/browserify-sign/node_modules/bn.js": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/bn.js/-/bn.js-5.2.1.tgz",
-      "integrity": "sha512-eXRvHzWyYPBuB4NBy0cmYQjGitUrtqwbvlzP3G6VFnNRbsZQIxQ10PbKKHt8gZ/HW/D/747aDl+QkDqg3KQLMQ==",
-      "peer": true
-    },
-    "node_modules/browserify-sign/node_modules/safe-buffer": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.2.1.tgz",
-      "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ==",
-      "funding": [
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
-        {
-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
-        {
-          "type": "consulting",
-          "url": "https://feross.org/support"
-        }
-      ],
-      "peer": true
-    },
     "node_modules/browserslist": {
       "version": "4.21.3",
       "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.21.3.tgz",
@@ -7274,12 +7174,6 @@
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.2.tgz",
       "integrity": "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ=="
     },
-    "node_modules/buffer-xor": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/buffer-xor/-/buffer-xor-1.0.3.tgz",
-      "integrity": "sha512-571s0T7nZWK6vB67HI5dyUF7wXiNcfaPPPTl6zYCNApANjIvYJTg7hlud/+cJpdAhS7dVzqMLmfhfHR3rAcOjQ==",
-      "peer": true
-    },
     "node_modules/builtin-modules": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-1.1.1.tgz",
@@ -8057,16 +7951,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/create-ecdh": {
-      "version": "4.0.4",
-      "resolved": "https://registry.npmjs.org/create-ecdh/-/create-ecdh-4.0.4.tgz",
-      "integrity": "sha512-mf+TCx8wWc9VpuxfP2ht0iSISLZnt0JgWlrOKZiNqyUZWnjIaCIVNQArMHnCZKfEYRg6IM7A+NeJoN8gf/Ws0A==",
-      "peer": true,
-      "dependencies": {
-        "bn.js": "^4.1.0",
-        "elliptic": "^6.5.3"
-      }
-    },
     "node_modules/create-hash": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/create-hash/-/create-hash-1.2.0.tgz",
@@ -8125,28 +8009,6 @@
         "node": "*"
       }
     },
-    "node_modules/crypto-browserify": {
-      "version": "3.12.0",
-      "resolved": "https://registry.npmjs.org/crypto-browserify/-/crypto-browserify-3.12.0.tgz",
-      "integrity": "sha512-fz4spIh+znjO2VjL+IdhEpRJ3YN6sMzITSBijk6FK2UvTqruSQW+/cCZTSNsMiZNvUeq0CqurF+dAbyiGOY6Wg==",
-      "peer": true,
-      "dependencies": {
-        "browserify-cipher": "^1.0.0",
-        "browserify-sign": "^4.0.0",
-        "create-ecdh": "^4.0.0",
-        "create-hash": "^1.1.0",
-        "create-hmac": "^1.1.0",
-        "diffie-hellman": "^5.0.0",
-        "inherits": "^2.0.1",
-        "pbkdf2": "^3.0.3",
-        "public-encrypt": "^4.0.0",
-        "randombytes": "^2.0.0",
-        "randomfill": "^1.0.3"
-      },
-      "engines": {
-        "node": "*"
-      }
-    },
     "node_modules/css-select": {
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/css-select/-/css-select-4.3.0.tgz",
@@ -8760,16 +8622,6 @@
         "node": ">= 0.8"
       }
     },
-    "node_modules/des.js": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/des.js/-/des.js-1.0.1.tgz",
-      "integrity": "sha512-Q0I4pfFrv2VPd34/vfLrFOoRmlYj3OV50i7fskps1jZWK1kApMWWT9G6RRUeYedLcBDIhnSDaUvJMb3AhUlaEA==",
-      "peer": true,
-      "dependencies": {
-        "inherits": "^2.0.1",
-        "minimalistic-assert": "^1.0.0"
-      }
-    },
     "node_modules/destroy": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.2.0.tgz",
@@ -8821,17 +8673,6 @@
         "node": "^10.13.0 || ^12.13.0 || ^14.15.0 || >=15.0.0"
       }
     },
-    "node_modules/diffie-hellman": {
-      "version": "5.0.3",
-      "resolved": "https://registry.npmjs.org/diffie-hellman/-/diffie-hellman-5.0.3.tgz",
-      "integrity": "sha512-kqag/Nl+f3GwyK25fhUMYj81BUOrZ9IuJsjIcDE5icNM9FJHAVm3VcUDxdLPoQtTuUylWm6ZIknYJwwaPxsUzg==",
-      "peer": true,
-      "dependencies": {
-        "bn.js": "^4.1.0",
-        "miller-rabin": "^4.0.0",
-        "randombytes": "^2.0.0"
-      }
-    },
     "node_modules/dir-glob": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/dir-glob/-/dir-glob-3.0.1.tgz",
@@ -10127,16 +9968,6 @@
         "node": ">=0.8.x"
       }
     },
-    "node_modules/evp_bytestokey": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/evp_bytestokey/-/evp_bytestokey-1.0.3.tgz",
-      "integrity": "sha512-/f2Go4TognH/KvCISP7OUsHn85hT9nUkxxA9BEWxFn+Oj9o8ZNLm/40hdlgSLyuOimsrTKLUMEorQexp/aPQeA==",
-      "peer": true,
-      "dependencies": {
-        "md5.js": "^1.3.4",
-        "safe-buffer": "^5.1.1"
-      }
-    },
     "node_modules/execa": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/execa/-/execa-5.1.1.tgz",
@@ -14446,19 +14277,6 @@
         "node": ">=8.6"
       }
     },
-    "node_modules/miller-rabin": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/miller-rabin/-/miller-rabin-4.0.1.tgz",
-      "integrity": "sha512-115fLhvZVqWwHPbClyntxEVfVDfl9DLLTuJvq3g2O/Oxi8AiNouAHvDSzHS0viUJc+V5vm3eq91Xwqn9dp4jRA==",
-      "peer": true,
-      "dependencies": {
-        "bn.js": "^4.0.0",
-        "brorand": "^1.0.1"
-      },
-      "bin": {
-        "miller-rabin": "bin/miller-rabin"
-      }
-    },
     "node_modules/mime": {
       "version": "1.6.0",
       "resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
@@ -15298,19 +15116,6 @@
         "node": ">=6"
       }
     },
-    "node_modules/parse-asn1": {
-      "version": "5.1.6",
-      "resolved": "https://registry.npmjs.org/parse-asn1/-/parse-asn1-5.1.6.tgz",
-      "integrity": "sha512-RnZRo1EPU6JBnra2vGHj0yhp6ebyjBZpmUCLHWiFhxlzvBCCpAuZ7elsBp1PVAbQN0/04VD/19rfzlBSwLstMw==",
-      "peer": true,
-      "dependencies": {
-        "asn1.js": "^5.2.0",
-        "browserify-aes": "^1.0.0",
-        "evp_bytestokey": "^1.0.0",
-        "pbkdf2": "^3.0.3",
-        "safe-buffer": "^5.1.1"
-      }
-    },
     "node_modules/parse-json": {
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-5.2.0.tgz",
@@ -16333,20 +16138,6 @@
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       "dev": true
     },
-    "node_modules/public-encrypt": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/public-encrypt/-/public-encrypt-4.0.3.tgz",
-      "integrity": "sha512-zVpa8oKZSz5bTMTFClc1fQOnyyEzpl5ozpi1B5YcvBrdohMjH2rfsBtyXcuNuwjsDIXmBYlF2N5FlJYhR29t8Q==",
-      "peer": true,
-      "dependencies": {
-        "bn.js": "^4.1.0",
-        "browserify-rsa": "^4.0.0",
-        "create-hash": "^1.1.0",
-        "parse-asn1": "^5.0.0",
-        "randombytes": "^2.0.1",
-        "safe-buffer": "^5.1.2"
-      }
-    },
     "node_modules/pump": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/pump/-/pump-3.0.0.tgz",
@@ -16423,16 +16214,6 @@
         "safe-buffer": "^5.1.0"
       }
     },
-    "node_modules/randomfill": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/randomfill/-/randomfill-1.0.4.tgz",
-      "integrity": "sha512-87lcbR8+MhcWcUiQ+9e+Rwx8MyR2P7qnt15ynUlbm3TU/fjbgz4GsvfSUDTemtCCtVCqb4ZcEFlyPNTh9bBTLw==",
-      "peer": true,
-      "dependencies": {
-        "randombytes": "^2.0.5",
-        "safe-buffer": "^5.1.0"
-      }
-    },
     "node_modules/range-parser": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
@@ -19880,6 +19661,7 @@
       "name": "@dfinity/authentication",
       "version": "0.14.1",
       "deprecated": "This package has been deprecated. isDelegationValid has been migrated to @dfinity/identity",
+      "extraneous": true,
       "license": "Apache-2.0",
       "dependencies": {
         "@dfinity/identity": "^0.14.1"
@@ -20023,21 +19805,12 @@
       "version": "0.14.1",
       "license": "Apache-2.0",
       "dependencies": {
-        "@peculiar/webcrypto": "^1.4.0",
-        "bip39": "^3.0.4",
         "borc": "^2.1.1",
-        "bs58check": "^2.1.2",
         "js-sha256": "^0.9.0",
-        "secp256k1": "^4.0.2",
-        "stream": "^0.0.2",
-        "ts-node": "^10.8.2",
         "tweetnacl": "^1.0.1"
       },
       "devDependencies": {
-        "@types/bs58check": "^2.1.0",
-        "@types/hdkey": "^2.0.1",
         "@types/jest": "^28.1.4",
-        "@types/secp256k1": "^4.0.3",
         "@types/webappsec-credential-management": "^0.6.2",
         "@typescript-eslint/eslint-plugin": "^5.30.5",
         "@typescript-eslint/parser": "^5.30.5",
@@ -20057,7 +19830,7 @@
       "peerDependencies": {
         "@dfinity/agent": "^0.14.1",
         "@dfinity/principal": "^0.14.1",
-        "crypto-browserify": "^3.12.0"
+        "@peculiar/webcrypto": "^1.4.0"
       }
     },
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@@ -21950,6 +21748,17 @@
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@@ -24591,15 +24400,6 @@
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@@ -26008,12 +25722,6 @@
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@@ -26598,16 +26306,6 @@
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@@ -26660,25 +26358,6 @@
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@@ -27135,16 +26814,6 @@
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@@ -28067,16 +27725,6 @@
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@@ -31249,16 +30897,6 @@
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@@ -31899,19 +31537,6 @@
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-      "peer": true,
-      "requires": {
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-        "browserify-aes": "^1.0.0",
-        "evp_bytestokey": "^1.0.0",
-        "pbkdf2": "^3.0.3",
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@@ -32740,16 +32351,6 @@
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diff --git a/package.json b/package.json
index 75e90e23b..80c554e02 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
       "packages/identity",
       "packages/auth-client",
       "packages/assets",
+      "packages/identity-secp256k1",
       "e2e/node",
       "e2e/browser",
       "demos/ledgerhq",
diff --git a/packages/agent/package.json b/packages/agent/package.json
index ad3cbfc9f..0f273c252 100644
--- a/packages/agent/package.json
+++ b/packages/agent/package.json
@@ -39,7 +39,6 @@
     "build": "tsc -b && tsc -p tsconfig-cjs.json",
     "build:watch": "tsc -b --watch",
     "bundle": "esbuild --bundle src/index.ts --outfile=dist/index.js",
-    "size-limit": "size-limit",
     "eslint:fix": "npm run lint -- --fix",
     "eslint": "eslint --ext '.js,.jsx,.ts,.tsx' src/index.ts src/auth.ts src/request_id.ts src/request_id.test.ts",
     "lint": "npm run eslint",
diff --git a/packages/identity-secp256k1/.gitignore b/packages/identity-secp256k1/.gitignore
new file mode 100644
index 000000000..ae40e41e6
--- /dev/null
+++ b/packages/identity-secp256k1/.gitignore
@@ -0,0 +1,3 @@
+lib
+dist
+
diff --git a/packages/identity-secp256k1/LICENSE b/packages/identity-secp256k1/LICENSE
new file mode 100644
index 000000000..b27ba1fe8
--- /dev/null
+++ b/packages/identity-secp256k1/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
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+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
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+
+   Copyright 2020 DFINITY LLC.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
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diff --git a/packages/identity-secp256k1/README.md b/packages/identity-secp256k1/README.md
new file mode 100644
index 000000000..74cd69eac
--- /dev/null
+++ b/packages/identity-secp256k1/README.md
@@ -0,0 +1,49 @@
+# @dfinity/identity-secp256k1
+
+The Secp256k1KeyIdentity package provides an implementation of the SignIdentity interface for the secp256k1 elliptic curve. It allows you to create and manage key pairs for signing and verification of messages.
+
+Example
+Here's an example of how to use the Secp256k1KeyIdentity class to generate a new key pair and sign and verify a message:
+
+```ts
+import { Secp256k1KeyIdentity } from '@dfinity/identity-secp256k1';
+
+// Generate a new key pair
+const identity = Secp256k1KeyIdentity.generate();
+
+// Sign a message
+const message = 'Hello, world!';
+const signature = identity.sign(message);
+
+// Verify the signature
+const isValid = identity.verify(message, signature);
+
+console.log(`Signature is ${isValid ? 'valid' : 'invalid'}`);
+```
+
+You can also use a seed to generate deterministic key pairs:
+
+```ts
+import { Secp256k1KeyIdentity } from '@dfinity/identity-secp256k1';
+
+const seed = Buffer.from('my-secret-seed', 'utf8');
+const identity = Secp256k1KeyIdentity.generate(seed);
+```
+
+The Secp256k1KeyIdentity class also provides methods for converting the key pair to and from JSON-serializable objects:
+
+```ts
+import { Secp256k1KeyIdentity } from '@dfinity/agent';
+
+// Generate a new key pair
+const identity = Secp256k1KeyIdentity.generate();
+
+// Convert the key pair to a JSON-serializable object
+const json = identity.toJson();
+
+// Convert the JSON-serializable object back to a key pair
+const restoredIdentity = Secp256k1KeyIdentity.fromJson(json);
+```
+
+References
+The Secp256k1KeyIdentity class extends the SignIdentity interface from the @dfinity/agent package. For more information about the SignIdentity interface and how to use it, see the [@dfinity/agent documentation](https://agent-js.icp.xyz/agent/classes/SignIdentity.html)
diff --git a/packages/identity-secp256k1/jest.config.ts b/packages/identity-secp256k1/jest.config.ts
new file mode 100644
index 000000000..fa0a560a1
--- /dev/null
+++ b/packages/identity-secp256k1/jest.config.ts
@@ -0,0 +1,18 @@
+import baseConfig from '../../jest.config.base';
+const packageName = 'identity-secp256k1';
+
+module.exports = {
+  ...baseConfig,
+  roots: [`<rootDir>/packages/${packageName}`],
+  bail: false,
+  fakeTimers: { enableGlobally: true },
+  moduleDirectories: ['node_modules'],
+  modulePaths: [`<rootDir>/packages/${packageName}/src/`],
+  setupFiles: [`<rootDir>/packages/${packageName}/test-setup.ts`],
+  transform: {
+    '^.+\\.ts$': 'ts-jest',
+  },
+  collectCoverageFrom: ['src/**/*.{ts,tsx}'],
+  displayName: packageName,
+  rootDir: '../..',
+};
diff --git a/packages/identity-secp256k1/package-lock.json b/packages/identity-secp256k1/package-lock.json
new file mode 100644
index 000000000..132acd7fa
--- /dev/null
+++ b/packages/identity-secp256k1/package-lock.json
@@ -0,0 +1,1803 @@
+{
+  "name": "@dfinity/authentication",
+  "version": "0.14.1",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@dfinity/authentication",
+      "version": "0.14.1",
+      "deprecated": "This package has been deprecated. isDelegationValid has been migrated to @dfinity/identity",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@dfinity/identity": "^0.14.1",
+        "bip39": "^3.0.4",
+        "hdkey": "^2.0.1"
+      }
+    },
+    "node_modules/@cspotcode/source-map-support": {
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+      "resolved": "https://registry.npmjs.org/@cspotcode/source-map-support/-/source-map-support-0.8.1.tgz",
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+      "dependencies": {
+        "@jridgewell/trace-mapping": "0.3.9"
+      },
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@dfinity/agent": {
+      "version": "0.14.1",
+      "resolved": "https://registry.npmjs.org/@dfinity/agent/-/agent-0.14.1.tgz",
+      "integrity": "sha512-qLAQrhkxshcsxECnMSa1zY7mI8ua0vItrdA9JJI9WBRz4rDDXtrXyOYnh3u6pUPpdfF/i6bjx+NgrjYZucLe1Q==",
+      "peer": true,
+      "dependencies": {
+        "base64-arraybuffer": "^0.2.0",
+        "bignumber.js": "^9.0.0",
+        "borc": "^2.1.1",
+        "js-sha256": "0.9.0",
+        "simple-cbor": "^0.4.1",
+        "ts-node": "^10.8.2"
+      },
+      "peerDependencies": {
+        "@dfinity/candid": "^0.14.1",
+        "@dfinity/principal": "^0.14.1"
+      }
+    },
+    "node_modules/@dfinity/candid": {
+      "version": "0.14.1",
+      "resolved": "https://registry.npmjs.org/@dfinity/candid/-/candid-0.14.1.tgz",
+      "integrity": "sha512-yRIRnVrJ4LjB0jFKUqZ2NeUzCCR6m8pm/n+0+IoVzY94ZkFATUkBSvdNxDZd1CCtNDNApi+YDe61DSQ51cDkrg==",
+      "peer": true,
+      "dependencies": {
+        "ts-node": "^10.8.2"
+      }
+    },
+    "node_modules/@dfinity/identity": {
+      "version": "0.14.1",
+      "resolved": "https://registry.npmjs.org/@dfinity/identity/-/identity-0.14.1.tgz",
+      "integrity": "sha512-3/Be+5QOes6EERpqE8vEIIh53TPTD074hqnwXZjUXwEOKteYyYw/0+IeAdN47Z3ewowFXLcMmif13poXhM5RZQ==",
+      "dependencies": {
+        "@peculiar/webcrypto": "^1.4.0",
+        "bip39": "^3.0.4",
+        "borc": "^2.1.1",
+        "bs58check": "^2.1.2",
+        "js-sha256": "^0.9.0",
+        "secp256k1": "^4.0.2",
+        "ts-node": "^10.8.2",
+        "tweetnacl": "^1.0.1"
+      },
+      "peerDependencies": {
+        "@dfinity/agent": "^0.14.1",
+        "@dfinity/principal": "^0.14.1",
+        "crypto-browserify": "^3.12.0"
+      }
+    },
+    "node_modules/@dfinity/principal": {
+      "version": "0.14.1",
+      "resolved": "https://registry.npmjs.org/@dfinity/principal/-/principal-0.14.1.tgz",
+      "integrity": "sha512-a5TDU0iWLeuNjI+L1Ukx5nRhQHMCN2GRQkQg1Z0AzP3dX7FkBOiaLwMCLhCRUk/sK/SeR6/hCA0YKiwRqzjhqA==",
+      "peer": true,
+      "dependencies": {
+        "js-sha256": "^0.9.0",
+        "ts-node": "^10.8.2"
+      }
+    },
+    "node_modules/@jridgewell/resolve-uri": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@jridgewell/resolve-uri/-/resolve-uri-3.1.0.tgz",
+      "integrity": "sha512-F2msla3tad+Mfht5cJq7LSXcdudKTWCVYUgw6pLFOOHSTtZlj6SWNYAp+AhuqLmWdBO2X5hPrLcu8cVP8fy28w==",
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@jridgewell/sourcemap-codec": {
+      "version": "1.4.14",
+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.14.tgz",
+      "integrity": "sha512-XPSJHWmi394fuUuzDnGz1wiKqWfo1yXecHQMRf2l6hztTO+nPru658AyDngaBe7isIxEkRsPR3FZh+s7iVa4Uw=="
+    },
+    "node_modules/@jridgewell/trace-mapping": {
+      "version": "0.3.9",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.9.tgz",
+      "integrity": "sha512-3Belt6tdc8bPgAtbcmdtNJlirVoTmEb5e2gC94PnkwEW9jI6CAHUeoG85tjWP5WquqfavoMtMwiG4P926ZKKuQ==",
+      "dependencies": {
+        "@jridgewell/resolve-uri": "^3.0.3",
+        "@jridgewell/sourcemap-codec": "^1.4.10"
+      }
+    },
+    "node_modules/@peculiar/asn1-schema": {
+      "version": "2.3.3",
+      "resolved": "https://registry.npmjs.org/@peculiar/asn1-schema/-/asn1-schema-2.3.3.tgz",
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+      "dependencies": {
+        "asn1js": "^3.0.5",
+        "pvtsutils": "^1.3.2",
+        "tslib": "^2.4.0"
+      }
+    },
+    "node_modules/@peculiar/json-schema": {
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+      "resolved": "https://registry.npmjs.org/@peculiar/json-schema/-/json-schema-1.1.12.tgz",
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+      "dependencies": {
+        "tslib": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=8.0.0"
+      }
+    },
+    "node_modules/@peculiar/webcrypto": {
+      "version": "1.4.1",
+      "resolved": "https://registry.npmjs.org/@peculiar/webcrypto/-/webcrypto-1.4.1.tgz",
+      "integrity": "sha512-eK4C6WTNYxoI7JOabMoZICiyqRRtJB220bh0Mbj5RwRycleZf9BPyZoxsTvpP0FpmVS2aS13NKOuh5/tN3sIRw==",
+      "dependencies": {
+        "@peculiar/asn1-schema": "^2.3.0",
+        "@peculiar/json-schema": "^1.1.12",
+        "pvtsutils": "^1.3.2",
+        "tslib": "^2.4.1",
+        "webcrypto-core": "^1.7.4"
+      },
+      "engines": {
+        "node": ">=10.12.0"
+      }
+    },
+    "node_modules/@tsconfig/node10": {
+      "version": "1.0.9",
+      "resolved": "https://registry.npmjs.org/@tsconfig/node10/-/node10-1.0.9.tgz",
+      "integrity": "sha512-jNsYVVxU8v5g43Erja32laIDHXeoNvFEpX33OK4d6hljo3jDhCBDhx5dhCCTMWUojscpAagGiRkBKxpdl9fxqA=="
+    },
+    "node_modules/@tsconfig/node12": {
+      "version": "1.0.11",
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+      }
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+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw=="
+    },
+    "v8-compile-cache-lib": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.1.tgz",
+      "integrity": "sha512-wa7YjyUGfNZngI/vtK0UHAN+lgDCxBPCylVXGp0zu59Fz5aiGtNXaq3DhIov063MorB+VfufLh3JlF2KdTK3xg=="
+    },
+    "webcrypto-core": {
+      "version": "1.7.5",
+      "resolved": "https://registry.npmjs.org/webcrypto-core/-/webcrypto-core-1.7.5.tgz",
+      "integrity": "sha512-gaExY2/3EHQlRNNNVSrbG2Cg94Rutl7fAaKILS1w8ZDhGxdFOaw6EbCfHIxPy9vt/xwp5o0VQAx9aySPF6hU1A==",
+      "requires": {
+        "@peculiar/asn1-schema": "^2.1.6",
+        "@peculiar/json-schema": "^1.1.12",
+        "asn1js": "^3.0.1",
+        "pvtsutils": "^1.3.2",
+        "tslib": "^2.4.0"
+      }
+    },
+    "yn": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",
+      "integrity": "sha512-Ux4ygGWsu2c7isFWe8Yu1YluJmqVhxqK2cLXNQA5AcC3QfbGNpM7fu0Y8b/z16pXLnFxZYvWhd3fhBY9DLmC6Q=="
+    }
+  }
+}
diff --git a/packages/identity-secp256k1/package.json b/packages/identity-secp256k1/package.json
new file mode 100644
index 000000000..76689d08a
--- /dev/null
+++ b/packages/identity-secp256k1/package.json
@@ -0,0 +1,26 @@
+{
+  "name": "@dfinity/identity-secp256k1",
+  "version": "0.14.1",
+  "author": "DFINITY Stiftung <sdk@dfinity.org>",
+  "license": "Apache-2.0",
+  "description": "JavaScript and TypeScript library to manage Secp256k1KeyIdentities for use with the Internet Computer",
+  "main": "./lib/cjs/index.js",
+  "scripts": {
+    "build": "tsc -b && tsc -p tsconfig-cjs.json",
+    "eslint": "eslint --ext '.js,.jsx,.ts,.tsx'",
+    "make:docs/reference": "typedoc src/index.ts --out ../../docs/generated/secp256k1 --excludeInternal",
+    "bundle": "esbuild --bundle src/index.ts --outfile=dist/index.js --platform=node",
+    "test": "jest",
+    "test:coverage": "jest --verbose --collectCoverage"
+  },
+  "dependencies": {
+    "@dfinity/agent": "^0.14.1",
+    "bip39": "^3.0.4",
+    "bs58check": "^2.1.2",
+    "secp256k1": "^4.0.3"
+  },
+  "devDependencies": {
+    "@types/bs58check": "^2.1.0",
+    "@types/secp256k1": "^4.0.3"
+  }
+}
diff --git a/packages/identity/src/identity/__snapshots__/secp256k1.test.ts.snap b/packages/identity-secp256k1/src/__snapshots__/secp256k1.test.ts.snap
similarity index 100%
rename from packages/identity/src/identity/__snapshots__/secp256k1.test.ts.snap
rename to packages/identity-secp256k1/src/__snapshots__/secp256k1.test.ts.snap
diff --git a/packages/identity-secp256k1/src/buffer.ts b/packages/identity-secp256k1/src/buffer.ts
new file mode 100644
index 000000000..37366061b
--- /dev/null
+++ b/packages/identity-secp256k1/src/buffer.ts
@@ -0,0 +1,15 @@
+/**
+ * Return an array buffer from its hexadecimal representation.
+ * @param hexString The hexadecimal string.
+ */
+export function fromHexString(hexString: string): ArrayBuffer {
+  return new Uint8Array((hexString.match(/.{1,2}/g) ?? []).map(byte => parseInt(byte, 16))).buffer;
+}
+
+/**
+ * Returns an hexadecimal representation of an array buffer.
+ * @param bytes The array buffer.
+ */
+export function toHexString(bytes: ArrayBuffer): string {
+  return new Uint8Array(bytes).reduce((str, byte) => str + byte.toString(16).padStart(2, '0'), '');
+}
diff --git a/packages/identity-secp256k1/src/der.test.ts b/packages/identity-secp256k1/src/der.test.ts
new file mode 100644
index 000000000..765451983
--- /dev/null
+++ b/packages/identity-secp256k1/src/der.test.ts
@@ -0,0 +1,163 @@
+import { bufEquals, encodeLenBytes, encodeLen, decodeLenBytes, decodeLen } from './der';
+
+describe('bufEquals tests', () => {
+  test('equal buffers', () => {
+    const buf1 = Uint8Array.from([0, 0, 0, 1]).buffer;
+    const buf2 = Uint8Array.from([0, 0, 0, 1]).buffer;
+    expect(bufEquals(buf1, buf2)).toBe(true);
+  });
+  test('rejects buffers with different lengths', () => {
+    const buf1 = Uint8Array.from([0, 0, 0, 0, 1]).buffer;
+    const buf2 = Uint8Array.from([0, 0, 0, 1]).buffer;
+    expect(bufEquals(buf1, buf2)).toBe(false);
+  });
+  test('rejects buffers with different values', () => {
+    const buf1 = Uint8Array.from([0, 0, 0, 2]).buffer;
+    const buf2 = Uint8Array.from([0, 0, 0, 1]).buffer;
+    expect(bufEquals(buf1, buf2)).toBe(false);
+  });
+});
+
+describe('encodeLenBytes', () => {
+  test('Length of up to 127', () => {
+    const byteLength = Uint8Array.from(new Array(127)).byteLength;
+    expect(encodeLenBytes(byteLength)).toEqual(1);
+  });
+  test('Length of up to 255', () => {
+    const min = Uint8Array.from(new Array(128)).byteLength;
+    expect(encodeLenBytes(min)).toEqual(2);
+    const max = Uint8Array.from(new Array(255)).byteLength;
+    expect(encodeLenBytes(max)).toEqual(2);
+  });
+  test('Length of up to 65536', () => {
+    const min = Uint8Array.from(new Array(256)).byteLength;
+    expect(encodeLenBytes(min)).toEqual(3);
+    const max = Uint8Array.from(new Array(65535)).byteLength;
+    expect(encodeLenBytes(max)).toEqual(3);
+  });
+  test('Length of up to 16777215', () => {
+    // Using numbers directly for performance
+    const min = 65536;
+    expect(encodeLenBytes(min)).toEqual(4);
+    const max = 16777215;
+    expect(encodeLenBytes(max)).toEqual(4);
+  });
+  test('Over maximum length', () => {
+    const shouldFail = () => encodeLenBytes(16777216);
+    expect(shouldFail).toThrowError('Length too long (> 4 bytes)');
+  });
+});
+
+describe('encodeLen', () => {
+  const buf = Uint8Array.from(new Array(256));
+  test('Length of up to 127', () => {
+    const min = encodeLen(buf, 0, 1);
+    const max = encodeLen(buf, 0, 127);
+    expect(min).toEqual(1);
+    expect(max).toEqual(1);
+  });
+  test('Length of up to 255', () => {
+    const min = encodeLen(buf, 0, 128);
+    const max = encodeLen(buf, 0, 255);
+    expect(min).toEqual(2);
+    expect(max).toEqual(2);
+  });
+  test('Length of up to 65535', () => {
+    const min = encodeLen(buf, 0, 256);
+    const max = encodeLen(buf, 0, 65535);
+    expect(min).toEqual(3);
+    expect(max).toEqual(3);
+  });
+  test('Length of up to 16777215', () => {
+    const min = encodeLen(buf, 0, 65536);
+    const max = encodeLen(buf, 0, 16777215);
+    expect(min).toEqual(4);
+    expect(max).toEqual(4);
+  });
+  test('Length of up to 16777215', () => {
+    const min = encodeLen(buf, 0, 65536);
+    const max = encodeLen(buf, 0, 16777215);
+    expect(min).toEqual(4);
+    expect(max).toEqual(4);
+  });
+  test('Over maximum length', () => {
+    const shouldFail = () => encodeLen(buf, 0, 16777216);
+    expect(shouldFail).toThrowError('Length too long (> 4 bytes)');
+  });
+});
+
+describe('DecodeLenBytes', () => {
+  test('encoded length of zero', () => {
+    // length of buf doesn't matter
+    const buf = Uint8Array.from(new Array(2));
+    // 129 signifies a DER length of 2
+    buf[0] = 128;
+    const shouldFail = () => decodeLenBytes(buf, 0);
+    expect(shouldFail).toThrowError('Invalid length 0');
+  });
+  test('encoded length of 1', () => {
+    const buf = Uint8Array.of(100);
+    expect(decodeLenBytes(buf, 0)).toBe(1);
+  });
+  test('encoded length of 2', () => {
+    const buf = Uint8Array.from(new Array(2));
+    // 129 signifies a DER length of 2
+    buf[0] = 129;
+    expect(decodeLenBytes(buf, 0)).toBe(2);
+  });
+  test('encoded length of 3', () => {
+    const buf = Uint8Array.from(new Array(2));
+    // 130 signifies a DER length of 3
+    buf[0] = 130;
+    expect(decodeLenBytes(buf, 0)).toBe(3);
+  });
+  test('encoded length of 4', () => {
+    const buf = Uint8Array.from(new Array(2));
+    // 131 signifies a DER length of 4
+    buf[0] = 131;
+    expect(decodeLenBytes(buf, 0)).toBe(4);
+  });
+  test('encoded length of 4', () => {
+    const buf = Uint8Array.from(new Array(2));
+    buf[0] = 132;
+    const shouldFail = () => decodeLenBytes(buf, 0);
+    expect(shouldFail).toThrowError('Length too long');
+  });
+});
+
+describe('decodeLen', () => {
+  test('encoded length of 1', () => {
+    const buf = Uint8Array.of(1);
+    expect(decodeLen(buf, 0)).toBe(1);
+  });
+  test('encoded length of 2', () => {
+    const buf = Uint8Array.from(new Array(10));
+    buf[0] = 129;
+    // returns value stored at index 1
+    buf[1] = 5;
+
+    expect(decodeLen(buf, 0)).toBe(5);
+  });
+  test('encoded length of 3', () => {
+    const buf = Uint8Array.from(new Array(10));
+    buf[0] = 130;
+    buf[1] = 1;
+    buf[2] = 1;
+    expect(decodeLen(buf, 0)).toBe(257);
+  });
+  test('encoded length of 4', () => {
+    const buf = Uint8Array.from(new Array(10));
+    buf[0] = 131;
+    buf[1] = 1;
+    buf[2] = 1;
+    buf[3] = 1;
+    // returns value encoded by summing buf[offset + 3] and left-shifts of the values at index 1, and 2
+    expect(decodeLen(buf, 0)).toBe(65793);
+  });
+  test('length of over 4 bytes', () => {
+    const buf = Uint8Array.from(new Array(10));
+    buf[0] = 133;
+    const shouldFail = () => decodeLen(buf, 0);
+    expect(shouldFail).toThrowError('Length too long');
+  });
+});
diff --git a/packages/identity-secp256k1/src/der.ts b/packages/identity-secp256k1/src/der.ts
new file mode 100644
index 000000000..be1ea858d
--- /dev/null
+++ b/packages/identity-secp256k1/src/der.ts
@@ -0,0 +1,166 @@
+export const bufEquals = (b1: ArrayBuffer, b2: ArrayBuffer): boolean => {
+  if (b1.byteLength !== b2.byteLength) return false;
+  const u1 = new Uint8Array(b1);
+  const u2 = new Uint8Array(b2);
+  for (let i = 0; i < u1.length; i++) {
+    if (u1[i] !== u2[i]) return false;
+  }
+  return true;
+};
+
+export const encodeLenBytes = (len: number): number => {
+  if (len <= 0x7f) {
+    return 1;
+  } else if (len <= 0xff) {
+    return 2;
+  } else if (len <= 0xffff) {
+    return 3;
+  } else if (len <= 0xffffff) {
+    return 4;
+  } else {
+    throw new Error('Length too long (> 4 bytes)');
+  }
+};
+
+export const encodeLen = (buf: Uint8Array, offset: number, len: number): number => {
+  if (len <= 0x7f) {
+    buf[offset] = len;
+    return 1;
+  } else if (len <= 0xff) {
+    buf[offset] = 0x81;
+    buf[offset + 1] = len;
+    return 2;
+  } else if (len <= 0xffff) {
+    buf[offset] = 0x82;
+    buf[offset + 1] = len >> 8;
+    buf[offset + 2] = len;
+    return 3;
+  } else if (len <= 0xffffff) {
+    buf[offset] = 0x83;
+    buf[offset + 1] = len >> 16;
+    buf[offset + 2] = len >> 8;
+    buf[offset + 3] = len;
+    return 4;
+  } else {
+    throw new Error('Length too long (> 4 bytes)');
+  }
+};
+
+export const decodeLenBytes = (buf: Uint8Array, offset: number): number => {
+  if (buf[offset] < 0x80) return 1;
+  if (buf[offset] === 0x80) throw new Error('Invalid length 0');
+  if (buf[offset] === 0x81) return 2;
+  if (buf[offset] === 0x82) return 3;
+  if (buf[offset] === 0x83) return 4;
+  throw new Error('Length too long (> 4 bytes)');
+};
+
+export const decodeLen = (buf: Uint8Array, offset: number): number => {
+  const lenBytes = decodeLenBytes(buf, offset);
+  if (lenBytes === 1) return buf[offset];
+  else if (lenBytes === 2) return buf[offset + 1];
+  else if (lenBytes === 3) return (buf[offset + 1] << 8) + buf[offset + 2];
+  else if (lenBytes === 4)
+    return (buf[offset + 1] << 16) + (buf[offset + 2] << 8) + buf[offset + 3];
+  throw new Error('Length too long (> 4 bytes)');
+};
+
+/**
+ * A DER encoded `SEQUENCE(OID)` for DER-encoded-COSE
+ */
+export const DER_COSE_OID = Uint8Array.from([
+  ...[0x30, 0x0c], // SEQUENCE
+  ...[0x06, 0x0a], // OID with 10 bytes
+  ...[0x2b, 0x06, 0x01, 0x04, 0x01, 0x83, 0xb8, 0x43, 0x01, 0x01], // DER encoded COSE
+]);
+
+/**
+ * A DER encoded `SEQUENCE(OID)` for the Ed25519 algorithm
+ */
+export const ED25519_OID = Uint8Array.from([
+  ...[0x30, 0x05], // SEQUENCE
+  ...[0x06, 0x03], // OID with 3 bytes
+  ...[0x2b, 0x65, 0x70], // id-Ed25519 OID
+]);
+
+/**
+ * A DER encoded `SEQUENCE(OID)` for secp256k1 with the ECDSA algorithm
+ */
+export const SECP256K1_OID = Uint8Array.from([
+  ...[0x30, 0x10], // SEQUENCE
+  ...[0x06, 0x07], // OID with 7 bytes
+  ...[0x2a, 0x86, 0x48, 0xce, 0x3d, 0x02, 0x01], // OID ECDSA
+  ...[0x06, 0x05], // OID with 5 bytes
+  ...[0x2b, 0x81, 0x04, 0x00, 0x0a], // OID secp256k1
+]);
+
+/**
+ * Wraps the given `payload` in a DER encoding tagged with the given encoded `oid` like so:
+ * `SEQUENCE(oid, BITSTRING(payload))`
+ *
+ * @param payload The payload to encode as the bit string
+ * @param oid The DER encoded (and SEQUENCE wrapped!) OID to tag the payload with
+ */
+export function wrapDER(payload: ArrayBuffer, oid: Uint8Array): Uint8Array {
+  // The Bit String header needs to include the unused bit count byte in its length
+  const bitStringHeaderLength = 2 + encodeLenBytes(payload.byteLength + 1);
+  const len = oid.byteLength + bitStringHeaderLength + payload.byteLength;
+  let offset = 0;
+  const buf = new Uint8Array(1 + encodeLenBytes(len) + len);
+  // Sequence
+  buf[offset++] = 0x30;
+  // Sequence Length
+  offset += encodeLen(buf, offset, len);
+
+  // OID
+  buf.set(oid, offset);
+  offset += oid.byteLength;
+
+  // Bit String Header
+  buf[offset++] = 0x03;
+  offset += encodeLen(buf, offset, payload.byteLength + 1);
+  // 0 padding
+  buf[offset++] = 0x00;
+  buf.set(new Uint8Array(payload), offset);
+
+  return buf;
+}
+
+/**
+ * Extracts a payload from the given `derEncoded` data, and checks that it was tagged with the given `oid`.
+ *
+ * `derEncoded = SEQUENCE(oid, BITSTRING(payload))`
+ *
+ * @param derEncoded The DER encoded and tagged data
+ * @param oid The DER encoded (and SEQUENCE wrapped!) expected OID
+ * @returns The unwrapped payload
+ */
+export const unwrapDER = (derEncoded: ArrayBuffer, oid: Uint8Array): Uint8Array => {
+  let offset = 0;
+  const expect = (n: number, msg: string) => {
+    if (buf[offset++] !== n) {
+      throw new Error('Expected: ' + msg);
+    }
+  };
+
+  const buf = new Uint8Array(derEncoded);
+  expect(0x30, 'sequence');
+  offset += decodeLenBytes(buf, offset);
+
+  if (!bufEquals(buf.slice(offset, offset + oid.byteLength), oid)) {
+    throw new Error('Not the expected OID.');
+  }
+  offset += oid.byteLength;
+
+  expect(0x03, 'bit string');
+  const payloadLen = decodeLen(buf, offset) - 1; // Subtracting 1 to account for the 0 padding
+  offset += decodeLenBytes(buf, offset);
+  expect(0x00, '0 padding');
+  const result = buf.slice(offset);
+  if (payloadLen !== result.length) {
+    throw new Error(
+      `DER payload mismatch: Expected length ${payloadLen} actual length ${result.length}`,
+    );
+  }
+  return result;
+};
diff --git a/packages/identity/src/identity/hdkey.ts b/packages/identity-secp256k1/src/hdkey.ts
similarity index 98%
rename from packages/identity/src/identity/hdkey.ts
rename to packages/identity-secp256k1/src/hdkey.ts
index 8cc432953..cb533393d 100644
--- a/packages/identity/src/identity/hdkey.ts
+++ b/packages/identity-secp256k1/src/hdkey.ts
@@ -1,12 +1,12 @@
 /* eslint-disable @typescript-eslint/ban-ts-comment */
-// Package adapted from https://www.npmjs.com/package/hdkey to run in the browser
+// Package adapted from https://www.npmjs.com/package/hdkey
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/no-this-alias */
 import assert from 'assert';
 import { Buffer } from 'buffer';
 import bs58check from 'bs58check';
 import secp256k1 from 'secp256k1';
-import { createHmac, createHash, randomBytes } from 'crypto-browserify';
+import { createHmac, createHash, randomBytes } from 'crypto';
 
 const MASTER_SECRET = Buffer.from('Bitcoin seed', 'utf8');
 const HARDENED_OFFSET = 0x80000000;
diff --git a/packages/identity-secp256k1/src/index.ts b/packages/identity-secp256k1/src/index.ts
new file mode 100644
index 000000000..4b54be3ca
--- /dev/null
+++ b/packages/identity-secp256k1/src/index.ts
@@ -0,0 +1 @@
+export * from './secp256k1';
diff --git a/packages/identity/src/identity/secp256k1.test.ts b/packages/identity-secp256k1/src/secp256k1.test.ts
similarity index 100%
rename from packages/identity/src/identity/secp256k1.test.ts
rename to packages/identity-secp256k1/src/secp256k1.test.ts
diff --git a/packages/identity/src/identity/secp256k1.ts b/packages/identity-secp256k1/src/secp256k1.ts
similarity index 99%
rename from packages/identity/src/identity/secp256k1.ts
rename to packages/identity-secp256k1/src/secp256k1.ts
index efa6e7083..ecf41e69d 100644
--- a/packages/identity/src/identity/secp256k1.ts
+++ b/packages/identity-secp256k1/src/secp256k1.ts
@@ -6,7 +6,7 @@ import { randomBytes } from 'tweetnacl';
 import hdkey from './hdkey';
 import { mnemonicToSeedSync } from 'bip39';
 import { PublicKey, SignIdentity } from '@dfinity/agent';
-import { fromHexString, toHexString } from '../buffer';
+import { fromHexString, toHexString } from './buffer';
 import { SECP256K1_OID, unwrapDER, wrapDER } from './der';
 
 declare type PublicKeyHex = string;
diff --git a/packages/identity-secp256k1/test-setup.ts b/packages/identity-secp256k1/test-setup.ts
new file mode 100644
index 000000000..c993e8a5c
--- /dev/null
+++ b/packages/identity-secp256k1/test-setup.ts
@@ -0,0 +1,11 @@
+// This file may be used to polyfill features that aren't available in the test
+// environment, i.e. JSDom.
+//
+// We sometimes need to do this because our target browsers are expected to have
+// a feature that JSDom doesn't.
+//
+// Note that we can use webpack configuration to make some features available to
+// Node.js in a similar way.
+
+global.crypto = require('@trust/webcrypto');
+global.fetch = require('isomorphic-fetch');
diff --git a/packages/identity-secp256k1/tsconfig-cjs.json b/packages/identity-secp256k1/tsconfig-cjs.json
new file mode 100644
index 000000000..524a27af4
--- /dev/null
+++ b/packages/identity-secp256k1/tsconfig-cjs.json
@@ -0,0 +1,7 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "module": "CommonJS",
+    "outDir": "lib/cjs"
+  }
+}
diff --git a/packages/identity-secp256k1/tsconfig.json b/packages/identity-secp256k1/tsconfig.json
new file mode 100644
index 000000000..b59d311da
--- /dev/null
+++ b/packages/identity-secp256k1/tsconfig.json
@@ -0,0 +1,26 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "baseUrl": "./",
+    "composite": true,
+    "declaration": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": true,
+    "incremental": true,
+    "lib": ["es2020"],
+    "module": "ES2020",
+    "moduleResolution": "node",
+    "outDir": "lib/esm",
+    "paths": {
+      "@dfinity/identity-secp256k1": ["src"]
+    },
+    "resolveJsonModule": true,
+    "rootDir": "./src",
+    "sourceMap": true,
+    "inlineSources": true,
+    "strict": true,
+    "target": "es2017",
+    "tsBuildInfoFile": "./build_info.json"
+  },
+  "include": ["src/**/*.ts", "types/*"]
+}
diff --git a/packages/identity-secp256k1/types/hdkey.d.ts b/packages/identity-secp256k1/types/hdkey.d.ts
new file mode 100644
index 000000000..09c83b135
--- /dev/null
+++ b/packages/identity-secp256k1/types/hdkey.d.ts
@@ -0,0 +1 @@
+declare module 'crypto-browserify';
diff --git a/packages/identity/meta.json b/packages/identity/meta.json
new file mode 100644
index 000000000..e285f983d
--- /dev/null
+++ b/packages/identity/meta.json
@@ -0,0 +1,1132 @@
+{
+  "inputs": {
+    "../../node_modules/base64-js/index.js": {
+      "bytes": 3932,
+      "imports": []
+    },
+    "../../node_modules/ieee754/index.js": {
+      "bytes": 2154,
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+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/auth.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/certificate.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/agent/http/transforms.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/agent/http/types.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/canisters/asset.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/canisters/management.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/fetch_candid.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/request_id.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/utils/bls.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/utils/buffer.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/polling/index.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/canisterStatus/index.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../agent/lib/esm/cbor.js",
+          "kind": "import-statement"
+        }
+      ]
+    },
+    "src/identity/ecdsa.ts": {
+      "bytes": 4836,
+      "imports": [
+        {
+          "path": "../agent/lib/esm/index.js",
+          "kind": "import-statement"
+        }
+      ]
+    },
+    "src/buffer.ts": {
+      "bytes": 545,
+      "imports": []
+    },
+    "src/identity/delegation.ts": {
+      "bytes": 12028,
+      "imports": [
+        {
+          "path": "../agent/lib/esm/index.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../principal/lib/esm/index.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../../node_modules/simple-cbor/src/index.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "src/buffer.ts",
+          "kind": "import-statement"
+        }
+      ]
+    },
+    "(disabled):crypto": {
+      "bytes": 0,
+      "imports": []
+    },
+    "../../node_modules/tweetnacl/nacl-fast.js": {
+      "bytes": 61966,
+      "imports": [
+        {
+          "path": "(disabled):crypto",
+          "kind": "require-call"
+        }
+      ]
+    },
+    "src/identity/der.ts": {
+      "bytes": 5120,
+      "imports": []
+    },
+    "src/identity/webauthn.ts": {
+      "bytes": 7030,
+      "imports": [
+        {
+          "path": "../agent/lib/esm/index.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../../node_modules/borc/src/index.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "../../node_modules/tweetnacl/nacl-fast.js",
+          "kind": "import-statement"
+        },
+        {
+          "path": "src/buffer.ts",
+          "kind": "import-statement"
+        },
+        {
+          "path": "src/identity/der.ts",
+          "kind": "import-statement"
+        }
+      ]
+    },
+    "src/index.ts": {
+      "bytes": 371,
+      "imports": [
+        {
+          "path": "src/identity/ecdsa.ts",
+          "kind": "import-statement"
+        },
+        {
+          "path": "src/identity/delegation.ts",
+          "kind": "import-statement"
+        },
+        {
+          "path": "src/identity/webauthn.ts",
+          "kind": "import-statement"
+        },
+        {
+          "path": "src/identity/der.ts",
+          "kind": "import-statement"
+        }
+      ]
+    }
+  },
+  "outputs": {
+    "dist/index.js": {
+      "imports": [],
+      "exports": [],
+      "entryPoint": "src/index.ts",
+      "inputs": {
+        "../../node_modules/base64-js/index.js": {
+          "bytesInOutput": 3910
+        },
+        "../../node_modules/ieee754/index.js": {
+          "bytesInOutput": 2659
+        },
+        "../../node_modules/buffer/index.js": {
+          "bytesInOutput": 61512
+        },
+        "../agent/lib/esm/agent/api.js": {
+          "bytesInOutput": 652
+        },
+        "../principal/lib/esm/utils/base32.js": {
+          "bytesInOutput": 1645
+        },
+        "../principal/lib/esm/utils/getCrc.js": {
+          "bytesInOutput": 5480
+        },
+        "../../node_modules/js-sha256/src/sha256.js": {
+          "bytesInOutput": 20756
+        },
+        "../principal/lib/esm/utils/sha224.js": {
+          "bytesInOutput": 334
+        },
+        "../principal/lib/esm/index.js": {
+          "bytesInOutput": 3861
+        },
+        "../agent/lib/esm/errors.js": {
+          "bytesInOutput": 97
+        },
+        "../candid/lib/esm/utils/buffer.js": {
+          "bytesInOutput": 1947
+        },
+        "../candid/lib/esm/utils/hash.js": {
+          "bytesInOutput": 100
+        },
+        "../candid/lib/esm/utils/leb128.js": {
+          "bytesInOutput": 4165
+        },
+        "../candid/lib/esm/utils/bigint-math.js": {
+          "bytesInOutput": 279
+        },
+        "../candid/lib/esm/idl.js": {
+          "bytesInOutput": 15982
+        },
+        "../candid/lib/esm/candid-core.js": {
+          "bytesInOutput": 108
+        },
+        "../candid/lib/esm/candid-ui.js": {
+          "bytesInOutput": 166
+        },
+        "../candid/lib/esm/types.js": {
+          "bytesInOutput": 96
+        },
+        "../candid/lib/esm/index.js": {
+          "bytesInOutput": 224
+        },
+        "../../node_modules/borc/node_modules/buffer/index.js": {
+          "bytesInOutput": 52530
+        },
+        "../../node_modules/bignumber.js/bignumber.js": {
+          "bytesInOutput": 54301
+        },
+        "../../node_modules/borc/src/decoder.asm.js": {
+          "bytesInOutput": 25500
+        },
+        "../../node_modules/borc/src/constants.js": {
+          "bytesInOutput": 1608
+        },
+        "../../node_modules/borc/src/utils.js": {
+          "bytesInOutput": 3216
+        },
+        "../../node_modules/borc/src/simple.js": {
+          "bytesInOutput": 1866
+        },
+        "../../node_modules/borc/src/tagged.js": {
+          "bytesInOutput": 1308
+        },
+        "../../node_modules/iso-url/src/url-browser.js": {
+          "bytesInOutput": 3866
+        },
+        "../../node_modules/iso-url/src/relative.js": {
+          "bytesInOutput": 855
+        },
+        "../../node_modules/iso-url/index.js": {
+          "bytesInOutput": 458
+        },
+        "../../node_modules/borc/src/decoder.js": {
+          "bytesInOutput": 15539
+        },
+        "../../node_modules/borc/src/diagnose.js": {
+          "bytesInOutput": 3999
+        },
+        "../../node_modules/borc/src/encoder.js": {
+          "bytesInOutput": 13387
+        },
+        "../../node_modules/borc/src/index.js": {
+          "bytesInOutput": 768
+        },
+        "../agent/lib/esm/utils/buffer.js": {
+          "bytesInOutput": 1231
+        },
+        "../agent/lib/esm/request_id.js": {
+          "bytesInOutput": 2066
+        },
+        "../agent/lib/esm/auth.js": {
+          "bytesInOutput": 1453
+        },
+        "../../node_modules/simple-cbor/src/value.js": {
+          "bytesInOutput": 9863
+        },
+        "../../node_modules/simple-cbor/src/serializer.js": {
+          "bytesInOutput": 5104
+        },
+        "../../node_modules/simple-cbor/src/index.js": {
+          "bytesInOutput": 833
+        },
+        "../agent/lib/esm/cbor.js": {
+          "bytesInOutput": 2379
+        },
+        "../agent/lib/esm/agent/http/types.js": {
+          "bytesInOutput": 272
+        },
+        "../agent/lib/esm/agent/http/transforms.js": {
+          "bytesInOutput": 389
+        },
+        "../agent/lib/esm/agent/http/index.js": {
+          "bytesInOutput": 950
+        },
+        "../agent/lib/esm/agent/proxy.js": {
+          "bytesInOutput": 770
+        },
+        "../agent/lib/esm/agent/index.js": {
+          "bytesInOutput": 158
+        },
+        "../agent/lib/esm/canisters/management_idl.js": {
+          "bytesInOutput": 123
+        },
+        "../agent/lib/esm/canisters/management.js": {
+          "bytesInOutput": 182
+        },
+        "../../node_modules/base64-arraybuffer/lib/base64-arraybuffer.js": {
+          "bytesInOutput": 2075
+        },
+        "../agent/lib/esm/vendor/bls/wasm.js": {
+          "bytesInOutput": 71219
+        },
+        "../agent/lib/esm/vendor/bls/bls.js": {
+          "bytesInOutput": 283
+        },
+        "../agent/lib/esm/utils/bls.js": {
+          "bytesInOutput": 116
+        },
+        "../agent/lib/esm/certificate.js": {
+          "bytesInOutput": 355
+        },
+        "../agent/lib/esm/polling/strategy.js": {
+          "bytesInOutput": 2292
+        },
+        "../agent/lib/esm/polling/index.js": {
+          "bytesInOutput": 219
+        },
+        "../agent/lib/esm/actor.js": {
+          "bytesInOutput": 800
+        },
+        "../agent/lib/esm/canisters/asset_idl.js": {
+          "bytesInOutput": 113
+        },
+        "../agent/lib/esm/canisters/asset.js": {
+          "bytesInOutput": 149
+        },
+        "../agent/lib/esm/fetch_candid.js": {
+          "bytesInOutput": 146
+        },
+        "../agent/lib/esm/canisterStatus/index.js": {
+          "bytesInOutput": 196
+        },
+        "../agent/lib/esm/index.js": {
+          "bytesInOutput": 413
+        },
+        "(disabled):crypto": {
+          "bytesInOutput": 76
+        },
+        "../../node_modules/tweetnacl/nacl-fast.js": {
+          "bytesInOutput": 78089
+        },
+        "src/identity/ecdsa.ts": {
+          "bytesInOutput": 2266
+        },
+        "src/index.ts": {
+          "bytesInOutput": 0
+        },
+        "src/identity/delegation.ts": {
+          "bytesInOutput": 5980
+        },
+        "src/buffer.ts": {
+          "bytesInOutput": 317
+        },
+        "src/identity/webauthn.ts": {
+          "bytesInOutput": 4358
+        },
+        "src/identity/der.ts": {
+          "bytesInOutput": 3747
+        }
+      },
+      "bytes": 508396
+    }
+  }
+}
diff --git a/packages/identity/package.json b/packages/identity/package.json
index c74eff361..272a82d1c 100644
--- a/packages/identity/package.json
+++ b/packages/identity/package.json
@@ -4,7 +4,7 @@
   "author": "DFINITY Stiftung <sdk@dfinity.org>",
   "license": "Apache-2.0",
   "description": "JavaScript and TypeScript library to manage identity with the Internet Computer",
-  "homepage": "https://smartcontracts.org",
+  "homepage": "https://internetcomputer.org",
   "repository": {
     "type": "git",
     "url": "https://github.com/dfinity/agent-js.git",
@@ -48,24 +48,15 @@
   "peerDependencies": {
     "@dfinity/agent": "^0.14.1",
     "@dfinity/principal": "^0.14.1",
-    "crypto-browserify": "^3.12.0"
+    "@peculiar/webcrypto": "^1.4.0"
   },
   "dependencies": {
-    "@peculiar/webcrypto": "^1.4.0",
-    "bip39": "^3.0.4",
     "borc": "^2.1.1",
-    "bs58check": "^2.1.2",
     "js-sha256": "^0.9.0",
-    "secp256k1": "^4.0.2",
-    "stream": "^0.0.2",
-    "ts-node": "^10.8.2",
     "tweetnacl": "^1.0.1"
   },
   "devDependencies": {
-    "@types/bs58check": "^2.1.0",
-    "@types/hdkey": "^2.0.1",
     "@types/jest": "^28.1.4",
-    "@types/secp256k1": "^4.0.3",
     "@types/webappsec-credential-management": "^0.6.2",
     "@typescript-eslint/eslint-plugin": "^5.30.5",
     "@typescript-eslint/parser": "^5.30.5",
diff --git a/packages/identity/src/index.ts b/packages/identity/src/index.ts
index 24b5c3f79..e00d8780e 100644
--- a/packages/identity/src/index.ts
+++ b/packages/identity/src/index.ts
@@ -1,6 +1,16 @@
 export { Ed25519KeyIdentity, Ed25519PublicKey } from './identity/ed25519';
 export * from './identity/ecdsa';
-export { Secp256k1KeyIdentity, Secp256k1PublicKey } from './identity/secp256k1';
 export * from './identity/delegation';
 export { WebAuthnIdentity } from './identity/webauthn';
 export { wrapDER, unwrapDER, DER_COSE_OID, ED25519_OID } from './identity/der';
+
+/**
+ * @deprecated due to size of dependencies. Use `@dfinity/identity-secp256k1` instead.
+ */
+export class Secp256k1KeyIdentity {
+  constructor() {
+    throw new Error(
+      'Secp256k1KeyIdentity has been moved to a new repo: @dfinity/identity-secp256k1',
+    );
+  }
+}
diff --git a/packages/identity/tsconfig.json b/packages/identity/tsconfig.json
index 23da10189..2dffec2ed 100644
--- a/packages/identity/tsconfig.json
+++ b/packages/identity/tsconfig.json
@@ -18,6 +18,13 @@
     "strict": true,
     "target": "es2017"
   },
-  "include": ["types/*", "src/**/*", "client-test", "index.d.ts"],
+  "include": [
+    "types/*",
+    "src/**/*",
+    "client-test",
+    "index.d.ts",
+    "../identity-secp256k1/src/secp256k1.test.ts",
+    "../identity-secp256k1/hdkey.ts"
+  ],
   "references": [{ "path": "../agent" }]
 }