.github/funding.yml

@@ -1 +1,2 @@
 github: paulmillr
+# custom: https://paulmillr.com/funding/

.github/workflows/nodejs.yml

@@ -1,20 +1,17 @@
-name: Run node.js tests
+name: Node CI
-on:
+
-  - push
+on: [push, pull_request]
-  - pull_request
 jobs:
   test:
     name: v${{ matrix.node }} @ ubuntu-latest
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node:
+        node: [18, 20]
-          - 18
-          - 20
     steps:
-      - uses: actions/checkout@1e31de5234b9f8995739874a8ce0492dc87873e2 # v4
+    - uses: actions/checkout@v3
     - name: Use Node.js ${{ matrix.node }}
-        uses: actions/setup-node@8f152de45cc393bb48ce5d89d36b731f54556e65 # v4
+      uses: actions/setup-node@v3
       with:
         node-version: ${{ matrix.node }}
     - run: npm install

.github/workflows/publish-npm.yml

@@ -1,4 +1,4 @@
-name: Publish package to npm
+name: Publish Package to npm
 on:
  release:
    types: [created]
@@ -9,8 +9,8 @@ jobs:
      contents: read
      id-token: write
    steps:
-      - uses: actions/checkout@1e31de5234b9f8995739874a8ce0492dc87873e2 # v4
+     - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3
-      - uses: actions/setup-node@8f152de45cc393bb48ce5d89d36b731f54556e65 # v4
+     - uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c # v3
        with:
          node-version: 20
          registry-url: 'https://registry.npmjs.org'

.github/workflows/upload-release.yml

@@ -1,28 +0,0 @@
-name: Upload standalone file to GitHub Releases
-on:
-  release:
-    types: [created]
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: write
-      id-token: write
-    steps:
-      - uses: actions/checkout@1e31de5234b9f8995739874a8ce0492dc87873e2 # v4
-      - uses: actions/setup-node@8f152de45cc393bb48ce5d89d36b731f54556e65 # v4
-        with:
-          node-version: 20
-          registry-url: 'https://registry.npmjs.org'
-          cache: npm
-      - run: npm install -g npm
-      - run: npm ci
-      - run: npm run build
-      - run: |
-          cd build
-          npm ci
-          npm run build:release
-          cd ..
-      - run: gh release upload ${{ github.event.release.tag_name }} build/`npx jsbt outfile`
-        env:
-          GH_TOKEN: ${{ github.token }}

.gitignore

@@ -1,9 +1,13 @@
-node_modules
+build/
+node_modules/
+coverage/
 /*.js
+/*.ts
+/*.js.map
+/*.d.ts.map
 /esm/*.js
-*.d.ts
+/esm/*.ts
-*.d.ts.map
+/esm/*.js.map
-*.js.map
+/esm/*.d.ts.map
-/build
-/abstract
 /esm/abstract
+/abstract/

README.md

@@ -7,18 +7,14 @@ Audited & minimal JS implementation of elliptic curve cryptography.
 - 🏎 Ultra-fast, hand-optimized for caveats of JS engines
 - 🔍 Unique tests ensure correctness: property-based, cross-library and Wycheproof vectors, fuzzing
 - ➰ Short Weierstrass, Edwards, Montgomery curves
-- ✍️ ECDSA, EdDSA, Schnorr, BLS signature schemes, ECDH key agreement, hashing to curves
+- ✍️ ECDSA, EdDSA, Schnorr, BLS signature schemes, ECDH key agreement
 - 🔖 SUF-CMA, SBS (non-repudiation), ZIP215 (consensus friendliness) features for ed25519
+- #️⃣ hash-to-curve for encoding or hashing an arbitrary string to an elliptic curve point
 - 🧜‍♂️ Poseidon ZK-friendly hash
-- 🪶 178KB for everything, 25KB for single-curve build
 
-For discussions, questions and support, visit
+### This library belongs to _noble_ crypto
-[GitHub Discussions](https://github.com/paulmillr/noble-curves/discussions)
-section of the repository.
 
-### This library belongs to _noble_ cryptography
+> **noble-crypto** — high-security, easily auditable set of contained cryptographic libraries and tools.
-
-> **noble cryptography** — high-security, easily auditable set of contained cryptographic libraries and tools.
 
 - Zero or minimal dependencies
 - Highly readable TypeScript / JS code
@@ -26,10 +22,7 @@ section of the repository.
 - All libraries:
   [ciphers](https://github.com/paulmillr/noble-ciphers),
   [curves](https://github.com/paulmillr/noble-curves),
-  [hashes](https://github.com/paulmillr/noble-hashes),
+  [hashes](https://github.com/paulmillr/noble-hashes)
-  [post-quantum](https://github.com/paulmillr/noble-post-quantum),
-  4kb [secp256k1](https://github.com/paulmillr/noble-secp256k1) /
-  [ed25519](https://github.com/paulmillr/noble-ed25519)
 - [Check out homepage](https://paulmillr.com/noble/)
   for reading resources, documentation and apps built with noble
 
@@ -45,7 +38,7 @@ A standalone file [noble-curves.js](https://github.com/paulmillr/noble-curves/re
 ```js
 // import * from '@noble/curves'; // Error: use sub-imports, to ensure small app size
 import { secp256k1 } from '@noble/curves/secp256k1'; // ESM and Common.js
-// import { secp256k1 } from 'npm:@noble/curves@1.4.0/secp256k1'; // Deno
+// import { secp256k1 } from 'npm:@noble/curves@1.2.0/secp256k1'; // Deno
 ```
 
 - [Implementations](#implementations)
@@ -96,8 +89,6 @@ const privHex = '46c930bc7bb4db7f55da20798697421b98c4175a52c630294d75a84b9c12623
 const pub2 = secp256k1.getPublicKey(privHex);
 ```
 
-We support P256 (secp256r1), P384 (secp384r1), P521 (secp521r1).
-
 #### ECDSA public key recovery & extra entropy
 
 ```ts
@@ -246,7 +237,7 @@ Same RFC7748 / RFC8032 / IRTF draft are followed.
 
 #### bls12-381
 
-See [abstract/bls](#bls-barreto-lynn-scott-curves).
+See [abstract/bls](#abstractbls-barreto-lynn-scott-curves).
 
 #### All available imports
 
@@ -555,7 +546,7 @@ import { Field } from '@noble/curves/abstract/modular';
 const x25519 = montgomery({
   a: 486662n,
   Gu: 9n,
-  P: 2n ** 255n - 19n,
+  Fp: Field(2n ** 255n - 19n),
   montgomeryBits: 255,
   nByteLength: 32,
   // Optional param
@@ -613,12 +604,6 @@ const signature = bls.sign(message, privateKey);
 const isValid = bls.verify(signature, message, publicKey);
 console.log({ publicKey, signature, isValid });
 
-// Use custom DST, e.g. for Ethereum consensus layer
-const htfEthereum = {DST: 'BLS_SIG_BLS12381G2_XMD:SHA-256_SSWU_RO_POP_'};
-const signatureEth = bls.sign(message, privateKey, htfEthereum);
-const isValidEth = bls.verify(signature, message, publicKey, htfEthereum);
-console.log({ signatureEth, isValidEth });
-
 // Sign 1 msg with 3 keys
 const privateKeys = [
   '18f020b98eb798752a50ed0563b079c125b0db5dd0b1060d1c1b47d4a193e1e4',
@@ -771,7 +756,7 @@ and [RFC 9380](https://www.rfc-editor.org/rfc/rfc9380#section-5.2).
 This means, for 32-byte key, we would need 48-byte hash to get 2^-128 bias, which matches curve security level.
 
 `hashToPrivateScalar()` that hashes to **private key** was created for this purpose.
-Use [abstract/hash-to-curve](#hash-to-curve-hashing-strings-to-curve-points)
+Use [abstract/hash-to-curve](#abstracthash-to-curve-hashing-strings-to-curve-points)
 if you need to hash to **public key**.
 
 ```ts

build/README.md

@@ -1,7 +1,7 @@
 # build
 
-The directory is used to build a single file which contains everything.
+The directory is used to build a single file `noble-curves.js` which contains everything.
 
-The single file uses iife wrapper and can be used in browsers as-is.
+The output file uses iife wrapper and can be used in browsers as-is.
 
 Don't use it unless you can't use NPM/ESM, which support tree shaking.

build/input.js

@@ -1,4 +1,4 @@
-import { bytesToHex, concatBytes, hexToBytes, utf8ToBytes } from '@noble/curves/abstract/utils';
+import { bytesToHex, concatBytes, hexToBytes } from '@noble/curves/abstract/utils';
 
 export { secp256k1, schnorr as secp256k1_schnorr } from '@noble/curves/secp256k1';
 export {
@@ -17,4 +17,4 @@ export { p384 } from '@noble/curves/p384';
 export { p521 } from '@noble/curves/p521';
 export { bls12_381 } from '@noble/curves/bls12-381';
 
-export const utils = { bytesToHex, concatBytes, hexToBytes, utf8ToBytes };
+export const utils = { bytesToHex, concatBytes, hexToBytes };

build/package-lock.json

@@ -1,445 +0,0 @@
-{
-  "name": "build",
-  "version": "1.0.0",
-  "lockfileVersion": 3,
-  "requires": true,
-  "packages": {
-    "": {
-      "name": "build",
-      "version": "1.0.0",
-      "devDependencies": {
-        "@noble/curves": "file:..",
-        "esbuild": "0.20.1"
-      }
-    },
-    "..": {
-      "version": "1.4.0",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@noble/hashes": "1.4.0"
-      },
-      "devDependencies": {
-        "@paulmillr/jsbt": "0.1.0",
-        "fast-check": "3.0.0",
-        "micro-bmark": "0.3.1",
-        "micro-should": "0.4.0",
-        "prettier": "3.1.1",
-        "typescript": "5.3.2"
-      },
-      "funding": {
-        "url": "https://paulmillr.com/funding/"
-      }
-    },
-    "node_modules/@esbuild/aix-ppc64": {
-      "version": "0.20.1",
-      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.20.1.tgz",
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-      "cpu": [
-        "ppc64"
-      ],
-      "dev": true,
-      "optional": true,
-      "os": [
-        "aix"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/android-arm": {
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-      "integrity": "sha512-ZnWEyCM0G1Ex6JtsygvC3KUUrlDXqOihw8RicRuQAzw+c4f1D66YlPNNV3rkjVW90zXVsHwZYWbJh3v+oQFM9Q==",
-      "cpu": [
-        "x64"
-      ],
-      "dev": true,
-      "optional": true,
-      "os": [
-        "sunos"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/win32-arm64": {
-      "version": "0.20.1",
-      "resolved": "https://registry.npmjs.org/@esbuild/win32-arm64/-/win32-arm64-0.20.1.tgz",
-      "integrity": "sha512-QZ6gXue0vVQY2Oon9WyLFCdSuYbXSoxaZrPuJ4c20j6ICedfsDilNPYfHLlMH7vGfU5DQR0czHLmJvH4Nzis/A==",
-      "cpu": [
-        "arm64"
-      ],
-      "dev": true,
-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/win32-ia32": {
-      "version": "0.20.1",
-      "resolved": "https://registry.npmjs.org/@esbuild/win32-ia32/-/win32-ia32-0.20.1.tgz",
-      "integrity": "sha512-HzcJa1NcSWTAU0MJIxOho8JftNp9YALui3o+Ny7hCh0v5f90nprly1U3Sj1Ldj/CvKKdvvFsCRvDkpsEMp4DNw==",
-      "cpu": [
-        "ia32"
-      ],
-      "dev": true,
-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@esbuild/win32-x64": {
-      "version": "0.20.1",
-      "resolved": "https://registry.npmjs.org/@esbuild/win32-x64/-/win32-x64-0.20.1.tgz",
-      "integrity": "sha512-0MBh53o6XtI6ctDnRMeQ+xoCN8kD2qI1rY1KgF/xdWQwoFeKou7puvDfV8/Wv4Ctx2rRpET/gGdz3YlNtNACSA==",
-      "cpu": [
-        "x64"
-      ],
-      "dev": true,
-      "optional": true,
-      "os": [
-        "win32"
-      ],
-      "engines": {
-        "node": ">=12"
-      }
-    },
-    "node_modules/@noble/curves": {
-      "resolved": "..",
-      "link": true
-    },
-    "node_modules/esbuild": {
-      "version": "0.20.1",
-      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.20.1.tgz",
-      "integrity": "sha512-OJwEgrpWm/PCMsLVWXKqvcjme3bHNpOgN7Tb6cQnR5n0TPbQx1/Xrn7rqM+wn17bYeT6MGB5sn1Bh5YiGi70nA==",
-      "dev": true,
-      "hasInstallScript": true,
-      "bin": {
-        "esbuild": "bin/esbuild"
-      },
-      "engines": {
-        "node": ">=12"
-      },
-      "optionalDependencies": {
-        "@esbuild/aix-ppc64": "0.20.1",
-        "@esbuild/android-arm": "0.20.1",
-        "@esbuild/android-arm64": "0.20.1",
-        "@esbuild/android-x64": "0.20.1",
-        "@esbuild/darwin-arm64": "0.20.1",
-        "@esbuild/darwin-x64": "0.20.1",
-        "@esbuild/freebsd-arm64": "0.20.1",
-        "@esbuild/freebsd-x64": "0.20.1",
-        "@esbuild/linux-arm": "0.20.1",
-        "@esbuild/linux-arm64": "0.20.1",
-        "@esbuild/linux-ia32": "0.20.1",
-        "@esbuild/linux-loong64": "0.20.1",
-        "@esbuild/linux-mips64el": "0.20.1",
-        "@esbuild/linux-ppc64": "0.20.1",
-        "@esbuild/linux-riscv64": "0.20.1",
-        "@esbuild/linux-s390x": "0.20.1",
-        "@esbuild/linux-x64": "0.20.1",
-        "@esbuild/netbsd-x64": "0.20.1",
-        "@esbuild/openbsd-x64": "0.20.1",
-        "@esbuild/sunos-x64": "0.20.1",
-        "@esbuild/win32-arm64": "0.20.1",
-        "@esbuild/win32-ia32": "0.20.1",
-        "@esbuild/win32-x64": "0.20.1"
-      }
-    }
-  }
-}

build/package.json

@@ -2,13 +2,17 @@
   "name": "build",
   "private": true,
   "version": "1.0.0",
+  "description": "Used to build a single file",
   "main": "input.js",
+  "keywords": [],
   "type": "module",
+  "author": "",
+  "license": "MIT",
   "devDependencies": {
-    "@noble/curves": "file:..",
+    "@noble/curves": "..",
-    "esbuild": "0.20.1"
+    "esbuild": "0.18.11"
   },
   "scripts": {
-    "build:release": "npx esbuild --bundle input.js --outfile=`npx jsbt outfile` --global-name=`npx jsbt global`"
+    "build": "npx esbuild --bundle input.js --outfile=noble-curves.js --global-name=nobleCurves"
   }
 }

package-lock.json

@@ -1,18 +1,17 @@
 {
-  "name": "@tornado/noble-curves",
+  "name": "@noble/curves",
-  "version": "1.4.0",
+  "version": "1.3.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "@tornado/noble-curves",
+      "name": "@noble/curves",
-      "version": "1.4.0",
+      "version": "1.3.0",
       "license": "MIT",
       "dependencies": {
-        "@noble/hashes": "1.4.0"
+        "@noble/hashes": "1.3.3"
       },
       "devDependencies": {
-        "@paulmillr/jsbt": "0.1.0",
         "fast-check": "3.0.0",
         "micro-bmark": "0.3.1",
         "micro-should": "0.4.0",
@@ -24,9 +23,9 @@
       }
     },
     "node_modules/@noble/hashes": {
-      "version": "1.4.0",
+      "version": "1.3.3",
-      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.4.0.tgz",
+      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.3.3.tgz",
-      "integrity": "sha512-V1JJ1WTRUqHHrOSh597hURcMqVKVGL/ea3kv0gSnEdsEZ0/+VyPghM1lMNGc00z7CIQorSvbKpuJkxvuHbvdbg==",
+      "integrity": "sha512-V7/fPHgl+jsVPXqqeOzT8egNj2iBIVt+ECeMMG8TdcnTikP3oaBtUVqpT/gYCR68aEBJSF+XbYUxStjbFMqIIA==",
       "engines": {
         "node": ">= 16"
       },
@@ -34,15 +33,6 @@
         "url": "https://paulmillr.com/funding/"
       }
     },
-    "node_modules/@paulmillr/jsbt": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/@paulmillr/jsbt/-/jsbt-0.1.0.tgz",
-      "integrity": "sha512-TdowoHD36hkZARv6LW4jenkVTdK2vP0sy4ZM8E9MxaqAAIRdwmn3RlB+zWkEHi4hKTgLqMGkURfNkFtt0STX2Q==",
-      "dev": true,
-      "bin": {
-        "jsbt": "jsbt.js"
-      }
-    },
     "node_modules/fast-check": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/fast-check/-/fast-check-3.0.0.tgz",

package.json

@@ -1,6 +1,6 @@
 {
-  "name": "@tornado/noble-curves",
+  "name": "@noble/curves",
-  "version": "1.4.0",
+  "version": "1.3.0",
   "description": "Audited & minimal JS implementation of elliptic curve cryptography",
   "files": [
     "abstract",
@@ -14,7 +14,7 @@
   "scripts": {
     "bench": "cd benchmark; node secp256k1.js; node curves.js; node ecdh.js; node hash-to-curve.js; node modular.js; node bls.js; node ristretto255.js; node decaf448.js",
     "build": "tsc && tsc -p tsconfig.esm.json",
-    "build:release": "cd build && npm i && npm run build",
+    "build:release": "cd build; npm install && npm run build",
     "build:clean": "rm *.{js,d.ts,d.ts.map,js.map} esm/*.{js,d.ts,d.ts.map,js.map} 2> /dev/null",
     "lint": "prettier --check 'src/**/*.{js,ts}' 'test/*.js'",
     "format": "prettier --write 'src/**/*.{js,ts}' 'test/*.js'",
@@ -24,14 +24,13 @@
   "homepage": "https://paulmillr.com/noble/",
   "repository": {
     "type": "git",
-    "url": "https://git.tornado.ws/tornado-packages/noble-curvest"
+    "url": "https://github.com/paulmillr/noble-curves.git"
   },
   "license": "MIT",
   "dependencies": {
-    "@noble/hashes": "1.4.0"
+    "@noble/hashes": "1.3.3"
   },
   "devDependencies": {
-    "@paulmillr/jsbt": "0.1.0",
     "fast-check": "3.0.0",
     "micro-bmark": "0.3.1",
     "micro-should": "0.4.0",

src/abstract/bls.ts

@@ -83,12 +83,12 @@ export type CurveFn<Fp, Fp2, Fp6, Fp12> = {
   getPublicKey: (privateKey: PrivKey) => Uint8Array;
   getPublicKeyForShortSignatures: (privateKey: PrivKey) => Uint8Array;
   sign: {
-    (message: Hex, privateKey: PrivKey, htfOpts?: htfBasicOpts): Uint8Array;
+    (message: Hex, privateKey: PrivKey): Uint8Array;
-    (message: ProjPointType<Fp2>, privateKey: PrivKey, htfOpts?: htfBasicOpts): ProjPointType<Fp2>;
+    (message: ProjPointType<Fp2>, privateKey: PrivKey): ProjPointType<Fp2>;
   };
   signShortSignature: {
-    (message: Hex, privateKey: PrivKey, htfOpts?: htfBasicOpts): Uint8Array;
+    (message: Hex, privateKey: PrivKey): Uint8Array;
-    (message: ProjPointType<Fp>, privateKey: PrivKey, htfOpts?: htfBasicOpts): ProjPointType<Fp>;
+    (message: ProjPointType<Fp>, privateKey: PrivKey): ProjPointType<Fp>;
   };
   verify: (
     signature: Hex | ProjPointType<Fp2>,

src/abstract/hash-to-curve.ts

@@ -2,7 +2,7 @@
 import type { Group, GroupConstructor, AffinePoint } from './curve.js';
 import { mod, IField } from './modular.js';
 import type { CHash } from './utils.js';
-import { bytesToNumberBE, abytes, concatBytes, utf8ToBytes, validateObject } from './utils.js';
+import { bytesToNumberBE, isBytes, concatBytes, utf8ToBytes, validateObject } from './utils.js';
 
 /**
  * * `DST` is a domain separation tag, defined in section 2.2.5
@@ -22,6 +22,12 @@ export type Opts = {
   hash: CHash;
 };
 
+function validateDST(dst: UnicodeOrBytes): Uint8Array {
+  if (isBytes(dst)) return dst;
+  if (typeof dst === 'string') return utf8ToBytes(dst);
+  throw new Error('DST must be Uint8Array or string');
+}
+
 // Octet Stream to Integer. "spec" implementation of os2ip is 2.5x slower vs bytesToNumberBE.
 const os2ip = bytesToNumberBE;
 
@@ -46,7 +52,10 @@ function strxor(a: Uint8Array, b: Uint8Array): Uint8Array {
   return arr;
 }
 
-function anum(item: unknown): void {
+function abytes(item: unknown): void {
+  if (!isBytes(item)) throw new Error('Uint8Array expected');
+}
+function isNum(item: unknown): void {
   if (!Number.isSafeInteger(item)) throw new Error('number expected');
 }
 
@@ -60,7 +69,7 @@ export function expand_message_xmd(
 ): Uint8Array {
   abytes(msg);
   abytes(DST);
-  anum(lenInBytes);
+  isNum(lenInBytes);
   // https://www.rfc-editor.org/rfc/rfc9380#section-5.3.3
   if (DST.length > 255) DST = H(concatBytes(utf8ToBytes('H2C-OVERSIZE-DST-'), DST));
   const { outputLen: b_in_bytes, blockLen: r_in_bytes } = H;
@@ -94,7 +103,7 @@ export function expand_message_xof(
 ): Uint8Array {
   abytes(msg);
   abytes(DST);
-  anum(lenInBytes);
+  isNum(lenInBytes);
   // https://www.rfc-editor.org/rfc/rfc9380#section-5.3.3
   // DST = H('H2C-OVERSIZE-DST-' || a_very_long_DST, Math.ceil((lenInBytes * k) / 8));
   if (DST.length > 255) {
@@ -132,8 +141,8 @@ export function hash_to_field(msg: Uint8Array, count: number, options: Opts): bi
   });
   const { p, k, m, hash, expand, DST: _DST } = options;
   abytes(msg);
-  anum(count);
+  isNum(count);
-  const DST = typeof _DST === 'string' ? utf8ToBytes(_DST) : _DST;
+  const DST = validateDST(_DST);
   const log2p = p.toString(2).length;
   const L = Math.ceil((log2p + k) / 8); // section 5.1 of ietf draft link above
   const len_in_bytes = count * m * L;

src/abstract/utils.ts

@@ -23,10 +23,6 @@ export function isBytes(a: unknown): a is Uint8Array {
   );
 }
 
-export function abytes(item: unknown): void {
-  if (!isBytes(item)) throw new Error('Uint8Array expected');
-}
-
 // Array where index 0xf0 (240) is mapped to string 'f0'
 const hexes = /* @__PURE__ */ Array.from({ length: 256 }, (_, i) =>
   i.toString(16).padStart(2, '0')
@@ -35,7 +31,7 @@ const hexes = /* @__PURE__ */ Array.from({ length: 256 }, (_, i) =>
  * @example bytesToHex(Uint8Array.from([0xca, 0xfe, 0x01, 0x23])) // 'cafe0123'
  */
 export function bytesToHex(bytes: Uint8Array): string {
-  abytes(bytes);
+  if (!isBytes(bytes)) throw new Error('Uint8Array expected');
   // pre-caching improves the speed 6x
   let hex = '';
   for (let i = 0; i < bytes.length; i++) {
@@ -90,7 +86,7 @@ export function bytesToNumberBE(bytes: Uint8Array): bigint {
   return hexToNumber(bytesToHex(bytes));
 }
 export function bytesToNumberLE(bytes: Uint8Array): bigint {
-  abytes(bytes);
+  if (!isBytes(bytes)) throw new Error('Uint8Array expected');
   return hexToNumber(bytesToHex(Uint8Array.from(bytes).reverse()));
 }
 
@@ -142,11 +138,12 @@ export function concatBytes(...arrays: Uint8Array[]): Uint8Array {
   let sum = 0;
   for (let i = 0; i < arrays.length; i++) {
     const a = arrays[i];
-    abytes(a);
+    if (!isBytes(a)) throw new Error('Uint8Array expected');
     sum += a.length;
   }
-  const res = new Uint8Array(sum);
+  let res = new Uint8Array(sum);
-  for (let i = 0, pad = 0; i < arrays.length; i++) {
+  let pad = 0;
+  for (let i = 0; i < arrays.length; i++) {
     const a = arrays[i];
     res.set(a, pad);
     pad += a.length;
@@ -198,9 +195,9 @@ export function bitGet(n: bigint, pos: number) {
 /**
  * Sets single bit at position.
  */
-export function bitSet(n: bigint, pos: number, value: boolean) {
+export const bitSet = (n: bigint, pos: number, value: boolean) => {
   return n | ((value ? _1n : _0n) << BigInt(pos));
-}
+};
 
 /**
  * Calculate mask for N bits. Not using ** operator with bigints because of old engines.

src/abstract/weierstrass.ts

@@ -27,7 +27,7 @@ export type BasicWCurve<T> = BasicCurve<T> & {
   clearCofactor?: (c: ProjConstructor<T>, point: ProjPointType<T>) => ProjPointType<T>;
 };
 
-type Entropy = Hex | boolean;
+type Entropy = Hex | true;
 export type SignOpts = { lowS?: boolean; extraEntropy?: Entropy; prehash?: boolean };
 export type VerOpts = { lowS?: boolean; prehash?: boolean };
 
@@ -158,7 +158,7 @@ export const DER = {
     // parse DER signature
     const { Err: E } = DER;
     const data = typeof hex === 'string' ? h2b(hex) : hex;
-    ut.abytes(data);
+    if (!ut.isBytes(data)) throw new Error('ui8a expected');
     let l = data.length;
     if (l < 2 || data[0] != 0x30) throw new E('Invalid signature tag');
     if (data[1] !== l - 2) throw new E('Invalid signature: incorrect length');
@@ -733,13 +733,7 @@ export function weierstrass(curveDef: CurveType): CurveFn {
         const x = ut.bytesToNumberBE(tail);
         if (!isValidFieldElement(x)) throw new Error('Point is not on curve');
         const y2 = weierstrassEquation(x); // y² = x³ + ax + b
-        let y: bigint;
+        let y = Fp.sqrt(y2); // y = y² ^ (p+1)/4
-        try {
-          y = Fp.sqrt(y2); // y = y² ^ (p+1)/4
-        } catch (sqrtError) {
-          const suffix = sqrtError instanceof Error ? ': ' + sqrtError.message : '';
-          throw new Error('Point is not on curve' + suffix);
-        }
         const isYOdd = (y & _1n) === _1n;
         // ECDSA
         const isHeadOdd = (head & 1) === 1;
@@ -977,7 +971,7 @@ export function weierstrass(curveDef: CurveType): CurveFn {
     const d = normPrivateKeyToScalar(privateKey); // validate private key, convert to bigint
     const seedArgs = [int2octets(d), int2octets(h1int)];
     // extraEntropy. RFC6979 3.6: additional k' (optional).
-    if (ent != null && ent !== false) {
+    if (ent != null) {
       // K = HMAC_K(V || 0x00 || int2octets(x) || bits2octets(h1) || k')
       const e = ent === true ? randomBytes(Fp.BYTES) : ent; // generate random bytes OR pass as-is
       seedArgs.push(ensureBytes('extraEntropy', e)); // check for being bytes

src/bls12-381.ts

@@ -1364,7 +1364,7 @@ export const bls12_381: CurveFn<Fp, Fp2, Fp6, Fp12> = bls({
       fromHex(hex: Hex): ProjPointType<Fp2> {
         const { infinity, sort, value } = parseMask(ensureBytes('signatureHex', hex));
         const P = Fp.ORDER;
-        const half = value.length / 2;
+        const half = hex.length / 2;
         if (half !== 48 && half !== 96)
           throw new Error('Invalid compressed signature length, must be 96 or 192');
         const z1 = bytesToNumberBE(value.slice(0, half));

src/package.json

@@ -1,3 +0,0 @@
-{
-  "type": "module"
-}

test/basic.test.js

@@ -2,7 +2,7 @@ import { deepStrictEqual, throws } from 'assert';
 import { should, describe } from 'micro-should';
 import * as fc from 'fast-check';
 import * as mod from '../esm/abstract/modular.js';
-import { bytesToHex, isBytes, bytesToHex as toHex } from '../esm/abstract/utils.js';
+import { bytesToHex as toHex } from '../esm/abstract/utils.js';
 // Generic tests for all curves in package
 import { secp192r1, secp224r1 } from './_more-curves.helpers.js';
 import { secp256r1 } from '../esm/p256.js';
@@ -595,18 +595,6 @@ for (const name in CURVES) {
         { numRuns: NUM_RUNS }
       )
     );
-    should('.verify() should verify random signatures in hex', () =>
-      fc.assert(
-        fc.property(fc.hexaString({ minLength: 64, maxLength: 64 }), (msg) => {
-          const priv = toHex(C.utils.randomPrivateKey());
-          const pub = toHex(C.getPublicKey(priv));
-          const sig = C.sign(msg, priv);
-          let sighex = isBytes(sig) ? toHex(sig) : sig.toCompactHex();
-          deepStrictEqual(C.verify(sighex, msg, pub), true, `priv=${priv},pub=${pub},msg=${msg}`);
-        }),
-        { numRuns: NUM_RUNS }
-      )
-    );
     should('.verify() should verify empty signatures', () => {
       const msg = new Uint8Array([]);
       const priv = C.utils.randomPrivateKey();

test/bls12-381.test.js

@@ -1173,8 +1173,6 @@ describe('verify()', () => {
       const pub = bls.getPublicKey(priv);
       const res = bls.verify(sig, msg, pub);
       deepStrictEqual(res, true, `${priv}-${msg}`);
-      const resHex = bls.verify(bytesToHex(sig), msg, pub);
-      deepStrictEqual(resHex, true, `${priv}-${msg}-hex`);
     }
   });
   should('not verify signature with wrong message', () => {
@@ -1195,8 +1193,6 @@ describe('verify()', () => {
       const invPub = bls.getPublicKey(invPriv);
       const res = bls.verify(sig, msg, invPub);
       deepStrictEqual(res, false);
-      const resHex = bls.verify(bytesToHex(sig), msg, invPub);
-      deepStrictEqual(resHex, false);
     }
   });
   should('verify signed message (short signatures)', () => {
@@ -1206,8 +1202,6 @@ describe('verify()', () => {
       const pub = bls.getPublicKeyForShortSignatures(priv);
       const res = bls.verifyShortSignature(sig, msg, pub);
       deepStrictEqual(res, true, `${priv}-${msg}`);
-      const resHex = bls.verifyShortSignature(bytesToHex(sig), msg, pub);
-      deepStrictEqual(resHex, true, `${priv}-${msg}`);
     }
   });
   should('not verify signature with wrong message (short signatures)', () => {
@@ -1218,8 +1212,6 @@ describe('verify()', () => {
       const pub = bls.getPublicKeyForShortSignatures(priv);
       const res = bls.verifyShortSignature(sig, invMsg, pub);
       deepStrictEqual(res, false);
-      const resHex = bls.verifyShortSignature(bytesToHex(sig), invMsg, pub);
-      deepStrictEqual(resHex, false);
     }
   });
   should('not verify signature with wrong key', () => {
@@ -1230,8 +1222,6 @@ describe('verify()', () => {
       const invPub = bls.getPublicKeyForShortSignatures(invPriv);
       const res = bls.verifyShortSignature(sig, msg, invPub);
       deepStrictEqual(res, false);
-      const resHex = bls.verifyShortSignature(bytesToHex(sig), msg, invPub);
-      deepStrictEqual(resHex, false);
     }
   });
   describe('batch', () => {
@@ -1244,10 +1234,6 @@ describe('verify()', () => {
           const signatures = messages.map((message, i) => bls.sign(message, privateKeys[i]));
           const aggregatedSignature = bls.aggregateSignatures(signatures);
           deepStrictEqual(bls.verifyBatch(aggregatedSignature, messages, publicKey), true);
-          deepStrictEqual(
-            bls.verifyBatch(bytesToHex(aggregatedSignature), messages, publicKey),
-            true
-          );
         })
       );
     });
@@ -1266,10 +1252,6 @@ describe('verify()', () => {
             bls.verifyBatch(aggregatedSignature, wrongMessages, publicKey),
             messages.every((m, i) => m === wrongMessages[i])
           );
-          deepStrictEqual(
-            bls.verifyBatch(bytesToHex(aggregatedSignature), wrongMessages, publicKey),
-            messages.every((m, i) => m === wrongMessages[i])
-          );
         })
       );
     });
@@ -1292,10 +1274,6 @@ describe('verify()', () => {
               bls.verifyBatch(aggregatedSignature, messages, wrongPublicKeys),
               wrongPrivateKeys.every((p, i) => p === privateKeys[i])
             );
-            deepStrictEqual(
-              bls.verifyBatch(bytesToHex(aggregatedSignature), messages, wrongPublicKeys),
-              wrongPrivateKeys.every((p, i) => p === privateKeys[i])
-            );
           }
         )
       );
@@ -1309,10 +1287,6 @@ describe('verify()', () => {
           const aggregatedSignature = bls.aggregateSignatures(signatures);
           const aggregatedPublicKey = bls.aggregatePublicKeys(publicKey);
           deepStrictEqual(bls.verify(aggregatedSignature, message, aggregatedPublicKey), true);
-          deepStrictEqual(
-            bls.verify(bytesToHex(aggregatedSignature), message, aggregatedPublicKey),
-            true
-          );
         })
       );
     });
@@ -1328,10 +1302,6 @@ describe('verify()', () => {
             bls.verify(aggregatedSignature, wrongMessage, aggregatedPublicKey),
             message === wrongMessage
           );
-          deepStrictEqual(
-            bls.verify(bytesToHex(aggregatedSignature), wrongMessage, aggregatedPublicKey),
-            message === wrongMessage
-          );
         })
       );
     });

tsconfig.esm.json

@@ -1,9 +1,24 @@
 {
-  "extends": "@paulmillr/jsbt/tsconfigs/esm.json",
   "compilerOptions": {
     "outDir": "esm",
-    "target": "ES2015"
+    "target": "es2020",
+    "module": "es6",
+    "moduleResolution": "bundler",
+    "baseUrl": ".",
+    "paths": {
+      "@noble/hashes/crypto": ["src/crypto"]
     },
-  "include": ["index.ts", "src"],
+    "sourceMap": true,
+    "strict": true,
+    "allowSyntheticDefaultImports": false,
+    "allowUnreachableCode": false,
+    "esModuleInterop": false,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitReturns": true,
+    "noUncheckedIndexedAccess": false,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+  },
+  "include": ["src"],
   "exclude": ["node_modules", "lib"]
 }

tsconfig.json

@@ -1,9 +1,24 @@
 {
-  "extends": "@paulmillr/jsbt/tsconfigs/cjs.json",
   "compilerOptions": {
     "outDir": ".",
-    "target": "ES2015"
+    "target": "es2020",
+    "lib": ["es2020"], // Set explicitly to remove DOM
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "baseUrl": ".",
+    "sourceMap": true,
+    "declaration": true,
+    "declarationMap": true,
+    "strict": true,
+    "allowSyntheticDefaultImports": false,
+    "allowUnreachableCode": false,
+    "esModuleInterop": false,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitReturns": true,
+    "noUncheckedIndexedAccess": false,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true
   },
-  "include": ["index.ts", "src"],
+  "include": ["src"],
-  "exclude": ["node_modules", "lib"]
+  "exclude": ["node_modules", "*.d.ts"]
 }