Update readme

Add support for RSA algorithm

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: tsndr

.github/workflows/lint.yml

@@ -1,19 +0,0 @@
-name: Lint
-
-on:
-  pull_request:
-    branches: [ main ]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-      - name: Use Node.js
-        uses: actions/setup-node@v1
-        with:
-          node-version: 15.x
-      - run: npm ci
-      - run: npm run lint --if-present

README.md

@@ -13,7 +13,7 @@ A lightweight JWT implementation with ZERO dependencies for Cloudflare Workers.
 ## Install
 
 ```
-npm i @tsndr/cloudflare-worker-jwt
+npm i -D @tsndr/cloudflare-worker-jwt
 ```
 
 
@@ -70,7 +70,7 @@ async () => {
 
 <hr>
 
-### `jwt.sign(payload, secret, [algorithm])`
+### `jwt.sign(payload, secret, [options])`
 
 Signs a payload and returns the token.
 
@@ -80,14 +80,14 @@ Argument    | Type     | Satus    | Default | Description
 ----------- | -------- | -------- | ------- | -----------
 `payload`   | `object` | required | -       | The payload object. To use `nbf` (Not Before) and/or `exp` (Expiration Time) add `nbf` and/or `exp` to the payload.
 `secret`    | `string` | required | -       | A string which is used to sign the payload.
-`algorithm` | `string` | optional | `HS256` | The algorithm used to sign the payload, possible values: `HS256` or `HS512`
+`options`   | `object`, `string` | optional | `{ algorithm: 'HS256' }` | The options object supporting `algorithm` and `keyid` or just the algorithm string. (See [Available Algorithms](#available-algorithms))
 
 #### `return`
 Returns token as a `string`.
 
 <hr>
 
-### `jwt.verify(token, secret, [algorithm])`
+### `jwt.verify(token, secret, [options])`
 
 Verifies the integrity of the token and returns a boolean value.
 
@@ -95,7 +95,7 @@ Argument    | Type     | Satus    | Default | Description
 ----------- | -------- | -------- | ------- | -----------
 `token`     | `string` | required | -       | The token string generated by `jwt.sign()`.
 `secret`    | `string` | required | -       | The string which was used to sign the payload.
-`algorithm` | `string` | optional | `HS256` | The algorithm used to sign the payload, possible values: `HS256` or `HS512`
+`algorithm` | `object`, `string` | optional | `{ algorithm: 'HS256', throwError: false }` | The options object supporting `algorithm` or just the algorithm string. (See [Available Algorithms](#available-algorithms))
 
 #### `return`
 Returns `true` if signature, `nbf` (if set) and `exp` (if set) are valid, otherwise returns `false`. 
@@ -112,3 +112,14 @@ Argument    | Type     | Satus    | Default | Description
 
 #### `return`
 Returns payload `object`.
+
+### Available Algorithms
+ - ES256
+ - ES384
+ - ES512
+ - HS256
+ - HS384
+ - HS512
+ - RS256
+ - RS384
+ - RS512

index.d.ts

@@ -12,20 +12,22 @@ declare class JWT {
      * 
      * @param {object} payload The payload object. To use `nbf` (Not Before) and/or `exp` (Expiration Time) add `nbf` and/or `exp` to the payload.
      * @param {string} secret A string which is used to sign the payload.
-     * @param {'HS256' | 'HS512'} [algorithm=HS256] The algorithm used to sign the payload, possible values: `HS256` or `HS512`
+     * @param {JWTSignOptions | JWTAlgorithm} options The options object or the algorithm.
+     * @throws {Error} If there's a validation issue.
      * @returns {Promise<string>} Returns token as a `string`.
      */
-    sign(payload: object, secret: string, algorithm?: "HS256" | "HS512"): Promise<string>
+    sign(payload: object, secret: string, options?: JWTSignOptions | JWTAlgorithm): Promise<string>
 
     /**
      * Verifies the integrity of the token and returns a boolean value.
      * 
      * @param {string} token The token string generated by `jwt.sign()`.
      * @param {string} secret The string which was used to sign the payload.
-     * @param {'HS256' | 'HS512'} [algorithm=HS256] The algorithm used to sign the payload, possible values: `HS256` or `HS512`
+     * @param {JWTVerifyOptions | JWTAlgorithm} options The options object or the algorithm.
+     * @throws {Error | string} Throws an error `string` if the token is invalid or an `Error-Object` if there's a validation issue.
      * @returns {Promise<boolean>} Returns `true` if signature, `nbf` (if set) and `exp` (if set) are valid, otherwise returns `false`. 
      */
-    verify(token: string, secret: string, algorithm?: "HS256" | "HS512"): Promise<boolean>
+    verify(token: string, secret: string, options?: JWTVerifyOptions | JWTAlgorithm): Promise<boolean>
 
     /**
      * Returns the payload **without** verifying the integrity of the token. Please use `jwt.verify()` first to keep your application secure!
@@ -36,4 +38,17 @@ declare class JWT {
     decode(token: string): object | null
 }
 declare const _exports: JWT
+
+type JWTAlgorithm = 'ES256' | 'ES384' | 'ES512' | 'HS256' | 'HS384' | 'HS512' | 'RS256' | 'RS384' | 'RS512'
+
+type JWTSignOptions = {
+    algorithm?: JWTAlgorithm,
+    keyid?: string
+}
+
+type JWTVerifyOptions = {
+    algorithm?: JWTAlgorithm
+    throwError?: boolean
+}
+
 export = _exports

index.js

@@ -9,26 +9,31 @@ class Base64URL {
 
 class JWT {
     constructor() {
-        if (!crypto || !crypto.subtle)
+        if (typeof crypto === 'undefined' || !crypto.subtle)
             throw new Error('Crypto not supported!')
         this.algorithms = {
-            HS256: {
+            ES256: { name: 'ECDSA', namedCurve: 'P-256', hash: { name: 'SHA-256' } },
-                name: 'HMAC',
+            ES384: { name: 'ECDSA', namedCurve: 'P-384', hash: { name: 'SHA-384' } },
-                hash: {
+            ES512: { name: 'ECDSA', namedCurve: 'P-512', hash: { name: 'SHA-512' } },
-                    name: 'SHA-256'
+            HS256: { name: 'HMAC', hash: { name: 'SHA-256' } },
-                }
+            HS384: { name: 'HMAC', hash: { name: 'SHA-384' } },
-            },
+            HS512: { name: 'HMAC', hash: { name: 'SHA-512' } },
-            HS512: {
+            RS256: { name: 'RSASSA-PKCS1-v1_5', hash: { name: 'SHA-256' } },
-                name: 'HMAC',
+            RS384: { name: 'RSASSA-PKCS1-v1_5', hash: { name: 'SHA-384' } },
-                hash: {
+            RS512: { name: 'RSASSA-PKCS1-v1_5', hash: { name: 'SHA-512' } },
-                    name: 'SHA-512'
-                }
-            }
         }
     }
     _utf8ToUint8Array(str) {
         return Base64URL.parse(btoa(unescape(encodeURIComponent(str))))
     }
+    _str2ab(str) {
+        const buf = new ArrayBuffer(str.length);
+        const bufView = new Uint8Array(buf);
+        for (let i = 0, strLen = str.length; i < strLen; i++) {
+            bufView[i] = str.charCodeAt(i);
+        }
+        return buf;
+    }
     _decodePayload(raw) {
         switch (raw.length % 4) {
             case 0:
@@ -48,57 +53,68 @@ class JWT {
             return null
         }
     }
-    async sign(payload, secret, algorithm = 'HS256') {
+    async sign(payload, secret, options = { algorithm: 'HS256' }) {
+        if (typeof options === 'string')
+            options = { algorithm: options }
         if (payload === null || typeof payload !== 'object')
             throw new Error('payload must be an object')
         if (typeof secret !== 'string')
             throw new Error('secret must be a string')
-        if (typeof algorithm !== 'string')
+        if (typeof options.algorithm !== 'string')
-            throw new Error('algorithm must be a string')
+            throw new Error('options.algorithm must be a string')
-        const importAlgorithm = this.algorithms[algorithm]
+        const importAlgorithm = this.algorithms[options.algorithm]
         if (!importAlgorithm)
             throw new Error('algorithm not found')
         payload.iat = Math.floor(Date.now() / 1000)
         const payloadAsJSON = JSON.stringify(payload)
-        const partialToken = `${Base64URL.stringify(this._utf8ToUint8Array(JSON.stringify({ alg: algorithm, typ: 'JWT' })))}.${Base64URL.stringify(this._utf8ToUint8Array(payloadAsJSON))}`
+        const partialToken = `${Base64URL.stringify(this._utf8ToUint8Array(JSON.stringify({ alg: options.algorithm, kid: options.keyid })))}.${Base64URL.stringify(this._utf8ToUint8Array(payloadAsJSON))}`
-        const key = await crypto.subtle.importKey('raw', this._utf8ToUint8Array(secret), importAlgorithm, false, ['sign'])
+        let keyFormat = 'raw'
-        const characters = payloadAsJSON.split('')
+        let keyData
-        const it = this._utf8ToUint8Array(payloadAsJSON).entries()
+        if (secret.startsWith('-----BEGIN')) {
-        let i = 0
+            keyFormat = 'pkcs8'
-        const result = []
+            keyData = this._str2ab(atob(secret.replace(/-----BEGIN.*?-----/g, '').replace(/-----END.*?-----/g, '').replace(/\s/g, '')))
-        let current
+        } else
-        while (!(current = it.next()).done) {
+            keyData = this._utf8ToUint8Array(secret)
-            result.push([current.value[1], characters[i]])
+        const key = await crypto.subtle.importKey(keyFormat, keyData, importAlgorithm, false, ['sign'])
-            i++
+        const signature = await crypto.subtle.sign(importAlgorithm, key, this._utf8ToUint8Array(partialToken))
-        }
-        const signature = await crypto.subtle.sign(importAlgorithm.name, key, this._utf8ToUint8Array(partialToken))
         return `${partialToken}.${Base64URL.stringify(new Uint8Array(signature))}`
     }
-    async verify(token, secret, algorithm = 'HS256') {
+    async verify(token, secret, options = { algorithm: 'HS256', throwError: false }) {
+        if (typeof options === 'string')
+            options = { algorithm: options }
         if (typeof token !== 'string')
             throw new Error('token must be a string')
         if (typeof secret !== 'string')
             throw new Error('secret must be a string')
-        if (typeof algorithm !== 'string')
+        if (typeof options.algorithm !== 'string')
-            throw new Error('algorithm must be a string')
+            throw new Error('options.algorithm must be a string')
         const tokenParts = token.split('.')
         if (tokenParts.length !== 3)
-            throw new Error('token must have 3 parts')
+            throw new Error('token must consist of 3 parts')
-        const importAlgorithm = this.algorithms[algorithm]
+        const importAlgorithm = this.algorithms[options.algorithm]
         if (!importAlgorithm)
             throw new Error('algorithm not found')
-        const keyData = this._utf8ToUint8Array(secret)
+        const payload = this.decode(token)
-        const key = await crypto.subtle.importKey('raw', keyData, importAlgorithm, false, ['sign'])
+        if (payload.nbf && payload.nbf > Math.floor(Date.now() / 1000)) {
-        const partialToken = tokenParts.slice(0, 2).join('.')
+            if (options.throwError)
-        const payload = this._decodePayload(tokenParts[1].replace(/-/g, '+').replace(/_/g, '/'))
+                throw 'NOT_YET_VALID'
-        if (payload.nbf && payload.nbf >= Math.floor(Date.now() / 1000))
             return false
-        if (payload.exp && payload.exp < Math.floor(Date.now() / 1000))
+        }
+        if (payload.exp && payload.exp <= Math.floor(Date.now() / 1000)) {
+            if (options.throwError)
+                throw 'EXPIRED'
             return false
-        const signaturePart = tokenParts[2]
+        }
-        const messageAsUint8Array = this._utf8ToUint8Array(partialToken)
+        let keyFormat = 'raw'
-        const res = await crypto.subtle.sign(importAlgorithm.name, key, messageAsUint8Array)
+        let keyData
-        return Base64URL.stringify(new Uint8Array(res)) === signaturePart
+        if (secret.startsWith('-----BEGIN')) {
+            keyFormat = 'pkcs8'
+            keyData = this._str2ab(atob(secret.replace(/-----BEGIN.*?-----/g, '').replace(/-----END.*?-----/g, '').replace(/\s/g, '')))
+        } else
+            keyData = this._utf8ToUint8Array(secret)
+        const key = await crypto.subtle.importKey(keyFormat, keyData, importAlgorithm, false, ['sign'])
+        const res = await crypto.subtle.sign(importAlgorithm, key, this._utf8ToUint8Array(tokenParts.slice(0, 2).join('.')))
+        return Base64URL.stringify(new Uint8Array(res)) === tokenParts[2]
     }
     decode(token) {
         return this._decodePayload(token.split('.')[1].replace(/-/g, '+').replace(/_/g, '/'))

package-lock.json

@@ -1,754 +0,0 @@
-{
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-  "version": "1.1.3",
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-      "license": "MIT",
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-        "tslint": "^6.1.3"
-      }
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package.json

@@ -1,11 +1,8 @@
 {
   "name": "@tsndr/cloudflare-worker-jwt",
-  "version": "1.1.3",
+  "version": "1.2.0",
   "description": "A lightweight JWT implementation with ZERO dependencies for Cloudflare Worker",
   "main": "index.js",
-  "scripts": {
-    "lint": "tslint index.js"
-  },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/tsndr/cloudflare-worker-jwt.git"
@@ -22,8 +19,5 @@
   "bugs": {
     "url": "https://github.com/tsndr/cloudflare-worker-jwt/issues"
   },
-  "homepage": "https://github.com/tsndr/cloudflare-worker-jwt#readme",
+  "homepage": "https://github.com/tsndr/cloudflare-worker-jwt#readme"
-  "devDependencies": {
-    "tslint": "^6.1.3"
-  }
 }

tslint.json

@@ -1,53 +0,0 @@
-{
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-        "binary-expression-operand-order": true,
-        "class-name": true,
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-        "increment-decrement": [true, "allow-post"],
-        "indent": [true, "spaces", 2],
-        "linebreak-style": [true, "LF"],
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-        "no-consecutive-blank-lines": [true, 2],
-        "no-duplicate-switch-case": true,
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-        "no-empty": true,
-        "no-eval": true,
-        "no-invalid-template-strings": true,
-        "no-invalid-this": true,
-        "no-irregular-whitespace": true,
-        "no-return-await": true,
-        "no-shadowed-variable": true,
-        "no-sparse-arrays": true,
-        "no-string-throw": true,
-        "no-tautology-expression": true,
-        "no-this-assignment": [true, {"allowed-names": ["^self$"], "allow-destructuring": true}],
-        "no-trailing-whitespace": [true, "ignore-comments", "ignore-jsdoc"],
-        "no-unnecessary-callback-wrapper": true,
-        "no-unnecessary-initializer": true,
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-        "no-var-keyword": true,
-        "object-literal-key-quotes": [true, "consistent-as-needed"],
-        "one-line": [true, "check-catch", "check-finally", "check-else", "check-open-brace", "check-whitespace"],
-        "one-variable-per-declaration": [true, "ignore-for-loop"],
-        "ordered-imports": true,
-        "prefer-conditional-expression": [true, "check-else-if"],
-        "prefer-const": true,
-        "prefer-object-spread": true,
-        "prefer-switch": [true, {"min-cases": 3}],
-        "prefer-template": [true, "allow-single-concat"],
-        "prefer-while": true,
-        "quotemark": [true, "single"],
-        "semicolon": [true, "never"],
-        "space-before-function-paren": [true, "never"],
-        "static-this": true,
-        "trailing-comma": [true, {"multiline": "never", "singleline": "never"}],
-        "triple-equals": true,
-        "unnecessary-constructor": [true, {"check-super-calls": true}],
-        "unnecessary-else": [true, {"allow-else-if": true}],
-        "use-isnan": true,
-        "whitespace": [true, "check-branch", "check-decl", "check-operator", "check-module", "check-separator", "check-rest-spread", "check-type", "check-typecast", "check-type-operator", "check-preblock", "check-postbrace"]
-    }
-}