update secp256k1 library, add nip04.js

.eslintrc.json

@@ -0,0 +1,142 @@
+{
+  "parserOptions": {
+    "ecmaVersion": 9,
+    "ecmaFeatures": {
+      "jsx": true
+    },
+    "sourceType": "module",
+    "allowImportExportEverywhere": false
+  },
+
+  "env": {
+    "es6": true,
+    "node": true
+  },
+
+  "plugins": [
+    "babel"
+  ],
+
+  "globals": {
+    "document": false,
+    "navigator": false,
+    "window": false,
+    "location": false,
+    "URL": false,
+    "URLSearchParams": false,
+    "fetch": false,
+    "EventSource": false,
+    "localStorage": false,
+    "sessionStorage": false
+  },
+
+  "rules": {
+    "accessor-pairs": 2,
+    "arrow-spacing": [2, { "before": true, "after": true }],
+    "block-spacing": [2, "always"],
+    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
+    "comma-dangle": 0,
+    "comma-spacing": [2, { "before": false, "after": true }],
+    "comma-style": [2, "last"],
+    "constructor-super": 2,
+    "curly": [0, "multi-line"],
+    "dot-location": [2, "property"],
+    "eol-last": 2,
+    "eqeqeq": [2, "allow-null"],
+    "generator-star-spacing": [2, { "before": true, "after": true }],
+    "handle-callback-err": [2, "^(err|error)$" ],
+    "indent": 0,
+    "jsx-quotes": [2, "prefer-double"],
+    "key-spacing": [2, { "beforeColon": false, "afterColon": true }],
+    "keyword-spacing": [2, { "before": true, "after": true }],
+    "new-cap": 0,
+    "new-parens": 0,
+    "no-array-constructor": 2,
+    "no-caller": 2,
+    "no-class-assign": 2,
+    "no-cond-assign": 2,
+    "no-const-assign": 2,
+    "no-control-regex": 0,
+    "no-debugger": 0,
+    "no-delete-var": 2,
+    "no-dupe-args": 2,
+    "no-dupe-class-members": 2,
+    "no-dupe-keys": 2,
+    "no-duplicate-case": 2,
+    "no-empty-character-class": 2,
+    "no-empty-pattern": 2,
+    "no-eval": 0,
+    "no-ex-assign": 2,
+    "no-extend-native": 2,
+    "no-extra-bind": 2,
+    "no-extra-boolean-cast": 2,
+    "no-extra-parens": [2, "functions"],
+    "no-fallthrough": 2,
+    "no-floating-decimal": 2,
+    "no-func-assign": 2,
+    "no-implied-eval": 2,
+    "no-inner-declarations": [0, "functions"],
+    "no-invalid-regexp": 2,
+    "no-irregular-whitespace": 2,
+    "no-iterator": 2,
+    "no-label-var": 2,
+    "no-labels": [2, { "allowLoop": false, "allowSwitch": false }],
+    "no-lone-blocks": 2,
+    "no-mixed-spaces-and-tabs": 2,
+    "no-multi-spaces": 2,
+    "no-multi-str": 2,
+    "no-multiple-empty-lines": [2, { "max": 2 }],
+    "no-native-reassign": 2,
+    "no-negated-in-lhs": 2,
+    "no-new": 0,
+    "no-new-func": 2,
+    "no-new-object": 2,
+    "no-new-require": 2,
+    "no-new-symbol": 2,
+    "no-new-wrappers": 2,
+    "no-obj-calls": 2,
+    "no-octal": 2,
+    "no-octal-escape": 2,
+    "no-path-concat": 0,
+    "no-proto": 2,
+    "no-redeclare": 2,
+    "no-regex-spaces": 2,
+    "no-return-assign": 0,
+    "no-self-assign": 2,
+    "no-self-compare": 2,
+    "no-sequences": 2,
+    "no-shadow-restricted-names": 2,
+    "no-spaced-func": 2,
+    "no-sparse-arrays": 2,
+    "no-this-before-super": 2,
+    "no-throw-literal": 2,
+    "no-trailing-spaces": 2,
+    "no-undef": 2,
+    "no-undef-init": 2,
+    "no-unexpected-multiline": 2,
+    "no-unneeded-ternary": [2, { "defaultAssignment": false }],
+    "no-unreachable": 2,
+    "no-unused-vars": [2, { "vars": "local", "args": "none", "varsIgnorePattern": "^_"}],
+    "no-useless-call": 2,
+    "no-useless-constructor": 2,
+    "no-with": 2,
+    "one-var": [0, { "initialized": "never" }],
+    "operator-linebreak": [2, "after", { "overrides": { "?": "before", ":": "before" } }],
+    "padded-blocks": [2, "never"],
+    "quotes": [2, "single", { "avoidEscape": true, "allowTemplateLiterals": true }],
+    "semi": [2, "never"],
+    "semi-spacing": [2, { "before": false, "after": true }],
+    "space-before-blocks": [2, "always"],
+    "space-before-function-paren": 0,
+    "space-in-parens": [2, "never"],
+    "space-infix-ops": 2,
+    "space-unary-ops": [2, { "words": true, "nonwords": false }],
+    "spaced-comment": 0,
+    "template-curly-spacing": [2, "never"],
+    "use-isnan": 2,
+    "valid-typeof": 2,
+    "wrap-iife": [2, "any"],
+    "yield-star-spacing": [2, "both"],
+    "yoda": [0]
+  }
+}

.prettierrc.yaml

@@ -1,9 +1,10 @@
+semi: false
 arrowParens: avoid
-bracketSpacing: false
-jsxBracketSameLine: false
+insertPragma: false
 printWidth: 80
 proseWrap: preserve
-semi: false
 singleQuote: true
 trailingComma: none
 useTabs: false
+jsxBracketSameLine: false
+bracketSpacing: false

event.js

@@ -1,4 +1,4 @@
-import * as secp256k1 from 'noble-secp256k1'
+import * as secp256k1 from '@noble/secp256k1'
 
 import {sha256} from './utils'
 

nip04.js

@@ -0,0 +1,36 @@
+import * as secp256k1 from '@noble/secp256k1'
+
+export function encrypt(privkey, pubkey, text) {
+  const key = secp256k1.getSharedSecret(privkey, '02' + pubkey)
+  const normalizedKey = getOnlyXFromFullSharedSecret(key)
+
+  let iv = crypto.randomFillSync(new Uint8Array(16))
+  var cipher = crypto.createCipheriv(
+    'aes-256-cbc',
+    Buffer.from(normalizedKey, 'hex'),
+    iv
+  )
+  let encryptedMessage = cipher.update(text, 'utf8', 'base64')
+  encryptedMessage += cipher.final('base64')
+
+  return [encryptedMessage, Buffer.from(iv.buffer).toString('base64')]
+}
+
+export function decrypt(privkey, pubkey, ciphertext, iv) {
+  const key = secp256k1.getSharedSecret(privkey, '02' + pubkey)
+  const normalizedKey = getOnlyXFromFullSharedSecret(key)
+
+  var decipher = crypto.createDecipheriv(
+    'aes-256-cbc',
+    Buffer.from(normalizedKey, 'hex'),
+    Buffer.from(iv, 'base64')
+  )
+  let decryptedMessage = decipher.update(ciphertext, 'base64')
+  decryptedMessage += decipher.final('utf8')
+
+  return decryptedMessage
+}
+
+function getOnlyXFromFullSharedSecret(fullSharedSecretCoordinates) {
+  return fullSharedSecretCoordinates.substr(2, 64)
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nostr-tools",
-  "version": "0.5.0",
+  "version": "0.6.0",
   "description": "Tools for making a Nostr client.",
   "main": "index.js",
   "repository": {
@@ -8,9 +8,9 @@
     "url": "https://github.com/fiatjaf/nostr-tools.git"
   },
   "dependencies": {
+    "@noble/secp256k1": "^1.3.0",
     "buffer": "^6.0.3",
     "dns-packet": "^5.2.4",
-    "noble-secp256k1": "^1.1.1",
     "websocket-polyfill": "^0.0.3"
   },
   "keywords": [

utils.js

@@ -1,4 +1,4 @@
-import * as secp256k1 from 'noble-secp256k1'
+import * as secp256k1 from '@noble/secp256k1'
 
 export const makeRandom32 = () => secp256k1.utils.randomPrivateKey()
 export const sha256 = m => secp256k1.utils.sha256(Uint8Array.from(m))