Initial commit: Developer Tools MVP with visual editor

- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality

node_modules/node-forge/lib/asn1-validator.js

@@ -0,0 +1,91 @@
+/**
+ * Copyright (c) 2019 Digital Bazaar, Inc.
+ */
+
+var forge = require('./forge');
+require('./asn1');
+var asn1 = forge.asn1;
+
+exports.privateKeyValidator = {
+  // PrivateKeyInfo
+  name: 'PrivateKeyInfo',
+  tagClass: asn1.Class.UNIVERSAL,
+  type: asn1.Type.SEQUENCE,
+  constructed: true,
+  value: [{
+    // Version (INTEGER)
+    name: 'PrivateKeyInfo.version',
+    tagClass: asn1.Class.UNIVERSAL,
+    type: asn1.Type.INTEGER,
+    constructed: false,
+    capture: 'privateKeyVersion'
+  }, {
+    // privateKeyAlgorithm
+    name: 'PrivateKeyInfo.privateKeyAlgorithm',
+    tagClass: asn1.Class.UNIVERSAL,
+    type: asn1.Type.SEQUENCE,
+    constructed: true,
+    value: [{
+      name: 'AlgorithmIdentifier.algorithm',
+      tagClass: asn1.Class.UNIVERSAL,
+      type: asn1.Type.OID,
+      constructed: false,
+      capture: 'privateKeyOid'
+    }]
+  }, {
+    // PrivateKey
+    name: 'PrivateKeyInfo',
+    tagClass: asn1.Class.UNIVERSAL,
+    type: asn1.Type.OCTETSTRING,
+    constructed: false,
+    capture: 'privateKey'
+  }]
+};
+
+exports.publicKeyValidator = {
+  name: 'SubjectPublicKeyInfo',
+  tagClass: asn1.Class.UNIVERSAL,
+  type: asn1.Type.SEQUENCE,
+  constructed: true,
+  captureAsn1: 'subjectPublicKeyInfo',
+  value: [{
+    name: 'SubjectPublicKeyInfo.AlgorithmIdentifier',
+    tagClass: asn1.Class.UNIVERSAL,
+    type: asn1.Type.SEQUENCE,
+    constructed: true,
+    value: [{
+      name: 'AlgorithmIdentifier.algorithm',
+      tagClass: asn1.Class.UNIVERSAL,
+      type: asn1.Type.OID,
+      constructed: false,
+      capture: 'publicKeyOid'
+    }]
+  },
+  // capture group for ed25519PublicKey
+  {
+    tagClass: asn1.Class.UNIVERSAL,
+    type: asn1.Type.BITSTRING,
+    constructed: false,
+    composed: true,
+    captureBitStringValue: 'ed25519PublicKey'
+  }
+  // FIXME: this is capture group for rsaPublicKey, use it in this API or
+  // discard?
+  /* {
+    // subjectPublicKey
+    name: 'SubjectPublicKeyInfo.subjectPublicKey',
+    tagClass: asn1.Class.UNIVERSAL,
+    type: asn1.Type.BITSTRING,
+    constructed: false,
+    value: [{
+      // RSAPublicKey
+      name: 'SubjectPublicKeyInfo.subjectPublicKey.RSAPublicKey',
+      tagClass: asn1.Class.UNIVERSAL,
+      type: asn1.Type.SEQUENCE,
+      constructed: true,
+      optional: true,
+      captureAsn1: 'rsaPublicKey'
+    }]
+  } */
+  ]
+};