OAuth & SSH Keygen

keygen.js

@@ -0,0 +1,52 @@
+/* global encodePrivateKey, encodePublicKey */
+const extractable = true;
+
+function wrap(text, len) {
+  const length = len || 72;
+  let result = "";
+  for (let i = 0; i < text.length; i += length) {
+    result += text.slice(i, i + length);
+    result += "\n";
+  }
+  return result;
+}
+
+function rsaPrivateKey(key) {
+  return `-----BEGIN RSA PRIVATE KEY-----\n${key}-----END RSA PRIVATE KEY-----`;
+}
+
+function arrayBufferToBase64(buffer) {
+  let binary = "";
+  const bytes = new Uint8Array(buffer);
+  const len = bytes.byteLength;
+  for (let i = 0; i < len; i += 1) {
+    binary += String.fromCharCode(bytes[i]);
+  }
+  return window.btoa(binary);
+}
+
+function generateKeyPair(alg, size, name) {
+  return window.crypto.subtle
+    .generateKey(
+      {
+        name: "RSASSA-PKCS1-v1_5",
+        modulusLength: 2048, // can be 1024, 2048, or 4096
+        publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
+        hash: { name: "SHA-1" }, // can be "SHA-1", "SHA-256", "SHA-384", or "SHA-512"
+      },
+      extractable,
+      ["sign", "verify"]
+    )
+    .then(key => {
+      const privateKey = window.crypto.subtle
+        .exportKey("jwk", key.privateKey)
+        .then(encodePrivateKey)
+        .then(wrap)
+        .then(rsaPrivateKey);
+
+      const publicKey = window.crypto.subtle.exportKey("jwk", key.publicKey).then(jwk => encodePublicKey(jwk, name));
+      return Promise.all([privateKey, publicKey]);
+    });
+}
+
+// module.exports = { arrayBufferToBase64, generateKeyPair };