priv and pub key generation

1 files changed, 116 insertions, 0 deletions

diff --git a/packages/exchange-backoffice-ui/src/pages/Officer.tsx b/packages/exchange-backoffice-ui/src/pages/Officer.tsx
new file mode 100644
index 000000000..c72ca0720
--- /dev/null
+++ b/packages/exchange-backoffice-ui/src/pages/Officer.tsx
@@ -0,0 +1,116 @@
+import { useLocalStorage } from "@gnu-taler/web-util/browser";
+import { h } from "preact";
+import { useEffect, useState } from "preact/hooks";
+
+const oldKey =
+  "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";
+export function Officer() {
+  const storage = useLocalStorage("officer");
+  const [keys, setKeys] = useState({ priv: "", pub: "" });
+  useEffect(() => {
+    loadPreviousSession(oldKey).then((keys) =>
+      setKeys(keys ?? { priv: "", pub: "" }),
+    );
+    // generateNewId().then((keys) => setKeys(keys));
+  }, []);
+
+  console.log(keys.pub);
+  console.log(keys.priv);
+  return (
+    <div>
+      <div>Officer</div>
+      <h1 class="my-2 text-3xl font-bold tracking-tight text-gray-900 ">
+        Public key
+      </h1>
+      <div>
+        -----BEGIN PUBLIC KEY-----
+        <p class="mt-6 leading-8 text-gray-700 break-all">{keys.pub}</p>
+        -----END PUBLIC KEY-----
+      </div>
+      <h1 class="my-2 text-3xl font-bold tracking-tight text-gray-900 ">
+        Private key
+      </h1>
+      <div>
+        -----BEGIN PRIVATE KEY-----
+        <p class="mt-6 leading-8 text-gray-700 break-all">{keys.priv}</p>
+        -----END PRIVATE KEY-----
+      </div>
+    </div>
+  );
+}
+
+const rsaAlgorithm: RsaHashedKeyGenParams = {
+  name: "RSA-OAEP",
+  modulusLength: 2048,
+  publicExponent: new Uint8Array([0x01, 0x00, 0x01]),
+  hash: "SHA-256",
+};
+
+async function generateNewId() {
+  const key = await crypto.subtle.generateKey(rsaAlgorithm, true, [
+    "encrypt",
+    "decrypt",
+  ]);
+
+  if (key instanceof CryptoKey) {
+    throw Error("unexpected key without pair");
+  }
+  const { privateKey, publicKey } = key;
+  const privRaw = await crypto.subtle.exportKey("pkcs8", privateKey);
+
+  const pubRaw = await crypto.subtle.exportKey("spki", publicKey);
+
+  const priv = btoa(ab2str(privRaw));
+
+  const pub = btoa(ab2str(pubRaw));
+  return { priv, pub };
+}
+
+async function loadPreviousSession(priv: string) {
+  const key = str2ab(window.atob(priv));
+  const privateKey = await window.crypto.subtle
+    .importKey("pkcs8", key, rsaAlgorithm, true, ["decrypt"])
+    .catch(throwErrorWithStack);
+
+  if (!privateKey) return undefined;
+
+  // export private key to JWK
+  const jwk = await crypto.subtle
+    .exportKey("jwk", privateKey)
+    .catch(throwErrorWithStack);
+
+  // remove private data from JWK
+  delete jwk.d;
+  delete jwk.dp;
+  delete jwk.dq;
+  delete jwk.q;
+  delete jwk.qi;
+  jwk.key_ops = ["encrypt"];
+
+  const publicKey = await crypto.subtle
+    .importKey("jwk", jwk, rsaAlgorithm, true, ["encrypt"])
+    .catch(throwErrorWithStack);
+
+  const pubRaw = await crypto.subtle
+    .exportKey("spki", publicKey)
+    .catch(throwErrorWithStack);
+
+  const pub = btoa(ab2str(pubRaw));
+
+  return { priv, pub };
+}
+
+function ab2str(buf: ArrayBuffer) {
+  return String.fromCharCode.apply(null, Array.from(new Uint8Array(buf)));
+}
+function str2ab(str: string) {
+  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;
+}
+function throwErrorWithStack(e: Error): never {
+  throw new Error(e.message);
+}