Sign packets

static/js/modules/crypto/main.js

@@ -1,4 +1,4 @@
 import { generate_keypair } from "./paillier.js";
-import { generate_rsa_keypair } from "./rsa.js";
+import { generate_rsa_keypair, RsaPubKey } from "./rsa.js";
 
-export { generate_keypair, generate_rsa_keypair };
+export { generate_keypair, generate_rsa_keypair, RsaPubKey };

static/js/modules/crypto/rsa.js

@@ -3,18 +3,29 @@ import { mod_exp, mod_inv } from "./math.js";
 
 let p, q, pubKey, privKey;
 
-class PubKey {
-    constructor(p, q) {
-        this.n = p * q;
-        this.e = 65537n;
+export class RsaPubKey {
+    constructor(n, e) {
+        this.n = n;
+        this.e = e;
     }
 
     encrypt(m) {
         return mod_exp(m, this.e, this.n);
     }
+
+    toJSON() {
+        return {
+            n: "0x" + this.n.toString(16),
+            e: "0x" + this.e.toString(16),
+        };
+    }
+
+    static fromJSON(data) {
+        return new RsaPubKey(BigInt(data.n), BigInt(data.e));
+    }
 }
 
-class PrivKey {
+class RsaPrivKey {
     constructor(p, q) {
         this.n = p * q;
         this.d = mod_inv(65537n, (q - 1n) * (p - 1n));
@@ -40,8 +51,8 @@ export function generate_rsa_keypair() {
         q = BigInt(window.sessionStorage.getItem("rsa_q"));
     }
 
-    pubKey = new PubKey(p, q);
-    privKey = new PrivKey(p, q);
+    pubKey = new RsaPubKey(p * q, 65537n);
+    privKey = new RsaPrivKey(p, q);
 
     return { pubKey, privKey };
 }