TSM.ID
67 lines
1.6 KiB
TypeScript
67 lines
1.6 KiB
TypeScript
export class XCUQuantumCipher {
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private key: CryptoKey | null = null;
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private roomSecret: string;
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constructor(roomSecret: string) {
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this.roomSecret = roomSecret;
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}
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public async initialize() {
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const enc = new TextEncoder();
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const keyMaterial = await crypto.subtle.importKey(
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"raw",
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enc.encode(this.roomSecret.padEnd(32, "0").slice(0, 32)), // 256-bit derivation
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{ name: "PBKDF2" },
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false,
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["deriveBits", "deriveKey"]
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);
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this.key = await crypto.subtle.deriveKey(
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{
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name: "PBKDF2",
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salt: enc.encode("xcom_ultra_salt_v1"),
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iterations: 100000,
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hash: "SHA-256",
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},
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keyMaterial,
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{ name: "AES-GCM", length: 256 },
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false,
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["encrypt", "decrypt"]
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);
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}
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public async encrypt(plaintext: string): Promise<Uint8Array> {
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if (!this.key) throw new Error("Cipher not initialized");
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const iv = crypto.getRandomValues(new Uint8Array(12));
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const enc = new TextEncoder();
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const ciphertext = await crypto.subtle.encrypt(
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{
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name: "AES-GCM",
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iv: iv,
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},
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this.key,
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enc.encode(plaintext)
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);
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const result = new Uint8Array(iv.length + ciphertext.byteLength);
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result.set(iv, 0);
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result.set(new Uint8Array(ciphertext), iv.length);
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return result;
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}
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public async decrypt(data: Uint8Array): Promise<string> {
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if (!this.key) throw new Error("Cipher not initialized");
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const iv = data.slice(0, 12);
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const ciphertext = data.slice(12);
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const plaintext = await crypto.subtle.decrypt(
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{
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name: "AES-GCM",
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iv: iv,
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},
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this.key,
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ciphertext
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);
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const dec = new TextDecoder();
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return dec.decode(plaintext);
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}
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}
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