aes-rsa-hybrid-initializer.ts

import { CASRSAKeyPairResult } from "../../..";
import { RSAWrapper } from "../../asymmetric";
import { AESWrapper } from "../../symmetric";

export class AESRSAHybridInitializer {
    public aesType: number;
    public aesKey: Array<number>;
    public aesNonce: Array<number>;
    public rsaKeyPair: CASRSAKeyPairResult;

    /**
     * Constructs an initalizer to use with Hybrid Encryption wrapper. Generates your RSA key pair, AES nonce, and AES key based on the parameters passed in.
     * @param aesType 
     * @param rsaSize 
     */
    constructor(aesType: number, rsaSize: number) {
        if (aesType !== 128 && aesType !== 256) {
            throw new Error("Need an appropriate AES size to generate a hybrid initalizer");
        }
        this.aesType = aesType;
        let aesWrapper = new AESWrapper();
        this.aesKey = (aesType === 128) ? aesWrapper.aes128Key() : aesWrapper.aes256Key();
        this.aesNonce = aesWrapper.generateAESNonce();
        if (rsaSize !== 1028 && rsaSize !== 2048 && rsaSize !== 4096) {
            throw new Error("You must provide an appropriate RSA Key pair size to generate a hybrid initalizer");
        }
        this.rsaKeyPair = new RSAWrapper().generateKeys(rsaSize); 
    }
}