如何实现CryptoSystem，PublicKey接口

Question

我必须提供一种编码，解码RSA公钥的方法，这种公钥不是由Certicom的API获得的，但是RIM有一个publicKeyEncoder类来抽象整个过程。

然而，它期望一个对象实现PublicKey接口，以及CryptoSystem接口 - 但我没有在任何地方找到任何示例。

任何人都知道要走哪条路？ CryptoSystem如何工作？

Answer 1

它的工作原理如下：

     *  cryptoSystem = new RSACryptoSystem(1024);
    byte[] expo = Base64InputStream.decode(exponent, 0, exponent.length());
    byte[] modul = Base64InputStream.decode(modulus, 0, modulus.length());


    byte[] pArr = Base64InputStream.decode(p, 0, p.length());
    byte[] qArr  = Base64InputStream.decode(q, 0, q.length());
    byte[] dpArr = Base64InputStream.decode(dp, 0, dp.length());
    byte[] dqArr = Base64InputStream.decode(dq, 0, dq.length());
    byte[] inverseQArr = Base64InputStream.decode(inverseQ, 0, inverseQ.length());
    byte[] dArr = Base64InputStream.decode(d, 0, d.length());


    // Public Key Setup
    RSAPublicKey publicKey = new RSAPublicKey( cryptoSystem, expo, modul);
    RSAEncryptorEngine eEngine = new RSAEncryptorEngine( publicKey );
    fEngine = new PKCS1FormatterEngine(eEngine);

    // Private Key Setup
    RSAPrivateKey privateKey = new RSAPrivateKey(cryptoSystem, expo, pArr, qArr, dpArr, dqArr, inverseQArr);
    dEngine = new RSADecryptorEngine(privateKey);
    ufEngine = new PKCS1UnformatterEngine(dEngine);