我使用RSA对我的数据进行加密和解密，它工作正常。现在主键和公钥是自动生成的，但是我想将String用作公钥和私钥。
我的代码：
public class EncryptHelper {
private KeyPairGenerator kpg;
private KeyPair kp;
private PublicKey publicKey;
private PrivateKey privateKey;
private byte [] encryptedBytes,decryptedBytes;
private Cipher cipher,cipher1;
private String encrypted,decrypted;
public String RSAEncrypt (final String plain) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException
{
kpg = KeyPairGenerator.getInstance("RSA");
kpg.initialize(1024);
kp = kpg.genKeyPair();
publicKey = kp.getPublic();
privateKey = kp.getPrivate();
cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
encryptedBytes = cipher.doFinal(plain.getBytes());
//encrypted = new String(encryptedBytes);
encrypted = bytesToString(encryptedBytes);
System.out.println("EEncrypted?????"+encrypted);
return encrypted;
}
public String RSADecrypt (final String result) throws NoSuchAlgorithmException, NoSuchPaddingException, InvalidKeyException, IllegalBlockSizeException, BadPaddingException
{
cipher1=Cipher.getInstance("RSA");
cipher1.init(Cipher.DECRYPT_MODE, privateKey);
decryptedBytes = cipher1.doFinal(stringToBytes(result));
decrypted = new String(decryptedBytes);
System.out.println("DDecrypted?????"+decrypted);
return decrypted;
}
private String bytesToString(byte[] b) {
byte[] b2 = new byte[b.length + 1];
b2[0] = 1;
System.arraycopy(b, 0, b2, 1, b.length);
return new BigInteger(b2).toString(36);
}
private byte[] stringToBytes(String s) {
byte[] b2 = new BigInteger(s, 36).toByteArray();
return Arrays.copyOfRange(b2, 1, b2.length);
}
}
我想知道如何在私钥和公钥中使用String。