com.bugvm.conscrypt.OpenSSLRSAKeyPairGenerator Maven / Gradle / Ivy
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.bugvm.conscrypt;
import java.math.BigInteger;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyPair;
import java.security.KeyPairGeneratorSpi;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.RSAKeyGenParameterSpec;
public class OpenSSLRSAKeyPairGenerator extends KeyPairGeneratorSpi {
/**
* Default modulus size is 0x10001 (65537)
*/
private byte[] publicExponent = new byte[] {
0x01, 0x00, 0x01
};
/**
* Default RSA key size 2048 bits.
*/
private int modulusBits = 2048;
@Override
public KeyPair generateKeyPair() {
final OpenSSLKey key = new OpenSSLKey(NativeCrypto.RSA_generate_key_ex(modulusBits,
publicExponent));
PrivateKey privKey = OpenSSLRSAPrivateKey.getInstance(key);
PublicKey pubKey = new OpenSSLRSAPublicKey(key);
return new KeyPair(pubKey, privKey);
}
@Override
public void initialize(int keysize, SecureRandom random) {
this.modulusBits = keysize;
}
@Override
public void initialize(AlgorithmParameterSpec params, SecureRandom random)
throws InvalidAlgorithmParameterException {
if (!(params instanceof RSAKeyGenParameterSpec)) {
throw new InvalidAlgorithmParameterException("Only RSAKeyGenParameterSpec supported");
}
RSAKeyGenParameterSpec spec = (RSAKeyGenParameterSpec) params;
final BigInteger publicExponent = spec.getPublicExponent();
if (publicExponent != null) {
this.publicExponent = publicExponent.toByteArray();
}
this.modulusBits = spec.getKeysize();
}
}