密钥生成方法
public static String generateKeys(String keyAlgorithm, int numBits) {
try {
// Get the public/private key pair
KeyPairGenerator keyGen = KeyPairGenerator.getInstance(keyAlgorithm);
keyGen.initialize(numBits);
KeyPair keyPair = keyGen.genKeyPair();
PrivateKey privateKey = keyPair.getPrivate();
PublicKey publicKey = keyPair.getPublic();
System.out.println("n" + "Generating key/value pair using " + privateKey.getAlgorithm() + " algorithm");
// Get the bytes of the public and private keys
byte[] privateKeyBytes = privateKey.getEncoded();
byte[] publicKeyBytes = publicKey.getEncoded();
// Get the formats of the encoded bytes
String formatPrivate = privateKey.getFormat(); // PKCS#8
String formatPublic = publicKey.getFormat(); // X.509
String pv=String.valueOf(privateKeyBytes);
System.out.println("Private Key : " + Base64.encode(pv));
String pb=String.valueOf(publicKeyBytes);
System.out.println("Public Key : " + Base64.encode(pb));
// return pb;
// System.out.println("Private Key : " + Base64.encode(String.valueOf(privateKeyBytes)));
// System.out.println("Public Key : " + Base64.encode(String.valueOf(publicKeyBytes)));
// The bytes can be converted back to public and private key objects
KeyFactory keyFactory = KeyFactory.getInstance(keyAlgorithm);
EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(privateKeyBytes);
PrivateKey privateKey2 = keyFactory.generatePrivate(privateKeySpec);
EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(publicKeyBytes);
PublicKey publicKey2 = keyFactory.generatePublic(publicKeySpec);
// The original and new keys are the same
// System.out.println(" Are both private keys equal? " + privateKey.equals(privateKey2));
// System.out.println(" Are both public keys equal? " + publicKey.equals(publicKey2));
} catch (InvalidKeySpecException specException) {
System.out.println("Exception");
System.out.println("Invalid Key Spec Exception");
} catch (NoSuchAlgorithmException e) {
System.out.println("Exception");
System.out.println("No such algorithm: " + keyAlgorithm);
}
return null;
}
}
这是我的密钥生成代码我只想从上述方法中获取Public Key的值,并使用序列化将其发送到服务器。
String pb=String.valueOf(publicKeyBytes);
System.out.println("Public Key : " + Base64.encode(pb));
但是我的方法显示null如何通过密钥存储库或任何其他方法将公钥/私钥存储在文件中
您应该能够通过运行以下命令获得公钥字符串:
system . out。println(新字符串(java.util.Base64.getEncoder () .encode (publicKeyBytes))),