如何将 String 转换为 PublicKey?
How to convert from String to PublicKey?
我使用以下代码将 public 和私钥转换为字符串
KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA");
keyPairGen.initialize(2048);
KeyPair keyPair = keyPairGen.genKeyPair();
PublicKey publicKey = keyPair.getPublic();
PrivateKey privateKey = keyPair.getPrivate();
String publicK = Base64.encodeBase64String(publicKey.getEncoded());
String privateK = Base64.encodeBase64String(privateKey.getEncoded());
现在我正在尝试将其转换回 public 广告私钥
PublicKey publicDecoded = Base64.decodeBase64(publicK);
我收到无法从 byte[] 转换为 public 键的错误。所以我这样尝试
PublicKey publicDecoded = new SecretKeySpec(Base64.decodeBase64(publicK),"RSA");
这会导致如下错误
java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: Neither a public nor a private key
看来我在此处进行了错误的密钥转换。任何帮助将不胜感激。
我认为您不能将 SecretKeySpec
与 RSA 一起使用。
应该这样做:
byte[] publicBytes = Base64.decodeBase64(publicK);
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(publicBytes);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
PublicKey pubKey = keyFactory.generatePublic(keySpec);
并解码私用PKCS8EncodedKeySpec
我使用以下代码将 public 和私钥转换为字符串
KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance("RSA");
keyPairGen.initialize(2048);
KeyPair keyPair = keyPairGen.genKeyPair();
PublicKey publicKey = keyPair.getPublic();
PrivateKey privateKey = keyPair.getPrivate();
String publicK = Base64.encodeBase64String(publicKey.getEncoded());
String privateK = Base64.encodeBase64String(privateKey.getEncoded());
现在我正在尝试将其转换回 public 广告私钥
PublicKey publicDecoded = Base64.decodeBase64(publicK);
我收到无法从 byte[] 转换为 public 键的错误。所以我这样尝试
PublicKey publicDecoded = new SecretKeySpec(Base64.decodeBase64(publicK),"RSA");
这会导致如下错误
java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: Neither a public nor a private key
看来我在此处进行了错误的密钥转换。任何帮助将不胜感激。
我认为您不能将 SecretKeySpec
与 RSA 一起使用。
应该这样做:
byte[] publicBytes = Base64.decodeBase64(publicK);
X509EncodedKeySpec keySpec = new X509EncodedKeySpec(publicBytes);
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
PublicKey pubKey = keyFactory.generatePublic(keySpec);
并解码私用PKCS8EncodedKeySpec