我知道关于这个话题还有其他一些问题,但没有一个问题能帮到我。我也尝试了BouncyCastle
lib。有人可以帮我吗?
PEM文件如下所示:
-----BEGIN RSA PRIVATE KEY-----
MIIEpAIBAAKCAQEAq2eYtnTsEc/qyqS ...
... zY3WG++SA+amcXiO721hJWNC+uTbZ1bzQ==
-----END RSA PRIVATE KEY-----
我正在使用这种方法
public static PrivateKey getPemPrivateKey(String filename) throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
File f = new File(PEMFILES_FOLDER+filename);
FileInputStream fis = new FileInputStream(f);
DataInputStream dis = new DataInputStream(fis);
byte[] keyBytes = new byte[(int) f.length()];
dis.readFully(keyBytes);
dis.close();
String temp = new String(keyBytes);
//TODO care about the linefeeds
String privKeyPEM = temp.replace("-----BEGIN RSA PRIVATE KEY-----\n", "");
privKeyPEM = privKeyPEM.replace("-----END RSA PRIVATE KEY-----", "");
System.out.println("Private key: \n"+privKeyPEM);
Base64 b64 = new Base64();
byte [] decoded = b64.decode(privKeyPEM);
PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(decoded);
KeyFactory kf = KeyFactory.getInstance(RSA);
return kf.generatePrivate(spec);
}
我收到此错误:
java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException : algid parse error, not a sequence
答案 0 :(得分:1)
我希望这可以帮到你。我复制了getPemPrivatekey的工作副本以及我在main函数中调用它的方式:
public PrivateKey getPemPrivateKey(String filename, String algorithm) throws Exception {
File f = new File(filename);
FileInputStream fis = new FileInputStream(f);
DataInputStream dis = new DataInputStream(fis);
byte[] keyBytes = new byte[(int) f.length()];
dis.readFully(keyBytes);
dis.close();
String temp = new String(keyBytes);
String privKeyPEM = temp.replace("-----BEGIN PRIVATE KEY-----", "");
privKeyPEM = privKeyPEM.replace("-----END PRIVATE KEY-----", "");
//System.out.println("Private key\n"+privKeyPEM);
BASE64Decoder b64=new BASE64Decoder();
byte[] decoded = b64.decodeBuffer(privKeyPEM);
PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(decoded);
KeyFactory kf = KeyFactory.getInstance(algorithm);
return kf.generatePrivate(spec);
}
主程序如下所示: ....
gcsr = new ...... //在这里实例化课程
privateKey= gcsr.getPemPrivateKey("c:\\testdir\\java_private.pem", "RSA");
BASE64Encoder encoder1= new BASE64Encoder();
String s1=encoder1.encodeBuffer(gcsr.getPrivateKey().getEncoded());
System.out.println("Private Key in Base64:"+s1+"\n");
目前正在使用(我的计算机上的Java 8!)。 “gcsr”是我从包含该函数的类中实例化的对象的名称。 问候。