Question

所以我被困在这一个星期。我想使用Java库执行非常基本的RSA加密。这是我的代码：

package com.company;
import java.util.Base64;
import java.security.*;
import java.security.spec.X509EncodedKeySpec;
import javax.crypto.Cipher;

public class Main
{
    public static void main(String[] args) throws Exception
    {
        System.out.println("Encryption process started...");
        //Next Line Explanation: "Bytes" is a class developed by me and for this case, its behaviour is verified.
        byte[] rawData = Bytes.fromHexString("ec5ac9830817ED48941A08F98100000004494C553B00000004539110730000003E0549828CCA27E966B301A48FECE2FCA5CF4D33F4A11EA877BA4AA573907330311C85DB234AA2640AFC4A76A735CF5B1F0FD68BD17FA181E1229AD867CC024D").toPbytes();
        System.out.println("Bytes to encrypt:");
        System.out.println(new Bytes(rawData).toString());
        final String RSA_PUBLIC_KEY = "-----BEGIN RSA PUBLIC KEY-----" +
                "MIIBCgKCAQEAwVACPi9w23mF3tBkdZz+zwrzKOaaQdr01vAbU4E1pvkfj4sqDsm6" +
                "lyDONS789sVoD/xCS9Y0hkkC3gtL1tSfTlgCMOOul9lcixlEKzwKENj1Yz/s7daS" +
                "an9tqw3bfUV/nqgbhGX81v/+7RFAEd+RwFnK7a+XYl9sluzHRyVVaTTveB2GazTw" +
                "Efzk2DWgkBluml8OREmvfraX3bkHZJTKX4EQSjBbbdJ2ZXIsRrYOXfaA+xayEGB+" +
                "8hdlLmAjbCVfaigxX0CDqWeR1yFL9kwd9P0NsZRPsmoqVwMbMu7mStFai6aIhc3n" +
                "Slv8kg9qv1m6XHVQY3PnEw+QQtqSIXklHwIDAQAB" +
                "-----END RSA PUBLIC KEY-----";
        byte[] rsaPublicKeyBytes = Base64.getDecoder().decode(RSA_PUBLIC_KEY);
        X509EncodedKeySpec x509EncodedKeySpec = new X509EncodedKeySpec(rsaPublicKeyBytes);
        PublicKey publicKey = KeyFactory.getInstance("RSA").generatePublic(x509EncodedKeySpec);
        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.ENCRYPT_MODE, publicKey);
        byte[] encryptedData = cipher.doFinal(rawData);
        System.out.println(new Bytes(encryptedData).toString());
    }
}

运行这个我得到：

Encryption process started...
Bytes to encrypt:


EC  5A  C9  83  08  17  ED  48  
94  1A  08  F9  81  00  00  00  
04  49  4C  55  3B  00  00  00  
04  53  91  10  73  00  00  00  
3E  05  49  82  8C  CA  27  E9  
66  B3  01  A4  8F  EC  E2  FC  
A5  CF  4D  33  F4  A1  1E  A8  
77  BA  4A  A5  73  90  73  30  
31  1C  85  DB  23  4A  A2  64  
0A  FC  4A  76  A7  35  CF  5B  
1F  0F  D6  8B  D1  7F  A1  81  
E1  22  9A  D8  67  CC  02  4D  

Exception in thread "main" java.lang.IllegalArgumentException: Illegal base64 character 2d
    at java.util.Base64$Decoder.decode0(Base64.java:714)
    at java.util.Base64$Decoder.decode(Base64.java:526)
    at java.util.Base64$Decoder.decode(Base64.java:549)

获得此异常后，我认为这可能是由标题中包含非法字符的密钥字符串引起的。所以我删除了标题：

        final String RSA_PUBLIC_KEY = "" +
            "MIIBCgKCAQEAwVACPi9w23mF3tBkdZz+zwrzKOaaQdr01vAbU4E1pvkfj4sqDsm6" +
            "lyDONS789sVoD/xCS9Y0hkkC3gtL1tSfTlgCMOOul9lcixlEKzwKENj1Yz/s7daS" +
            "an9tqw3bfUV/nqgbhGX81v/+7RFAEd+RwFnK7a+XYl9sluzHRyVVaTTveB2GazTw" +
            "Efzk2DWgkBluml8OREmvfraX3bkHZJTKX4EQSjBbbdJ2ZXIsRrYOXfaA+xayEGB+" +
            "8hdlLmAjbCVfaigxX0CDqWeR1yFL9kwd9P0NsZRPsmoqVwMbMu7mStFai6aIhc3n" +
            "Slv8kg9qv1m6XHVQY3PnEw+QQtqSIXklHwIDAQAB" +
            "";

尝试这个代码我得到：

Encryption process started...
Bytes to encrypt:


EC  5A  C9  83  08  17  ED  48  
94  1A  08  F9  81  00  00  00  
04  49  4C  55  3B  00  00  00  
04  53  91  10  73  00  00  00  
3E  05  49  82  8C  CA  27  E9  
66  B3  01  A4  8F  EC  E2  FC  
A5  CF  4D  33  F4  A1  1E  A8  
77  BA  4A  A5  73  90  73  30  
31  1C  85  DB  23  4A  A2  64  
0A  FC  4A  76  A7  35  CF  5B  
1F  0F  D6  8B  D1  7F  A1  81  
E1  22  9A  D8  67  CC  02  4D  

Exception in thread "main" java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException: algid parse error, not a sequence
    at sun.security.rsa.RSAKeyFactory.engineGeneratePublic(RSAKeyFactory.java:205)
    at java.security.KeyFactory.generatePublic(KeyFactory.java:334)
    at com.company.Main.main(Main.java:26)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:483)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: java.security.InvalidKeyException: IOException: algid parse error, not a sequence
    at sun.security.x509.X509Key.decode(X509Key.java:398)
    at sun.security.x509.X509Key.decode(X509Key.java:403)
    at sun.security.rsa.RSAPublicKeyImpl.<init>(RSAPublicKeyImpl.java:84)
    at sun.security.rsa.RSAKeyFactory.generatePublic(RSAKeyFactory.java:298)
    at sun.security.rsa.RSAKeyFactory.engineGeneratePublic(RSAKeyFactory.java:201)
    ... 7 more

我在网上搜索了很多，并尝试对代码进行了一些更改，但没有找到解决方法。所以我想我不得不问这个问题。

修改

此问题已标记为重复。但是我已经看过that thread，如果您注意到，我的代码与the second answer中提供的代码完全相同。

解析RSA公钥

0 个答案: