Bouncy Castle 加密和解密密码 - Org.BouncyCastle.Crypto.InvalidCipherTextException: \'block wrong\'答案

【问题标题】：Bouncy Castle Encrypt and Decrypt Password - Org.BouncyCastle.Crypto.InvalidCipherTextException: 'block incorrect'Bouncy Castle 加密和解密密码 - Org.BouncyCastle.Crypto.InvalidCipherTextException: \'block wrong\'
【发布时间】：2022-09-29 00:46:52
【问题描述】：

注意：这不适用于加密用户密码。使用哈希存储用户密码。您也可以像 salt bae 一样在这些密码上撒些盐。

我需要存储我的一个密码才能登录程序。我可以加密密码，但是当我解密时出现错误： Org.BouncyCastle.Crypto.InvalidCipherTextException：\'块不正确\'

我将使用不同的私钥，所以我不担心在这里发布这个。

节目类：

var input = \"TestPassword123!\";

Encryption EC = new Encryption();

var Key = \"-----BEGIN RSA PRIVATE KEY-----MIICXAIBAAKBgQCr874y+f3cYtz8hOuxamwHYUK7WS03c3t7LHMuCpmiR9wOz1FHEbBk6ZdvhY74I9sE+lIs0bUZVh08nKIS/txeECZ/d3WYDm8gW+mFjg0xD7LgQ9Prchsvrb2Q9c6FK5Us8i0iqOhDmrZdCYO+/zhyrYnP/Wy1EZTWPvMrI/GVWwIDAQABAoGBAJW5Sg8HIKYKq5NxhezY1rHiXYHWV4nmE0ogXTZk4nusiI+Ys5PncimcQFFKAUBNsEL4WB9QhplGI3UIihNyOZx68waSB6NiAi+tz8i7edTxDfwWkM271roOJxD3RzUJuQkyc57ZxrD61UyodRatmRoJkPhLBlEvIr9/dCwYBl0pAkEA5ucK8CFdxr4DWIAutZLeeeQx9oe1tCi/iUvEpSDOHKAvaELLBiD4bIInN4nx/Gj1gwHqICg8L/gs0x23cQWz3QJBAL6kYaRQFvCmVajTaTJ3ef3gYwynPsmfT5Urx0DWW5rXtbtZQ7vScDKRU4YbmBb3tD5eT/Fl/dIakPGv+hxllpcCQA3o5TPKDsgmMjVmo2m0y0o0gP4E9uE/gypWMiZwb3ox/CkfvPNFkTGYNZyW5sj52bBmsR/2zIlnPewJ4j8gxNECQDOT/8LX1E0Jg5VolUaNIpk4UzQCL6+XBY4DSSZWmHQdNlLYxMWVGrvjq6hV4OEd5UsWcySJhpGIlHx/Mvjp10MCQAon0SLhRI8QNrWfp/dLuFdqTy4b4y64j3HvooOu6GDZwCLwjqvwML3rimxUi52EQspssIOlLjpQjvIJvYBKBys=-----END RSA PRIVATE KEY-----\";

var encrypted = EC.RsaEncrypt(input, Key);

string password = EC.RsaDecrypt(encrypted, Key);

加密类

using System;
using System.IO;
using System.Text;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Encodings;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.OpenSsl;

namespace TemarkNamespace
{
    internal class Encryption
    {
        public string RsaEncrypt(string clearText, string Key)
        {
            var bytesToEncrypt = Encoding.UTF8.GetBytes(clearText);

            var encryptEngine = new Pkcs1Encoding(new RsaEngine());

            using (var txtreader = new StringReader(Key))
            {
                var keyPair = (AsymmetricCipherKeyPair)new PemReader(txtreader).ReadObject();

                encryptEngine.Init(true, keyPair.Private);
            }

            var encrypted = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
            return encrypted;
        }

        // Decryption:
        public string RsaDecrypt(string pass, string Key)
        {
            var bytesToDecrypt = Convert.FromBase64String(pass);

            AsymmetricCipherKeyPair keyPair;
            var decryptEngine = new Pkcs1Encoding(new RsaEngine());

            using (var txtreader = new StringReader(Key))
            {
                keyPair = (AsymmetricCipherKeyPair)new PemReader(txtreader).ReadObject();

                decryptEngine.Init(false, keyPair.Private);
            }

            var decrypted = Encoding.UTF8.GetString(decryptEngine.ProcessBlock(bytesToDecrypt, 0, bytesToDecrypt.Length));
            return decrypted;
        }
    }
}

标签： c# bouncycastle

【解决方案1】：

我找到了这段代码，它似乎工作正常使用 System.Security.Cryptography；

public string Encrypt(string s)
{
    if (String.IsNullOrEmpty(s))
    {
        return s;
    }
    else
    {
        var encoding = new UTF8Encoding();
        byte[] plain = encoding.GetBytes(s);
        byte[] secret = ProtectedData.Protect(plain, null, DataProtectionScope.CurrentUser);
        return Convert.ToBase64String(secret);
    }
}

public string Decrypt(string s)
{
    if (String.IsNullOrEmpty(s))
    {
        return s;
    }
    else
    {
        byte[] secret = Convert.FromBase64String(s);
        byte[] plain = ProtectedData.Unprotect(secret, null, DataProtectionScope.CurrentUser);
        var encoding = new UTF8Encoding();
        return encoding.GetString(plain);
    }
}

【讨论】：