C# 如何使用私钥解密RSA_C#_Python_Encryption_Cryptography_Rsa

C# 如何使用私钥解密RSA

c# python encryption cryptography

C# 如何使用私钥解密RSA,c#,python,encryption,cryptography,rsa,C#,Python,Encryption,Cryptography,Rsa,我用python编写函数，按照RSA规则加密数据 def encrypt_RSA(public_key_loc, message): ''' param: public_key_loc Path to public key param: message String to be encrypted return base64 encoded encrypted string ''' from Crypto.PublicKey import RSA

我用python编写函数，按照RSA规则加密数据

def encrypt_RSA(public_key_loc, message):
    '''
    param: public_key_loc Path to public key
    param: message String to be encrypted
    return base64 encoded encrypted string
    '''
    from Crypto.PublicKey import RSA
    from Crypto.Cipher import PKCS1_OAEP
    key = open(public_key_loc, "r").read()
    rsakey = RSA.importKey(key)
    rsakey = PKCS1_OAEP.new(rsakey)
    encrypted = rsakey.encrypt(message)
    return encrypted.encode('base64')

我在python中有这样的解密方法

def decrypt_RSA(private_key_loc, package):
    '''
    param: public_key_loc Path to your private key
    param: package String to be decrypted
    return decrypted string
    '''
    from Crypto.PublicKey import RSA
    from Crypto.Cipher import PKCS1_OAEP
    from base64 import b64decode
    key = open(private_key_loc, "r").read()
    rsakey = RSA.importKey(key)
    rsakey = PKCS1_OAEP.new(rsakey)
    decrypted = rsakey.decrypt(b64decode(package))
    return decrypted

在C#中，我收到一个加密字符串并进行解码，但在导入私钥进行解密时遇到一些问题

public static string DecryptEncryptedData(string Base64EncryptedData, string PathToPrivateKeyFile)
        { 
            X509Certificate2 myCertificate; 

                myCertificate = new X509Certificate2(@"C:\Users\xxx\Documents\Visual Studio 2010\Projects\RSA\RSA\key.private"); 


            RSACryptoServiceProvider rsaObj; 
            if(myCertificate.HasPrivateKey) { 
                    rsaObj = (RSACryptoServiceProvider)myCertificate.PrivateKey; 
            } else 
                throw new CryptographicException("Private key not contained within certificate."); 

            if(rsaObj == null) 
                return String.Empty; 

            byte[] decryptedBytes; 
            try{ 
                decryptedBytes = rsaObj.Decrypt(Convert.FromBase64String(Base64EncryptedData), false); 
            } catch { 
                throw new CryptographicException("Unable to decrypt data."); 
            } 

            //    Check to make sure we decrpyted the string 
            if(decryptedBytes.Length == 0) 
                return String.Empty; 
            else 
                return System.Text.Encoding.UTF8.GetString(decryptedBytes); 
        }

但我在这一行有一个例外` myCertificate=new X509Certificate2（@“C:\Users\xxx\Documents\Visual Studio 2010\Projects\RSA\RSA\key.private”）

{“找不到请求的对象。\r\n”}

但是这个文件存在，这里是内容

其实我不知道怎么用C。

提前感谢

试试看，证书！=在python中，您使用的是OAEP，因此需要在.NET中将encrypt/decrypt的第二个参数设置为true。