C# 通用Windows平台(UWP)中的加密/解密存在数据错误(循环冗余校验)
我在我的通用Windows平台(UWP)应用程序中使用DES加密/解密算法。数据加密工作正常,但解密有错误: 这是我的密码:C# 通用Windows平台(UWP)中的加密/解密存在数据错误(循环冗余校验),c#,encryption,uwp,C#,Encryption,Uwp,我在我的通用Windows平台(UWP)应用程序中使用DES加密/解密算法。数据加密工作正常,但解密有错误: 这是我的密码: private static byte[] IV = { 12, 11, 12, 55, 0, 108, 121, 54 }; private static string stringKey = "SA/DF@#asx."; private static BinaryStringEncoding encoding; private static byte[] keyByt
private static byte[] IV = { 12, 11, 12, 55, 0, 108, 121, 54 };
private static string stringKey = "SA/DF@#asx.";
private static BinaryStringEncoding encoding;
private static byte[] keyByte;
private static SymmetricKeyAlgorithmProvider objAlg;
private static CryptographicKey Key;
加密:
public static string Encrypt(String strMsg)
{
IBuffer buffMsg = CryptographicBuffer.ConvertStringToBinary(strMsg,encoding);
IBuffer buffEncrypt = CryptographicEngine.Encrypt(Key, buffMsg, IV.AsBuffer());
return CryptographicBuffer.EncodeToBase64String(buffEncrypt);
}
解密:
public static string Decrypt(String strMsg)
{
var bb = CryptographicBuffer.ConvertStringToBinary(strMsg, encoding);
IBuffer buffEncrypt = CryptographicEngine.Decrypt(Key, bb, IV.AsBuffer());
return CryptographicBuffer.EncodeToBase64String(buffEncrypt);
}
而解密有以下错误:
Data error (cyclic redundancy check). (Exception from HRESULT: 0x80070017)
怎么了?只要看一下代码,似乎您已经将加密结果(通常是二进制blob转换为Base64字符串,这很好)。但是,当你解密时,你没有完全撤销Base64编码,而是将其视为一个二进制blob,难怪解码会失败。好的,我终于找到了我的答案:在定位解密步骤时出错了 正确的算法:
private static byte[] IV = { 12, 11, 12, 55, 0, 108, 121, 54 };
private static string stringKey = "SA/DF@#asx.";
private static BinaryStringEncoding encoding;
private static byte[] keyByte;
private static SymmetricKeyAlgorithmProvider objAlg;
private static CryptographicKey Key;
UWP中的DES加密:
public static string Encrypt(String strMsg)
{
IBuffer buffMsg = CryptographicBuffer.ConvertStringToBinary(strMsg,encoding);
IBuffer buffEncrypt = CryptographicEngine.Encrypt(Key, buffMsg, IV.AsBuffer());
return CryptographicBuffer.EncodeToBase64String(buffEncrypt);
}
以及解密步骤:
public static string Decrypt(String strMsg)
{
Byte[] bb = Convert.FromBase64String(strMsg);
IBuffer buffEncrypt = CryptographicEngine.Decrypt(Key, bb.AsBuffer(), IV.AsBuffer());
return CryptographicBuffer.ConvertBinaryToString(encoding, buffEncrypt);
}
什么是
IV
,编码是否与输入字符串匹配?