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849天前/// <summary> |
/// 进行DES加密。 |
/// </summary> |
/// <param name="pToEncrypt">要加密的字符串。</param> |
/// <param name="sKey">密钥，且必须为8位。</param> |
/// <returns>以Base64格式返回的加密字符串。</returns> |
public string Encrypt(string pToEncrypt, string sKey) |
{ |
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider()) |
{ |
byte[] inputByteArray = Encoding.UTF8.GetBytes(pToEncrypt); |
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey); |
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey); |
System.IO.MemoryStream ms = new System.IO.MemoryStream(); |
using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write)) |
{ |
cs.Write(inputByteArray, 0, inputByteArray.Length); |
cs.FlushFinalBlock(); |
cs.Close(); |
} |
string str = Convert.ToBase64String(ms.ToArray()); |
ms.Close(); |
return str; |
} |
} |
|
|
// <summary> |
// 进行DES解密。 |
// </summary> |
// <param name="pToDecrypt">要解密的以Base64</param> |
// <param name="sKey">密钥，且必须为8位。</param> |
// <returns>已解密的字符串。</returns> |
public string Decrypt(string pToDecrypt, string sKey) |
{ |
byte[] inputByteArray = Convert.FromBase64String(pToDecrypt); |
using (DESCryptoServiceProvider des = new DESCryptoServiceProvider()) |
{ |
des.Key = ASCIIEncoding.ASCII.GetBytes(sKey); |
des.IV = ASCIIEncoding.ASCII.GetBytes(sKey); |
System.IO.MemoryStream ms = new System.IO.MemoryStream(); |
using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write)) |
{ |
cs.Write(inputByteArray, 0, inputByteArray.Length); |
cs.FlushFinalBlock(); |
cs.Close(); |
} |
string str = Encoding.UTF8.GetString(ms.ToArray()); |
ms.Close(); |
return str; |
} |
} |
