//获取公钥
internal string GetPublicKey()
{
string publicKey = RSACSP.ToXmlString(false);
string encryptedPK = DESManager.DesEncrypt(publicKey);
return(encryptedPK);
}
/// <summary>
/// 根据私钥解密
/// </summary>
/// <param name="encriptedString">要解密的字符串</param>
/// <param name="privateKey">私钥</param>
/// <returns></returns>
public string DecryptFromBase64String(string Source, string PrivateKey)
{
byte[] tempByte = System.Convert.FromBase64String(Source);
RSACSP.FromXmlString(DESManager.DesDecrypt(PrivateKey));
string result = Encoding.UTF8.GetString(RSACSP.Decrypt(tempByte, false));
return(result);
}
/// <summary>
/// 根据公钥加密字符串
/// </summary>
/// <param name="originalString">要加密的字符串</param>
/// <param name="publicKey">公钥</param>
/// <returns></returns>
public string EncryptToBase64String(string Source, string PublicKey)
{
RSACSP.FromXmlString(DESManager.DesDecrypt(PublicKey));
byte[] tempByte = EncryptToByte(Source, PublicKey);
string result = Convert.ToBase64String(tempByte);
return(result);
}
public string Encrypt(string Source, string PublicKey)
{
RSACSP.FromXmlString(DESManager.DesDecrypt(PublicKey));
byte[] tempByte = EncryptToByte(Source, PublicKey);
StringBuilder sb = new StringBuilder();
foreach (byte b in tempByte)
{
sb.Append(b.ToString().PadLeft(3, '0'));
}
return(sb.ToString());
}
public string Decrypt(string Source, string PrivateKey)
{
int ByteNum = Source.Length / 3;
byte[] tempByte = new byte[ByteNum];
StringBuilder sb = new StringBuilder();
try
{
for (int i = 0; i < ByteNum; i++)
{
tempByte[i] = Convert.ToByte(Source.Substring(i * 3, 3), 10);
}
}
catch
{
throw new Exception("密文内容有误");
}
RSACSP.FromXmlString(DESManager.DesDecrypt(PrivateKey));
string result = Encoding.UTF8.GetString(RSACSP.Decrypt(tempByte, false));
return(result);
}
public byte[] EncryptToByte(string Source, string PublicKey)
{
RSACSP.FromXmlString(DESManager.DesDecrypt(PublicKey));
return(RSACSP.Encrypt(Encoding.UTF8.GetBytes(Source), false));
}
//获取私钥
internal string GetPrivateKey()
{
string privateKey = RSACSP.ToXmlString(true);
return(DESManager.DesEncrypt(privateKey));
}