/// <summary>
/// 签名
/// </summary>
/// <param name="content">需要签名的内容</param>
/// <param name="privateKey">私钥</param>
/// <param name="inputCharset">编码格式</param>
/// <returns>返回签名字符串</returns>
public static string Sign(string content, string privateKey, string inputCharset)
{
Encoding code = Encoding.GetEncoding(inputCharset);
byte[] data = code.GetBytes(content);
RSACryptoServiceProvider rsa = RSAProviderFactory.DecodePemPrivateKey(privateKey);
SHA1 sh = new SHA1CryptoServiceProvider();
byte[] signData = rsa.SignData(data, sh);
return(Convert.ToBase64String(signData));
}
public static string Decrypt(byte[] data, string privateKey, string inputCharset)
{
string result = "";
RSACryptoServiceProvider rsa = RSAProviderFactory.DecodePemPrivateKey(privateKey);
SHA1 sh = new SHA1CryptoServiceProvider();
byte[] source = rsa.Decrypt(data, false);
Encoding code = Encoding.GetEncoding(inputCharset);
char[] asciiChars = new char[code.GetCharCount(source, 0, source.Length)];
code.GetChars(source, 0, source.Length, asciiChars, 0);
result = new string(asciiChars);
return(result);
}