/// <summary>
/// 验签
/// </summary>
/// <param name="data">签名前的数据</param>
/// <param name="publickey">公钥</param>
/// <param name="sign">签名</param>
/// <param name="encoding"></param>
/// <returns></returns>
public static bool rsaCheck(string data, string publickey, string sign, string encoding = "UTF-8")
{
byte[] bt = Encoding.GetEncoding(encoding).GetBytes(data);
byte[] bt2 = Convert.FromBase64String(sign);
RSA_PEM pem = RSA_PEM.FromPEM(publickey);
using (RSACryptoServiceProvider provider = pem.GetRSA())
{
return(provider.VerifyData(bt, CryptoConfig.MapNameToOID("SHA256"), bt2));
}
}
/// <summary>
/// 签名
/// </summary>
/// <param name="str">需签名的数据</param>
/// <param name="privateKey">私钥</param>
/// <param name="encoding">编码格式 默认utf-8</param>
/// <returns></returns>
public static string Signature(string str, string privateKey, string encoding = "UTF-8")
{
byte[] bt = Encoding.GetEncoding(encoding).GetBytes(str);
RSA_PEM pem = RSA_PEM.FromPEM(privateKey);
using (RSACryptoServiceProvider provider = pem.GetRSA())
{
byte[] inArray = provider.SignData(bt, CryptoConfig.MapNameToOID("SHA256"));
string sign = Convert.ToBase64String(inArray);
return(sign);
}
}