/// <summary>
/// RSA签名验证
/// </summary>
/// <param name="strKeyPublic">公钥</param>
/// <param name="strHashbyteDeformatter">Hash描述</param>
/// <param name="strDeformatterData">签名后的结果</param>
/// <returns></returns>
public static bool SignatureDeformatter(string strKeyPublic, string data, string sign)
{
try
{
byte[] DeformatterData;
byte[] HashbyteDeformatter;
SHA1 md = SHA1.Create();
HashbyteDeformatter = md.ComputeHash(Encoding.UTF8.GetBytes(data));
DeformatterData = Convert.FromBase64String(sign);
RSACryptoServiceProvider RSA = RSACryptoService.CreateRsaProviderFromPublicKey(strKeyPublic);
RSAPKCS1SignatureDeformatter RSADeformatter = new RSAPKCS1SignatureDeformatter(RSA);
//指定解密的时候HASH算法为MD5
RSADeformatter.SetHashAlgorithm("SHA1");
if (RSADeformatter.VerifySignature(HashbyteDeformatter, DeformatterData))
{
return(true);
}
else
{
return(false);
}
}
catch (Exception ex)
{
throw ex;
}
}
public static bool Verify(string PublicKey, string data, string Signature)
{
byte[] sign_byte = Convert.FromBase64String(Signature);
byte[] data_byte = Encoding.UTF8.GetBytes(data);
RSACryptoServiceProvider rsa = RSACryptoService.CreateRsaProviderFromPublicKey(PublicKey);
//返回数据验证结果
return(rsa.VerifyData(data_byte, "SHA1", sign_byte));
}