/// <summary>
/// RSA Verify
/// </summary>
/// <param name="content">raw content</param>
/// <param name="signStr">sign str</param>
/// <param name="publickKey">public key</param>
/// <param name="hashAlgorithmName">hashAlgorithm name</param>
/// <param name="rSASignaturePadding">ras siginature padding</param>
/// <param name="encoding">text encoding</param>
/// <returns></returns>
public static bool RSAVerify(string content, string signStr, string publickKey, HashAlgorithmName hashAlgorithmName, RSASignaturePadding rSASignaturePadding, Encoding encoding)
{
Check.Argument.IsNotEmpty(content, nameof(content));
Check.Argument.IsNotEmpty(signStr, nameof(signStr));
byte[] dataBytes = encoding.GetBytes(content);
byte[] signBytes = Convert.FromBase64String(signStr);
using (System.Security.Cryptography.RSA rsa = System.Security.Cryptography.RSA.Create())
{
rsa.FromJsonString(publickKey);
return(rsa.VerifyData(dataBytes, signBytes, hashAlgorithmName, rSASignaturePadding));
}
}
/// <summary>
/// RSA Sign
/// </summary>
/// <param name="content">raw content </param>
/// <param name="privateKey">private key</param>
/// <param name="hashAlgorithmName">hashAlgorithm name</param>
/// <param name="rSASignaturePadding">ras siginature padding</param>
/// <param name="encoding">text encoding</param>
/// <returns></returns>
public static string RSASign(string content, string privateKey, HashAlgorithmName hashAlgorithmName, RSASignaturePadding rSASignaturePadding, Encoding encoding)
{
Check.Argument.IsNotEmpty(content, nameof(content));
Check.Argument.IsNotEmpty(privateKey, nameof(privateKey));
Check.Argument.IsNotNull(rSASignaturePadding, nameof(rSASignaturePadding));
byte[] dataBytes = encoding.GetBytes(content);
using (System.Security.Cryptography.RSA rsa = System.Security.Cryptography.RSA.Create())
{
rsa.FromJsonString(privateKey);
var signBytes = rsa.SignData(dataBytes, hashAlgorithmName, rSASignaturePadding);
return(Convert.ToBase64String(signBytes));
}
}
public static string RSAEncrypt(string publicKey, string srcString, RSAEncryptionPadding padding)
{
Check.Argument.IsNotEmpty(publicKey, nameof(publicKey));
Check.Argument.IsNotEmpty(srcString, nameof(srcString));
Check.Argument.IsNotNull(padding, nameof(padding));
using (System.Security.Cryptography.RSA rsa = System.Security.Cryptography.RSA.Create())
{
rsa.FromJsonString(publicKey);
var maxLength = GetMaxRsaEncryptLengthClass.GetMaxRsaEncryptLength(rsa, padding);
var rawBytes = Encoding.UTF8.GetBytes(srcString);
if (rawBytes.Length > maxLength)
{
throw new OutofMaxlengthException($"'{srcString}' is out of max encrypt length {maxLength}", maxLength, rsa.KeySize, padding);
}
byte[] encryptBytes = rsa.Encrypt(rawBytes, padding);
return(encryptBytes.ToHexString());
}
}
