/// <summary>
/// RSA encrypt
/// </summary>
/// <param name="publicKey">public key</param>
/// <param name="srcString">src string</param>
/// <param name="padding">rsa encryptPadding <see cref="RSAEncryptionPadding"/> RSAEncryptionPadding.Pkcs1 for linux/mac openssl </param>
/// <param name="isPemKey">set key is pem format,default is false</param>
/// <returns>encrypted string</returns>
public static string RSADecrypt(string privateKey, string srcString, RSAEncryptionPadding padding, bool isPemKey = false)
{
Check.Argument.IsNotEmpty(privateKey, nameof(privateKey));
Check.Argument.IsNotEmpty(srcString, nameof(srcString));
Check.Argument.IsNotNull(padding, nameof(padding));
RSA rsa;
if (isPemKey)
{
rsa = RsaProvider.FromPem(privateKey);
}
else
{
rsa = RSA.Create();
rsa.FromJsonString(privateKey);
}
using (rsa)
{
byte[] srcBytes = srcString.ToBytes();
byte[] decryptBytes = rsa.Decrypt(srcBytes, padding);
return(Encoding.UTF8.GetString(decryptBytes));
}
}
/// <summary>
/// RSA encrypt
/// </summary>
/// <param name="publicKey">public key</param>
/// <param name="srcString">src string</param>
/// <param name="padding">rsa encryptPadding <see cref="RSAEncryptionPadding"/> RSAEncryptionPadding.Pkcs1 for linux/mac openssl </param>
/// <param name="isPemKey">set key is pem format,default is false</param>
/// <returns>encrypted string</returns>
public static string RSAEncrypt(string publicKey, string srcString, RSAEncryptionPadding padding, bool isPemKey = false)
{
Check.Argument.IsNotEmpty(publicKey, nameof(publicKey));
Check.Argument.IsNotEmpty(srcString, nameof(srcString));
Check.Argument.IsNotNull(padding, nameof(padding));
RSA rsa;
if (isPemKey)
{
rsa = RsaProvider.FromPem(publicKey);
}
else
{
rsa = RSA.Create();
rsa.FromJsonString(publicKey);
}
using (rsa)
{
var maxLength = 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());
}
}
/// <summary>
/// RSA encrypt
/// </summary>
/// <param name="publicKey">public key</param>
/// <param name="data">src string</param>
/// <param name="padding">rsa encryptPadding <see cref="RSAEncryptionPadding"/> RSAEncryptionPadding.Pkcs1 for linux/mac openssl </param>
/// <param name="isPemKey">set key is pem format,default is false</param>
/// <returns>encrypted string</returns>
public static byte[] RSADecrypt(string privateKey, byte[] data, RSAEncryptionPadding padding, bool isPemKey = false)
{
Check.Argument.IsNotEmpty(privateKey, nameof(privateKey));
Check.Argument.IsNotNull(data, nameof(data));
Check.Argument.IsNotNull(padding, nameof(padding));
RSA rsa;
if (isPemKey)
{
rsa = RsaProvider.FromPem(privateKey);
}
else
{
rsa = RSA.Create();
rsa.FromJsonString(privateKey);
}
using (rsa)
{
byte[] srcBytes = data;
byte[] decryptBytes = rsa.Decrypt(srcBytes, padding);
return(decryptBytes);
}
}
/// <summary>
/// RSA From pem
/// </summary>
/// <param name="pem"></param>
/// <returns></returns>
public static RSA RSAFromPem(string pem)
{
Check.Argument.IsNotEmpty(pem, nameof(pem));
return(RsaProvider.FromPem(pem));
}
/// <summary>
/// RSA From pem
/// </summary>
/// <param name="pem"></param>
/// <returns></returns>
public static System.Security.Cryptography.RSA RSAFromPem(string pem)
{
Check.Argument.IsNotEmpty(pem, nameof(pem));
return(RsaProvider.FromPem(pem));
}
