public static RSAParameters GetPrivateKeyRSAParameters(string privateKeyString)
{
using (var rsa = RsaPEMHelper.PrivateKeyFromPem(privateKeyString))
{
return(rsa.ExportParameters(true));
}
}
public static RSAParameters GetPublicKeyRSAParameters(string publicKeyString)
{
using (var rsa = RsaPEMHelper.PublicKeyFromPem(publicKeyString))
{
return(rsa.ExportParameters(false));
}
}
public static bool VerifySignature(string publicKeyString, byte[] hashOfDataToSign, byte[] signature)
{
using (var rsa = RsaPEMHelper.PublicKeyFromPem(publicKeyString))
{
var rsaDeformatter = new RSAPKCS1SignatureDeformatter(rsa);
rsaDeformatter.SetHashAlgorithm("SHA256");
return(rsaDeformatter.VerifySignature(hashOfDataToSign, signature));
}
}
public static byte[] CreateDigitalSignature(string privateKeyString, byte[] hashOfDataToSign)
{
using (var rsa = RsaPEMHelper.PrivateKeyFromPem(privateKeyString))
{
var rsaFormatter = new RSAPKCS1SignatureFormatter(rsa);
rsaFormatter.SetHashAlgorithm("SHA256");
return(rsaFormatter.CreateSignature(hashOfDataToSign));
}
}
public static byte[] DecryptData(string privateKeyString, byte[] dataToEncrypt)
{
byte[] plain;
using (var rsa = RsaPEMHelper.PrivateKeyFromPem(privateKeyString))
{
plain = rsa.Decrypt(dataToEncrypt, false);
}
return(plain);
}
public static byte[] EncryptData(string publicKeyString, byte[] dataToEncrypt)
{
byte[] cipherbytes;
using (var rsa = RsaPEMHelper.PublicKeyFromPem(publicKeyString))
{
cipherbytes = rsa.Encrypt(dataToEncrypt, false);
}
return(cipherbytes);
}
public static (string publicKey, string privateKey) AssignNewKey()
{
return(RsaPEMHelper.GenerateRsaKeyPair());
}
public static void AssignNewKey(string publicKeyPath, string privateKeyPath)
{
RsaPEMHelper.GenerateRsaKeyPairFiles(publicKeyPath, privateKeyPath);
}