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[] EncryptData(string publicKeyString, byte[] dataToEncrypt)
{
byte[] cipherbytes;
using (var rsa = RSAPEMHelper.PublicKeyFromPem(publicKeyString))
{
cipherbytes = rsa.Encrypt(dataToEncrypt, false);
}
return(cipherbytes);
}