public static byte[] KrypterData(byte[] ukryptertBytes, X509Certificate sertifikat)
{
/* AlgorithmIdentifier hash = new AlgorithmIdentifier(NistObjectIdentifiers.IdSha256, DerNull.Instance);
* AlgorithmIdentifier mask = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdMgf1, hash);
* AlgorithmIdentifier pSource = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdPSpecified, new DerOctetString(new byte[0]));
* RsaesOaepParameters parameters = new RsaesOaepParameters(hash, mask, pSource);
* AlgorithmIdentifier keyEncryptionScheme = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdRsaesOaep, parameters);*/
CmsEnvelopedDataGenerator envelopedDataGenerator = new CmsEnvelopedDataGenerator();
envelopedDataGenerator.AddKeyTransRecipient(sertifikat);
CmsEnvelopedData cmsData = envelopedDataGenerator.Generate(new CmsProcessableByteArray(ukryptertBytes), CmsEnvelopedGenerator.Aes256Cbc);
return(cmsData.GetEncoded());
}
public string Encrypt(string plainText)
{
byte[] plainBytes = Encoding.UTF8.GetBytes(plainText);
CmsProcessableByteArray cpba = new CmsProcessableByteArray(plainBytes);
CmsEnvelopedDataGenerator envelopedGen = new CmsEnvelopedDataGenerator();
foreach (X509Certificate2 cert in publicCerts)
{
Org.BouncyCastle.X509.X509Certificate bouncyCert = DotNetUtilities.FromX509Certificate(cert);
AsymmetricKeyParameter keyParameter = bouncyCert.GetPublicKey();
envelopedGen.AddKeyTransRecipient(bouncyCert);
}
CmsEnvelopedData envelopedData = envelopedGen.Generate(cpba, CmsEnvelopedGenerator.Aes256Cbc);
string cipherString = Convert.ToBase64String(envelopedData.GetEncoded());
return(cipherString);
}