private static byte[] DecryptDataWithPublicKeyHashPrefix(byte[] sebData, bool forEditing, ref X509Certificate2 sebFileCertificateRef)
{
X509Certificate2 certificateFromStore = SEBProtectionController.GetCertificateFromStore(SEBConfigFileManager.GetPrefixDataFromData(ref sebData, 20));
if (certificateFromStore == null)
{
int num = (int)SEBMessageBox.Show(SEBUIStrings.errorDecryptingSettings, SEBUIStrings.certificateNotFoundInStore, MessageBoxIcon.Hand, MessageBoxButtons.OK, forEditing);
return((byte[])null);
}
if (forEditing)
{
sebFileCertificateRef = certificateFromStore;
}
sebData = SEBProtectionController.DecryptDataWithCertificate(sebData, certificateFromStore);
return(sebData);
}
/// ----------------------------------------------------------------------------------------
/// <summary>
/// Helper method which fetches the public key hash from a byte array,
/// retrieves the according cryptographic identity from the certificate store
/// and returns the decrypted bytes
/// </summary>
/// ----------------------------------------------------------------------------------------
private static byte[] DecryptDataWithPublicKeyHashPrefix(byte[] sebData, bool forEditing, ref X509Certificate2 sebFileCertificateRef)
{
// Get 20 bytes public key hash prefix
// and remaining data with the prefix stripped
byte[] publicKeyHash = GetPrefixDataFromData(ref sebData, PUBLIC_KEY_HASH_LENGTH);
X509Certificate2 certificateRef = SEBProtectionController.GetCertificateFromStore(publicKeyHash);
if (certificateRef == null)
{
SEBMessageBox.Show(SEBUIStrings.errorDecryptingSettings, SEBUIStrings.certificateNotFoundInStore, MessageBoxIcon.Error, MessageBoxButtons.OK, neverShowTouchOptimized: forEditing);
return null;
}
// If these settings are being decrypted for editing, we will return the decryption certificate reference
// in the variable which was passed as reference when calling this method
if (forEditing) sebFileCertificateRef = certificateRef;
sebData = SEBProtectionController.DecryptDataWithCertificate(sebData, certificateRef);
return sebData;
}