unknown object in stream SymmetricKeyEncrypted

Sometimes if you try to decrypt an OpenPGP encrypted file you may encounter an IO exception with message ” unknown object in stream SymmetricKeyEncrypted“.

After an investigation, we found that such an exception is thrown when we try to decrypt a password based encrypted file (also known as conventional encrypted or PBE) created with PGP version 2.6.x or McAfee E-Business server 7.x.

Please update your version of OpenPGP Library for .NET version in order to resolve this error.

If you have any questions concerning this issue, please do not hesitate to contact us.