MS File Explorer PlugIn for decrypting and verifying files (file extensions CRP, SGN and SME), which were encrypted and / or signed with the abylon protection manager (apm) or WinCrypt. The program have an integrated certificate manager for X.509 certificate administration (PKCS / RSA) and support also the automatic storing of public keys during the verifying (to check the signature) and the generating of self-signed certificates.