Capabilities which this class can indicate are capabilities of symetric
encryption algorithm: DES_EDE3_CBC, RC2_CBC with 128bit key, RC2_CBC with
64bit key, DES and RC2_CBC with 40bit key.
DESede3CBCParameter is parameter used in Content Encryption Algorithm
Identifier in CMS object for encrypted message, for DES_EDE3_CBC and DES
algorithms.
RecipientInfos class is DER encoded container, represented in ASN.1 notation
according to RFC2630, used for storing individual information needed for all
recipients of encrypted message.
SignerInfos class is DER encoded container, represented in ASN.1 notation
according to RFC2630, used for storing individual information about each signer
of the signed message.