Bouncy Castle Cryptography Library 1.49
BCPG Support Packages 
Package Description
org.bouncycastle.bcpg
Low level classes for dealing with OpenPGP objects.
org.bouncycastle.bcpg.attr
Low level classes for dealing with OpenPGP user attributes.
org.bouncycastle.bcpg.sig
Low level classes for dealing with OpenPGP signature attributes.
OpenPGP Packages 
Package Description
org.bouncycastle.openpgp
High level classes for dealing with OpenPGP objects.
org.bouncycastle.openpgp.examples
Examples of use of the org.bouncycastle.openpgp package.
org.bouncycastle.openpgp.examples.test  
org.bouncycastle.openpgp.operator
Interfaces and abstract classes to provide the framework to support operations on the OpenPGP high level classes.
org.bouncycastle.openpgp.operator.bc
BC lightweight operators for dealing with OpenPGP objects.
org.bouncycastle.openpgp.operator.jcajce
JCA/JCE based operators for dealing with OpenPGP objects.
org.bouncycastle.openpgp.test
Regression tests and further examples of use for the org.bouncycastle.openpgp package.
Bouncy Castle Cryptography Library 1.49