A digital signature is an example of a message. The ciphertext is unreadable by anyone without the correct decryption key. Handle A pointer to a storage area allocated by the API library. The binding of a public key and other information to an entity. It is possible to have more than one identity bound to an entity.
Every identity has a type.
Some better known identity types are X.509 certificates and PGP certificates. The message format describes the layout and the contents of a message such as a digital signature. OCI See Oracle Call Interface. An application programming interface that allows applications written in C to interact with one or more Oracle servers. See Programmer's Guide to the Oracle Call Interface .