Other Library Functions

blowfish.state

data type

Library: Blowfish (OMBLOWFISH)
Import : omblowfish.xmd


Purpose

The blowfish.state opaque data type carries state information between calls to the functions of the OMBLOWFISH library. An instance of state also contains information about the encryption key being used to encrypt or decrypt the data.

Example

Once you have declared an instance of blowfish.state, you must initialize it using blowfish.set-encryption-key. 

  import "omblowfish.xmd" prefixed by blowfish.
  
  process
     local blowfish.state state
  
     set-encryption-key ("ENCRYPTION KEY", state)

The OMBLOWFISH library exports a conversion function from string to blowfish.state that can be used to write this example more concisely: 

  import "omblowfish.xmd" prefixed by blowfish.
  
  process
     local blowfish.state state initial { "ENCRYPTION KEY" }

Usage Notes

To use this type, you must import OMBLOWFISH into your program using an import declaration such as: 

  import "omblowfish.xmd" prefixed by blowfish.

Within your program, you can create as many instances of the blowfish.state data type as you require. A instance of the blowfish.state data type can be declared as a global, local, or even passed as an argument to a function.

A particular instance of blowfish.state must be initialized using blowfish.set-encryption-key before being used.

Other Library Functions