This figure consists of five boxes:

• Application: This box contains the following pseudocode:

  c:Cipher.getInstance("AES");

• JCA/JCE: This box contains the following list:

  • Signature
  • Message Digest
  • Key Script Generator
  • Key Factory
  • Algorithm Parameters
  • Cipher
  • Key Agreement
  • Key Generator
  • Secret Key Factory
  • MAC

• CSP, CSP2, CSP3: These boxes represent cryptographic service providers

• The fifth box represents CSP3. It contains the following headers and pseudocode:

  • Provider.class

    "Cipher.AES" -> "com.foo.AESCipher"

  • com.foo.AESCipher.class

    package com.foo:
      class AESCipher extends CipherSPi {
        .
        .
        .
      }

Arrows connect the boxes as follows:

• From Application to JCA/JCE
• From JCA/JCE to CSP1, CSP2, and CSP3 (the arrow branches)

A dotted line connects CSP3 to the headings Provider.class and com.foo.AESCipher.class