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Link to figure The Cipher Class

This figure consists of boxes labeled as follows:

• Key: Contains a box labeled Secret Key
• Plaintext
• These two boxes are attached to each other:
  • Cipher (AES): Box 1 of 2
  • Encrypt
• Algorithm Parameters
• Ciphertext
• These two boxes are attached to each other:
  • Cipher (AES): Box 2 of 2
  • Decrypt
• Plaintext

Labeled arrows connect these boxes:

• update(): From Plaintext to the Cipher (AES) #1
• doFinal(): From Plaintext to Encrypt
• update(): From Ciphertext to the Cipher (AES) #2
• doFinal(): From Ciphertext to Decrypt

Unlabeled arrows connect these boxes:

• From Key to the Cipher (AES) #1 and Cipher (AES) #2 (the arrow branches)
• From Cipher (AES) #1 to Algorithm Parameters
• From Algorithm Parameters to the Cipher (AES) compartment of the Decrypt box
• From Cipher (AES) #2 to Plaintext
• From Decrypt to Plaintext