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# Description of Figure The KeyAgreement Class

Link to figure The KeyAgreement Class

This figure is divided into halves by a dashed line. The top half is labeled Alice, and the bottom half is labeled Bob. The figure consists of boxes labeled as follows:

- These boxes are in Alice's half:
  - Key: This box contains a box labeled Alice's Private
  - Key: This box contains a box labeled Bob's Public
  - Key Agreement (DH)
  - Bytes: This box has another label, Bytes
- These boxes are in Bob's half:
  - Key: This box contains a box labeled Bob's Private
  - Key: This box contains a box labeled Alice's Public
  - Key Agreement (DH)
  - Bytes: This box has another label, Bytes

Labeled arrows connect these boxes:

- These arrows are in Alice's half:
  - `init()`: From Alice's Private Key to Key Agreement (DH)
  - `doPhase()`: From Bob's Public Key to Key Agreement (DH)
  - `generateSecret()`: From Key Agreement (DH) to Bytes
- These arrows are in Bob's half:
  - `init()`: From Bob's Private Key to Key Agreement (DH)
  - `doPhase()`: From Alice's Public Key to Key Agreement (DH)
  - `generateSecret()`: From Key Agreement (DH) to Bytes

A double-headed arrow joins the Bytes boxes in Alice's and Bob's halves. This arrow is labeled "Should be the same."

- `init()`: From key length to Key Generator (AES)
- `init()`: From AlgorithmParameterSpec to Key Generator (AES)
- `generateKey()`: From Key Generator (AES) to Secret Pair

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