Function: getEncryptionKey(uint256 _keyId)

This function verifies keyId is the most recently registered encryptionKeys inserted via registerNewEncryptionKey by the KEY_MANAGER_ROLE and returns it. It is called in the deposit flow by L1ERC20GatewayValidium::_deposit for sanity checks on the key.

Inputs

• _keyId

  • Control: Arbitrary caller.

  • Constraints: Must be the last one inserted in encryptionKeys.

  • Impact: Return the last encryptionKey if keyId is the last one.

Branches and code coverage

Intended branches

• Verifies at least one key exists.

  Test coverage

• Returns the last key value, if keyId represents the last key ID.

  Test coverage