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## Package javacardx.crypto

Extension package that contains functionality, which may be subject to export controls, for implementing a security and cryptography framework on the Java Card platform.

See:
Description

Interface Summary
KeyEncryption | `KeyEncryption` interface defines the methods used to enable encrypted key data access to a key implementation.

Class Summary
Cipher | The `Cipher` class is the abstract base class for Cipher algorithms.

## Package javacardx.crypto Description

Extension package that contains functionality, which may be subject to export controls, for implementing a security and cryptography framework on the Java Card platform. The platform must support this optional package only if cryptographic encryption and decryption functionality is included in the implementation. Classes that contain security and cryptography functionality that are not subject to export control restrictions are contained in the package `javacard.security`.

The `javacardx.crypto` package contains the `Cipher` class and the `KeyEncryption` interface. `Cipher` provides methods for encrypting and decrypting messages. `KeyEncryption` provides functionality that allows keys to be updated in a secure end-to-end fashion.

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