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.. SPDX-License-Identifier: GPL-2.0-or-later
Unauthenticated encryption
==========================
These APIs provide support for unauthenticated encryption and decryption,
including bare stream ciphers and other length-preserving algorithms such as
block ciphers in XTS mode. The legitimate use cases for these algorithms are:
- Support for legacy protocols that really should have chosen an authenticated
mode (or even another primitive entirely) but didn't.
- Internal components of authenticated modes. For example, AES-CTR is used by
AES-GCM and AES-CCM internally.
- Storage encryption that cannot accommodate ciphertext expansion. Usually
AES-XTS is used for this.
- Stream ciphers for key derivation and random number generation.
Besides the above, these shouldn't be used.
AES-CBC and AES-CBC-CTS
-----------------------
This API provides support for AES in the CBC and CBC-CTS modes of operation.
.. kernel-doc:: include/crypto/aes-cbc.h
AES-CTR and AES-XCTR
--------------------
This API provides support for AES in the CTR and XCTR modes of operation.
.. kernel-doc:: include/crypto/aes-ctr.h
AES-ECB
-------
This API provides support for AES in the ECB mode of operation.
.. kernel-doc:: include/crypto/aes-ecb.h
AES-XTS
-------
This API provides support for AES in the XTS mode of operation.
.. kernel-doc:: include/crypto/aes-xts.h
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