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Subject[PATCH v2 00/10] crypto: AF_ALG: add AEAD and RNG support
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Hi,

This patch set adds AEAD and RNG support to the AF_ALG interface
exported by the kernel crypto API. By extending AF_ALG with AEAD and RNG
support, all cipher types the kernel crypto API allows access to are
now accessible from userspace.

The RNG support is stand-alone.

The AEAD implementation is added to algif_skcipher.c to prevent
re-implementation of the memory moving logic.

The extension for the AEAD support can be summarized with the following
types of changes:

* select the correct crypto API functions (either the ablkcipher
or the aead functions)

* apply the additional data needed for AEAD at the right time
(associated data, authentication tag) -- this includes the addition
of user space interfaces to allow setting this data.

* add the calculation for the memory size needed for encryption and
decryption.

In addition, the patch set adds a getsockopt implementation to skcipher to
allow user space to inquire about properties of the ciphers (IV size,
block size, authentication data size). This extension would be needed for a
generic user space usage of these ciphers.

The new AEAD and RNG interfaces are fully tested with the test application
provided at [1]. That test application exercises all newly added user space
interfaces.

The patch set was tested on x86_64 and i386.

[1] http://www.chronox.de/libkcapi.html

Changes v2:
* rebase to current cryptodev-2.6 tree
* use memzero_explicit to zeroize AEAD associated data
* use sizeof for determining length of AEAD associated data
* update algif_rng.c covering all suggestions from Daniel Borkmann
<dborkman@redhat.com>
* addition of patch 9: add digestsize interface for hashes
* addition of patch to update documentation covering the userspace interface
* change numbers of getsockopt options: separate them from sendmsg interface
definitions

Stephan Mueller (10):
crypto: AF_ALG: add user space interface for AEAD
crypto: AF_ALG: user space interface for cipher info
crypto: AF_ALG: extend data structuers for AEAD
crypto: AF_ALG: crypto API calls to inline functions
crypto: AF_ALG: add AEAD support
crypto: AF_ALG: make setkey optional
crypto: AF_ALG: add random number generator support
crypto: AF_ALG: enable RNG interface compilation
crypto: AF_ALG: user space interface for hash info
crypto: AF_ALG: document the user space interface

Documentation/crypto/crypto-API-userspace.txt | 95 ++++++-
crypto/Kconfig | 9 +
crypto/Makefile | 1 +
crypto/af_alg.c | 20 ++
crypto/algif_hash.c | 35 ++-
crypto/algif_rng.c | 186 ++++++++++++++
crypto/algif_skcipher.c | 352 +++++++++++++++++++++++---
include/crypto/if_alg.h | 2 +
include/uapi/linux/if_alg.h | 15 ++
9 files changed, 683 insertions(+), 32 deletions(-)
create mode 100644 crypto/algif_rng.c

--
2.1.0




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