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