This patch implements CTR mode for IPsec.
It is based off of RFC 3686.

Please note:
1. CTR turns a block cipher into a stream cipher.
Encryption is done in blocks, however the last block
may be a partial block.

A "counter block" is encrypted, creating a keystream
that is xor'ed with the plaintext. The counter portion
of the counter block is incremented after each block
of plaintext is encrypted.
Decryption is performed in same manner.

2. The CTR counterblock is composed of,
        nonce + IV + counter

The size of the counterblock is equivalent to the
blocksize of the cipher.
        sizeof(nonce) + sizeof(IV) + sizeof(counter) = blocksize

The CTR template requires the name of the cipher
algorithm, the sizeof the nonce, and the sizeof the iv.
        ctr(cipher,sizeof_nonce,sizeof_iv)

So for example,
        ctr(aes,4,8)
specifies the counterblock will be composed of 4 bytes
from a nonce, 8 bytes from the iv, and 4 bytes for counter
since aes has a blocksize of 16 bytes.

3. The counter portion of the counter block is stored
in big endian for conformance to rfc 3686.
Signed-off-by: NJoy Latten <latten@austin.ibm.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch moves the sg_init_table out of the timing loops for hash
algorithms so that it doesn't impact on the speed test results.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use sg_init_one() and sg_init_table() as needed.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NJens Axboe <jens.axboe@oracle.com>

XTS currently considered to be the successor of the LRW mode by the IEEE1619
workgroup. LRW was discarded, because it was not secure if the encyption key
itself is encrypted with LRW.

XTS does not have this problem. The implementation is pretty straightforward,
a new function was added to gf128mul to handle GF(128) elements in ble format.
Four testvectors from the specification
	http://grouper.ieee.org/groups/1619/email/pdf00086.pdf
were added, and they verify on my system.
Signed-off-by: NRik Snel <rsnel@cube.dyndns.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch adds support for the SEED cipher (RFC4269).

This patch have been used in few VPN appliance vendors in Korea for
several years.  And it was verified by KISA, who developed the
algorithm itself.

As its importance in Korean banking industry, it would be great
if linux incorporates the support.
Signed-off-by: NHye-Shik Chang <perky@FreeBSD.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The return value of crypto_hash_final isn't checked in test_hash_cycles.
This patch corrects this.  Thanks to Eric Sesterhenn for reporting this.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch converts the tcrypt module to use the asynchronous block cipher
interface.  As all synchronous block ciphers can be used through the async
interface, tcrypt is still able to test them.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch fixes loading the tcrypt module while deflate isn't available
at all (isn't build).
Signed-off-by: NSebastian Siewior <linux-crypto@ml.breakpoint.cc>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch adds the code of Camellia code for testing module.
Signed-off-by: NNoriaki TAKAMIYA <takamiya@po.ntts.co.jp>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The crypto_comp conversion missed the last remaining crypto_alloc_tfm
call.  This patch replaces it with crypto_alloc_comp.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add a crypto module to provide FCrypt encryption as used by RxRPC.
Signed-Off-By: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch adds tests for SHA384 HMAC and SHA512 HMAC to the tcrypt module. Test data was taken from
RFC4231. This patch is a follow-up to the discovery (bug 7646) that the kernel SHA384 HMAC
implementation was not generating proper SHA384 HMACs.
Signed-off-by: NAndrew Donofrio <linuxbugzilla@kriptik.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Do modprobe tcrypt mode=10 to check the included test vectors, they are
from: http://grouper.ieee.org/groups/1619/email/pdf00017.pdf and from
http://www.mail-archive.com/stds-p1619@listserv.ieee.org/msg00173.html.

To make the last test vector fit, I had to increase the buffer size of
input and result to 512 bytes.
Signed-off-by: NRik Snel <rsnel@cube.dyndns.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

est vectors of XCBC with AES-128.
Signed-off-by: NKazunori MIYAZAWA <miyazawa@linux-ipv6.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch converts all users to use the new crypto_comp type and the
crypto_has_* functions.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch converts tcrypt to use the new HMAC template rather than the
hard-coded version of HMAC.  It also converts all digest users to use
the new cipher interface.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch converts tcrypt to use the new block cipher type where
applicable.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Now that crc32c has been fixed to conform with standard digest semantics,
we can use test_hash for it.  I've turned the last test into a chunky
test.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Now that the tfm is passed directly to setkey instead of the ctx, we no
longer need to pass the &tfm->crt_flags pointer.

This patch also gets rid of a few unnecessary checks on the key length
for ciphers as the cipher layer guarantees that the key length is within
the bounds specified by the algorithm.

Rather than testing dia_setkey every time, this patch does it only once
during crypto_alloc_tfm.  The redundant check from crypto_digest_setkey
is also removed.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The convention for setkey is that once it is set it should not change,
in particular, init must not wipe out the key set by it.  In fact, init
should always be used after setkey before any digestion is performed.

The only user of crc32c that sets the key is tcrypt.  This patch adds
the necessary init calls there.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch adds speed tests (benchmarks) for digest algorithms.
Tests are run with different buffer sizes (16 bytes, ... 8 kBytes)
and with each buffer multiple tests are run with different update()
sizes (e.g. hash 64 bytes buffer in four 16 byte updates).
There is no correctness checking of the result and all tests and
algorithms use the same input buffer.
Signed-off-by: NMichal Ludvig <michal@logix.cz>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Intentionaly return -EAGAIN from module_init() to ensure
it doesn't stay loaded in the kernel.  The module does all
its work from init() and doesn't offer any runtime
functionality => we don't need it in the memory, do we?
Signed-off-by: NMichal Ludvig <michal@logix.cz>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

Add new test vectors to the AES test suite for AES CBC and AES with plaintext
larger than AES blocksize.
Signed-off-by: NJan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

This patch rewrites various occurences of &sg[0] where sg is an array
of length one to simply sg.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

This patch uses sg_set_buf/sg_init_one in some places where it was
duplicated.
Signed-off-by: NDavid Hardeman <david@2gen.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Greg KH <greg@kroah.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>

The XTEA implementation was incorrect due to a misinterpretation of
operator precedence.  Because of the wide-spread nature of this
error, the erroneous implementation will be kept, albeit under the
new name of XETA.
Signed-off-by: NAaron Grothe <ajgrothe@yahoo.com>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

After using this facility for a while to test my changes to the
cipher crypt() layer, I realised that I should've listend to Dave
and made this thing use CPU cycle counters :) As it is it's too
jittery for me to feel safe about relying on the results.

So here is a patch to make it use CPU cycles by default but fall
back to jiffies if the user specifies a non-zero sec value.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The existing keys used in the speed tests do not pass the 3DES quality check.
This patch makes it use the template keys instead.

Other algorithms can supply template keys through the same interface if needed.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

From: Reyk Floeter <reyk@vantronix.net>

I recently had the requirement to do some benchmarking on cryptoapi, and
I found reyk's very useful performance test patch [1].

However, I could not find any discussion on why that extension (or
something providing a similar feature but different implementation) was
not merged into mainline.  If there was such a discussion, can someone
please point me to the archive[s]?

I've now merged the old patch into 2.6.12-rc1, the result can be found
attached to this email.

[1] http://lists.logix.cz/pipermail/padlock/2004/000010.htmlSigned-off-by: NHarald Welte <laforge@gnumonks.org>
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

It seems that bad code tends to get copied (see test_cipher_speed).  So let's
kill this idiom before it spreads any further.
Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!