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Stephan Mueller 400c40cf78 crypto: algif - add AEAD support 
This patch adds the AEAD support for AF_ALG.

The implementation is based on algif_skcipher, but contains heavy
modifications to streamline the interface for AEAD uses.

To use AEAD, the user space consumer has to use the salg_type named
"aead".

The AEAD implementation includes some overhead to calculate the size of
the ciphertext, because the AEAD implementation of the kernel crypto API
makes implied assumption on the location of the authentication tag. When
performing an encryption, the tag will be added to the created
ciphertext (note, the tag is placed adjacent to the ciphertext). For
decryption, the caller must hand in the ciphertext with the tag appended
to the ciphertext. Therefore, the selection of the used memory
needs to add/subtract the tag size from the source/destination buffers
depending on the encryption type. The code is provided with comments
explaining when and how that operation is performed.

A fully working example using all aspects of AEAD is provided at
http://www.chronox.de/libkcapi.html

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 		2015-03-04 22:12:39 +13:00
..
asymmetric_keys
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async_tx
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842.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
Kconfig crypto: powerpc/sha1 - kernel config 2015-03-02 23:22:20 +13:00
Makefile crypto: algif_rng - enable RNG interface compilation 2014-12-29 21:39:27 +11:00
ablk_helper.c
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ablkcipher.c crypto: replace scatterwalk_sg_next with sg_next 2015-01-26 11:34:22 +11:00
aead.c crypto: aead - fixed style error in aead.c 2014-12-22 23:02:35 +11:00
aes_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
af_alg.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2015-02-14 09:47:01 -08:00
ahash.c crypto: replace scatterwalk_sg_next with sg_next 2015-01-26 11:34:22 +11:00
algapi.c crypto: api - fixed style erro in algapi.c 2014-12-22 23:02:37 +11:00
algboss.c
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algif_aead.c crypto: algif - add AEAD support 2015-03-04 22:12:39 +13:00
algif_hash.c crypto: switch af_alg_make_sg() to iov_iter 2015-02-04 01:34:15 -05:00
algif_rng.c crypto: algif_rng - fix sparse non static symbol warning 2015-01-14 21:57:57 +11:00
algif_skcipher.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2015-02-14 09:47:01 -08:00
ansi_cprng.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
anubis.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
api.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
arc4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
authenc.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
authencesn.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
blkcipher.c
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blowfish_common.c
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blowfish_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
camellia_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
cast5_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
cast6_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
cast_common.c
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cbc.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
ccm.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
chainiv.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
cipher.c
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cmac.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
compress.c
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crc32.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
crc32c_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
crct10dif_common.c
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crct10dif_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
cryptd.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
crypto_null.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
crypto_user.c crypto: user - add MODULE_ALIAS 2014-11-26 20:06:29 +08:00
crypto_wq.c
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ctr.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
cts.c crypto: cts - Weed out non-CBC algorithms 2015-01-20 14:44:15 +11:00
deflate.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
des_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
drbg.c Revert "crypto: drbg - use memzero_explicit() for clearing sensitive data" 2015-01-05 10:44:09 +11:00
ecb.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
eseqiv.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
fcrypt.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
fips.c
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gcm.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
gf128mul.c
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ghash-generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
hash_info.c
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hmac.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
internal.h
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khazad.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
krng.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
lrw.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
lz4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
lz4hc.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
lzo.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
mcryptd.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
md4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
md5.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
memneq.c
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michael_mic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
pcbc.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
pcompress.c
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pcrypt.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
proc.c
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ripemd.h
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rmd128.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
rmd160.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
rmd256.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
rmd320.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
rng.c
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salsa20_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
scatterwalk.c crypto: replace scatterwalk_sg_next with sg_next 2015-01-26 11:34:22 +11:00
seed.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
seqiv.c crypto: seqiv - Ensure that IV size is at least 8 bytes 2015-01-20 14:44:16 +11:00
serpent_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
sha1_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
sha256_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
sha512_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
shash.c
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tcrypt.c crypto: tcrypt - do not allocate iv on stack for aead speed tests 2015-02-04 20:59:42 +11:00
tcrypt.h
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tea.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
testmgr.c crypto: testmgr - limit IV copy length in aead tests 2015-02-04 20:59:41 +11:00
testmgr.h
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tgr192.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
twofish_common.c
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twofish_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
vmac.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
wp512.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
xcbc.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
xor.c
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xts.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
zlib.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00