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Stephan Mueller 0c1e16cd1e crypto: algif_aead - fix AEAD tag memory handling 
For encryption, the AEAD ciphers require AAD || PT as input and generate
AAD || CT || Tag as output and vice versa for decryption. Prior to this
patch, the AF_ALG interface for AEAD ciphers requires the buffer to be
present as input for encryption. Similarly, the output buffer for
decryption required the presence of the tag buffer too. This implies
that the kernel reads / writes data buffers from/to kernel space
even though this operation is not required.

This patch changes the AF_ALG AEAD interface to be consistent with the
in-kernel AEAD cipher requirements.

Due to this handling, he changes are transparent to user space with one
exception: the return code of recv indicates the mount of output buffer.
That output buffer has a different size compared to before the patch
which implies that the return code of recv will also be different.
For example, a decryption operation uses 16 bytes AAD, 16 bytes CT and
16 bytes tag, the AF_ALG AEAD interface before showed a recv return
code of 48 (bytes) whereas after this patch, the return code is 32
since the tag is not returned any more.

Reported-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 		2016-12-07 19:55:36 +08:00
..
asymmetric_keys KEYS: Fix for erroneous trust of incorrectly signed X.509 certs 2016-07-18 12:19:47 +10:00
async_tx async_pq_val: fix DMA memory leak 2016-10-05 06:18:09 +05:30
.gitignore crypto: rsa - add .gitignore for crypto/*.-asn1.[ch] files 2015-06-25 23:29:24 +08:00
842.c crypto: 842 - change 842 alg to use software 2015-05-11 15:06:43 +08:00
Kconfig crypto: powerpc - CRYPT_CRC32C_VPMSUM should depend on ALTIVEC 2016-08-09 18:25:09 +08:00
Makefile crypto: rsa - Add Makefile dependencies to fix parallel builds 2016-11-30 19:46:45 +08:00
ablk_helper.c crypto: ablk_helper - Fix cryptd reordering 2016-06-23 18:29:53 +08:00
ablkcipher.c crypto: skcipher - Remove top-level givcipher interface 2016-07-18 17:35:46 +08:00
aead.c crypto: aead - Remove blkcipher null for IV generators 2016-07-18 17:35:43 +08:00
aes_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
af_alg.c crypto: af_alg - Forbid bind(2) when nokey child sockets are present 2016-01-18 18:16:33 +08:00
ahash.c crypto: ahash - Add padding in crypto_ahash_extsize 2016-07-01 23:45:03 +08:00
akcipher.c crypto: akcipher - add akcipher declarations needed by templates. 2015-12-09 20:03:57 +08:00
algapi.c crypto: api - Add crypto_inst_setname 2016-07-01 23:45:11 +08:00
algboss.c crypto: algboss - Remove reference to nivaead 2015-08-17 16:53:41 +08:00
algif_aead.c crypto: algif_aead - fix AEAD tag memory handling 2016-12-07 19:55:36 +08:00
algif_hash.c crypto: algif_hash - Fix result clobbering in recvmsg 2016-11-22 15:02:24 +08:00
algif_rng.c crypto: algif_rng - Remove obsolete const-removal cast 2015-04-22 09:30:21 +08:00
algif_skcipher.c crypto: algif_skcipher - Do not set MAY_BACKLOG on the async path 2016-02-06 15:23:55 +08:00
ansi_cprng.c crypto: ansi_cprng - Convert to new rng interface 2015-04-22 09:30:18 +08:00
anubis.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
api.c crypto: api - Only abort operations on fatal signal 2015-10-20 21:59:25 +08:00
arc4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
authenc.c crypto: authenc - Use skcipher 2016-07-18 17:35:38 +08:00
authencesn.c crypto: authencesn - Use skcipher 2016-07-18 17:35:39 +08:00
blkcipher.c crypto: skcipher - Fix blkcipher walk OOM crash 2016-09-13 18:44:57 +08:00
blowfish_common.c crypto: blowfish - split generic and common c code 2011-09-22 21:25:25 +10:00
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 crypto: make tables used from assembler __visible 2013-08-14 20:42:03 +10:00
cbc.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
ccm.c crypto: ccm - Use skcipher 2016-07-18 17:35:40 +08:00
chacha20_generic.c random: replace non-blocking pool with a Chacha20-based CRNG 2016-07-03 00:57:23 -04:00
chacha20poly1305.c crypto: chacha20poly1305 - Use skcipher 2016-07-18 17:35:41 +08:00
cipher.c crypto: cipher - Fix checkpatch errors 2010-02-16 20:31:37 +08:00
cmac.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
compress.c crypto: compress - Fix checkpatch errors 2010-02-16 20:31:04 +08:00
crc32_generic.c crypto: crc32 - Rename generic implementation 2016-01-30 22:11:22 +08:00
crc32c_generic.c crypto: crc32c - Fix crc32c soft dependency 2016-01-19 15:52:10 +08:00
crct10dif_common.c crypto: crct10dif - Add fallback for broken initrds 2013-09-12 15:31:34 +10:00
crct10dif_generic.c crypto: squash lines for simple wrapper functions 2016-09-13 20:27:26 +08:00
cryptd.c crypto: cryptd - initialize child shash_desc on import 2016-09-07 21:04:36 +08:00
crypto_engine.c kthread: kthread worker API cleanup 2016-10-11 15:06:33 -07:00
crypto_null.c crypto: null - Remove default null blkcipher 2016-07-18 17:35:44 +08:00
crypto_user.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2016-07-21 12:26:55 +08:00
crypto_wq.c crypto: crypto_wq - Fix late crypto work queue initialization 2014-03-21 21:54:28 +08:00
ctr.c crypto: ctr - Use skcipher in rfc3686 2016-07-18 17:35:39 +08:00
cts.c crypto: cts - Convert to skcipher 2016-07-18 17:35:44 +08:00
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
dh.c crypto: rsa - Generate fixed-length output 2016-07-01 23:45:18 +08:00
dh_helper.c crypto: dh - Add DH software implementation 2016-06-23 18:29:56 +08:00
drbg.c crypto: drbg - prevent invalid SG mappings 2016-11-30 19:46:44 +08:00
ecb.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
ecc.c crypto: ecdh - make ecdh_shared_secret unique 2016-06-24 21:24:59 +08:00
ecc.h crypto: ecdh - make ecdh_shared_secret unique 2016-06-24 21:24:59 +08:00
ecc_curve_defs.h crypto: ecdh - Add ECDH software support 2016-06-23 18:29:57 +08:00
ecdh.c crypto: ecdh - make ecdh_shared_secret unique 2016-06-24 21:24:59 +08:00
ecdh_helper.c crypto: ecdh - Add ECDH software support 2016-06-23 18:29:57 +08:00
echainiv.c crypto: echainiv - Replace chaining with multiplication 2016-09-13 18:44:57 +08:00
fcrypt.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
fips.c crypto: fips - Move fips_enabled sysctl into fips.c 2015-04-23 14:18:09 +08:00
gcm.c crypto: gcm - Fix IV buffer size in crypto_gcm_setkey 2016-10-02 22:31:52 +08:00
gf128mul.c crypto: gf128mul - fix call to memset() 2011-07-08 17:21:21 +08:00
ghash-generic.c crypto: ghash-generic - move common definitions to a new header file 2016-10-02 22:26:40 +08:00
hash_info.c keys, trusted: select hash algorithm for TPM2 chips 2015-12-20 15:27:12 +02:00
hmac.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
internal.h crypto: api - Add crypto_type_has_alg helper 2016-01-25 22:42:12 +08:00
jitterentropy-kcapi.c crypto: jitterentropy - use ktime_get_ns as fallback 2016-06-24 21:24:58 +08:00
jitterentropy.c crypto: jitterentropy - Delete unnecessary checks before the function call "kzfree" 2015-06-25 23:18:33 +08:00
keywrap.c crypto: keywrap - memzero the correct memory 2016-02-01 22:27:05 +08:00
khazad.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
kpp.c crypto: kpp - Key-agreement Protocol Primitives API (KPP) 2016-06-23 18:29:56 +08:00
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: lzo - get rid of superfluous __GFP_REPEAT 2016-04-15 22:36:36 +08:00
mcryptd.c crypto: squash lines for simple wrapper functions 2016-09-13 20:27:26 +08:00
md4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
md5.c crypto: hash - add zero length message hash for shax and md5 2015-12-22 20:43:35 +08:00
memneq.c crypto: memneq - fix for archs without efficient unaligned access 2013-12-09 20:09:12 +08:00
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
pcrypt.c crypto: aead - Remove CRYPTO_ALG_AEAD_NEW flag 2015-08-17 16:53:53 +08:00
poly1305_generic.c crypto: poly1305 - Export common Poly1305 helpers 2015-07-17 21:20:26 +08:00
proc.c crypto: fips - Move fips_enabled sysctl into fips.c 2015-04-23 14:18:09 +08:00
ripemd.h
…
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 crypto: rng - Do not free default RNG when it becomes unused 2015-06-22 15:49:18 +08:00
rsa-pkcs1pad.c crypto: rsa-pkcs1pad - Handle leading zero for decryption 2016-09-22 17:42:08 +08:00
rsa.c crypto: rsa - Generate fixed-length output 2016-07-01 23:45:18 +08:00
rsa_helper.c crypto: rsa - allow keys >= 2048 bits in FIPS mode 2016-08-24 21:07:10 +08:00
rsaprivkey.asn1 crypto: rsa - Store rest of the private key components 2016-07-05 23:05:26 +08:00
rsapubkey.asn1 crypto: akcipher - Changes to asymmetric key API 2015-10-14 22:23:16 +08:00
salsa20_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
scatterwalk.c crypto: scatterwalk - Remove unnecessary aliasing check in map_and_copy 2016-11-22 15:02:25 +08:00
seed.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
seqiv.c crypto: skcipher - Remove top-level givcipher interface 2016-07-18 17:35:46 +08:00
serpent_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
sha1_generic.c crypto: hash - add zero length message hash for shax and md5 2015-12-22 20:43:35 +08:00
sha3_generic.c crypto: sha3 - Add missing ULL suffixes for 64-bit constants 2016-08-08 23:43:46 +08:00
sha256_generic.c crypto: hash - add zero length message hash for shax and md5 2015-12-22 20:43:35 +08:00
sha512_generic.c crypto: sha512-generic - move to generic glue implementation 2015-04-10 21:39:41 +08:00
shash.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2016-03-17 11:22:54 -07:00
skcipher.c crypto: skcipher - Remove top-level givcipher interface 2016-07-18 17:35:46 +08:00
tcrypt.c crypto: sha3 - Add HMAC-SHA3 test modes and test vectors 2016-07-01 23:45:24 +08:00
tcrypt.h crypto: tcrypt - Add ChaCha20/Poly1305 speed tests 2015-07-17 21:20:20 +08:00
tea.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
testmgr.c crypto: testmgr - add guard to dst buffer for ahash_export 2016-10-02 22:33:43 +08:00
testmgr.h crypto: FIPS - allow tests to be disabled in FIPS mode 2016-08-31 23:21:25 +08:00
tgr192.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
twofish_common.c crypto: twofish-x86_64-3way - add lrw support 2011-11-09 11:53:32 +08:00
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 crypto: xor - Fix warning when XOR_SELECT_TEMPLATE is unset 2016-08-31 23:00:48 +08:00
xts.c crypto: xts - fix a little typo 2016-08-16 17:16:49 +08:00