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674f368a95
linux/crypto
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Eric Biggers 674f368a95 crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 
The CRYPTO_TFM_RES_BAD_KEY_LEN flag was apparently meant as a way to
make the ->setkey() functions provide more information about errors.

However, no one actually checks for this flag, which makes it pointless.

Also, many algorithms fail to set this flag when given a bad length key.
Reviewing just the generic implementations, this is the case for
aes-fixed-time, cbcmac, echainiv, nhpoly1305, pcrypt, rfc3686, rfc4309,
rfc7539, rfc7539esp, salsa20, seqiv, and xcbc.  But there are probably
many more in arch/*/crypto/ and drivers/crypto/.

Some algorithms can even set this flag when the key is the correct
length.  For example, authenc and authencesn set it when the key payload
is malformed in any way (not just a bad length), the atmel-sha and ccree
drivers can set it if a memory allocation fails, and the chelsio driver
sets it for bad auth tag lengths, not just bad key lengths.

So even if someone actually wanted to start checking this flag (which
seems unlikely, since it's been unused for a long time), there would be
a lot of work needed to get it working correctly.  But it would probably
be much better to go back to the drawing board and just define different
return values, like -EINVAL if the key is invalid for the algorithm vs.
-EKEYREJECTED if the key was rejected by a policy like "no weak keys".
That would be much simpler, less error-prone, and easier to test.

So just remove this flag.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-01-09 11:30:53 +08:00
..
asymmetric_keys KEYS: trusted: Create trusted keys subsystem 2019-11-12 21:45:37 +02:00
async_tx treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 2019-06-05 17:37:06 +02:00
842.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
acompress.c crypto: algapi - make unregistration functions return void 2019-12-20 14:58:35 +08:00
adiantum.c crypto: poly1305 - move core routines into a separate library 2019-11-17 09:02:41 +08:00
aead.c crypto: aead - Split out geniv into its own module 2019-11-17 09:02:38 +08:00
aegis128-core.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
aegis128-neon-inner.c crypto: aegis128 - duplicate init() and final() hooks in SIMD code 2019-10-26 02:06:05 +11:00
aegis128-neon.c crypto: aegis128 - duplicate init() and final() hooks in SIMD code 2019-10-26 02:06:05 +11:00
aegis.h crypto: aegis128 - Fix -Wunused-const-variable warning 2019-08-30 18:05:30 +10:00
aes_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
aes_ti.c crypto: aes - create AES library based on the fixed time AES code 2019-07-26 14:55:33 +10:00
af_alg.c crypto: af_alg - Use bh_lock_sock in sk_destruct 2019-12-11 16:37:02 +08:00
ahash.c crypto: algapi - make unregistration functions return void 2019-12-20 14:58:35 +08:00
akcipher.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
algapi.c crypto: api - Retain alg refcount in crypto_grab_spawn 2019-12-27 18:18:03 +08:00
algboss.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
algif_aead.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
algif_hash.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
algif_rng.c net: remove sock_no_poll 2018-05-26 09:16:44 +02:00
algif_skcipher.c crypto: algif_skcipher - Use chunksize instead of blocksize 2019-10-05 01:04:31 +10:00
ansi_cprng.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 42 2019-05-24 17:27:12 +02:00
anubis.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
api.c crypto: api - fix unexpectedly getting generic implementation 2019-12-20 14:58:33 +08:00
arc4.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
authenc.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
authencesn.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
blake2b_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
blake2s_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
blowfish_common.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
blowfish_generic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
camellia_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
cast5_generic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 140 2019-05-30 11:25:16 -07:00
cast6_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
cast_common.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 44 2019-05-24 17:27:12 +02:00
cbc.c crypto: skcipher - Add skcipher_ialg_simple helper 2019-12-27 18:18:04 +08:00
ccm.c wusb: switch to cbcmac transform 2019-06-18 08:52:34 +02:00
cfb.c crypto: skcipher - Add skcipher_ialg_simple helper 2019-12-27 18:18:04 +08:00
chacha20poly1305.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
chacha_generic.c crypto: chacha_generic - remove unnecessary setkey() functions 2019-11-22 18:48:39 +08:00
cipher.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
cmac.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
compress.c crypto: compress - remove crt_u.compress (struct compress_tfm) 2019-12-11 16:37:01 +08:00
crc32_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
crc32c_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
crct10dif_common.c
crct10dif_generic.c crypto: run initcalls for generic implementations earlier 2019-04-18 22:15:03 +08:00
cryptd.c crypto: skcipher - remove the "blkcipher" algorithm type 2019-11-01 13:38:32 +08:00
crypto_engine.c crypto: ablkcipher - remove deprecated and unused ablkcipher support 2019-11-17 09:02:49 +08:00
crypto_null.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
crypto_user_base.c crypto: algapi - make unregistration functions return void 2019-12-20 14:58:35 +08:00
crypto_user_stat.c crypto: skcipher - remove the "blkcipher" algorithm type 2019-11-01 13:38:32 +08:00
ctr.c crypto: skcipher - Add skcipher_ialg_simple helper 2019-12-27 18:18:04 +08:00
cts.c crypto: run initcalls for generic implementations earlier 2019-04-18 22:15:03 +08:00
curve25519-generic.c crypto: curve25519 - implement generic KPP driver 2019-11-17 09:02:43 +08:00
deflate.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
des_generic.c crypto: des - remove now unused __des3_ede_setkey() 2019-08-22 14:57:33 +10:00
dh_helper.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
dh.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
drbg.c crypto: drbg - add FIPS 140-2 CTRNG for noise source 2019-05-23 14:01:06 +08:00
ecb.c crypto: skcipher - Add skcipher_ialg_simple helper 2019-12-27 18:18:04 +08:00
ecc_curve_defs.h crypto: ecc - make ecc into separate module 2019-04-18 22:15:02 +08:00
ecc.c int128: move __uint128_t compiler test to Kconfig 2019-11-17 09:02:42 +08:00
ecc.h crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm 2019-04-18 22:15:02 +08:00
ecdh_helper.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ecdh.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
echainiv.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ecrdsa_defs.h crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm 2019-04-18 22:15:02 +08:00
ecrdsa_params.asn1 crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm 2019-04-18 22:15:02 +08:00
ecrdsa_pub_key.asn1 crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm 2019-04-18 22:15:02 +08:00
ecrdsa.c crypto: ecrdsa - add EC-RDSA (GOST 34.10) algorithm 2019-04-18 22:15:02 +08:00
essiv.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
fcrypt.c crypto: make all generic algorithms set cra_driver_name 2019-06-13 14:31:39 +08:00
fips.c crypto: fips - add FIPS test failure notification chain 2019-07-26 14:51:57 +10:00
gcm.c crypto: gcm - restrict assoclen for rfc4543 2019-08-09 15:11:58 +10:00
geniv.c crypto: aead - Split out geniv into its own module 2019-11-17 09:02:38 +08:00
gf128mul.c crypto: gf128mul - remove incorrect comment 2017-12-22 19:52:40 +11:00
ghash-generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
hash_info.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hmac.c crypto: hmac - Use init_tfm/exit_tfm interface 2019-12-11 16:48:39 +08:00
internal.h crypto: api - Fix race condition in crypto_spawn_alg 2019-12-11 16:48:38 +08:00
jitterentropy-kcapi.c crypto: jitter - add header to fix buildwarnings 2019-10-18 18:49:40 +11:00
jitterentropy.c crypto: jitter - add header to fix buildwarnings 2019-10-18 18:49:40 +11:00
jitterentropy.h crypto: jitter - add header to fix buildwarnings 2019-10-18 18:49:40 +11:00
Kconfig crypto: mips/chacha - select CRYPTO_SKCIPHER, not CRYPTO_BLKCIPHER 2019-11-22 18:48:38 +08:00
keywrap.c crypto: skcipher - Add skcipher_ialg_simple helper 2019-12-27 18:18:04 +08:00
khazad.c crypto: make all generic algorithms set cra_driver_name 2019-06-13 14:31:39 +08:00
kpp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
lrw.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
lz4.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
lz4hc.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
lzo-rle.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
lzo.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
Makefile crypto: ablkcipher - remove deprecated and unused ablkcipher support 2019-11-17 09:02:49 +08:00
md4.c crypto: make all generic algorithms set cra_driver_name 2019-06-13 14:31:39 +08:00
md5.c crypto: make all generic algorithms set cra_driver_name 2019-06-13 14:31:39 +08:00
memneq.c
michael_mic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
nhpoly1305.c crypto: poly1305 - move core routines into a separate library 2019-11-17 09:02:41 +08:00
ofb.c crypto: skcipher - Add skcipher_ialg_simple helper 2019-12-27 18:18:04 +08:00
pcbc.c crypto: skcipher - Add skcipher_ialg_simple helper 2019-12-27 18:18:04 +08:00
pcrypt.c padata: remove cpumask change notifier 2019-12-11 16:37:02 +08:00
poly1305_generic.c crypto: x86/poly1305 - depend on generic library not generic shash 2019-11-17 09:02:41 +08:00
proc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ripemd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rmd128.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
rmd160.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
rmd256.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
rmd320.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
rng.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rsa_helper.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rsa-pkcs1pad.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rsa.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
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: run initcalls for generic implementations earlier 2019-04-18 22:15:03 +08:00
scatterwalk.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
scompress.c crypto: algapi - make unregistration functions return void 2019-12-20 14:58:35 +08:00
seed.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
seqiv.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
serpent_generic.c crypto: x86 - Regularize glue function prototypes 2019-12-11 16:36:54 +08:00
sha1_generic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sha3_generic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
sha256_generic.c crypto: sha256 - Merge crypto/sha256.h into crypto/sha.h 2019-09-05 14:54:54 +10:00
sha512_generic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 45 2019-05-24 17:27:12 +02:00
shash.c crypto: algapi - make unregistration functions return void 2019-12-20 14:58:35 +08:00
simd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
skcipher.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
sm3_generic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234 2019-06-19 17:09:07 +02:00
sm4_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
streebog_generic.c crypto: streebog - remove two unused variables 2019-08-15 21:52:14 +10:00
tcrypt.c crypto: tcrypt - constify check alg list 2019-11-17 09:02:44 +08:00
tcrypt.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
tea.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00
testmgr.c crypto: testmgr - generate inauthentic AEAD test vectors 2019-12-11 16:37:01 +08:00
testmgr.h crypto: testmgr - generate inauthentic AEAD test vectors 2019-12-11 16:37:01 +08:00
tgr192.c crypto: tgr192 - remove unneeded semicolon 2019-11-15 13:44:17 +08:00
twofish_common.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
twofish_generic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
vmac.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
wp512.c crypto: make all generic algorithms set cra_driver_name 2019-06-13 14:31:39 +08:00
xcbc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
xor.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
xts.c crypto: xts - add support for ciphertext stealing 2019-08-15 21:52:14 +10:00
xxhash_generic.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
zstd.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2019-07-08 20:57:08 -07:00