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linux/include/crypto
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Stephan Mueller 5102981212 crypto: drbg - prevent invalid SG mappings 
When using SGs, only heap memory (memory that is valid as per
virt_addr_valid) is allowed to be referenced. The CTR DRBG used to
reference the caller-provided memory directly in an SG. In case the
caller provided stack memory pointers, the SG mapping is not considered
to be valid. In some cases, this would even cause a paging fault.

The change adds a new scratch buffer that is used unconditionally to
catch the cases where the caller-provided buffer is not suitable for
use in an SG. The crypto operation of the CTR DRBG produces its output
with that scratch buffer and finally copies the content of the
scratch buffer to the caller's buffer.

The scratch buffer is allocated during allocation time of the CTR DRBG
as its access is protected with the DRBG mutex.

Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-11-30 19:46:44 +08:00
..
internal crypto: skcipher - Remove top-level givcipher interface 2016-07-18 17:35:46 +08:00
ablk_helper.h crypto: create generic version of ablk_helper 2013-09-24 06:02:24 +10:00
aead.h crypto: aead - Add chunk size 2016-07-18 17:35:38 +08:00
aes.h crypto: aes - Move key_length in struct crypto_aes_ctx to be the last field 2009-02-18 16:48:04 +08:00
akcipher.h crypto: doc - add akcipher API 2016-02-17 04:07:53 +08:00
algapi.h crypto: engine - move crypto engine to its own header 2016-09-07 21:08:26 +08:00
authenc.h crypto: authenc - Export key parsing helper function 2013-10-16 20:56:25 +08:00
b128ops.h
blowfish.h crypto: blowfish - split generic and common c code 2011-09-22 21:25:25 +10:00
cast5.h crypto: cast5/cast6 - move lookup tables to shared module 2012-12-06 17:16:26 +08:00
cast6.h crypto: cast5/cast6 - move lookup tables to shared module 2012-12-06 17:16:26 +08:00
cast_common.h crypto: cast5/cast6 - move lookup tables to shared module 2012-12-06 17:16:26 +08:00
chacha20.h random: replace non-blocking pool with a Chacha20-based CRNG 2016-07-03 00:57:23 -04:00
cryptd.h crypto: cryptd - Add helpers to check whether a tfm is queued 2016-06-23 18:29:52 +08:00
crypto_wq.h crypto: api - Use dedicated workqueue for crypto subsystem 2009-02-19 14:33:40 +08:00
ctr.h [CRYPTO] ctr: Refactor into ctr and rfc3686 2008-01-11 08:16:41 +11:00
des.h crypto: des_3des - add x86-64 assembly implementation 2014-06-20 21:27:58 +08:00
dh.h crypto: dh - Add DH software implementation 2016-06-23 18:29:56 +08:00
drbg.h crypto: drbg - prevent invalid SG mappings 2016-11-30 19:46:44 +08:00
ecdh.h crypto: ecdh - Add ECDH software support 2016-06-23 18:29:57 +08:00
engine.h crypto: engine - permit to enqueue ashash_request 2016-09-07 21:08:27 +08:00
gf128mul.h Update broken web addresses in the kernel. 2010-10-18 11:03:14 +02:00
ghash.h crypto: ghash-generic - move common definitions to a new header file 2016-10-02 22:26:40 +08:00
hash_info.h keys, trusted: select hash algorithm for TPM2 chips 2015-12-20 15:27:12 +02:00
hash.h crypto: doc - document correct return value for request allocation 2016-04-15 22:35:44 +08:00
if_alg.h crypto: af_alg - Allow af_af_alg_release_parent to be called on nokey path 2016-01-18 18:16:32 +08:00
kpp.h crypto: ecdh - Add ECDH software support 2016-06-23 18:29:57 +08:00
lrw.h crypto: lrw - add interface for parallelized cipher implementions 2011-11-09 11:50:31 +08:00
mcryptd.h crypto: sha1-mb - async implementation for sha1-mb 2016-06-23 18:29:55 +08:00
md5.h crypto: hash - add zero length message hash for shax and md5 2015-12-22 20:43:35 +08:00
null.h crypto: null - Remove default null blkcipher 2016-07-18 17:35:44 +08:00
padlock.h crypto: padlock - Move padlock.h into include/crypto 2011-01-07 14:52:00 +11:00
pcrypt.h crypto: pcrypt - Add pcrypt crypto parallelization wrapper 2010-01-07 15:57:19 +11:00
pkcs7.h PKCS#7: Make trust determination dependent on contents of trust keyring 2016-04-06 16:14:24 +01:00
poly1305.h crypto: poly1305 - Export common Poly1305 helpers 2015-07-17 21:20:26 +08:00
public_key.h KEYS: Move the point of trust determination to __key_link() 2016-04-11 22:43:43 +01:00
rng.h crypto: doc - Fix typo in crypto-API.xml 2015-06-04 15:05:08 +08:00
scatterwalk.h crypto: scatterwalk - Inline start/map/done 2016-07-18 17:35:50 +08:00
serpent.h crypto: serpent-sse2 - add lrw support 2011-11-21 16:13:24 +08:00
sha1_base.h crypto: sha1 - implement base layer for SHA-1 2015-04-10 21:39:39 +08:00
sha3.h crypto: sha3 - Add SHA-3 hash algorithm 2016-06-20 19:25:01 +08:00
sha256_base.h crypto: sha256 - implement base layer for SHA-256 2015-04-10 21:39:39 +08:00
sha512_base.h crypto: sha512 - implement base layer for SHA-512 2015-04-10 21:39:39 +08:00
sha.h crypto: hash - add zero length message hash for shax and md5 2015-12-22 20:43:35 +08:00
skcipher.h crypto: skcipher - Add comment for skcipher_alg->base 2016-07-19 15:42:42 +08:00
twofish.h crypto: twofish-x86_64-3way - add lrw support 2011-11-09 11:53:32 +08:00
vmac.h crypto: vmac - Make VMAC work when blocks aren't aligned 2012-10-15 22:33:20 +08:00
xts.h crypto: xts - consolidate sanity check for keys 2016-02-17 04:07:51 +08:00