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Author SHA1 Message Date
Piotr Nowicki
fa635dfaa1
Merge pull request #3448 from piotr-now/platform_util 
Renamed mbedtls_platform_memcmp() to mbedtls_platform_memequal()
 2020-08-11 14:30:35 +02:00
Andrzej Kurek
8fba6e99ce
Merge pull request #3532 from AndrzejKurek/fi-hmac-drbg-fixes 
Fi-related hmac_drbg fixes
 2020-08-10 19:02:25 +02:00
Andrzej Kurek
0305753d7a
Merge pull request #3477 from AndrzejKurek/aes-fake-key 
Use a fake random key in AES calculations
 2020-08-10 13:05:46 +02:00
Piotr Nowicki
e3c4ee51b2 Rename mbedtls_platform_memcmp() to mbedtls_platform_memequal() 
Signed-off-by: Piotr Nowicki <piotr.nowicki@arm.com>
 2020-08-10 12:41:00 +02:00
Shelly Liberman
c6319a70ab
Merge pull request #3514 from shelib01/fi_write_user_data 
Fi write user data
 2020-08-06 07:41:15 +03:00
Shelly Liberman
3799fc1578 Splitting buffers comment added 
Signed-off-by: Shelly Liberman <shelly.liberman@arm.com>
 2020-08-05 17:53:31 +03:00
Shelly Liberman
c6a7e6b0c4 Enhancement fixes 
Co-authored-by: Andrzej Kurek <andrzej.kurek@arm.com>
Signed-off-by: Shelly Liberman <shelly.liberman@arm.com>
 2020-08-05 15:40:15 +03:00
shelib01
4062d6ca68 Add user pointer and data size duplication to ssl context. 
Signed-off-by: Shelly Liberman <shelly.liberman@arm.com>
 2020-08-05 15:01:05 +03:00
Andrzej Kurek
e9cb642748
Merge pull request #3516 from AndrzejKurek/fi-pkparse-changes 
FI-related pkparse.c fixes
 2020-08-03 12:14:22 +02:00
Andrzej Kurek
7400fae7ee
Merge pull request #3510 from AndrzejKurek/fi-pk-fixes 
pk.c FI-related fixes
 2020-08-03 12:14:06 +02:00
Andrzej Kurek
898d330148
Merge pull request #3500 from AndrzejKurek/fi-sha256-fixes 
Introduce sha256 security review fixes
 2020-08-03 12:13:40 +02:00
Andrzej Kurek
84afe68ad4
Merge pull request #3509 from AndrzejKurek/fi-x509-changes 
x509.c: Remove one unnecessary cast
 2020-08-03 12:11:47 +02:00
Andrzej Kurek
4b700a3db3
Merge pull request #3456 from AndrzejKurek/aes-fi-improvements 
Minor AES module improvements
 2020-07-30 16:29:48 +02:00
Andrzej Kurek
7e6075b7fd
Merge pull request #3499 from AndrzejKurek/fi-duplicate-buffers-revert 
Revert a part of the sensitive information duplication changes
 2020-07-21 11:03:50 +02:00
Andrzej Kurek
4353b698ed
hmac_drbg: make no reseeding behaviour explicit 
Add a flag to the hmac_drbg context that will signal that reseeding is not required.
Change tests and one ecdsa call to not use reseeding, as was the previous case.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-19 09:00:18 -04:00
Andrzej Kurek
fac2f9b4ce
aes: move the fake key operations to AES_SCA_COUNTERMEASURES define 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-19 05:01:44 -04:00
Andrzej Kurek
f6265441b0
hmac_drbg: fix default value of the prediction resistance in ctx 
After changing the possible prediction resistance values to have more
hamming distance between them, 0 (default initialization value) no
longer meant no prediction resistance.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-18 07:09:04 -04:00
Andrzej Kurek
6bc37fa4e2
hmac_drbg: set_entropy_len can now return an error 
Make mbedtls_hmac_drbg_set_entropy_len return an error
in case of a too long entropy length setting.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-18 06:05:03 -04:00
Andrzej Kurek
9167aa96f8
hmac_drbg: change two variables to be volatile 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-18 06:02:59 -04:00
Andrzej Kurek
e78775eed2
Use a fake random key in AES calculations 
Create an additional field in the AES context to store a randomized fake key.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-18 05:21:32 -04:00
Andrzej Kurek
8917326d7b
Introduce sha256 security review fixes 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-18 00:42:39 -04:00
Andrzej Kurek
3403969645
Add a comment regarding remaining space check 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-17 05:49:47 -04:00
Andrzej Kurek
a9a5ff5f31
aes: add a comment about expected keybits value. 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-17 03:28:32 -04:00
Andrzej Kurek
11ddf25828
Add minor FI countermeasures improvements 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-17 03:28:32 -04:00
Andrzej Kurek
189ee74a82
Add a platform function to return a random uint32_t 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-17 03:28:32 -04:00
Andrzej Kurek
3ed65d2b84
Add a return from pk_get_ueccpubkey if uecc_public_key_read_binary fails 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-17 02:17:38 -04:00
Andrzej Kurek
c3b69edd2f
Increase hamming distance by changing UECC_SUCCESS from 0 to FFAAAA 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-16 11:33:34 -04:00
Andrzej Kurek
a798e5d5cc
Introduce additional buffer size checks to pk.c 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-16 11:32:53 -04:00
Andrzej Kurek
ddc2db4c13
x509.c: Remove one unnecessary cast 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-16 04:41:48 -04:00
Andrzej Kurek
cf3e35cc58
Revert a part of sensitive information duplication from tinycrypt 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-15 22:32:30 -04:00
Andrzej Kurek
afec8853c5
Revert a part of the sensitive information duplication changes 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-15 16:31:27 -04:00
Andrzej Kurek
c417c783e5
Merge pull request #3481 from AndrzejKurek/fi_duplicate_buffers_2 
Duplicate sensitive buffer and buffer length information
 2020-07-15 11:56:36 +02:00
Andrzej Kurek
45e719983f
Minor formatting and cosmetic changes 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-08 10:09:44 -04:00
Andrzej Kurek
ca60937cf9
Add buffer and context clearing upon suspected FI 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-08 09:25:49 -04:00
Andrzej Kurek
0919b142b6
Formatting changes 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-06 15:28:59 -04:00
Andrzej Kurek
84bde419e1
Add FI countermeasures to the ssl module 
This commit adds mainly buffer pointer and length duplication and checks,
but also some hamming distance and return values checking improvements.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-06 15:27:34 -04:00
Andrzej Kurek
74f7d0f03d
Duplicate sensitive buffer and buffer length information 
Detect FI attacks on buffer pointers and buffer lengths.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-07-06 14:28:12 -04:00
Shelly Liberman
a24c8414cf
Merge pull request #3439 from piotr-now/fic_switch 
Add FI countermeasures for sensitive switch instructions
 2020-07-05 10:55:13 +03:00
Andrzej Kurek
1206cf1ff4
Merge pull request #3467 from AndrzejKurek/cipher-wrap-aes-128-optimize 
Wrap AES 192 and 256 info structures in an !AES_ONLY_128_BIT_KEY_LENGTH define
 2020-07-01 10:36:58 +01:00
Piotr Nowicki
78fc139121 Add FI countermeasures for sensitive switch instructions 
Signed-off-by: Piotr Nowicki <piotr.nowicki@arm.com>
 2020-06-30 14:11:52 +02:00
Andrzej Kurek
77647bd03b
Wrap AES 192 and 256 info structures in !AES_ONLY_128_BIT_KEY_LENGTH 
This reduces the code size by not compiling in unnecessary info structures
when using only 128 bit AES.
Co-authored by: AnttiKauppila <antti.kauppila@arm.com>
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-06-30 05:03:19 -04:00
Andrzej Kurek
98c847a483
Merge pull request #3395 from AndrzejKurek/sha-flow_ctrl 
Add flow control to sha256
 2020-06-22 11:30:53 +01:00
Andrzej Kurek
e5425a0944
Merge pull request #3408 from AndrzejKurek/hamming-distance-improvements 
Hamming distance improvements
 2020-06-22 08:28:55 +01:00
Andrzej Kurek
3a0df03364
Increase the Hamming distance of uECC_generate_random_int returns 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-06-12 06:32:13 -04:00
Piotr Nowicki
f523c47578
Merge pull request #3403 from piotr-now/sca_memmove 
Add mbedtls_platform_memmove() as a secured memcmp()
 2020-06-10 14:52:02 +02:00
Piotr Nowicki
ce0aab4474 Add new error code PLATFORM_ALLOC_FAILED for mbedtls_platform_memmove() 
Signed-off-by: Piotr Nowicki <piotr.nowicki@arm.com>
 2020-06-10 13:51:32 +02:00
Andrzej Kurek
78f77eb4e6
Add flow control to sha256 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-06-10 05:12:34 -04:00
Piotr Nowicki
c520b90507
Merge pull request #3390 from piotr-now/rndelay_comment 
Add comment for mbedtls_platform_random_delay() and returning an FAULT_DETECTED error on potential FI attack detection
 2020-06-10 09:13:10 +02:00
Piotr Nowicki
5d5841f450 Add mbedtls_platform_memmove() as a secured memcmp() 
Signed-off-by: Piotr Nowicki <piotr.nowicki@arm.com>
 2020-06-09 14:31:55 +02:00
Piotr Nowicki
e048b91d25 Add returning a FAULT_DETECTED error on suspected FI attacks 
The change applies to the places where we prevent double synchronous
FI attacks with random delay, and where we do not respond to their
detection. The response to such an attack should be to return the
appropriate error code.

Signed-off-by: Piotr Nowicki <piotr.nowicki@arm.com>
 2020-06-09 12:00:42 +02:00