Piotr Nowicki
8656fc6525
Change the value type in the mbedtls_platform_random_in_range()
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Signed-off-by: Piotr Nowicki <piotr.nowicki@arm.com>
2020-08-11 16:38:25 +02:00
Piotr Nowicki
fa635dfaa1
Merge pull request #3448 from piotr-now/platform_util
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Renamed mbedtls_platform_memcmp() to mbedtls_platform_memequal()
2020-08-11 14:30:35 +02:00
Andrzej Kurek
9539f831b2
Swap out CRC calculation in AES in favour of a simple hash
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XOR the key bytes upon setting and re-check hash during each use.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-08-10 20:46:48 -04:00
Andrzej Kurek
8fba6e99ce
Merge pull request #3532 from AndrzejKurek/fi-hmac-drbg-fixes
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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
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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()
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Signed-off-by: Piotr Nowicki <piotr.nowicki@arm.com>
2020-08-10 12:41:00 +02:00
Andrzej Kurek
e6d8db0f41
Change the tinycrypt return values to be below 256
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Thanks to this change the produced ASM does not need an additional instruction
to place the constant value in a register, but can compare it directly.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-08-10 02:54:56 -04:00
Andrzej Kurek
8bb0839555
Add a deprecated version of mbedtls_platform_memcmp.
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Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-08-09 02:18:12 -04:00
Andrzej Kurek
e4f865d53c
Makefile: alphabetically order object files
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Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-08-08 19:08:26 -04:00
Andrzej Kurek
fba5921186
aes: validate keys using crc before encryption/decryption
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CRC is calculated when the key is set. This commit also adds new tests
for ecb encryption and decryption, simulating a fault injection after the key is set.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-08-08 19:06:44 -04:00
Andrzej Kurek
9df2b416b9
Add a CRC module to mbedtls and baremetal config
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Add a new CRC module along with some tests for it.
The table and the CRC function body is generated using pycrc v0.9.2.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-08-08 02:10:52 -04:00
Shelly Liberman
c6319a70ab
Merge pull request #3514 from shelib01/fi_write_user_data
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Fi write user data
2020-08-06 07:41:15 +03:00
Shelly Liberman
3799fc1578
Splitting buffers comment added
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Signed-off-by: Shelly Liberman <shelly.liberman@arm.com>
2020-08-05 17:53:31 +03:00
Shelly Liberman
c6a7e6b0c4
Enhancement fixes
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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.
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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.
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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
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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
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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
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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
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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
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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
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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
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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
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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
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Duplicate sensitive buffer and buffer length information
2020-07-15 11:56:36 +02:00
Andrzej Kurek
45e719983f
Minor formatting and cosmetic changes
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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
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Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
2020-07-08 09:25:49 -04:00
Andrzej Kurek
0919b142b6
Formatting changes
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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
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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
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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
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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
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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
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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
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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
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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
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Hamming distance improvements
2020-06-22 08:28:55 +01:00