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Author SHA1 Message Date
Kevin Bracey 1d53ce33c4 Avoid bitfields 
Bitfields in context structures do not have sufficient (if any) RAM
payoff for the ROM complexity to manipulate them. Replace with
plain uint8_t.

On the smallest targets, the configuration options mean that there
are 4 or fewer members anyway, so a bitfield saves no RAM compared
to uint8_t.

ROM saving will be further increased if the uint8_t members are at the
start of the structure (when compiling for Thumb).

Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-11-04 15:16:22 +02:00
Kevin Bracey 585e9e0922 Add MBEDTLS_SSL_CONF_TRANSPORT 
Follow the model of `MBEDTLS_SSL_CONF_ENDPOINT`. This saves a small
amount - most of the saving was already acheived via`
MBEDTLS_SSL_TRANSPORT_IS_TLS` but we can scrape out a little more by
totally eliminating `ssl->conf->transport` references.

Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-11-04 15:16:22 +02:00
Kevin Bracey d859db833c Fix MBEDTLS_SSL_CONF_ENDPOINT flagging 
Compilation failed if MBEDTLS_SSL_CONF_ENDPOINT was set - add necessary
conditions.

Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-11-04 15:16:09 +02:00
Andrzej Kurek 8b0910a791
Merge pull request #3815 from AndrzejKurek/cipher-optim-mem-fix 
ssl_tls.c: Fix unchecked memory allocation
 2020-11-02 11:41:24 +01:00
Shelly Liberman 938d4d3fa3
Merge pull request #3820 from shelib01/regularize_k_restore 
Restore tinycrypt implementation of regularize_k()
 2020-10-27 12:57:00 +02:00
Shelly Liberman 8176022b22 Restore tinycrypt implementation of regularize_k() 
The fix is required to prevent array overrun

Signed-off-by: Shelly Liberman <shelly.liberman@arm.com>
 2020-10-26 17:35:49 +02:00
Andrzej Kurek 8472bc76c6
Merge pull request #3806 from AndrzejKurek/baremetal-refactor-variable-buffers 
Refactor the buffer resize feature to reduce codesize
 2020-10-23 11:21:44 +02:00
Andrzej Kurek 28b3b29306
ssl_tls.c: Fix unchecked memory allocation 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-10-22 11:40:41 +02:00
Andrzej Kurek 2e49d079d6
Describe the behaviour of buffer resizing on an out-of-memory error 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-10-22 11:16:25 +02:00
Andrzej Kurek cd9a6ff3c1
Introduce additional flags for buffer upsizing and downsizing 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-10-22 11:12:07 +02:00
Andrzej Kurek 79db2f14da
Refactor the buffer resize feature to reduce codesize 
Extract a common part of the code to a function.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-10-20 17:11:54 +02:00
Andrzej Kurek 21afee2304
Merge pull request #3800 from AndrzejKurek/variable-buffers-baremetal 
Sideport the variable IO buffer size feature to baremetal
 2020-10-19 10:29:27 +02:00
Andrzej Kurek f384495972
Sideport the variable IO buffer size feature to baremetal 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-10-17 00:55:17 +02:00
Andrzej Kurek dd5ad6924e
Merge pull request #3785 from AndrzejKurek/m_tinycrypt_asm 
TinyCrypt ARM assembler and other optimisations
 2020-10-15 13:27:39 +02:00
Andrzej Kurek d66d13eaa9
Add a no-strict build to armcc baremetal tests in all.sh 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-10-15 09:54:49 +02:00
Andrzej Kurek b04208151b
tinycrypt: make asm optimizations optional for baremetal 
Disable asm optimizations for strict armcc baremetal builds.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-10-14 19:42:23 +02:00
Andrzej Kurek db0e50ea70
Introduce MBEDTLS_OPTIMIZE_TINYCRYPT_ASM 
Make the ASM optimizations in tinycrypt optional.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-10-14 14:32:50 +02:00
Andrzej Kurek 7e62c31097
Guard the tinycrypt code with MBEDTLS_USE_TINYCRYPT 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-10-14 12:02:40 +02:00
Kevin Bracey 8b2014bdb6 Add .syntax divided markers 
Old GCC (pre-5?) natively use divided syntax, so we must put it back
after changing it.

More recent GCCs natively use unified syntax, and themselves are
surrounding our blocks with divided/unified directives for backwards
compatibility, so we don't need to restore for those.

Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-13 10:24:39 +03:00
Kevin Bracey 045e576e02 Adjust fixed-time arithmetic to not use boolean ops 
Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-12 18:09:04 +03:00
Kevin Bracey 99c64e142e Use builtin CLZ 
Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-12 18:09:04 +03:00
Kevin Bracey 3be252e252 vli_isZero and vli_clear assembly 
Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-12 18:09:04 +03:00
Kevin Bracey 4aea62569b More GCC assembly 
Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-12 18:09:04 +03:00
Kevin Bracey 06060330d8 Add GCC vli_rshift1 assembly 
Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-12 18:09:04 +03:00
Kevin Bracey 0a1884bba4 Use GCC extended assembler 
Naked functions and basic assembler don't seem to work reliably - basic
assembler is assumed to not change registers or memory, and there does
not appear to be any special handling of naked functions in this regard.

Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-12 18:09:04 +03:00
Kevin Bracey e0f88d5140 Add GCC/Clang muladd assembly 
Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-12 18:09:04 +03:00
Kevin Bracey 84f31d3eaa Optimise muladd more 
Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-12 18:09:04 +03:00
Kevin Bracey 1959c18c69 tinycrypt: Add ARM assembler optimisations 
For ARM Compiler 5 only, provide assembler versions of vli_add, vli_sub,
vli_rshift1 and muladd.

Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-12 18:09:04 +03:00
Andrzej Kurek ce62080a99
Merge pull request #3613 from AndrzejKurek/fi-double-crypto-calls 
Add double pk verification and double master secret calculation
 2020-10-07 16:03:23 +01:00
Kevin Bracey f40c79272f tinycrypt: use fast integer types 
Signed-off-by: Kevin Bracey <kevin.bracey@arm.com>
 2020-10-07 14:13:41 +03:00
Andrzej Kurek 2544cd3582
Merge pull request #3724 from AndrzejKurek/transform-cipher-optimization-2 
Add hash calculation to the ssl module
 2020-10-06 14:20:10 +01:00
Andrzej Kurek 73680ad5a2
Merge pull request #3694 from AndrzejKurek/transform-cipher-optimization 
Merge enc/dec cipher contexts in ssl transforms
 2020-09-23 14:06:43 +01:00
Andrzej Kurek f4d2c7de31
Improve FI resistance of pk verification in ssl_cli.c 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-20 02:15:16 +02:00
Andrzej Kurek f74a86c0b0
Improve FI resistance of certificate verification in ssl_srv.c 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-20 01:57:30 +02:00
Andrzej Kurek ef34494d80
ssl_srv.c: change the initial return variable value 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-20 00:29:43 +02:00
Andrzej Kurek ff51721e99
ssl_tls: reduce the complexity of encryption validation 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-20 00:29:43 +02:00
Andrzej Kurek 8ec9e136cf
ssl_tls: Add a flag indicating that encryption succeeded 
Protect against encryption skipping by introducing a new flag.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-20 00:29:43 +02:00
Andrzej Kurek 6c30be8e4b
ssl: call signature verification twice for non-restartable operations 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-20 00:29:43 +02:00
Andrzej Kurek 69bafce7a3
Improve the FI resistance in ssl_tls.c key switching 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-19 12:45:20 +02:00
Andrzej Kurek f7df0d37ab
Reduce the size of used constant in ssl_tls.c 
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-19 12:00:57 +02:00
Andrzej Kurek a793237998
Calculate hashes of ssl encryption and decryption keys 
Optimize the key switching mechanism to set the key only if 
a different operation is performed with the context.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-19 08:04:05 +02:00
Andrzej Kurek d81351b047
Change the default value of initialized cipher operation to NONE 
This way, an initialized cipher context but without a key set can be identified.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-19 04:07:03 +02:00
Andrzej Kurek 1175044156
Merge enc/dec cipher contexts in ssl transforms 
Store the raw encryption and decryption keys in transforms
to set them before each cipher operation. Add a config option
for this - MBEDTLS_SSL_TRANSFORM_OPTIMIZE_CIPHERS.
Signed-off-by: Andrzej Kurek <andrzej.kurek@arm.com>
 2020-09-17 23:51:58 +02:00
Shelly Liberman f8d7e0112a
Merge pull request #3669 from shelib01/ec_key_gen_optimization 
replace user rand by platform rand in ecc delays
 2020-09-16 20:32:52 +03:00
Shelly Liberman 05beb9ac70 replace user rand by platform rand in ecc delays 
Signed-off-by: Shelly Liberman <shelly.liberman@arm.com>
 2020-09-16 18:58:50 +03:00
Andrzej Kurek 6f3a987ae3
Merge pull request #3640 from AndrzejKurek/fi-hash-instead-of-crc 
Swap out CRC calculation in AES in favour of a simple hash
 2020-09-03 15:21:47 +02:00
Andrzej Kurek a00c3eeaca
Merge pull request #3619 from AndrzejKurek/fi-uecc-return-value 
Change the tinycrypt return values to be below 256
 2020-08-31 14:53:39 +02:00
Andrzej Kurek 858e4325d2
Merge pull request #3604 from AndrzejKurek/alias-memcmp-memequal 
Add a deprecated version of mbedtls_platform_memcmp.
 2020-08-24 15:26:23 +02:00
Andrzej Kurek c87e91ce2b
Merge pull request #3553 from AndrzejKurek/crc-calculation-base 
Validate AES keys after each use checking CRC
 2020-08-13 12:42:54 +02:00
Piotr Nowicki c2b682ab71
Merge pull request #3468 from piotr-now/fic_flow_monitor 
Add flow monitor for memory block operations
 2020-08-13 09:34:00 +02:00