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Gilles Peskine d10e8fae9e Optimize fix_negative 
Reduce the code size, stack consumption and heap consumption in
fix_negative by encoding the special-case subtraction manually.

* Code size: ecp_curves.o goes down from 7837B down to 7769 in a
  sample Cortex-M0 build with all curves enabled. The savings come
  from not having to set up C in INIT (which is used many times) and
  from not having to catch errors in fix_negative.
* Stack consumption: get rid of C on the stack.
* Heap: mbedtls_mpi_sub_abs with destination == second operand would
  make a heap allocation. The new code doesn't do any heap allocation.
* Performance: no measurable difference.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-12-07 22:51:25 +01:00
..
.gitignore
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aes.c
Merge pull request #3823 from gabor-mezei-arm/3818_MBEDTLS_AES_SETKEY_DEC_ALT_excludes_MBEDTLS_CIPHER_MODE_XTS
2020-11-09 20:44:08 +01:00
aesni.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
arc4.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
aria.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
asn1parse.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
asn1write.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
base64.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
bignum.c
Fix memory leak in mbedtls_mpi_sub_abs
2020-12-06 22:32:02 +01:00
blowfish.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
camellia.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
ccm.c
Fix additional data length field check for CCM
2020-10-08 12:09:44 +02:00
certs.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
chacha20.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
chachapoly.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
check_crypto_config.h
Minor updates to address review comments
2020-11-30 21:06:05 -08:00
cipher_wrap.c
Do not set IV size for ECB mode ciphers
2020-11-06 09:40:21 +01:00
cipher.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
cmac.c
Fix mismatched function parameters (prototype/definition)
2020-11-25 01:13:12 -03:00
CMakeLists.txt
Build: Use new-style syntax in link-libraries
2020-10-20 13:44:44 +01:00
common.h
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
ctr_drbg.c
Support set *_drbg reseed interval before seed
2020-11-25 14:25:56 -08:00
debug.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
des.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
dhm.c
Merge development into development-restricted
2020-08-20 11:07:12 +01:00
ecdh.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
ecdsa.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
ecjpake.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
ecp_curves.c
Optimize fix_negative
2020-12-07 22:51:25 +01:00
ecp.c
List Montgomery curves in mbedtls_ecp_curve_list()
2020-09-30 17:02:25 +02:00
entropy_poll.c
Fix the build when _GNU_SOURCE is defined to a non-empty value
2020-10-01 11:27:17 +02:00
entropy.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
error.c
Simplify conditional guards in error.c
2020-11-16 15:02:16 +01:00
gcm.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
havege.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
hkdf.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
hmac_drbg.c
Support set *_drbg reseed interval before seed
2020-11-25 14:25:56 -08:00
Makefile
Merge pull request #3568 from hanno-arm/tls13_experimental_key_schedule_1
2020-09-16 11:40:06 +01:00
md2.c
Use single-line string literals.
2020-08-21 21:08:56 +02:00
md4.c
Use single-line string literals.
2020-08-21 21:08:56 +02:00
md5.c
Use single-line string literals.
2020-08-21 21:08:56 +02:00
md.c
Merge pull request #3578 from gilles-peskine-arm/md_setup-leak-development
2020-08-21 09:19:12 +02:00
memory_buffer_alloc.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
net_sockets.c
Use socklen_t on Android and other POSIX-compliant system
2020-09-30 16:53:37 +08:00
nist_kw.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
oid.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
padlock.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
pem.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
pk_wrap.c
psa: Move from key handle to key identifier
2020-11-10 16:00:41 +01:00
pk.c
psa: Move from key handle to key identifier
2020-11-10 16:00:41 +01:00
pkcs5.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
pkcs11.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
pkcs12.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
pkparse.c
fix return code
2020-09-22 11:57:16 +02:00
pkwrite.c
psa: Move from key handle to key identifier
2020-11-10 16:00:41 +01:00
platform_util.c
Fixes two _POSIX_C_SOURCE typos.
2020-11-13 09:20:18 +00:00
platform.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
poly1305.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
psa_crypto_core.h
Improve/fix documentation
2020-11-20 13:57:15 +01:00
psa_crypto_driver_wrappers.c
Plug in the entry point for public key export through driver
2020-11-20 17:31:24 +01:00
psa_crypto_driver_wrappers.h
Plug in the entry point for public key export through driver
2020-11-20 17:31:24 +01:00
psa_crypto_invasive.h
psa: Fix references to macros in comments
2020-11-10 16:18:07 +01:00
psa_crypto_its.h
psa: Fix references to macros in comments
2020-11-10 16:18:07 +01:00
psa_crypto_se.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
psa_crypto_se.h
Changes PSA key storage format to include key bits
2020-10-07 10:54:24 +02:00
psa_crypto_service_integration.h
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
psa_crypto_slot_management.c
Improve/fix documentation
2020-11-20 13:57:15 +01:00
psa_crypto_slot_management.h
Improve/fix documentation
2020-11-20 13:57:15 +01:00
psa_crypto_storage.c
psa: Fix references to macros in comments
2020-11-10 16:18:07 +01:00
psa_crypto_storage.h
psa: Fix references to macros in comments
2020-11-10 16:18:07 +01:00
psa_crypto.c
Update guards for ALG_SHA_224 and ALG_SHA_384 in crypto library
2020-12-03 06:07:04 -08:00
psa_its_file.c
psa_its: Annotate file removal after a failed creation
2020-08-25 22:49:19 +02:00
ripemd160.c
Use single-line string literals.
2020-08-21 21:08:56 +02:00
rsa_internal.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
rsa.c
Restore retry in rsa_prepare_blinding()
2020-09-25 08:43:57 -05:00
sha1.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
sha256.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
sha512.c
Use single-line string literals.
2020-08-21 21:08:56 +02:00
ssl_cache.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
ssl_ciphersuites.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
ssl_cli.c
psa: Move from key handle to key identifier
2020-11-10 16:00:41 +01:00
ssl_cookie.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
ssl_invasive.h
Merge pull request #736 from mpg/cf-varpos-copy-dev-restricted
2020-08-25 14:35:55 +01:00
ssl_msg.c
Fix: Add missing arguments to debug message.
2020-12-02 10:13:02 +01:00
ssl_srv.c
Merge pull request #3547 from ronald-cron-arm/psa-openless
2020-11-20 18:48:33 +01:00
ssl_ticket.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
ssl_tls13_keys.c
Comment on hardcoding of maximum HKDF key expansion of 255 Bytes
2020-09-16 09:50:17 +01:00
ssl_tls13_keys.h
Comment on hardcoding of maximum HKDF key expansion of 255 Bytes
2020-09-16 09:50:17 +01:00
ssl_tls.c
Change function casting in ssl_calc_finished_tls_sha384
2020-11-25 07:30:26 -03:00
threading.c
Fixes two _POSIX_C_SOURCE typos.
2020-11-13 09:20:18 +00:00
timing.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
version_features.c
Comply with mbedtls naming rules
2020-10-29 01:14:49 +01:00
version.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
x509_create.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
x509_crl.c
Merge development into development-restricted
2020-08-20 11:07:12 +01:00
x509_crt.c
Merge pull request #3433 from raoulstrackx/raoul/verify_crl_without_time
2020-08-26 12:56:11 +02:00
x509_csr.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
x509.c
x509.c: Remove one unnecessary cast
2020-09-01 11:04:53 +02:00
x509write_crt.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
x509write_csr.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00
xtea.c
Update copyright notices to use Linux Foundation guidance
2020-08-19 10:35:41 +02:00