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mbedtls/library
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Gilles Peskine c097e9ea45 Move carry propagation out of mpi_sub_hlp 
The function mpi_sub_hlp had confusing semantics: although it took a
size parameter, it accessed the limb array d beyond this size, to
propagate the carry. This made the function difficult to understand
and analyze, with a potential buffer overflow if misused (not enough
room to propagate the carry).

Change the function so that it only performs the subtraction within
the specified number of limbs, and returns the carry.

Move the carry propagation out of mpi_sub_hlp and into its caller
mbedtls_mpi_sub_abs. This makes the code of subtraction very slightly
less neat, but not significantly different.

In the one other place where mpi_sub_hlp is used, namely mpi_montmul,
this is a net win because the carry is potentially sensitive data and
the function carefully arranges to not have to propagate it.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2020-06-08 22:08:21 +02:00
..
.gitignore
Split libs with make + general make cleanups
2015-06-25 10:59:56 +02:00
aes.c
Fix GCC format-signedness warnings
2020-04-22 16:01:48 +02:00
aesni.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
arc4.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
aria.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
asn1parse.c
Replace use of uint8_t by unsigned char in ASN.1 seq traversal API
2020-02-03 10:39:55 +00:00
asn1write.c
Merge pull request #323 from yanesca/iotcrypt-942-initialise-return-values
2019-12-19 10:24:22 +00:00
base64.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
bignum.c
Move carry propagation out of mpi_sub_hlp
2020-06-08 22:08:21 +02:00
blowfish.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
camellia.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
ccm.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
certs.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
chacha20.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
chachapoly.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
cipher_wrap.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
cipher.c
Remove redundant block_size validity check
2020-01-21 15:02:14 +01:00
cmac.c
Fix GCC format-signedness warnings
2020-04-22 16:01:48 +02:00
CMakeLists.txt
Merge pull request #3147 from gocarlos/gocarlos-patch-1
2020-04-29 17:14:48 +01:00
common.h
New header common.h; define MBEDTLS_STATIC_TESTABLE
2020-03-24 22:57:11 +01:00
ctr_drbg.c
Merge branch 'development' into development-restricted
2020-01-15 15:55:11 +00:00
debug.c
Fix GCC format-signedness warnings
2020-04-22 16:01:48 +02:00
des.c
des: Reduce number of self-test iterations
2019-09-04 10:11:45 +01:00
dhm.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
ecdh.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
ecdsa.c
Fix incrementing pointer instead of value
2020-01-24 12:11:56 +01:00
ecjpake.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
ecp_curves.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
ecp.c
Merge pull request #3209 from aurel32/fix-ecp_double_add_mxz
2020-04-24 09:28:17 +02:00
entropy_poll.c
Add support for midipix, a POSIX layer for Microsoft Windows
2020-05-20 18:14:45 +00:00
entropy.c
Merge pull request #323 from yanesca/iotcrypt-942-initialise-return-values
2019-12-19 10:24:22 +00:00
error.c
Re-generate error.c
2020-05-25 12:23:55 +02:00
gcm.c
Merge branch 'development' into development-restricted
2020-01-15 15:55:11 +00:00
havege.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
hkdf.c
hkdf_expand: explicitly initialize t
2020-04-02 19:54:51 +02:00
hmac_drbg.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
Makefile
Sort lists in Makefiles and have one item per line
2020-04-17 11:57:50 +02:00
md2.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
md4.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
md5.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
md.c
Fix "same actions in two cases of a switch statement" warning
2020-04-20 13:56:09 +03:00
memory_buffer_alloc.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
net_sockets.c
Add support for midipix, a POSIX layer for Microsoft Windows
2020-05-20 18:14:45 +00:00
nist_kw.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
oid.c
Fix GCC format-signedness warnings
2020-04-22 16:01:48 +02:00
padlock.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
pem.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
pk_wrap.c
Remove mbedtls_psa_translate_ecc_group
2020-01-31 10:15:32 +01:00
pk.c
pk: USE_PSA_CRYPTO: don't translate via the TLS ID
2020-01-31 10:15:32 +01:00
pkcs5.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
pkcs11.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
pkcs12.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
pkparse.c
Fix pkparse bug wrt MBEDTLS_RSA_ALT
2020-02-18 10:31:29 +01:00
pkwrite.c
Change key types to a 16-bit encoding
2020-01-31 10:24:21 +01:00
platform_util.c
Check for zero length and NULL buffer pointer.
2019-09-04 11:31:35 +01:00
platform.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
poly1305.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
psa_crypto_core.h
Rename internal macro to pass check-names.sh
2019-08-08 10:58:09 +02:00
psa_crypto_invasive.h
Add a facility to configure entropy sources
2018-11-23 22:58:38 +01:00
psa_crypto_its.h
Add psa_trusted_storage_linux persistent storage support for v1.0.0 APIs
2019-07-23 17:30:37 +01:00
psa_crypto_se.c
Update SE support to pass a location when registering a driver
2020-05-11 11:15:26 +02:00
psa_crypto_se.h
Update SE support to pass a location when registering a driver
2020-05-11 11:15:26 +02:00
psa_crypto_service_integration.h
Add common header for crypto service integration
2019-02-19 15:09:14 +02:00
psa_crypto_slot_management.c
Make psa_close_key(0) and psa_destroy_key(0) succeed
2019-10-08 15:57:27 +02:00
psa_crypto_slot_management.h
Rename psa_internal_allocate_key_slot to psa_get_empty_key_slot
2019-08-08 10:58:09 +02:00
psa_crypto_storage.c
Change key types to a 16-bit encoding
2020-01-31 10:24:21 +01:00
psa_crypto_storage.h
Switch storage functions over to psa_core_key_attributes_t
2019-07-31 14:15:27 +02:00
psa_crypto.c
psa: Define mbedtls_ecc_group_to_psa() inline
2020-05-05 12:41:48 +01:00
psa_its_file.c
Add an input check in psa_its_set
2019-09-05 09:34:34 -04:00
ripemd160.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
rsa_internal.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
rsa.c
Final review comments
2020-01-28 14:43:52 -05:00
sha1.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
sha256.c
Initialise return values to an error
2019-12-03 16:07:18 +00:00
sha512.c
Fix some whitespace issues
2020-01-29 09:46:49 +01:00
ssl_cache.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
ssl_ciphersuites.c
Rename identifiers containing double-underscore
2020-03-23 17:55:32 +01:00
ssl_cli.c
Merge branch 'development-restricted' into prepare-rc-2.22.0-updated
2020-04-09 12:17:11 +02:00
ssl_cookie.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
ssl_msg.c
Merge pull request #3163 from AndrzejKurek/variable-buffers-renegotiation
2020-04-09 12:11:02 +01:00
ssl_srv.c
Merge pull request #3150 from irwir/fix_ssl_srv
2020-04-22 09:31:00 +02:00
ssl_ticket.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
ssl_tls.c
Merge pull request #3312 from sander-visser/cleanup-nullptr-deref
2020-05-11 21:59:07 +02:00
threading.c
Remove crypto C files
2019-08-15 15:44:50 +01:00
timing.c
Add support for midipix, a POSIX layer for Microsoft Windows
2020-05-20 18:14:45 +00:00
version_features.c
Declare MBEDTLS_TEST_HOOKS in config.h
2020-03-24 22:56:45 +01:00
version.c
Fix missing void argument declarations #678
2016-11-04 23:05:56 +01:00
x509_create.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
x509_crl.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
x509_crt.c
Merge remote-tracking branch 'upstream/development' into fix_x509_crt.c
2020-04-27 18:01:08 +03:00
x509_csr.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
x509.c
fix mbedtls_x509_dn_gets to escape non-ASCII characters
2020-05-21 01:56:55 +09:00
x509write_crt.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
x509write_csr.c
Revert "Remove unused TLS, NET, and X.509 files"
2020-03-19 13:36:33 +01:00
xtea.c
Remove crypto C files
2019-08-15 15:44:50 +01:00