The 1st patch fixes a byte ordering issue where ctx->private_key is
currently passed to ecc_is_key_valid but the key is in reverse byte order.
To solve this issue it introduces the variable 'priv', that is already used
throughout the ecc and ecdh code bases for a private key in proper byte
order, and calls ecc_is_key_valid with 'priv'. Note that ecc_gen_privkey
also calls __ecc_is_key_valid with 'priv' already.
The 2nd patch gets rid of the 'priv' variable wherever it is used to hold
a private key (byte-swapped initialized from ctx->private_key) in proper
byte order and uses ctx->private_key directly that is now initialized in
proper byte order.
Regards,
Stefan
v3:
- Added Jarkko's A-b tag
- Expanded on the description of changes to ecc_gen_privkey (2/2)
v2:
- Added missing zeroizing of priv variable (1/2)
- Improved patch description (2/2)
Stefan Berger (2):
crypto: ecdh - Pass private key in proper byte order to check valid
key
crypto: ecdh & ecc - Initialize ctx->private_key in proper byte order
crypto/ecc.c | 29 ++++++++++-------------------
crypto/ecdh.c | 9 ++++++---
include/crypto/internal/ecc.h | 3 ++-
3 files changed, 18 insertions(+), 23 deletions(-)
--
2.43.0
