Bug: DH/ECDH key exchange tests fail on OpenSSL 3.x when salt is not used #75
Description
Problem/Opportunity
The testKeyExchangeDH and testKeyExchangeECDH tests with useSalt=SEC_FALSE
fail on OpenSSL 3.x. The hkdf() function in exchange.cpp passes nullptr to
EVP_PKEY_CTX_set1_hkdf_salt() when no salt is used. OpenSSL 3.x rejects a NULL
pointer even with length 0, while OpenSSL 1.1.x accepted it.
Affected tests (8 total):
- testKeyExchangeDH(..., SEC_FALSE)
- testKeyExchangeECDH(..., SEC_FALSE)
All pass with useSalt=SEC_TRUE.
Steps to reproduce
run sec_api_2_adapter_test
Expected Behavior
PASS
Actual Behavior
failed
Notes (Optional)
No response