The X25519 implementation comes from libsodium. Explicit copyright
notices have been added to each file as well as some portability changes
(e.g. align.h).
Add a pair of functions which can be used to allocate and free
an HMAC_CTX structure on the heap. This means that the caller doesn't
need to know the size of the underlying structure.
This adds a new backend for libhcrypto: the OpenSSL backend.
Now libhcrypto has these backends:
- hcrypto itself (i.e., the algorithms coded in lib/hcrypto)
- Common Crypto (OS X)
- PKCS#11 (specifically for Solaris, but not Solaris-specific)
- Windows CNG (Windows)
- OpenSSL (generic)
The ./configure --with-openssl=... option no longer disables the use of
hcrypto. Instead it enables the use of OpenSSL as a (and the default)
backend in libhcrypto. The libhcrypto framework is now always used.
OpenSSL should no longer be used directly within Heimdal, except in the
OpenSSL hcrypto backend itself, and files where elliptic curve (EC)
crypto is needed.
Because libhcrypto's EC support is incomplete, we can only use OpenSSL
for EC. Currently that means separating all EC-using code so that it
does not use hcrypto, thus the libhx509/hxtool and PKINIT EC code has
been moved out of the files it used to be in.
The EGD daemon is completely unmaintained and has not seen a release
since 13 years which is not an acceptable timeframe for cryptographic
software. It is not packaged in any linux distribution I know of
and definitely not in *BSD.
LibreSSL has already dropped support for RAND_egd.
