apparently memcpy(x, NULL, 0) is undefined behaviour
according to C99 (cf. sections 7.21.1 and 7.1.4), so check skip memcpy calls
when length==0; ok markus@
[sshbuf-getput-crypto.c]
The ssh_get_bignum functions must accept the same range of bignums
the corresponding ssh_put_bignum functions create. This fixes the
use of 16384-bit RSA keys (bug reported by Eivind Evensen).
ok djm@
[bufaux.c bufbn.c bufec.c buffer.c buffer.h sshbuf-getput-basic.c]
[sshbuf-getput-crypto.c sshbuf-misc.c sshbuf.c sshbuf.h ssherr.c]
[ssherr.h]
New buffer API; the first installment of the conversion/replacement
of OpenSSH's internals to make them usable as a standalone library.
This includes a set of wrappers to make it compatible with the
existing buffer API so replacement can occur incrementally.
With and ok markus@
Thanks also to Ben Hawkes, David Tomaschik, Ivan Fratric, Matthew
Dempsky and Ron Bowes for a detailed review.
