Tidy up srp_Calc_k and SRP_Calc_u by making them a special case of
srp_Calc_xy which performs SHA1(PAD(x) | PAD(y)).

This addresses an OCAP Audit issue.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

A convenience macro was using the wrong underlying function.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

A couple of the WPACKET_sub_memcpy* macros were mis-named.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

If a STACK (corresponding to SEQUENCE OF or SET OF) is NULL then the
field is absent as opposed to empty (present but has zero elements).

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

In plain PSK we don't need to do anymore construction after the preamble.
We weren't detecting this case and treating it as an unknown cipher.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

WPACKET_allocate_bytes() requires you to know the size of the data you
are allocating for, before you create it. Sometimes this isn't the case,
for example we know the maximum size that a signature will be before we
create it, but not the actual size. WPACKET_reserve_bytes() enables us to
reserve bytes in the WPACKET, but not count them as written yet. We then
subsequently need to acall WPACKET_allocate_bytes to actually count them as
written.

Reviewed-by: Rich Salz <rsalz@openssl.org>

This was a temporary function needed during the conversion to WPACKET. All
callers have now been converted to the new way of doing this so this
function is no longer required.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Merge declarations of same type together.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Some functions were being called from both code that used WPACKETs and code
that did not. Now that more code has been converted to use WPACKETs some of
that duplication can be removed.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

If we have a handshake fragment waiting then dtls1_read_bytes() was not
correctly setting the value of recvd_type, leading to an uninit read.

Reviewed-by: Rich Salz <rsalz@openssl.org>

The new large message test in sslapitest needs OPENSSL_NO_DTLS guards

Reviewed-by: Richard Levitte <levitte@openssl.org>

Before loading a key from an engine, it may need to be initialized.
When done loading the key, we must de-initialize the engine.
(if the engine is already initialized somehow, only the reference
counter will be incremented then decremented)

Reviewed-by: Stephen Henson <steve@openssl.org>

This reverts commit 0a720029

.
This fails to call ENGINE_finish; an alternate fix is forthcoming.

Reviewed-by: Dr. Stephen Henson <steve@openssl.org>

When I said before that s_client "used to work in 1.0.2" that was only
partly true. It worked for engines which provided a default generic
method for some key type, because it called ENGINE_set_default() and
that ended up being an implicit initialisation and functional refcount.

But an engine which doesn't provide generic methods doesn't get initialised,
and then when you try to use it you get an error:

cannot load client certificate private key file from engine
140688147056384:error:26096075:engine routines:ENGINE_load_private_key:not initialised:crypto/engine/eng_pkey.c:66:
unable to load client certificate private key file

cf. https://github.com/OpenSC/libp11/issues/107

 (in which we discover
that engine_pkcs11 *used* to provide generic methods that OpenSSL would
try to use for ephemeral DH keys when negotiating ECDHE cipher suites in
TLS, and that didn't work out very well.)

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1639)

This used to work in 1.0.2 but disappeared when the argument parsing was
revamped.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1639)

Reviewed-by: Rich Salz <rsalz@openssl.org>

Add the ability to test both server initiated and client initiated reneg.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Add update for testing renegotiation. Also change info on CTLOG_FILE
environment variable - which always seems to be required.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

The conversion to WPACKET broke the construction of the renegotiation
extension.

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>

The TLSProxy::Record->new call hard-codes a version, like
70-test_sslrecords.t.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>