Ensure OPENSSL_cleanse() is called on the premaster secret value calculated for GOST.

With thanks to the Open Crypto Audit Project for reporting this issue.
Reviewed-by: NRich Salz <rsalz@openssl.org>

A BIGNUM can have the value of -0. The function BN_bn2hex fails to account
for this and can allocate a buffer one byte too short in the event of -0
being used, leading to a one byte buffer overrun. All usage within the
OpenSSL library is considered safe. Any security risk is considered
negligible.

With thanks to Mateusz Kocielski (LogicalTrust), Marek Kroemeke and
Filip Palian for discovering and reporting this issue.
Reviewed-by: NTim Hudson <tjh@openssl.org>

The session object on the client side is initially created during
construction of the ClientHello. If the client is DTLS1.2 capable then it
will store 1.2 as the version for the session. However if the server is only
DTLS1.0 capable then when the ServerHello comes back the client switches to
using DTLS1.0 from then on. However the session version does not get
updated. Therefore when the client attempts to resume that session the
server throws an alert because of an incorrect protocol version.
Reviewed-by: NTim Hudson <tjh@openssl.org>

Make update with manual edit so EVP_PKEY_asn1_set_item uses the same
ordinal as 1.0.2.
Reviewed-by: NMatt Caswell <matt@openssl.org>

PR#3872
Reviewed-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NStephen Henson <steve@openssl.org>
(cherry picked from commit ad0fb7f4988c8a717fe6bcb035304385fbdaef41)

Conflicts:
	crypto/asn1/ameth_lib.c

Some tool chains (e.g. android) do not define IP_PMTUDISC_PROBE, and so
this build breaks.
Reviewed-by: NTim Hudson <tjh@openssl.org>

objects.pl only looked for a space to see if the name could be
used as a C identifier.  Improve the test to match the real C
rules.
Signed-off-by: NRich Salz <rsalz@akamai.com>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Here are the "rules" for handling flags that depend on #ifdef:

- Do not ifdef the enum.  Only ifdef the OPTIONS table.  All ifdef'd
  entries appear at the end; by convention "engine" is last.  This
  ensures that at run-time, the flag will never be recognized/allowed.
  The next two bullets entries are for silencing compiler warnings:
- In the while/switch parsing statement, use #ifdef for the body to
  disable it; leave the "case OPT_xxx:" and "break" statements outside
  the ifdef/ifndef.  See ciphers.c for example.
- If there are multiple options controlled by a single guard, OPT_FOO,
  OPT_BAR, etc., put a an #ifdef around the set, and then do "#else"
  and a series of case labels and a break. See OPENSSL_NO_AES in cms.c
  for example.
Reviewed-by: NMatt Caswell <matt@openssl.org>

I also re-ordered some of #ifdef's.
Reviewed-by: NMatt Caswell <matt@openssl.org>

Reviewed-by: NMatt Caswell <matt@openssl.org>

This is for consistency.
Additionally, have its presence define OPENSSL_SYS_WINDOWS as well.
Reviewed-by: NMatt Caswell <matt@openssl.org>

Signed-off-by: NRich Salz <rsalz@akamai.com>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Signed-off-by: NRich Salz <rsalz@akamai.com>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

The code in bss_dgram.c checks if IP_MTUDISCOVER is defined, where it
should test for IP_MTU_DISCOVER

RT#3888
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

If a NewSessionTicket is received by a multi-threaded client when
attempting to reuse a previous ticket then a race condition can occur
potentially leading to a double free of the ticket data.

CVE-2015-1791

This also fixes RT#3808 where a session ID is changed for a session already
in the client session cache. Since the session ID is the key to the cache
this breaks the cache access.

Parts of this patch were inspired by this Akamai change:
https://github.com/akamai/openssl/commit/c0bf69a791239ceec64509f9f19fcafb2461b0d3Reviewed-by: NRich Salz <rsalz@openssl.org>

dtls1_get_message has an |mt| variable which is the type of the message that
is being requested. If it is negative then any message type is allowed.
However the value of |mt| is not checked in one of the main code paths, so a
peer can send a message of a completely different type and it will be
processed as if it was the message type that we were expecting. This has
very little practical consequences because the current behaviour will still
fail when the format of the message isn't as expected.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

Reviewed-by: NTim Hudson <tjh@openssl.org>

Reviewed-by: NMatt Caswell <matt@openssl.org>

Where we called openssl_cleanse, make sure we do it on all error
paths.  Be consistent in use of sizeof(foo) when possible.
Reviewed-by: NAndy Polyakov <appro@openssl.org>

struct ccs_header_st is not used so it should be removed.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Reviewed-by: NRichard Levitte <levitte@openssl.org>
Reviewed-by: NMatt Caswell <matt@openssl.org>

Almost two months ago, the warning about non-existing config file was
supressed by setting the environment variable OPENSSL_CONF to /dev/null
everywhere.  Now that this warning is gone, that practice is no longer
needed.
Reviewed-by: NStephen Henson <steve@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>

The module loading feature got broken a while ago, so restore it, but
have it a bit more explicit this time around.
Reviewed-by: NStephen Henson <steve@openssl.org>

Reviewed-by: NTim Hudson <tjh@openssl.org>

RT 3871
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Create app_load_config(), a routine to load config file.  Remove the
"always load config" from the main app.  Change the places that used to
load config to call the new common routine.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

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

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

Using an enum with -Wswitch means all lookup routines handle
all cases.  Remove X509_LU_PKEY which was never used.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

The new accessors SSL_get_client_random, SSL_get_server_random and
SSL_SESSION_get_master_key should return a size_t to match the type of the
|outlen| parameter.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Change the new SSL_get_client_random(), SSL_get_server_random() and
SSL_SESSION_get_master_key() functions to use size_t for |outlen| instead of
int.
Reviewed-by: NTim Hudson <tjh@openssl.org>

Signed-off-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

Tor uses these values to implement a low-rent clone of RFC 5705 (which,
in our defense, we came up with before RFC 5705 existed).  But now that
ssl_st is opaque, we need another way to get at them.

Includes documentation, with suitable warnings about not actually
using these functions.
Signed-off-by: NNick Mathewson <nickm@torproject.org>
Signed-off-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

Signed-off-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

On the server side, if you want to know which ciphers the client
offered, you had to use session->ciphers.  But that field is no
longer visible, so we need a method to get at it.
Signed-off-by: NNick Mathewson <nickm@torproject.org>
Signed-off-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

In master, the 'dh' command is gone, so use 'dhparam' instead to
determine if we're compiled with DH.

Also, set "@SECLEVEL=1" for the weak DH test, so that it actually
passes.
Reviewed-by: NDr Stephen Henson <steve@openssl.org>

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

Add support for PKCS#8 private key encryption using the scrypt algorithm
in the pkcs8 utility. Update documentation.
Reviewed-by: NRich Salz <rsalz@openssl.org>

This adds a new function which will encrypt a private key using PKCS#8
based on an X509_ALGOR structure and reimplements PKCS8_encrypt to use it.

Update pkcs8 utlity to use PKCS8_set0_pbe.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Set a specific error if the parameters are otherwise valid but exceed the
memory limit.
Reviewed-by: NRich Salz <rsalz@openssl.org>