RT#3859
Reviewed-by: NTim Hudson <tjh@openssl.org>

The "out" variable is used for both key and csr.  Close it after
writing the first one so it can be re-used when writing the other.
Signed-off-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NTim Hudson <tjh@openssl.org>

Thanks to Brian Carpenter <brian.carpenter@gmail.com> for finding this.
Reviewed-by: NTim Hudson <tjh@openssl.org>

If the record received is for a version that we don't support, previously we
were sending an alert back. However if the incoming record already looks
like an alert then probably we shouldn't do that. So suppress an outgoing
alert if it looks like we've got one incoming.
Reviewed-by: NKurt Roeckx <kurt@openssl.org>

The 'http proxy' commit broke s_client default host/port value.
Thanks to Matt for the simplest fix.
Reviewed-by: NMatt Caswell <matt@openssl.org>

Version negotiation was broken (one of the late changes in the review
process broke it). The problem is that TLS clients do not set first_packet,
whereas TLS/DTLS servers and DTLS clients do. The simple fix is to set
first_packet for TLS clients too.
Reviewed-by: NKurt Roeckx <kurt@openssl.org>

bn_get_bits5 was overstepping array boundary by 1 byte. It was exclusively
read overstep and data could not have been used. The only potential problem
would be if array happens to end on the very edge of last accesible page.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

RT#3852
Reviewed-by: NRichard Levitte <levitte@openssl.org>

The update: target in engines/ didn't recurse into engines/ccgost.
The update: and depend: targets in engines/ccgost needed a fixup.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

The certificate masks are used to select which ciphersuite we are going to
use. The variables |emask_k| and |emask_a| relate to export grade key
exchange and authentication respecitively. The variables |mask_k| and
|mask_a| are the equivalent versions for non-export grade. This fixes an
instance where the two usages of export/non-export were mixed up. In
practice it makes little difference since it still works!
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Remove support for the two export grade static DH ciphersuites. These two
ciphersuites were newly added (along with a number of other static DH
ciphersuites) to 1.0.2. However the two export ones have *never* worked
since they were introduced. It seems strange in any case to be adding new
export ciphersuites, and given "logjam" it also does not seem correct to
fix them.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

If BN_rand is called with |bits| set to 1 and |top| set to 1 then a 1 byte
buffer overflow can occur. There are no such instances within the OpenSSL at
the moment.

Thanks to Mateusz Kocielski (LogicalTrust), Marek Kroemeke, Filip Palian for
discovering and reporting this issue.
Reviewed-by: NKurt Roeckx <kurt@openssl.org>

The functions BN_rshift and BN_lshift shift their arguments to the right or
left by a specified number of bits. Unpredicatable results (including
crashes) can occur if a negative number is supplied for the shift value.

Thanks to Mateusz Kocielski (LogicalTrust), Marek Kroemeke and Filip Palian
for discovering and reporting this issue.
Reviewed-by: NKurt Roeckx <kurt@openssl.org>

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

Given the pervasive nature of TLS extensions it is inadvisable to run
OpenSSL without support for them. It also means that maintaining
the OPENSSL_NO_TLSEXT option within the code is very invasive (and probably
not well tested). Therefore it is being removed.
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

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

We had updates of certain header files in both Makefile.org and the
Makefile in the directory the header file lived in.  This is error
prone and also sometimes generates slightly different results (usually
just a comment that differs) depending on which way the update was
done.

This removes the file update targets from the top level Makefile, adds
an update: target in all Makefiles and has it depend on the depend: or
local_depend: targets, whichever is appropriate, so we don't get a
double run through the whole file tree.
Reviewed-by: NRich Salz <rsalz@openssl.org>

There are a number of files that are created on other branches that are
not held in git and are not needed in master. When checking out master
after working on another branch these files show up in "git status", so
just add them to .gitignore
Reviewed-by: NRichard Levitte <levitte@openssl.org>

If a client receives a bad hello request in DTLS then the alert is not
sent correctly.

RT#2801
Signed-off-by: NMatt Caswell <matt@openssl.org>
Reviewed-by: NKurt Roeckx <kurt@openssl.org>

This fixes compilation with various OPENSSL_NO_* options that got broken
during the big apps cleanup.
Reviewed-by: NRich Salz <rsalz@openssl.org>

The function RECORD_LAYER_clear() is supposed to clear the contents of the
RECORD_LAYER structure, but retain certain data such as buffers that are
allocated. Unfortunately one buffer (for compression) got missed and was
inadvertently being wiped, thus causing a memory leak.

In part this is due to the fact that RECORD_LAYER_clear() was reaching
inside SSL3_BUFFERs and SSL3_RECORDs, which it really shouldn't. So, I've
rewritten it to only clear the data it knows about, and to defer clearing
of SSL3_RECORD and SSL3_BUFFER structures to SSL_RECORD_clear() and the
new function SSL3_BUFFER_clear().
Reviewed-by: NTim Hudson <tjh@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

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

This adds support for the ASN.1 structures in draft-josefsson-scrypt-kdf-03
Private keys encrypted by scrypt can now be decrypted transparently as long
as they don't exceed the memory limits.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

Typedef STRINT_PAIR to be the same as OPT_PAIR, and use that structure and
a bunch of tables instead of switch statements to lookup various values
out of the SSL/TLS message buffers.  Shrinks a bunch of code.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

40 bit ciphers are limited to 512 bit RSA, 56 bit ciphers to 1024 bit.
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

Also reorder preferences to prefer prime curves to binary curves, and P-256 to everything else.

The result:

$ openssl s_server -named_curves "auto"

This command will negotiate an ECDHE ciphersuite with P-256:

$ openssl s_client

This command will negotiate P-384:

$ openssl s_client -curves "P-384"

This command will not negotiate ECDHE because P-224 is disabled with "auto":

$ openssl s_client -curves "P-224"
Reviewed-by: NKurt Roeckx <kurt@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

- Do not advise generation of DH parameters with dsaparam to save
computation time.
- Promote use of custom parameters more, and explicitly forbid use of
built-in parameters weaker than 2048 bits.
- Advise the callback to ignore <keylength> - it is currently called
with 1024 bits, but this value can and should be safely ignored by
servers.
Reviewed-by: NRich Salz <rsalz@openssl.org>

The default bitlength is now 2048. Also clarify that either the number
of bits or the generator must be present:

$ openssl dhparam -2
and
$ openssl dhparam 2048
generate parameters but
$ openssl dhparam
does not.
Reviewed-by: NMatt Caswell <matt@openssl.org>

Reviewed-by: NEmilia Käsper <emilia@openssl.org>

Add scrypt test support to evp_test and add test values from
from draft-josefsson-scrypt-kdf-03.
Reviewed-by: NRich Salz <rsalz@openssl.org>

Add scrypt algorithm as described in draft-josefsson-scrypt-kdf-03
Reviewed-by: NRich Salz <rsalz@openssl.org>

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

BLKINIT optimization worked on T4, but for some reason appears "too
aggressive" for T3 triggering intermiitent EC failures. It's not clear
why only EC is affected...
Reviewed-by: NTim Hudson <tjh@openssl.org>

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

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