We have always a carry in %rcx or %rbx in range 0..2
from the previous stage, that is added to the result
of the 64-bit square, but the low nibble of any square
can only be 0, 1, 4, 9.
Therefore one "adcq $0, %rdx" can be removed.
Likewise in the ADX code we can remove one
"adcx %rbp, $out" since %rbp is always 0, and carry is
also zero, therefore that is a no-op.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/10574)
There is an overflow bug in the x64_64 Montgomery squaring procedure used in
exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis
suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a
result of this defect would be very difficult to perform and are not believed
likely. Attacks against DH512 are considered just feasible. However, for an
attack the target would have to re-use the DH512 private key, which is not
recommended anyway. Also applications directly using the low level API
BN_mod_exp may be affected if they use BN_FLG_CONSTTIME.
CVE-2019-1551
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/10574)
Documentation for RSA_PKCS1_WITH_TLS_PADDING padding mode as per the
previous commits, as well as the associated parameters for this mode.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10411)
Server side RSA key transport code in a Client Key Exchange message
currently uses constant time code to check that the RSA decrypt is
correctly formatted. The previous commit taught the underlying RSA
implementation how to do this instead, so we use that implementation and
remove this code from libssl.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10411)
In TLSv1.2 a pre-master secret value is passed from the client to the
server encrypted using RSA PKCS1 type 2 padding in a ClientKeyExchange
message. As well as the normal formatting rules for RSA PKCA1 type 2
padding TLS imposes some additional rules about what constitutes a well
formed key. Specifically it must be exactly the right length and
encode the TLS version originally requested by the client (as opposed to
the actual negotiated version) in its first two bytes.
All of these checks need to be done in constant time and, if they fail,
then the TLS implementation is supposed to continue anyway with a random
key (and therefore the connection will fail later on). This avoids
padding oracle type attacks.
This commit implements this within the RSA padding code so that we keep
all the constant time padding logic in one place. A later commit will
remove it from libssl.
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10411)
Ungraceful 'exit' probably causes unexpeced error on background activity.
So replace 'exit' with recommended 'travis_terminate'. Also see
https://travis-ci.community/t/exit-0-cannot-exit-successfully-on-arm/5731/4
Change-Id: I382bd93a3e15ecdf305bab23fc4adefbf0348ffb
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/10561)
These functions were already partially deprecated. Now we do it fully.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10558)
We add a new macro OPENSSL_SUPRESS_DEPRECATED which enables applications
to supress deprecation warnings where necessary.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10558)
The prototype checks shouldn't be performed on SYNOPSIS lines that
aren't function prototypes.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
This renames test/evp_fromdata_test.c to test/evp_pkey_provided_test.c,
to encourage additional testing of provider made keys.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
This also adds the missing accessor RSA_get0_pss_params(), so those
parameters can be included in the PKCS#8 data structure without
needing to know the inside of the RSA structure.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
To support generic output of public keys wrapped in a X509_PUBKEY,
additional PEM and i2d/d2i routines are added for that type.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
The BIO_vprintf() will allow the provider to print any text, given a
BIO supplied by libcrypto.
Additionally, we add a provider library with functions to collect all
the currently supplied BIO upcalls, as well as wrappers around those
upcalls.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
The following public functions is added:
- OSSL_SERIALIZER_CTX_new_by_EVP_PKEY()
- OSSL_SERIALIZER_CTX_set_cipher()
- OSSL_SERIALIZER_CTX_set_passphrase()
- OSSL_SERIALIZER_CTX_set_passphrase_cb()
- OSSL_SERIALIZER_CTX_set_passphrase_ui()
OSSL_SERIALIZER_CTX_new_by_EVP_PKEY() selects a suitable serializer
for the given EVP_PKEY, and sets up the OSSL_SERIALIZER_CTX to
function together with OSSL_SERIALIZER_to_bio() and
OSSL_SERIALIZER_to_fp().
OSSL_SERIALIZER_CTX_set_cipher() indicates what cipher should be used
to produce an encrypted serialization of the EVP_PKEY. This is passed
directly to the provider using OSSL_SERIALIZER_CTX_set_params().
OSSL_SERIALIZER_CTX_set_passphrase() can be used to set a pass phrase
to be used for the encryption. This is passed directly to the
provider using OSSL_SERIALIZER_CTX_set_params().
OSSL_SERIALIZER_CTX_set_passphrase_cb() and
OSSL_SERIALIZER_CTX_set_passphrase_ui() sets up a callback to be used
to prompt for a passphrase. This is stored in the context, and is
called via an internal intermediary at the time of serialization.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
These functions are added:
- OSSL_SERIALIZER_to_bio()
- OSSL_SERIALIZER_to_fp() (unless 'no-stdio')
OSSL_SERIALIZER_to_bio() and OSSL_SERIALIZER_to_fp() work as wrapper
functions, and call an internal "do_output" function with the given
serializer context and a BIO to output the serialized result to.
The internal "do_output" function must have intimate knowledge of the
object being output. This will defined independently with context
creators for specific OpenSSL types.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
Serialization is needed to be able to take a provider object (such as
the provider side key data) and output it in PEM form, DER form, text
form (for display), and possibly other future forms (XML? JSON? JWK?)
The idea is that a serializer should be able to handle objects it has
intimate knowledge of, as well as object data in OSSL_PARAM form. The
latter will allow libcrypto to serialize some object with a different
provider than the one holding the data, if exporting of that data is
allowed and there is a serializer that can handle it.
We will provide serializers for the types of objects we know about,
which should be useful together with any other provider that provides
implementations of the same type of object.
Serializers are selected by method name and a couple of additional
properties:
- format used to tell what format the output should be in.
Possibilities could include "format=text",
"format=pem", "format=der", "format=pem-pkcs1"
(traditional), "format=der-pkcs1" (traditional)
- type used to tell exactly what type of data should be
output, for example "type=public" (the public part of
a key), "type=private" (the private part of a key),
"type=domainparams" (domain parameters).
This also adds a passphrase callback function type,
OSSL_PASSPHRASE_CALLBACK, which is a bit like OSSL_CALLBACK, but it
takes a few extra arguments to place the result in.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
So far, the API level method constructors that are called by
ossl_method_construct_this() were passed the algorithm name string and
the dispatch table and had no access to anything else.
This change gives them access to the full OSSL_ALGORITHM item, thereby
giving them access to the property definition.
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
This was originally the private add_names_to_namemap() in
crypto/evp/evp_fetch.c, but made more generally useful.
To make for more consistent function naming, ossl_namemap_add() and
ossl_namemap_add_n() are renamed to ossl_namemap_add_name() and
ossl_namemap_add_name_n().
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10394)
The fips self test lock is deallocated in platform specific ways that may
occur after we do mem leak checking. If we don't know how to free it for
a particular platform then we just leak it deliberately. So we
temporarily disable the mem leak checking while we allocate the lock.
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9939)
The function OPENSSL_buf2hexstr() can return NULL if it fails to allocate
memory so the callers should check its return value.
Fixes#10525
Reported-by: Ziyang Li (@Liby99)
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/10526)
We were missing a NULL check in a few very similar places following an
OPENSSL_zalloc() call.
Reported-by: Ziyang Li (@Liby99)
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/10526)
Issue #8675 describes a problem where calling EVP_DecryptUpdate() with an
empty chunk causes the result to be different compared to if you do not
use an empty chunk. This adds a test for that case.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10530)
If we call EVP_EncryptUpdate/EVP_DecryptUpdate with length 0 we should
be able to handle it. Most importantly we shouldn't get different
results if we do this compared to if we don't!
An exception is made for CCM mode which has special handling for this in
the low level cipher function.
Fixes#8675
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10530)
This makes it possible to chain GENERATOR statements, which allows
constructs like this:
GENERATE[something.html]=something.pod
GENERATE[something.pod]=something.pod.in
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6236)
The 'platform' module handles defaults fine, there's no need to add
extra conditions on it being loaded.
Fixes#10513
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10514)
It appears that 'sock_timeout' is defined at least with DJGPP, so we
rename our symbol and hope the new name isn't taken.
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10515)
Depending on the size of the input, we may take different paths through
the accelerated arm64 ChaCha20 routines, each of which use a different
subset of the FP registers, some of which need to be preserved and
restored, as required by the AArch64 calling convention (AAPCS64)
In some cases, (e.g., when the input size is 640 bytes), we call the 512
byte NEON path followed directly by the scalar path, and in this case,
we preserve and restore d8 and d9, only to clobber them again
immediately before handing over to the scalar path which does not touch
the FP registers at all, and hence does not restore them either.
Fix this by moving the restoration of d8 and d9 to a later stage in the
512 byte routine, either before calling the scalar path, or when exiting
the function.
Fixes#10470
CLA: trivial
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10497)
