Commit Graph

927 Commits

Author SHA1 Message Date
Richard Levitte
8243d8d1a1 EVP: Add EVP_PKEY_set_type_by_keymgmt() and use it
This function intialises an EVP_PKEY to contain a provider side internal
key.

We take the opportunity to also document the older EVP_PKEY_set_type()
and EVP_PKEY_set_type_str().

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11375)
2020-03-25 17:01:10 +01:00
Dr. David von Oheimb
7e765f46a6 Chunk 9 of CMP contribution to OpenSSL: CMP client and related tests
Certificate Management Protocol (CMP, RFC 4210) extension to OpenSSL
Also includes CRMF (RFC 4211) and HTTP transfer (RFC 6712).
Adds the CMP and CRMF API to libcrypto and the "cmp" app to the CLI.
Adds extensive documentation and tests.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/11300)
2020-03-25 14:10:18 +01:00
Dr. David von Oheimb
cbb9b7c460 Fix whitespace nit in OSSL_SELF_TEST_new.pod which caused doc-nits warning
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/11300)
2020-03-25 14:10:18 +01:00
Nikolay Morozov
71f852802f Issuer Sign Tool extention support
Issuer Sign Tool (1.2.643.100.112) The name of the tool used to signs the subject (ASN1_SEQUENCE)
This extention is required to obtain the status of a qualified certificate at Russian Federation.
RFC-style description is available here: https://tools.ietf.org/html/draft-deremin-rfc4491-bis-04#section-5
Russian Federal Law 63 "Digital Sign" is available here:  http://www.consultant.ru/document/cons_doc_LAW_112701/

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/11216)
2020-03-25 15:33:53 +03:00
Matt Caswell
a45694a356 Make it possible to easily specify a libctx for EVP_DigestSign*
EVP_DigestSignInit_ex and EVP_DigestVerifyInit_ex did not provide the
capability to specify an explicit OPENSSL_CTX parameter. It is still
possible by explicitly setting an EVP_PKEY_CTX - but in most cases it
would be much simpler to just specify it in the Init call. We add the
capability to do that.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11353)
2020-03-23 11:09:49 +00:00
Dr. David von Oheimb
8cc86b81ac Constify various mostly X509-related parameter types in crypto/ and apps/
in particular X509_NAME*, X509_STORE{,_CTX}*, and ASN1_INTEGER *,
also some result types of new functions, which does not break compatibility

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/10504)
2020-03-23 08:30:37 +01:00
Bernd Edlinger
7e06a6758b Fix error handling in x509v3_cache_extensions and related functions
Basically we use EXFLAG_INVALID for all kinds of out of memory and
all kinds of parse errors in x509v3_cache_extensions.

[extended tests]

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10755)
2020-03-21 18:46:36 +01:00
Shane Lontis
22e27978b2 Add support for passing the libctx to the config loader
The self tests for the fips module are triggered on startup and they need to know the
core's libctx in order to function correctly. As the provider can be autoloaded via configuration
it then needs to propagate the callers libctx down to the provider via the config load.

Note that OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CONFIG, ..) is still called, but will only load the default
configuration if the OPENSSL_CONF environment variable is set.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11240)
2020-03-20 20:25:39 +10:00
Dr. David von Oheimb
ae8483d24d Rename OSSL_{d2i,i2d}_CMP_MSG_bio to {d2i,id2}_OSSL_CMP_MSG_bio
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/11307)
2020-03-18 13:53:42 +01:00
Richard Levitte
70a7dd6f96 X509: Rename X509_set0_sm2_id() and friends
- X509_set0_sm2_id() -> X509_set0_distinguishing_id()
- X509_get0_sm2_id() -> X509_get0_distinguishing_id()
- X509_REQ_set0_sm2_id -> X509_REQ_set0_distinguishing_id()
- X509_REQ_get0_sm2_id -> X509_REQ_get0_distinguishing_id()

The reason for this rename is that the SM2 ID isn't really a unique
SM2 data item, but rather a re-use of the Distinguished that is
defined in ISO/IEC 15946-3 as well as in FIPS 196, with no special
attribution toward any algorithm in particular.

Fixes #11293

Reviewed-by: Paul Yang <kaishen.yy@antfin.com>
(Merged from https://github.com/openssl/openssl/pull/11302)
2020-03-15 19:42:04 +01:00
Richard Levitte
629b507eae DOCS: Fix the description of OSSL_PARAM_allocate_from_text()
Fixes #11276

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11279)
2020-03-14 19:18:17 +01:00
Pauli
a8c1e37d43 Remove reference to old DH files.
The files are incorrect for TLS.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11314)
2020-03-14 15:05:56 +10:00
Pauli
bee68c475d dh: document what the PEM files in apps actually contain.
They were claimed to be the SKIP primes but they are really two of the
MODP Diffie-Hellman groups for IKE.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11314)
2020-03-14 15:05:55 +10:00
Benjamin Kaduk
fe41c06e69 doc: fix spelling of TYPE_get_ex_new_index
The generated macros are TYPE_get_ex_new_index() (to match
CRYPTO_get_ex_new_index()), not TYPE_get_new_ex_index(), even though
the latter spelling seems more natural.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10943)
2020-03-13 14:20:14 -07:00
Benjamin Kaduk
06f876837a Additional updates to SSL_CTX_sess_set_get_cb.pod
Generally modernize the language.

Refer to TLS instead of SSL/TLS, and try to have more consistent
usage of commas and that/which.

Reword some descriptions to avoid implying that a list of potential
reasons for behavior is an exhaustive list.

Clarify how get_session_cb() is only called on servers (i.e., in general,
and that it's given the session ID proposed by the client).

Clarify the semantics of the get_cb()'s "copy" argument.
The behavior seems to have changed in commit
8876bc0548, though the behavior prior
to that commit was not to leave the reference-count unchanged if
*copy was not written to -- instead, libssl seemed to assume that the
callback already had incremented the reference count.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10943)
2020-03-13 14:20:13 -07:00
Richard Levitte
6292475573 EVP: Add new domparams and key generation functionality
The following functions are added:

EVP_PKEY_gen_set_params(), replacing the older EVP_PKEY_CTX_ctrl()
EVP_PKEY_gen(), replacing both EVP_PKEY_keygen() and EVP_PKEY_paramgen()

These functions are made to work together with already existing domparams
and key generation functionality: EVP_PKEY_CTX_new_provided(),
EVP_PKEY_paramgen_init(), EVP_PKEY_keygen_init(), etc.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/10289)
2020-03-12 10:44:01 +01:00
Dr. David von Oheimb
44387c9000 Move OSSL_CMP_X509_digest() to x_all.c, renaming it to X509_digest_sig()
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/11142)
2020-03-10 16:09:44 +01:00
Dr. David von Oheimb
cfca56dfae Fix handling of CMP msg senderKID and improve doc of related CTX functions
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/11142)
2020-03-10 16:09:44 +01:00
Dr. David von Oheimb
62dcd2aa17 Chunk 8 of CMP contribution to OpenSSL: CMP server and cmp_mock_srv.c for testing
Certificate Management Protocol (CMP, RFC 4210) extension to OpenSSL
Also includes CRMF (RFC 4211) and HTTP transfer (RFC 6712).
Adds the CMP and CRMF API to libcrypto and the "cmp" app to the CLI.
Adds extensive documentation and tests.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/11142)
2020-03-10 16:09:44 +01:00
Richard Levitte
041a96e7ac DOCS: Clean up doc/man3/EVP_DigestInit.pod
We touch it, we clean it up!
Accordding to common man-pages(7) guidelines.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11270)
2020-03-10 13:32:07 +01:00
Richard Levitte
b5b91a7963 DOCS: Add translation information for EVP_MD_CTX_ctrl()
EVP_MD_CTX_ctrl() translates some known control commands when faced
with a fetched EVP_MD, so we need to document it.

This also ensures that we don't drop the information on the "micalg"
parameter entirely.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11270)
2020-03-10 13:32:07 +01:00
James Peach
9f44e96e24 docs: fix typo in SSL functions
CLA: trivial

Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Paul Yang <kaishen.yy@antfin.com>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11253)
2020-03-09 10:46:57 +01:00
Pauli
6bd4e3f231 cmdline app: add provider commandline options.
Add a -provider option to allow providers to be loaded. This option can be
specified multiple times.

Add a -provider_path option to allow the path to providers to be specified.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11167)
2020-03-07 11:46:48 +10:00
Shane Lontis
55f02cb684 Change DH_get_nid() to set the value of q if it is not already set
Fixes #11108.

It only sets q if a valid named group is found.
The function signature was recently changed to pass a non const DH pointer
in order to allow the nid to be cached internally. As an extension of this
the value of q can now also be set as q is always known for named groups.
The length field is also set if q is set.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11114)
2020-03-07 07:47:58 +10:00
Matt Caswell
f529fc7d53 Clarify the usage of EVP_PKEY_get_raw_[private|public]_key()
EVP_PKEY_get_raw_private_key() and EVP_PKEY_get_raw_public_key() expect
the size of the key buffer to be populated in the |*len| parameter on
entry - but the docs made no mention of this.

Fixes #11245

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11254)
2020-03-06 20:22:41 +00:00
Dmitry Belyavskiy
348900774c Documenting newly added CMS modification
Documented CMS-related API functions.
Documented flags added to openssl-cms command

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/10904)
2020-03-03 16:34:40 +03:00
Dr. Matthias St. Pierre
88398d2a35 doc: document that 'openssl rand' is cryptographically secure
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/11213)
2020-03-03 10:55:03 +01:00
Shane Lontis
47c239c6b8 Add pairwise consistency self tests to asym keygenerators
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10952)
2020-03-03 14:02:36 +10:00
Nikolay Morozov
6103f39c0d x509v3 subjectSignTool extention support
Subject Sign Tool (1.2.643.100.111) The name of the tool used to signs the subject (UTF8String)
This extention is required to obtain the status of a qualified certificate at Russian Federation.
RFC-style description is available here: https://tools.ietf.org/html/draft-deremin-rfc4491-bis-04#section-5
Russian Federal Law 63 "Digital Sign" is available here:  http://www.consultant.ru/document/cons_doc_LAW_112701/

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/11093)
2020-02-28 18:01:16 +03:00
Matt Caswell
8efc4a9c65 Implement the ECX Serializers
Provide serializers for X25519 and X448 for text, pem and der. There are
no parameter serializers because there are no parameters for these
algorithms.

Add some documentation about the various import/export types available
Add additional testing for the serializers

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/11095)
2020-02-28 08:08:59 +10:00
Asfak Rahman
38e6c4907e bugfix in cmac calculation example
The example never executes code inside of the while loop, as read()
returns bigger number than 0. Thus the end result is wrong.

CLA: trivial

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11143)
2020-02-26 17:21:08 +01:00
Pauli
50e0402c22 sec_mem: add note about the minimum size parameter.
Add a note indicating that the minimum size parameter to
CRYPTO_secure_malloc_init() should be small.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11149)
2020-02-26 15:36:27 +10:00
Richard Levitte
e72467d3a4 doc/man3/EVP_PKEY_CTX_ctrl.pod: cleanup
Clean up a manual we've touched, according to conventions found in
Linux' man-pages(7); function arguments in descriptions should be in
italics, and types, macros and similar should be in bold, with the
exception for NULL.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10557)
2020-02-22 01:08:06 +01:00
Richard Levitte
6f4b766315 PROV: add RSA signature implementation
This includes legacy PSS controls to params conversion, and an attempt
to generalise the parameter names when they are suitable for more than
one operation.

Also added crypto/rsa/rsa_aid.c, containing proper AlgorithmIdentifiers
for known RSA+hash function combinations.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10557)
2020-02-22 01:07:15 +01:00
Dr. David von Oheimb
e8d0819d52 Don't exclude quite so much in a no-sock build
We were excluding more code than we needed to in the OCSP/HTTP code in
the event of no-sock. We should also not assume that a BIO passed to our
API is socket based.

This fixes the no-sock build

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/11134)
2020-02-21 21:41:56 +01:00
Pauli
2ee0dfa684 Params: add argument to the _from_text calls to indicate if the param exists.
The extra argument is a integer pointer and is optional.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/11049)
2020-02-21 13:04:25 +01:00
Pauli
ada66e78ef Deprecate the low level Diffie-Hellman functions.
Use of the low level DH functions has been informally discouraged for a
long time.  We now formally deprecate them.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11024)
2020-02-20 19:04:57 +10:00
Pauli
4fd8a3e110 rsa: document deprecated low level functions
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11063)
2020-02-20 18:58:40 +10:00
Richard Levitte
4e46a7afa8 DOC: Add documentation related to X509_LOOKUPs
Most of all, the base X509_LOOKUP functionality is now documented.
Furthermore, the names X509_LOOKUP_METHOD and X509_STORE are added for
reference.

Some functions were moved from X509_LOOKUP_meth_new.pod

Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/10986)
2020-02-18 05:28:31 +01:00
Dr. David von Oheimb
31b28ad96a chunk 7 of CMP contribution to OpenSSL
add CMP message validation and related tests; while doing so:
* add ERR_add_error_mem_bio() to crypto/err/err_prn.c
* move ossl_cmp_add_error_txt() as ERR_add_error_txt() to crypto/err/err_prn.c
* add X509_STORE_CTX_print_verify_cb() to crypto/x509/t_x509.c,
  adding internally x509_print_ex_brief(), print_certs(), and print_store_certs()
* move {ossl_cmp_,}X509_STORE_get1_certs() to crypto/x509/x509_lu.c

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/10620)
2020-02-17 07:43:58 +01:00
Dr. David von Oheimb
ebf3006917 improve CMP logging according to comments on CMP chunk 7 preview
in particular:
consolidate documentation of CMP logging and error reporting functions
fix compilation problem with clang on some platforms
rename OSSL_CMP_log etc. to ossl_cmp_log etc. since these macros are CMP-internal
move chopping of trailing separator to ossl_cmp_add_error_txt(), also fix handling of leading separator
internalize X509_print_ex_brief() as x509_print_ex_brief()

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/10620)
2020-02-17 07:43:58 +01:00
Richard Levitte
9a4fd80ee0 DOC: document in more detail what a BIO_read_ex() via BIO_f_buffer() does
The BIO_f_buffer() documentation tells in enough detail how it affects
BIO_gets(), but not how it affects BIO_read_ex().  This change
remedies that.

Fixes #10859

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10890)
2020-02-15 06:55:50 +01:00
Richard Levitte
9ea5924174 Document OSSL_SERIALIZER_PUBKEY_TO_DER_PQ and friends
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/11071)
2020-02-15 06:46:00 +01:00
Pauli
99b9aa95c4 Remove unused OSSL_PARAM_construct_from_text() function.
This function is recently introduced and never called by the library or tests.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11053)
2020-02-12 19:45:42 +10:00
Pauli
f41ac0eeab Deprecate the low level DSA functions.
Use of the low level DSA functions has been informally discouraged for a
long time. We now formally deprecate them.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10977)
2020-02-12 08:52:41 +10:00
Dr. David von Oheimb
29f178bddf Generalize the HTTP client so far implemented mostly in crypto/ocsp/ocsp_ht.c
The new client has become an independent libcrpyto module in crypto/http/ and
* can handle any types of requests and responses (ASN.1-encoded and plain)
* does not include potentially busy loops when waiting for responses but
* makes use of a new timeout mechanism integrated with socket-based BIO
* supports the use of HTTP proxies and TLS, including HTTPS over proxies
* supports HTTP redirection via codes 301 and 302 for GET requests
* returns more useful diagnostics in various error situations
Also adapts - and strongly simplifies - hitherto uses of HTTP in crypto/ocsp/,
crypto/x509/x_all.c, apps/lib/apps.c, and apps/{ocsp,s_client,s_server}.c

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/10667)
2020-02-10 16:49:37 +01:00
Dr. David von Oheimb
bcbb30afe2 add BIO_socket_wait(), BIO_wait(), and BIO_connect_retry() improving timeout support
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/10667)
2020-02-10 16:49:01 +01:00
Davide Galassi
f4dcc09ba7 Memory allocator code cleanup
Typedefs of CRYPTO malloc, realloc and free.

MEM_CHECK "modes" are used only as a CRYPTO_mem_ctrl() parameter

The CRYPTO_mem_ctrl is defined only if OPENSSL_NO_CRYPTO_MDEBUG is
defined, thus define the MEM_CHECK modes under the same condition.

Maybe the macros can be removed at all since:
1. CRYPTO_mem_ctrl() just returns -1 and ignores the parameter
2. CRYPTO_mem_ctr() is declared as DEPRECATED by 3.0

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/11042)
2020-02-10 16:49:10 +10:00
Dr. Matthias St. Pierre
09066cf2a1 tests/drbgtest: use new RAND_DRBG callback_data API instead of ex_data
It took me a little while to realize why the test_rand_drbg_reseed test
kept crashing after replacing the RAND_DRBG_{gs}et_ex_data() calls by
RAND_DRBG_{gs}et_callback_data().

The reason was that the ex_data API prohibits modifying the callbacks
or callback data of chained DRBGs and returned an error which was
ignored by the `test_rand_drbg_reseed` test, for good reasons.

The `test_rand_drbg_reseed` test is special in this respect, because
it needs to install callbacks for all DRBGs, in order to intercept
and count the reseeding events.

Since the drbgtest module has access to the internal structures of
the DRBG anyway, the problem could be solved by accessing the members
directly. I added a warning comment in hook_drbg().

[extended tests]

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/10950)
2020-02-07 11:38:57 +01:00
Dr. Matthias St. Pierre
30a9d5d1a7 RAND_DRBG: add a callback data for entropy and nonce callbacks
The callback data allows passing context specific data from the
application of the DRBG to to the entropy callbacks.
This a rather specialized feature which is useful for implementing
known answer tests (KATs) or deterministic signatures (RFC6979),
which require passing a specified entropy and nonce for instantiating
the DRBG.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/10950)
2020-02-07 11:38:02 +01:00