Commit Graph

88 Commits

Author SHA1 Message Date
icy17 5d6322741a Add missing security rules about NULL check to various manpages
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25083)
2024-09-09 09:40:28 +02:00
Jiasheng Jiang 09ae1c9f5a Add error return value information for EVP_MD_get_size()
Add error return value information for EVP_MD_get_size() and
EVP_MD_CTX_get_size() to better guide their usages and avoid
the integer overflow, such as
4a50882 ("ssl_cipher_get_overhead(): Replace size_t with int and add the checks")
and ef9ac2f ("test/bad_dtls_test.c: Add checks for the EVP_MD_CTX_get_size()").

Signed-off-by: Jiasheng Jiang <jiashengjiangcool@outlook.com>

Reviewed-by: Tom Cosgrove <tom.cosgrove@arm.com>
Reviewed-by: Paul Dale <ppzgs1@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25282)
2024-09-05 17:16:45 +02:00
slontis c48e56874c XOF / EVP_MD_size() changes.
Added the function EVP_MD_CTX_get_size_ex() which checks for XOF and
does a ctx get rather than just returning EVP_MD_size().
SHAKE did not have a get_ctx_params() so that had to be added to return the xoflen.

Added a helper function EVP_MD_xof()
EVP_MD_CTX_size() was just an aliased macro for EVP_MD_size(), so to
keep it the same I added an extra function.

EVP_MD_size() always returns 0 for SHAKE now, since it caches the value
of md_size at the time of an EVP_MD_fetch(). This is probably better
than returning the incorrect initial value it was before e.g (16 for
SHAKE128) and returning tht always instead of the set xoflen.

Note BLAKE2B uses "size" instead of "xoflen" to do a similar thing.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/25285)
2024-08-29 10:29:53 +02:00
erbsland-dev b74646b627 Document Internal EVP_MD_CTX_ Flags
Add documentation for the internal flags `EVP_MD_CTX_FLAG_CLEANED` and
`EVP_MD_CTX_FLAG_REUSE`, explicitly stating that these flags are for
internal use only and must not be used in user code.

Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24829)
2024-07-12 15:54:35 +02:00
Vita Batrla 981d129a56 docs: document that *_free(NULL) does nothing
Explicitly documents that *_free(NULL) does nothing.
Fixes two cases where that wasn't true.
Fixes #24675.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Sasa Nedvedicky <sashan@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24735)
2024-06-27 18:26:26 +02:00
Richard Levitte b646179229 Copyright year updates
Reviewed-by: Neil Horman <nhorman@openssl.org>
Release: yes
(cherry picked from commit 0ce7d1f355)

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24034)
2024-04-09 13:43:26 +02:00
Bernd Ritter 5e5c256bba Correct the defined name of the parameter "micalg" in the documentation
The EVP_DigestInit(3) manual page contains wrong name for the define
macro for the OSSL_DIGEST_PARAM_MICALG param.

Fixes #23580

CLA: trivial

Reviewed-by: Paul Yang <kaishen.yy@antfin.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/23615)
2024-02-20 09:08:56 +01:00
Shakti Shah a8e32a6b2c Wrong release version for EVP_DigestSqueeze() in documentation
The mentioned function is targeted for 3.3.0 and EVP_MD_CTX_dup()
was added in 3.1.

Fixes #23461

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/23467)
2024-02-08 12:08:36 +01:00
slontis 5366490822 Add EVP_DigestSqueeze() API.
Fixes #7894

This allows SHAKE to squeeze multiple times with different output sizes.

The existing EVP_DigestFinalXOF() API has been left as a one shot
operation. A similar interface is used by another toolkit.

The low level SHA3_Squeeze() function needed to change slightly so
that it can handle multiple squeezes. This involves changing the
assembler code so that it passes a boolean to indicate whether
the Keccak function should be called on entry.
At the provider level, the squeeze is buffered, so that it only requests
a multiple of the blocksize when SHA3_Squeeze() is called. On the first
call the value is zero, on subsequent calls the value passed is 1.

This PR is derived from the excellent work done by @nmathewson in
https://github.com/openssl/openssl/pull/7921

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21511)
2023-11-10 13:27:00 +01:00
Tomas Mraz 6a0ae393dd Blake2b: Use OSSL_DIGEST_PARAM_SIZE as settable instead of XOFLEN
BLAKE2 is not really an extensible output function unlike SHAKE
as the digest size must be set during the context initialization.
Thus it makes no sense to use OSSL_DIGEST_PARAM_XOFLEN.

We also need to adjust EVP_DigestFinal_ex() to query the
OSSL_DIGEST_PARAM_SIZE as gettable ctx param for the size.

Fixes #22488

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22491)
2023-10-25 20:13:39 +01:00
Matt Caswell da1c088f59 Copyright year updates
Reviewed-by: Richard Levitte <levitte@openssl.org>
Release: yes
2023-09-07 09:59:15 +01:00
Tomas Mraz d4c5d8ff48 Add notes about ignoring initialization failures on contexts
Fixes #20130

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/20136)
2023-01-27 11:04:45 +01:00
Peiwei Hu dd1f28427b Refine the documents of several APIs
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19816)
2022-12-16 18:59:28 +01:00
Richard Levitte 318a9dfa5f Replace some boldened types with a corresponding man page link
The types OSSL_DISPATCH, OSSL_ITEM, OSSL_ALGORITHM, OSSL_PARAM,
OSSL_CALLBACK, and OSSL_PASSPHRASE_CALLBACK are described in their own
manual page, so we change every mention of them to links to those pages.

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19842)
2022-12-08 07:32:34 +01:00
Richard Levitte 45ada6b92b Change all references to OpenSSL 3.1 to OpenSSL 3.2 in the master branch
3.1 has been decided to be a FIPS 140-3 release, springing from the branch
openssl-3.0, and the master branch to continue with the development of
OpenSSL 3.2.

Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19350)
2022-10-07 10:05:50 +02:00
Matt Caswell fecb3aae22 Update copyright year
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Release: yes
2022-05-03 13:34:51 +01:00
Pauli 0324ae3e98 doc: document digest and cipher dup functions
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17529)
2022-01-19 21:50:22 +11:00
Matt Caswell 3dbf824380 Clarify the deprecation warnings in the docs
There was recently an instance where a user was confused by the
deprecation warnings in the docs. They believed the warning applied to
the immediately preceding function declarations, when it fact it applied
to the following function declarations.

https://mta.openssl.org/pipermail/openssl-users/2021-December/014665.html

We clarify the wording to make it clear that the warning applies to the
following functions.

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/17180)
2021-12-06 11:23:34 +00:00
Matt Caswell 971dbab4ad Clarify the documentation for the "byname" functions
Make it clear that the cipher/digest objects returned from
EVP_get_cipherbyname() and EVP_get_digestbyname() functions have no
associated implementation fetched from a provider.

Fixes #16864

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16893)
2021-10-27 12:08:44 +01:00
Richard Levitte 006de7670a EVP: Change the output size type of EVP_Q_digest() and EVP_Q_mac()
This makes them more consistent with other new interfaces.

Fixes #15839

Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15861)
2021-06-23 23:00:36 +02:00
Pauli 8809fdff93 doc: add references to digest life cycle documentation
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15637)
2021-06-08 18:55:32 +10:00
Pauli 6ea964cd4a doc: make XXX_get_number() internal
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15564)
2021-06-02 20:45:39 +10:00
Tomas Mraz 31b7f23d2f Add documentation of the old names kept as alias macros
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15405)
2021-06-01 12:43:57 +02:00
Tomas Mraz ed576acdf5 Rename all getters to use get/get0 in name
For functions that exist in 1.1.1 provide a simple aliases via #define.

Fixes #15236

Functions with OSSL_DECODER_, OSSL_ENCODER_, OSSL_STORE_LOADER_,
EVP_KEYEXCH_, EVP_KEM_, EVP_ASYM_CIPHER_, EVP_SIGNATURE_,
EVP_KEYMGMT_, EVP_RAND_, EVP_MAC_, EVP_KDF_, EVP_PKEY_,
EVP_MD_, and EVP_CIPHER_ prefixes are renamed.

Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/15405)
2021-06-01 12:40:00 +02:00
Dr. David von Oheimb 4d49b68504 Crypto: Add deprecation compatibility declarations for SHA* message digest functions
Also add hints to SHA256_Init.pod and CHANGES.md how to replace SHA256() etc.

Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14741)
2021-05-08 14:41:36 +02:00
Rich Salz f6c95e46c0 Add "origin" field to EVP_CIPHER, EVP_MD
Add a "where did this EVP_{CIPHER,MD} come from" flag: global, via fetch,
or via EVP_{CIPHER,MD}_meth_new.  Update EVP_{CIPHER,MD}_free to handle all
three origins. The flag is deliberately right before some function pointers,
so that compile-time failures (int/pointer) will occur, as opposed to
taking a bit in the existing "flags" field.  The "global variable" flag
is non-zero, so the default case of using OPENSSL_zalloc (for provider
ciphers), will do the right thing. Ref-counting is a no-op for
Make up_ref no-op for global MD and CIPHER objects

Deprecate EVP_MD_CTX_md().  Added EVP_MD_CTX_get0_md() (same semantics as
the deprecated function) and EVP_MD_CTX_get1_md().  Likewise, deprecate
EVP_CIPHER_CTX_cipher() in favor of EVP_CIPHER_CTX_get0_cipher(), and add
EVP_CIPHER_CTX_get1_CIPHER().

Refactor EVP_MD_free() and EVP_MD_meth_free() to call new common
evp_md_free_int() function.
Refactor EVP_CIPHER_free() and EVP_CIPHER_meth_free() to call new common
evp_cipher_free_int() function.

Also change some flags tests to explicit test == or != zero. E.g.,
        if (flags & x) --> if ((flags & x) != 0)
        if (!(flags & x)) --> if ((flags & x) == 0)
Only done for those lines where "get0_cipher" calls were made.

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14193)
2021-04-18 10:03:07 +02:00
Matt Caswell 906bced110 Update the algorithm fetching documentation links
The documentation on algorithm fetching has moved. There were a lot of
references to the old location so we update all of those locations.

Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1487)
2021-04-08 12:20:22 +01:00
Richard Levitte 0388823329 EVP: Add EVP_<TYPE>_description()
The following operation types are covered:

EVP_MD, EVP_CIPHER, EVP_MAC, EVP_RAND, EVP_KEYMGMT, EVP_SIGNATURE,
EVP_ASYM_CIPHER, EVP_KEM, EVP_KEYEXCH, EVP_KDF.  Also EVP_PKEY.

For EVP_MD and EVP_CIPHER, OBJ_nid2ln() is used as a fallback for
legacy implementations.

For EVP_PKEY, the info field of the EVP_PKEY_ASN1_METHOD is used as a
fallback for legacy implementations.

Fixes #14514

Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14656)
2021-04-02 08:57:47 +02:00
Pauli 5a7e999114 doc: update digest documentation to include the new init functions with params
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/14383)
2021-03-12 08:27:11 +10:00
Pauli d618ac6fd7 doc: note changes to digest gettable/settable provider calls
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14240)
2021-02-26 18:08:41 +10:00
Matt Caswell d84f5515fa Don't hold a lock when calling a callback in ossl_namemap_doall_names
We don't want to hold a read lock when calling a user supplied callback.
That callback could do anything so the risk of a deadlock is high.
Instead we collect all the names first inside the read lock, and then
subsequently call the user callback outside the read lock.

Fixes #14225

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14250)
2021-02-25 08:37:22 +10:00
Matt Caswell a28d06f3e9 Update copyright year
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14235)
2021-02-18 15:05:17 +00:00
Shane Lontis af53092c2b Replace provider digest flags with separate param fields
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13830)
2021-02-10 12:31:31 +10:00
Rich Salz 1409b5f664 Deprecate EVP_MD_CTX_{set_}update_fn()
They are still used internally in legacy code.

Also fixed up some minor things in EVP_DigestInit.pod

Fixes: #14003

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14008)
2021-02-03 11:12:16 +01:00
Tomas Mraz 2b407d0508 Documentation improvements for EVP_DigestInit_ex and related functions
Documenting when EVP_MD_CTX_reset() is implicitly called and when
type can be set to NULL.

Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/13402)
2020-11-26 17:39:26 +01:00
Dr. Matthias St. Pierre b425001010 Rename OPENSSL_CTX prefix to OSSL_LIB_CTX
Many of the new types introduced by OpenSSL 3.0 have an OSSL_ prefix,
e.g., OSSL_CALLBACK, OSSL_PARAM, OSSL_ALGORITHM, OSSL_SERIALIZER.

The OPENSSL_CTX type stands out a little by using a different prefix.
For consistency reasons, this type is renamed to OSSL_LIB_CTX.

Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/12621)
2020-10-15 11:59:53 +01:00
Gustaf Neumann 8c1cbc7210 Fix typos and repeated words
CLA: trivial

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/12320)
2020-07-05 01:49:20 +02:00
Beat Bolli 3f2a8d971a doc: fix two invalid <B> tags
Signed-off-by: Beat Bolli <dev@drbeat.li>

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/11759)
2020-05-10 09:51:08 -07:00
Matt Caswell 33388b44b6 Update copyright year
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/11616)
2020-04-23 13:55:52 +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
Richard Levitte e4a1d02300 Modify EVP_CIPHER_is_a() and EVP_MD_is_a() to handle legacy methods too
These functions would only handle provided methods, but there are
cases where the caller just passes along a received method without
knowing the underlying method tech, so might pass along a legacy
method.  We therefore need to have them handle this case as well so
they don't cause any unnecessary surprises.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10845)
2020-01-17 08:59:41 +01:00
Rich Salz 1903a9b77a Fix L<xxx(1)> links to be L<openssl-xxx(1)>
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
(Merged from https://github.com/openssl/openssl/pull/10328)
2019-11-10 18:58:50 +01:00
Richard Levitte 506cb0f632 EVP: add functions that return the name number
The returned number can be used for comparison purposes.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/9979)
2019-10-17 09:16:45 +02:00
Richard Levitte f651c727f8 EVP: add name traversal functions to all fetchable types
The following new functions all do the same thing; they traverse
the set of names assigned to implementations of each algorithm type:

EVP_MD_names_do_all(), EVP_CIPHER_names_do_all(),
EVP_MAC_names_do_all(), EVP_KEYMGMT_names_do_all(),
EVP_KEYEXCH_names_do_all(), EVP_KDF_names_do_all(),
EVP_SIGNATURE_names_do_all()

We add a warning to the documentation of EVP_CIPHER_name() and
EVP_MD_name(), as they aren't suitable to use with multiple-name
implementation.

We also remove EVP_MAC_name() and evp_KDF_name(), as they serve no
useful purpose.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/9979)
2019-10-17 09:16:45 +02:00
Richard Levitte 251e610ce4 EVP: add missing common functionality
This adds the missing functions that should be common for all
fetchable EVP sub-APIs:

EVP_KEYMGMT_is_a(), EVP_KEYMGMT_do_all_provided(), EVP_KEYEXCH_is_a(),
EVP_KEYEXCH_do_all_provided(), EVP_KDF_is_a(), EVP_MD_is_a(),
EVP_SIGNATURE_do_all_provided(), EVP_SIGNATURE_is_a().

This also renames EVP_MD_do_all_ex(), EVP_CIPHER_do_all_ex(),
EVP_KDF_do_all_ex(), EVP_MAC_do_all_ex() to change '_ex'
to '_provided'.

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/9979)
2019-10-17 09:16:45 +02:00
Christian Heimes 091aab66a6 doc: EVP_DigestInit clears all flags
Mention that EVP_DigestInit() also clears all flags.

Fixes: 10031
Signed-off-by: Christian Heimes <christian@python.org>

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/10032)
2019-10-03 10:38:47 +10:00
Pauli 0c452a51a5 Reformat param description lines
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10024)
2019-09-27 16:21:51 +10:00
Matt Caswell e6879a31ef Make EVP_MD_CTX_[gettable|settable]_params() take an EVP_MD_CTX
EVP_MD_CTX_gettable_params() and EVP_MD_CTX_settable_params() were
confusingly named because they did not take an EVP_MD_CTX parameter.

In addition we add the functions EVP_MD_gettable_ctx_params() and
EVP_MD_settable_ctx_params() which do the same thing but are passed
an EVP_MD object instead.

Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9998)
2019-09-25 12:06:21 +01:00
Richard Levitte 7c2a981ff7 DOC: fix documentation of som EVP_MD_CTX functions
They were documented to take an EVP_MD pointer, when they really take
an EVP_MD_CTX pointer.

Fixes #9993

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/9996)
2019-09-24 14:42:14 +02:00