12 EVP_KEYMGMT_do_all_provided,
13 EVP_KEYMGMT_names_do_all
14 - EVP key management routines
18 #include <openssl/evp.h>
20 typedef struct evp_keymgmt_st EVP_KEYMGMT;
22 EVP_KEYMGMT *EVP_KEYMGMT_fetch(OPENSSL_CTX *ctx, const char *algorithm,
23 const char *properties);
24 int EVP_KEYMGMT_up_ref(EVP_KEYMGMT *keymgmt);
25 void EVP_KEYMGMT_free(EVP_KEYMGMT *keymgmt);
26 const OSSL_PROVIDER *EVP_KEYMGMT_provider(const EVP_KEYMGMT *keymgmt);
27 int EVP_KEYMGMT_is_a(const EVP_KEYMGMT *keymgmt, const char *name);
28 int EVP_KEYMGMT_number(const EVP_KEYMGMT *keymgmt);
29 void EVP_KEYMGMT_do_all_provided(OPENSSL_CTX *libctx,
30 void (*fn)(EVP_KEYMGMT *keymgmt, void *arg),
32 void EVP_KEYMGMT_names_do_all(const EVP_KEYMGMT *keymgmt,
33 void (*fn)(const char *name, void *data),
38 B<EVP_KEYMGMT> is a method object that represents key management
39 implementations for different cryptographic algorithms.
40 This method object provides functionality to have providers import key
41 material from the outside, as well as export key material to the
43 Most of the functionality can only be used internally and has no
44 public interface, this object is simply passed into other functions
47 EVP_KEYMGMT_fetch() looks for an algorithm within the provider that
48 has been loaded into the B<OPENSSL_CTX> given by I<ctx>, having the
49 name given by I<algorithm> and the properties given by I<properties>.
51 EVP_KEYMGMT_up_ref() increments the reference count for the given
52 B<EVP_KEYMGMT> I<keymgmt>.
54 EVP_KEYMGMT_free() decrements the reference count for the given
55 B<EVP_KEYMGMT> I<keymgmt>, and when the count reaches zero, frees it.
57 EVP_KEYMGMT_provider() returns the provider that has this particular
60 EVP_KEYMGMT_is_a() checks if I<keymgmt> is an implementation of an
61 algorithm that's identifiable with I<name>.
63 EVP_KEYMGMT_number() returns the internal dynamic number assigned to
66 EVP_KEYMGMT_names_do_all() traverses all names for the I<keymgmt>, and
67 calls I<fn> with each name and I<data>.
69 EVP_KEYMGMT_do_all_provided() traverses all key keymgmt implementations by
70 all activated providers in the library context I<libctx>, and for each
71 of the implementations, calls I<fn> with the implementation method and
76 EVP_KEYMGMT_fetch() may be called implicitly by other fetching
77 functions, using the same library context and properties.
78 Any other API that uses keys will typically do this.
82 EVP_KEYMGMT_fetch() returns a pointer to the key management
83 implementation represented by an EVP_KEYMGMT object, or NULL on
86 EVP_KEYMGMT_up_ref() returns 1 on success, or 0 on error.
88 EVP_KEYMGMT_free() doesn't return any value.
90 EVP_KEYMGMT_provider() returns a pointer to a provider object, or NULL
93 EVP_KEYMGMT_is_a() returns 1 of I<keymgmt> was identifiable,
96 EVP_KEYMGMT_number() returns an integer.
100 L<EVP_MD_fetch(3)>, L<OPENSSL_CTX(3)>
104 The functions described here were added in OpenSSL 3.0.
108 Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
110 Licensed under the Apache License 2.0 (the "License"). You may not use
111 this file except in compliance with the License. You can obtain a copy
112 in the file LICENSE in the source distribution or at
113 L<https://www.openssl.org/source/license.html>.