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