1EVP_PKEY_CTX_NEW(3)                 OpenSSL                EVP_PKEY_CTX_NEW(3)
2
3
4

NAME

6       EVP_PKEY_CTX_new, EVP_PKEY_CTX_new_id, EVP_PKEY_CTX_dup,
7       EVP_PKEY_CTX_free - public key algorithm context functions
8

SYNOPSIS

10        #include <openssl/evp.h>
11
12        EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
13        EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
14        EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
15        void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);
16

DESCRIPTION

18       The EVP_PKEY_CTX_new() function allocates public key algorithm context
19       using the algorithm specified in pkey and ENGINE e.
20
21       The EVP_PKEY_CTX_new_id() function allocates public key algorithm
22       context using the algorithm specified by id and ENGINE e. It is
23       normally used when no EVP_PKEY structure is associated with the
24       operations, for example during parameter generation of key generation
25       for some algorithms.
26
27       EVP_PKEY_CTX_dup() duplicates the context ctx.
28
29       EVP_PKEY_CTX_free() frees up the context ctx.  If ctx is NULL, nothing
30       is done.
31

NOTES

33       The EVP_PKEY_CTX structure is an opaque public key algorithm context
34       used by the OpenSSL high-level public key API. Contexts MUST NOT be
35       shared between threads: that is it is not permissible to use the same
36       context simultaneously in two threads.
37

RETURN VALUES

39       EVP_PKEY_CTX_new(), EVP_PKEY_CTX_new_id(), EVP_PKEY_CTX_dup() returns
40       either the newly allocated EVP_PKEY_CTX structure of NULL if an error
41       occurred.
42
43       EVP_PKEY_CTX_free() does not return a value.
44

SEE ALSO

46       EVP_PKEY_new(3)
47

HISTORY

49       These functions were added in OpenSSL 1.0.0.
50
52       Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.
53
54       Licensed under the OpenSSL license (the "License").  You may not use
55       this file except in compliance with the License.  You can obtain a copy
56       in the file LICENSE in the source distribution or at
57       <https://www.openssl.org/source/license.html>.
58
59
60
611.1.1q                            2022-07-21               EVP_PKEY_CTX_NEW(3)
Impressum