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EVP_PKEY_CTX_NEW(3) OpenSSL EVP_PKEY_CTX_NEW(3)

EVP_PKEY_CTX_new, EVP_PKEY_CTX_new_id, EVP_PKEY_CTX_dup, EVP_PKEY_CTX_free - public key algorithm context functions

 #include <openssl/evp.h>

 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e);
 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e);
 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx);
 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx);

The EVP_PKEY_CTX_new() function allocates public key algorithm context using the algorithm specified in pkey and ENGINE e.

The EVP_PKEY_CTX_new_id() function allocates public key algorithm context using the algorithm specified by id and ENGINE e. It is normally used when no EVP_PKEY structure is associated with the operations, for example during parameter generation of key generation for some algorithms.

EVP_PKEY_CTX_dup() duplicates the context ctx.

EVP_PKEY_CTX_free() frees up the context ctx. If ctx is NULL, nothing is done.

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

EVP_PKEY_CTX_new(), EVP_PKEY_CTX_new_id(), EVP_PKEY_CTX_dup() returns either the newly allocated EVP_PKEY_CTX structure of NULL if an error occurred.

EVP_PKEY_CTX_free() does not return a value.

EVP_PKEY_new(3)

These functions were added in OpenSSL 1.0.0.

Copyright 2006-2020 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at <https://www.openssl.org/source/license.html>.

2022-05-03 1.1.1o

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