EVP_PKEY_CTX_new.3ssl - Man Page
public key algorithm context functions
Synopsis
#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);
Description
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.
Notes
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.
Return Values
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.
See Also
History
These functions were added in OpenSSL 1.0.0.
Copyright
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>.
Referenced By
EVP_PKEY_cmp.3ssl(3), EVP_PKEY_CTX_ctrl.3ssl(3), EVP_PKEY_CTX_set1_pbe_pass.3ssl(3), EVP_PKEY_CTX_set_hkdf_md.3ssl(3), EVP_PKEY_CTX_set_rsa_pss_keygen_md.3ssl(3), EVP_PKEY_CTX_set_scrypt_N.3ssl(3), EVP_PKEY_CTX_set_tls1_prf_md.3ssl(3), EVP_PKEY_decrypt.3ssl(3), EVP_PKEY_derive.3ssl(3), EVP_PKEY_encrypt.3ssl(3), EVP_PKEY_get_default_digest_nid.3ssl(3), EVP_PKEY_keygen.3ssl(3), EVP_PKEY_meth_new.3ssl(3), EVP_PKEY_print_private.3ssl(3), EVP_PKEY_sign.3ssl(3), EVP_PKEY_verify.3ssl(3), EVP_PKEY_verify_recover.3ssl(3).
The man pages EVP_PKEY_CTX_dup.3ssl(3), EVP_PKEY_CTX_free.3ssl(3) and EVP_PKEY_CTX_new_id.3ssl(3) are aliases of EVP_PKEY_CTX_new.3ssl(3).