EVP_PKEY_up_ref (3)

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NAME

EVP_PKEY_new, EVP_PKEY_up_ref, EVP_PKEY_free - private key allocation functions

SYNOPSIS

 #include <openssl/evp.h>

 EVP_PKEY *EVP_PKEY_new(void);
 int EVP_PKEY_up_ref(EVP_PKEY *key);
 void EVP_PKEY_free(EVP_PKEY *key);

DESCRIPTION

The EVP_PKEY_new() function allocates an empty structure which is used by OpenSSL to store private keys. The reference count is set to 1.

EVP_PKEY_up_ref() increments the reference count of key.

EVP_PKEY_free() decrements the reference count of key and, if the reference count is zero, frees it up. If key is

nothing is done.

NOTES

The structure is used by various OpenSSL functions which require a general private key without reference to any particular algorithm.

The structure returned by EVP_PKEY_new() is empty. To add a private key to this empty structure the functions described in EVP_PKEY_set1_RSA(3) should be used.

RETURN VALUES

EVP_PKEY_new() returns either the newly allocated structure or if an error occurred.

EVP_PKEY_up_ref() returns 1 for success and 0 for failure.

SEE ALSO

EVP_PKEY_set1_RSA(3)

HISTORY

EVP_PKEY_new() and EVP_PKEY_free() exist in all versions of OpenSSL.

EVP_PKEY_up_ref() was first added to OpenSSL 1.1.0.

COPYRIGHT

Copyright 2002-2016 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

in the source distribution or at <www.openssl.org/source/license.html>.