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=pod
=head1 NAME
EVP_PKEY_new, EVP_PKEY_free - private key allocation functions.
=head1 SYNOPSIS
#include <openssl/evp.h>
EVP_PKEY *EVP_PKEY_new(void);
void EVP_PKEY_free(EVP_PKEY *key);
=head1 DESCRIPTION
The EVP_PKEY_new() function allocates an empty B<EVP_PKEY>
structure which is used by OpenSSL to store private keys.
EVP_PKEY_free() frees up the private key B<key>.
=head1 NOTES
The B<EVP_PKEY> 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
L<EVP_PKEY_set1_RSA(3)|EVP_PKEY_set1_RSA(3)> should be used.
=head1 RETURN VALUES
EVP_PKEY_new() returns either the newly allocated B<EVP_PKEY>
structure of B<NULL> if an error occurred.
EVP_PKEY_free() does not return a value.
=head1 SEE ALSO
L<EVP_PKEY_set1_RSA(3)|EVP_PKEY_set1_RSA(3)>
=cut
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