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