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EVP_PKEY_CTX_NEW(3)		    OpenSSL		   EVP_PKEY_CTX_NEW(3)

NAME
       EVP_PKEY_CTX_new, EVP_PKEY_CTX_new_id, EVP_PKEY_CTX_dup,
       EVP_PKEY_CTX_free - 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
       EVP_PKEY_new(3)

HISTORY
       These functions were added in OpenSSL 1.0.0.

COPYRIGHT
       Copyright 2006-2016 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 LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>.

1.1.1d				  2019-09-10		   EVP_PKEY_CTX_NEW(3)

NAME | SYNOPSIS | DESCRIPTION | NOTES | RETURN VALUES | SEE ALSO | HISTORY | COPYRIGHT

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