EVP_PKEY_CTX_new
Section: OpenSSL (3SSL)
Updated: 2016-05-03
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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 genration for some algorithms.
EVP_PKEY_CTX_dup() duplicates the context ctx.
EVP_PKEY_CTX_free() frees up the context ctx.
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 first added to OpenSSL 1.0.0.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
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- NOTES
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- RETURN VALUES
-
- SEE ALSO
-
- HISTORY
-