DSA_get0_pqg, DSA_set0_pqg, DSA_get0_key, DSA_set0_key, DSA_clear_flags,
DSA_test_flags, DSA_set_flags, DSA_get0_engine - Routines for getting and
setting data in a DSA object
void DSA_get0_pqg(const DSA *d,
const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
void DSA_get0_key(const DSA *d,
const BIGNUM **pub_key, const BIGNUM **priv_key);
int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);
void DSA_clear_flags(DSA *d, int flags);
int DSA_test_flags(const DSA *d, int flags);
void DSA_set_flags(DSA *d, int flags);
ENGINE *DSA_get0_engine(DSA *d);
A DSA object contains the parameters p
. It also
contains a public key ( pub_key
) and (optionally) a private key
parameters can be obtained by calling
. If the parameters have not yet been set then *p
will be set to NULL. Otherwise they are set to
pointers to their respective values. These point directly to the internal
representations of the values and therefore should not be freed directly.
values can be set by calling
and passing the new values for p
as parameters to the function. Calling this function transfers the
memory management of the values to the DSA object, and therefore the values
that have been passed in should not be freed directly after this function has
To get the public and private key values use the DSA_get0_key()
A pointer to the public key will be stored in *pub_key
, and a pointer
to the private key will be stored in *priv_key
. Either may be NULL if
they have not been set yet, although if the private key has been set then the
public key must be. The values point to the internal representation of the
public key and private key values. This memory should not be freed directly.
The public and private key values can be set using DSA_set0_key()
public key must be non-NULL the first time this function is called on a given
DSA object. The private key may be NULL. On subsequent calls, either may be
NULL, which means the corresponding DSA field is left untouched. As for
this function transfers the memory management of the key
values to the DSA object, and therefore they should not be freed directly
after this function has been called.
sets the flags in the flags
parameter on the DSA
object. Multiple flags can be passed in one go (bitwise ORed together). Any
flags that are already set are left set. DSA_test_flags()
tests to see
whether the flags passed in the flags
parameter are currently set in
the DSA object. Multiple flags can be tested in one go. All flags that are
currently set are returned, or zero if none of the flags are set.
clears the specified flags within the DSA object.
returns a handle to the ENGINE that has been set for
this DSA object, or NULL if no such ENGINE has been set.
Values retrieved with DSA_get0_key()
are owned by the DSA object used in
the call and may therefore not
be passed to DSA_set0_key()
needed, duplicate the received value using BN_dup()
and pass the
duplicate. The same applies to DSA_get0_pqg()
return 1 on success or 0 on
returns the current state of the flags in the DSA
returns the ENGINE set for the DSA object or NULL if no
ENGINE has been set.
The functions described here were added in OpenSSL 1.1.0.
Copyright 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