Функции API (API function)
Имя (Name)
gnutls_privkey_import_ext4 - API function
Синопсис (Synopsis)
#include <gnutls/abstract.h>
int gnutls_privkey_import_ext4(gnutls_privkey_t pkey, void *
userdata, gnutls_privkey_sign_data_func sign_data_fn,
gnutls_privkey_sign_hash_func sign_hash_fn,
gnutls_privkey_decrypt_func decrypt_fn,
gnutls_privkey_deinit_func deinit_fn, gnutls_privkey_info_func
info_fn, unsigned int flags);
Аргументы (Arguments)
gnutls_privkey_t pkey
The private key
void * userdata
private data to be provided to the callbacks
gnutls_privkey_sign_data_func sign_data_fn
callback for signature operations (may be NULL)
gnutls_privkey_sign_hash_func sign_hash_fn
callback for signature operations (may be NULL)
gnutls_privkey_decrypt_func decrypt_fn
callback for decryption operations (may be NULL)
gnutls_privkey_deinit_func deinit_fn
a deinitialization function
gnutls_privkey_info_func info_fn
returns info about the public key algorithm (should
not be NULL)
unsigned int flags
Flags for the import
Описание (Description)
This function will associate the given callbacks with the
gnutls_privkey_t type. At least one of the callbacks must be
non-null. If a deinitialization function is provided then flags
is assumed to contain GNUTLS_PRIVKEY_IMPORT_AUTO_RELEASE.
Note that in contrast with the signing function of
gnutls_privkey_import_ext3(), the signing functions provided to
this function take explicitly the signature algorithm as
parameter and different functions are provided to sign the data
and hashes.
The sign_hash_fn is to be called to sign pre-hashed data. The
input to the callback is the output of the hash (such as SHA256)
corresponding to the signature algorithm. For RSA PKCS1
signatures, the signature algorithm can be set to
GNUTLS_SIGN_RSA_RAW, and in that case the data should be handled
as if they were an RSA PKCS1 DigestInfo structure.
The sign_data_fn is to be called to sign data. The input data
will be he data to be signed (and hashed), with the provided
signature algorithm. This function is to be used for signature
algorithms like Ed25519 which cannot take pre-hashed data as
input.
When both sign_data_fn and sign_hash_fn functions are provided
they must be able to operate on all the supported signature
algorithms, unless prohibited by the type of the algorithm (e.g.,
as with Ed25519).
The info_fn must provide information on the signature algorithms
supported by this private key, and should support the flags
GNUTLS_PRIVKEY_INFO_PK_ALGO, GNUTLS_PRIVKEY_INFO_HAVE_SIGN_ALGO
and GNUTLS_PRIVKEY_INFO_PK_ALGO_BITS. It must return -1 on
unknown flags.
Возвращаемое значение (Return value)
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a
negative error value.
Сообщение об ошибках (Reporting bugs)
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
Смотри также (See also)
The full documentation for gnutls is maintained as a Texinfo
manual. If the /usr/share/doc/gnutls/ directory does not contain
the HTML form visit
https://www.gnutls.org/manual/
