1gnutls_x509_privkey_sign_data(3)    gnutls    gnutls_x509_privkey_sign_data(3)
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NAME

6       gnutls_x509_privkey_sign_data - API function
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SYNOPSIS

9       #include <gnutls/x509.h>
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11       int gnutls_x509_privkey_sign_data(gnutls_x509_privkey_t key, gnutls_di‐
12       gest_algorithm_t digest, unsigned int  flags,  const  gnutls_datum_t  *
13       data, void * signature, size_t * signature_size);
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ARGUMENTS

16       gnutls_x509_privkey_t key
17                   a key
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19       gnutls_digest_algorithm_t digest
20                   should be a digest algorithm
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22       unsigned int flags
23                   should be 0 for now
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25       const gnutls_datum_t * data
26                   holds the data to be signed
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28       void * signature
29                   will contain the signature
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31       size_t * signature_size
32                   holds  the  size  of signature (and will be replaced by the
33                   new size)
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DESCRIPTION

36       This function will sign the given data using a signature algorithm sup‐
37       ported  by  the  private  key. Signature algorithms are always used to‐
38       gether with a hash functions.  Different hash functions may be used for
39       the RSA algorithm, but only SHA-1 for the DSA keys.
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41       If  the  buffer  provided is not long enough to hold the output, then *
42       signature_size is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be  re‐
43       turned.
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45       Use  gnutls_x509_crt_get_preferred_hash_algorithm()  to  determine  the
46       hash algorithm.
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RETURNS

49       On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative  er‐
50       ror value.
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REPORTING BUGS

53       Report bugs to <bugs@gnutls.org>.
54       Home page: https://www.gnutls.org
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58       Copyright © 2001- Free Software Foundation, Inc., and others.
59       Copying  and  distribution  of this file, with or without modification,
60       are permitted in any medium without royalty provided the copyright  no‐
61       tice and this notice are preserved.
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SEE ALSO

64       The  full  documentation  for gnutls is maintained as a Texinfo manual.
65       If the /usr/share/doc/gnutls/ directory does not contain the HTML  form
66       visit
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68       https://www.gnutls.org/manual/
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70gnutls                               3.7.8    gnutls_x509_privkey_sign_data(3)
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