should contain a gnutls_x509_crq_t type
holds a private key
The message digest to use, i.e., GNUTLS_DIG_SHA1
unsigned int flags
must be 0
This function will sign the certificate request with a private
key. This must be the same key as the one used in
gnutls_x509_crt_set_key() since a certificate request is self
This must be the last step in a certificate request generation
since all the previously set parameters are now signed.
A known limitation of this function is, that a newly-signed
request will not be fully functional (e.g., for signature
verification), until it is exported an re-imported.
After GnuTLS 3.6.1 the value of dig may be GNUTLS_DIG_UNKNOWN,
and in that case, a suitable but reasonable for the key algorithm
will be selected.
GNUTLS_E_SUCCESS on success, otherwise a negative error code.
GNUTLS_E_ASN1_VALUE_NOT_FOUND is returned if you didn't set all
information in the certificate request (e.g., the version using
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gnutls 3.7.2 gnutls_x509_crq_privkey_sign(3)