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.\" DO NOT MODIFY THIS FILE! It was generated by gdoc.
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.TH "gnutls_pubkey_get_preferred_hash_algorithm" 3 "3.6.14" "gnutls" "gnutls"
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.SH NAME
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gnutls_pubkey_get_preferred_hash_algorithm \- API function
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.SH SYNOPSIS
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.B #include <gnutls/abstract.h>
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.sp
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.BI "int gnutls_pubkey_get_preferred_hash_algorithm(gnutls_pubkey_t " key ", gnutls_digest_algorithm_t * " hash ", unsigned int * " mand ");"
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.SH ARGUMENTS
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.IP "gnutls_pubkey_t key" 12
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Holds the certificate
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.IP "gnutls_digest_algorithm_t * hash" 12
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The result of the call with the hash algorithm used for signature
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.IP "unsigned int * mand" 12
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If non zero it means that the algorithm MUST use this hash. May be NULL.
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.SH "DESCRIPTION"
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This function will read the certificate and return the appropriate digest
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algorithm to use for signing with this certificate. Some certificates (i.e.
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DSA might not be able to sign without the preferred algorithm).
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To get the signature algorithm instead of just the hash use \fBgnutls_pk_to_sign()\fP
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with the algorithm of the certificate/key and the provided \fIhash\fP .
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.SH "RETURNS"
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the 0 if the hash algorithm is found. A negative error code is
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returned on error.
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.SH "SINCE"
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2.12.0
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.SH "REPORTING BUGS"
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Report bugs to <bugs@gnutls.org>.
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.br
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Home page: https://www.gnutls.org
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.SH COPYRIGHT
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Copyright \(co 2001- Free Software Foundation, Inc., and others.
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.br
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Copying and distribution of this file, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved.
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.SH "SEE ALSO"
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The full documentation for
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.B gnutls
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is maintained as a Texinfo manual.
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If the /usr/share/doc/gnutls/
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directory does not contain the HTML form visit
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.B
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.IP https://www.gnutls.org/manual/
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.PP
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