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Top Forums UNIX for Dummies Questions & Answers Why does SSH store the fingerprints of remote host when connecting for the first time? Post 302913317 by fpmurphy on Friday 15th of August 2014 08:48:09 AM
Old 08-15-2014
A fingerprint is a hash of a remote site's public key which is stored locally on your computer and used to automatically authenticate that site's public key the next time you access that site.
 

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gnutls_openpgp_crt_get_subkey_fingerprint(3)			      gnutls			      gnutls_openpgp_crt_get_subkey_fingerprint(3)

NAME
gnutls_openpgp_crt_get_subkey_fingerprint - Gets the fingerprint of a subkey SYNOPSIS
#include <gnutls/openpgp.h> int gnutls_openpgp_crt_get_subkey_fingerprint(gnutls_openpgp_crt_t key, unsigned int idx, void * fpr, size_t * fprlen); ARGUMENTS
gnutls_openpgp_crt_t key the raw data that contains the OpenPGP public key. unsigned int idx the subkey index void * fpr the buffer to save the fingerprint, must hold at least 20 bytes. size_t * fprlen the integer to save the length of the fingerprint. DESCRIPTION
Get key fingerprint of a subkey. Depending on the algorithm, the fingerprint can be 16 or 20 bytes. RETURNS
On success, 0 is returned. Otherwise, an error code. SINCE
2.4.0 REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>. GnuTLS home page: http://www.gnu.org/software/gnutls/ General help using GNU software: http://www.gnu.org/gethelp/ COPYRIGHT
Copyright (C) 2008 Free Software Foundation. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. SEE ALSO
The full documentation for gnutls is maintained as a Texinfo manual. If the info and gnutls programs are properly installed at your site, the command info gnutls should give you access to the complete manual. gnutls 2.8.6 gnutls_openpgp_crt_get_subkey_fingerprint(3)
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