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Special Forums Cybersecurity Effects on data size during encrypted transfer Post 302384672 by sysgate on Wednesday 6th of January 2010 04:45:55 AM
Old 01-06-2010
It will depend on a few parameters - the bandwidth channel size, the type of encrypted link - IPSEC ? and the type of file itself - binary or ASCII. But generally, this encryption will add up tp 20% overhead, average of 10%.
If it's a single large file, probably you won't see a big overhead in the total transfer time and network bandwidth increase. If it were many small files in terms of big concurrency, then the overhead may become more visible, for, let's say, end users.
 

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shishi_kdcrep_set_enc_part(3)					      shishi					     shishi_kdcrep_set_enc_part(3)

NAME
shishi_kdcrep_set_enc_part - API function SYNOPSIS
#include <shishi.h> int shishi_kdcrep_set_enc_part(Shishi * handle, Shishi_asn1 kdcrep, int32_t etype, uint32_t kvno, const char * buf, size_t buflen); ARGUMENTS
Shishi * handle shishi handle as allocated by shishi_init(). Shishi_asn1 kdcrep KDC-REP to add enc-part field to. int32_t etype encryption type used to encrypt enc-part. uint32_t kvno key version number. const char * buf input array with encrypted enc-part. size_t buflen size of input array with encrypted enc-part. DESCRIPTION
Set the encrypted enc-part field in the KDC-REP. The encrypted data is usually created by calling shishi_encrypt() on the DER encoded enc-part. To save time, you may want to use shishi_kdcrep_add_enc_part() instead, which calculates the encrypted data and calls this func- tion in one step. RETURN VALUE
Returns SHISHI_OK iff successful. REPORTING BUGS
Report bugs to <bug-shishi@gnu.org>. COPYRIGHT
Copyright (C) 2002-2010 Simon Josefsson. 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 shishi is maintained as a Texinfo manual. If the info and shishi programs are properly installed at your site, the command info shishi should give you access to the complete manual. shishi 1.0.1 shishi_kdcrep_set_enc_part(3)
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