This page (revision-1) was last changed on 29-Nov-2024 16:16 by UnknownAuthor

Only authorized users are allowed to rename pages.

Only authorized users are allowed to delete pages.

Page revision history

Version Date Modified Size Author Changes ... Change note

Page References

Incoming links Outgoing links
Extendable-Output Function
Extendable-Output Function

Version management

Difference between version and

At line 1 added 107 lines
!!! Overview
[{$pagename}] ([XOF]) are [Cryptographic Hash Function] which can output an arbitrarily large number of random-looking [bits].
Where most [Cryptographic Hash Functions] are fixed length.
!! Questions on Possible Uses
[FIPS 202] Appendix A.2:\\
''"it is possible to use an XOF as a hash function by selecting a fixed output length. However, XOFs have the potential for generating related outputs—a property that designers of security applications/protocols/systems may not expect of hash functions"''
\\ and later:\\
"''For example, a naïve (and non-approved) way for two parties to agree to derive a 112-bit Triple DES key from a message designated as keymaterial would be to compute SHAKE128(keymaterial, keylength), where keylength is 112. However, if an attacker is able to induce one of the parties to use a different value for keylength, say 168 bits, but the same value for keymaterial''"
!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
This page (revision-1) was last changed on 29-Nov-2024 16:16 by UnknownAuthorTop