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Topic: Tiger hash function


  
 Tiger (hash) - Wikipedia, the free encyclopedia
Tiger is designed using the nearly universal Merkle-Damgård paradigm.
Therfore in the example below the 192-bit (24-byte) Tiger hashes are represented as 48-digit hexadecimal numbers in big endian byte order.
The following demonstrates a 43-byte ASCII input and the corresponding Tiger hashes:
http://en.wikipedia.org/wiki/Tiger_(hash)   (351 words)

  
 mhash(3): Hash Library - Linux man page
Tiger was designed to be very fast on modern computers, and in particular on the state-of-the-art 64-bit computers, while it is still not slower than other suggested hash functions on 32-bit machines.
The algorithm(s) specified in algorithm_data.hash_algorithm, should be hash algorithms and may be used by the key generation algorithm.
This function returns the number of the hash algorithms the key generation algorithm will use.
http://www.die.net/doc/linux/man/man3/mhash.3.html   (1154 words)

  
 Joel on Software - optimized hash functions
Hashing 512 bit inputs (64 byte) into a 128 bit hash means that on average any possible hash value occurs 2^384 times for an equal distribution.
A hash function maps all possible inputs to a limited output.
AFAIK, the way the hash algorithms work is that the output strings have very small likelihood of colliding with each other by design.
http://discuss.joelonsoftware.com/?joel.3.135825.23   (2749 words)

  
 Tree Hash EXchange format (THEX)
The same hash algorithm is used as the basis of each construct, but a single '1' byte in network byte order, or 0x01 is prepended to the input of the internal node hashes, and a single '0' byte, or 0x00 is prepended to the input of the leaf node hashes.
If the the segment size is equal to or larger than the file to be hashed, the tree hash value is the value of the single segment's value, which is the same as the underlying hash algorithm value for the whole file.
This attribute specifies the size of the output of the hash function, in bytes.
http://open-content.net/specs/draft-jchapweske-thex-02.html   (2322 words)

  
 [No title]
This is the concept of optimal allocation of CPU cycles used during a hash function's execution.
Since the enhanced function would not be able to retain the same internal algorithm, it wouldn't be compatible with software implementing the original version.
These functions do not need to be slow, and the authors of these functions have overlooked a simple enough concept in their design.
http://ryan.ript.net/doc/blockhash.html   (2576 words)

  
 md5deep
Tiger is a fast new hash function, designed to be very fast on modern computers, and in particular on the state-of-the-art 64-bit computers.
Hashes sets can be drawn from the National Software Reference Library, iLook Investigator, Hashkeeper, or md5sum, and other generic hash generating programs.
The program can display either those input files that match the list of known hashes or those that do not match.
http://md5deep.sourceforge.net   (947 words)

  
 Digest::SHA2 - A variable-length one-way hash function
Generates the hash output as a binary string
Creates a SHA-2 object, where $hashlength represents the hash output length; valid values for $hashlength are 256, 384, and 512 only.
Before calculating another digest, reset() refreshes the hash state, and is, therefore, functionally equivalent to the new() method, except that no SHA-2 object is created.
http://kobesearch.cpan.org/htdocs/Digest-SHA2/Digest/SHA2.html   (628 words)

  
 Rebel Tiger FAQ - Lokasoft
This is a function of the chess engine, this is not (yet) supported by the chess tiger engine.
The user book is a function of the chess engine, if the engine does not support this function the menu is grayed.
This is a known bug, this happens when a level with a fixed time per move is selected.
http://www.lokasoft.nl/rtfaq.htm   (1159 words)

  
 Cryptographic Algorithms
Cryptographic hash functions are used in various contexts, for example to compute the message digest when making a digital signature.
The standard defines DSS to use the SHA-1 hash function exclusively to compute message digests.
MD5 (Message Digest Algorithm 5) is a cryptographic hash algorithm developed at
http://www.crazylinux.net/mirrors/www.ssh.fi/algorithms.htm   (6453 words)

  
 Tiger: A Fast New Hash Function (Designed in 1995)
Tiger is a fast new hash function, designed to be very fast on modern computers, and in particular on the state-of-the-art 64-bit computers (like DEC-Alpha), while it is still not slower than other suggested hash functions on 32-bit machines (well, not any more, after MD5 and SHA-1 were broken).
On 32-bit machines, the code of Tiger is not fully optimized.
This page will maintain the latest information on the current status of Tiger, an updated copy of the paper, reference implementations, and the S box generation program.
http://www.cs.technion.ac.il/~biham/Reports/Tiger   (533 words)

  
 Encryption Tutorial — Lesson 2
Hashes are binary, which means the stuff in $hash_of_string is binary data.
Obviously, hash functions are very useful in determining if a file or string has changed.
Now create the hash, by assigning the value of the output of the mhash() function to a variable.
http://www.webmonkey.com/webmonkey/00/20/index4a.html   (774 words)

  
 Tiger (GNU cryptographic primitives and tools, version 2.0.0)
Tiger was designed by Ross Anderson and Eli Biham, with the goal of producing a secure, fast hash function that performs especially well on next-generation 64-bit architectures, but is still efficient on 32- and 16-bit architectures.
the bytes to pad the remaining bytes in the buffer before completing a hash operation.
Returns the byte array to use as padding before completing a hash operation.
http://www.gnu.org/software/gnu-crypto/manual/api/gnu/crypto/hash/Tiger.html   (190 words)

  
 Unix Host and Network Security Tools
The data is transformed by a one-way function into a 8-byte key, which is then used by the algorithm.
Included are functions implementing the algorithm, functions implementing related capabilities including a DES implementation for recipients in the USA, and a program, rpem, that implements a simple Privacy Enhanced Mail system.
This is perhaps not as strong as it might be, but it is better than what was used and if the machine is at all busy on the network the attacker faces essentially random sequences of numbers.
http://csrc.nist.gov/tools/tools.htm   (6877 words)

  
 Software Download: Hash
It is a collection of functions for Windows programmers that allows to implement RSA public key encryption, AES (Rijndael) and ArcFour (RC4) secret key encryption and digital signatures using the SHA-1, SHA-256 or MD5 Secure Hash Algorithm in your programs.
Free calculator to compute multiple hashes, checksums and HMACs for files, text and hex strings.
The key value generation functionality of TSIG Key Generator is already built into Simple DNS Plus and Simple Failover from JH Software.
http://www.sharewareconnection.com/titles/hash.htm   (3137 words)

  
 AudioSense.org - Add Tiger Tree Hash to AccurateRip DB Poll
IF the root hash matches there is no reason to verify the chunks, but if the root does not match you could attempt to verify chunks of the file to see if a segment can be identified that is corrupt.
Also, as stated before, the function inevitably is left up-to the developers, but end-user input has been known to move mountains in coder world
Adding Tiger Tree Hashes to the Accurate Rip Database could allow for greatly increased functionality and versitility when using the database.
http://www.audiosense.org/forum/showthread.php?t=157   (806 words)

  
 hash function - OneLook Dictionary Search
hash function : Free On-line Dictionary of Computing [home, info]
hash function : Hutchinson Dictionary of Computers, Multimedia, and the Internet [home, info]
hash function : Glossary of Communications, Computer, Data, and Information Security Terms [home, info]
http://www.onelook.com/cgi-bin/cgiwrap/bware/dofind.cgi?word=hash+function   (140 words)

  
 Cryptographic Algorithms
Snefru is a hash function designed by Ralph Merkle, the designer of the Khufu and Khafre encryption algorithms.
Blowfish combines a Feistel network, key-dependent S-Boxes, and a non-invertible F function to create what is perhaps one of the most secure algorithms available.
The original published algorithm, known as SHA, was modified by NSA to protect against an unspecified attack; the updated algorithm is named SHA1.
http://www.baltsoft.com/files/ee/Cryptographic_Algorithms.htm   (2820 words)

  
 Standard Cryptographic Algorithm Naming
For messages that are specified as octet strings (or a multiple of 8 bits), a left-justified algorithm that employs the "one and zeroes" padding method can be implemented by appending the byte value 0x80 to the message.
That would imply that the first byte of padding is 0x80, and the initial version of the Tiger reference implementation was consistent with this interpretation.
One of the attributes of message digest algorithms that sometimes causes interoperability problems or difficulty in implementation, is that by convention most message digests can be applied to either a bit string, or a byte string.
http://www.users.zetnet.co.uk/hopwood/crypto/scan/md.html   (3581 words)

  
 The Hashing Function Lounge
Zheng, J. Pieprzyk, and J. Seberry, "HAVAL - a one-way hashing algorithm with variable length of output", Advances in Cryptology - Auscrypt'92, LNCS 718, Springer-Verlag (1993), pp.
Daemen, " Cipher and Hash Function Design, Strategies Based on Linear and Differential Cryptanalysis", Doctoral dissertation, Katholiek Universiteit Leuven, 1995.
Daemen, R. Govaerts, and J. Vandewalle, "A Framework for the Design of One-Way Hash Functions Including Cryptanalysis of Damgård's One-Way Function Based on Cellular Automata", Advances in Cryptology - Asiacrypt'91, LNCS 739, Springer-Verlag (1993), pp.
http://paginas.terra.com.br/informatica/paulobarreto/hflounge.html   (1523 words)

  
 Hash
In computer science hash could be short for one of the following...
Hash (company) Hash, Inc. is a software company that has been making and selling 3D character animation software since 1...
Distributed hash table A distributed hash table (DHT), is a technology based on hash tables enabling identification and...
http://www.brainyencyclopedia.com/topics/hash.html   (318 words)

  
 ABC Online Forum
Tiger is a set of scripts that scan a Unix system looking for security...
Genuine commercial websites need IE and other browsers to function correctly so the site works properly and can record hits so advertising can be sold.
Yet for reasonable protection from known sites of poor reputation this function of IE needs to be used.
http://www2b.abc.net.au/science/techtalk/newposts/162/topic162910.shtm   (6364 words)

  
 C/C++ Users Journal Web Site
For a given list of strings, it produces a "perfect" (no collisions) hash function and hash table, in form of C or C++ code, for looking up a value depending on the input string.
GGCL is a collection of graph algorithms and data structures, created in the generic programming style of the Standard Template Library (STL).
Providing modular functions for math functions, arbitrary precision, queues, lists, bit arrays, hash tables, soundex, date functions, CRC/checksum, malloc with fenceposts, timers, POSIX funcs, etc. etc.
http://www.cuj.com/link/subject4.htm   (601 words)

  
 Neohapsis Archives - Crypto - Re: tiger hash on win32 - From mdw
> > the output of the hash function for these two different versions
> > However, it also outputs incorrect hash values.
> > output the correct hash values under win32/MSVC++ 6.0 -- there seems to
http://archives.neohapsis.com/archives/crypto/2000-q4/0744.html   (710 words)

  
 GNU Crypto - GNU Project - Free Software Foundation (FSF)
HAVAL: A One-Way Hashing Algorithm with Variable Length of Output (Extended Abstract).
One of the objectives of such format is to provide free Java projects with similar functionalities to those offered by the Java Keystore (JKS) format.
Also available is a "development release," which adds a great deal of functionality atop 2.0, but maintains most of the present interface:
http://www.gnu.org/software/gnu-crypto   (1595 words)

  
 NetCard Project (electronic commerce) - Deliverables/Publications
The recursive hashing technique greatly reduces the computational complexity in applications where a series of low value payments are made to the same merchant.
This was designed to run extremely fast on the new 64-bit processors such as DEC Alpha, while still running reasonably quickly on existing hardware such as Intel 80486.A reference implementation can be got by clicking here, while a note on how we generated the Tiger S-boxes can be got by clicking here.
Hash chains, as used in the NetCard protocol, are utilised in a different way to establish secure association at low computational cost.
http://www.cl.cam.ac.uk/Research/Security/resources/NetCard/project_publ.html   (1071 words)

  
 CTNHashProc - anmar.eu.org open source projects
An unsupported hash function can also be added but you need a C++ implementation of the function or a library that supports it.
Any other hash function supported by the library Crypto++ Version 5.1 may be added easy to CTNHashProc.
jsSHA2 - jsSHA2 is is an OpenSource JavaScript implementation of the Secure Hash Algorithm, SHA-256-384-512.
http://anmar.eu.org/projects/CTNHashProc   (235 words)

  
 Articles
The feature is very useful and samhain has a nice audit-trail function for dealing with the file changes.
If you have already initialized a database and want to update the status of files, use the update function:
But if you do not want this feature enabled specify:
http://software.newsforge.com/print.pl?sid=03/07/29/1727249   (2234 words)

  
 Moonlight's eMule Tweaks Documentation: Hash tree generation benchmarks
(Moonlight's P3-1000/PC133/XP) Base Level: 10, Buildup Level: 12, Depth Level= 2, IO Level 13 Now benchmarking the hashes...
--------------------------------------------------------------------------------------- Base Level: 10, Buildup Level: 12, Depth Level= 2, IO Level 14 Now benchmarking the hashes...
Dummy : 0.282s (134.572MB/s) 00000000 MD4 : 1.253s (30.327MB/s) 7CD35633:245B22FF:753B3245:9588653C MD5 : 1.783s (21.322MB/s) 4CE0036E:6D81FE0D:A892403D:371903FC Tiger : 5.382s (7.063MB/s) 8525B8D7:7D61B76A:9540074A:2517E873:555ADC06:52AD8BDA SHA-1 : 4.237s (8.970MB/s) 6A8BF0A8:24725759:84D011CF:B780E0C0:2A200B7E --------------------------------------------------------------------------------------- Base Level: 14, Buildup Level: 16, Depth Level= 2, IO Level 17 Now benchmarking the hashes...
http://pages.infinit.net/moonligh/eMule/Demo001Extra.html   (797 words)

  
 Home page for Plasm: not a crime
The results of the hash function, the original unencrypted data and that data's position in the original communication are combined to form a chunk.
The methodology begins by dividing the communication into a large number of small pieces.
These identifiers are converted into a form useable by the Tiger hash code and are subsequently used to winnow out the corresponding message.
http://www.plasm.com/not.a.crime   (794 words)

  
 Date (Java 2 Platform SE 5.0)
Returns a hash code value for this object.
It also allowed the formatting and parsing of date strings.
That is, the hash code is the value of the expression:
http://java.sun.com/j2se/1.5.0/docs/api/java/util/Date.html   (2798 words)

  
 Gtk-Gnutella: tiger.h File Reference
Runs some test cases to check whether the implementation of the tiger hash algorithm is alright.
Go to the source code of this file.
Generated on Sat Nov 12 13:57:12 2005 for Gtk-Gnutella by
http://gtk-gnutella.sourceforge.net/doxygen/tiger_8h.html   (50 words)

  
 ronniemadsen.dk » informations-sikkerhed
The worm still has some bot functionality: Computers infected with the worm will join an Internet relay chat (IRC) session at a predefined addresses.
If a computer is infected with the program, the worm starts a file-transfer protocol (FTP) server and attempts to spread further.
An attacker who knows the IRC channel password can command the bot to disconnect or reconnect to the IRC channel, obtain system information, clean itself from the system, modify security settings, and download or execute files, according to an analysis of the Zotob.B worm.
http://ronniemadsen.dk/?cat=1   (3666 words)

  
 NOW SERVING: #945317692
Saying all these prayers can be tedious, especially when you have no idea which one-way hash function is preferred by apostles.
And the NSA.) So, to accomodate the lifestyle of today's on-the-go sinner, we provide a Bonus Instant Win opportunity.
Let's Make a Deal, Instant Win, and US Dollars are registered trademarks of Satan, Inc. The letter i is a service mark of Morgan Stanley Dean Witter & Co. BSOD is a registered trademark of Microsoft Corporation.
http://www.people.cornell.edu/pages/ch75/alt/confess/absolve.html   (407 words)

  
 Encyclopedia4U - List of cryptology topics - Encyclopedia Article
The Codebreakers -- The Communications Theory of Secrecy Systems -- TEMPEST -- Tiger hash function -- timing attack -- traffic analysis -- trapdoor function -- Twofish encryption algorithm --
hardware random number generator -- hash function -- Henryk Zygalski --
http://www.encyclopedia4u.com/l/list-of-cryptology-topics.html   (601 words)

  
 Mike Davidson: BitTorrenting Tiger
The size of this upgrade makes it more suitable for DVD distribution.
Well, rather than using BitTorrent to distribut the file, why not use a function already built into OSX?
Tiger is a totally new, fully featured operating system that contains new applications and utilities.
http://www.mikeindustries.com/blog/archive/2005/04/bittorrenting-tiger   (6420 words)

  
 TigerDNA - Wikipedia, the free encyclopedia
And finally, the last one, is a description made of 3 blocks of 64 bit for each Mb of the file.
It works by dividing the file in blocks of 1Mb and hashing them with "Tiger hash function".
It is used to make DNAs of files using the Tiger hash function.
http://en.wikipedia.org/wiki/TigerDNA   (204 words)

  
 Hash: Information From Answers.com
Hash table - In computer science a type of Associative array.
Hash function- A specialized type of function used to convert data with a large range to a smaller range.
This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title.
http://www.answers.com/topic/hash-4   (216 words)

  
 Simple Machines Community Forum - Suggested Modification to Hash Function
For one thing any hashing done on a 64bit process is 3.5x faster and 1.5x faster on a 32 bit machines.
(although that is simplifying it.) If you read that site, such hashes are not broken by that system.
Tiger has no real use restrictions other then you have to notify them of your project.
http://www.simplemachines.org/community/index.php?topic=8465.msg115812   (308 words)

  
 [No title]
Samhain allows you to monitor the integrity of your files, whether on a single machine or on a network.
It is easy to configure, maintains a single database (per host) for storing signatures of files, and uses a fast 192-bit cryptographic hash function (TIGER) to generate such signatures.
http://www.icewalkers.com/search.php?m=exact&w=k&q=samhain   (87 words)

  
 so-much-for-md5
The very least we need to do now is add different hash functions to our crypto software.
The problem is that MD5 and SHA-1 are _the_ cryptographic hash functions.
A cryptographic hash function must be considered broken if b) does no longer hold, even if the attack is very expensive, as long as it is feasible.
http://www.crackmonkey.org/~nick/mail/so-much-for-md5   (968 words)

  
 Science Math Applications Communication Theory Cryptography Algorithms Message Digests
Secure Hash Algorithm Directory - MD5, SHA-1 and HMAC information, resources and API's.
Tiger: A Fast New Hash Function - Optimized for 64-bit processors and produces 128, 160, or 192-bit hashes.
Whirlpool Hashing Function - A 512-bit hashing function, submitted to NESSIE and selected as finalist.
http://www.iper1.com/iper1-odp/scat/id/Science/Math/Applications/Communication_Theory/Cryptography/Algorithms/Message_Digests   (166 words)

  
 Security Forums Dot Com :: View topic - HASH & HASHers
this last add-on to my program isn't a BIG DEAL, however, in case someone would need to test HASH functions or get File's Message Digest, I have added a dedicated page to 96crypt for this particular task.
As most of these HASH functions are already part of my program for its internal process, I just made them "accessible from outside" as well.
Results can be displayed in Base16, Base64 or ASCII
http://www.security-forums.com/forum/viewtopic.php?t=8577   (448 words)

  
 Hash Functions
A New Paradigm for Collision-free Hashing: Incrementality at Reduced Cost
Hash Functions Based on Block Ciphers and Quaternary Codes
Limits on the Efficiency of One-Way Permutation-Based Hash Functions
http://www.cs.ut.ee/~helger/crypto/link/hash   (243 words)

  
 Tiger (jMule: a Java massive parallel file sharing client)
Tiger (jMule: a Java massive parallel file sharing client)
Licensed under the terms of GNU GP License.
Implemation based on paper by Ross Andernson and Eli Biham: "Tiger: A Fast New Hash Function" and their c implemtion see http://www.cs.technion.ac.il/~biham/Reports/Tiger/ and http://www.cl.cam.ac.uk/users/rja14/
http://jmule.sourceforge.net/doc/javadoc/org/jmule/util/Tiger.html   (180 words)

  
 Links related to SlavaSoft QuickHash Library
RFC1952 - GZIP file format specification version 4.3
RFC3174 - US Secure Hash Algorithm 1 (SHA1)
http://www.slavasoft.com/quickhash/links.htm   (107 words)

  
 Tom Dunigan's Security page
CAST or RFC2144 and cast-256 and crypto algorithms and CAST S box design bent functions
crypto algorithms and crypto crypto performance ciphers, hashes, CRCs
hashing function lounge and hash functions and more hash function references
http://www.csm.ornl.gov/~dunigan/security.html   (3486 words)

  
 [No title]
# IDEA (International Data Encryption Algorithm) - a 128 bit key # RC4 - used to be a trade secret # SAFER # Ciphers based on a hash function # Enigma # Vigenere 3.
Cryptographic Hash Functions - MD5 (Message Digest Algorithm 5) - MD2, MD4 - SHA (Secure Hash Algorithm) - Tiger - RIPEMD-160 : most recent hash function -
Block Cipher Modes - block ciphers means that they take a fixed-size block of data(usually 64 bits), an transform it to another 64bit block using a fuction selected by the key.
http://www.cs.uml.edu/~byoo/www_bjryu/IW/README-Cryptographic   (783 words)

  
 brad's life
So frustrating, that you can't write a simple numeric algorithm that work in a bunch of browsers without "cleaning" your variables all over the place to make sure they're actually numbers.
What's worse, it seems that functions in the standard JavaScript library (Math.*, etc) are inconsistent between browsers with regard to shortcuts they take to return early, passing back copies of your original variable without the internal "I'm a string!" flag changed to "I'm a number!".
Next up: a JSBorg.log(...) function so I can do:
http://brad.livejournal.com   (2659 words)

  
 deconcept › FlashObject: Javascript Flash detection and embed script
The FlashObject script also comes with an extra function which allows you to pull variable values from the url string.
This meant that if you tried to set other options using them, like Flashvars or Align, Salign, etc. Safari would not see those values.
This makes passing variables from FlashVars parameters a hassle and make it a pain to maintain Flash content as you now have twice as many swf files floating around your web server.
http://blog.deconcept.com/flashobject   (2919 words)

  
 sci.crypt: Re: Tiger optimization (Re: LibTomCrypt [v0.95])
In reply to: Tom St Denis: "Re: Tiger optimization (Re: LibTomCrypt [v0.95])"
I think, It should be builded the first time the user call
>> "tiger_init" function and it should be kept live until application deads.
http://www.derkeiler.com/Newsgroups/sci.crypt/2004-05/4943.html   (324 words)

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