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Article contents:[[tags: egg]] == tiger-hash [[toc:]] == Documentation Computes the Tiger cryptographic hash function at the 192 bit digest size. See [[message-digest-primitive]] for more information. === Tiger API Component export ==== Usage <enscript language=scheme> (use tiger-hash-api) </enscript> ==== Constants ; name : algorithm name ; {{symbol}} ; version : algorithm version ; {{string}} ; context-size : context byte length ; {{fixnum}} ; digest-length : final byte length ; {{fixnum}} ; block-length : buffer byte length ; {{fixnum}} Note that {{block-length}} is informational only. ==== init <procedure>(init CTX)</procedure> Initializes a 192-bit Tiger hash {{CTX}}, with at least {{context-size}} byte size. ==== update <procedure>(update CTX OBJ LEN)</procedure> Accumulate {{LEN}} bytes from the Scheme {{OBJ}} into {{CTX}}. ==== raw-update <procedure>(raw-update CTX PTR LEN)</procedure> Accumulate {{LEN}} bytes from the byte {{PTR}} into {{CTX}}. ==== final <procedure>(final CTX OBJ)</procedure> Finalize the {{CTX}} into a Scheme {{OBJ}} with at least {{digest-length}} byte size. The target is usually a {{blob}}, {{u8vector}}, or {{string}}. === Tiger Primitive Packaged export ==== Usage <enscript language=scheme> (use tiger-hash-primitive) </enscript> ==== tiger192-primitive <procedure>(tiger192-primitive)</procedure> Returns the 192-bit Tiger hash primitive object. == Notes * For use with the [[message-digest]] extensions. == Usage <enscript language=scheme> (import tiger-hash) </enscript> == Examples * '''Note''' the {{message-digest-utils}} egg is a dependency for the example. <enscript highlight="scheme"> (import tiger-hash message-digest-byte-vector) (message-digest-string (tiger192-primitive) "abc") ;=> "2aab1484e8c158f2bfb8c5ff41b57a525129131c957b5f93" </enscript> == Notes * The {{...-primitive}} API is for use with the [[message-digest]] extensions. And the {{...-api}} API implements the {{...-primitive}} API. One packages the algorithm as a record, the other a module. == Requirements [[message-digest-primitive]] == Author Tiger/192 by Ross Anderson and Eli Biham. [[/users/kon-lovett|Kon Lovett]] == Repository This egg is hosted on the CHICKEN Subversion repository: [[https://anonymous@code.call-cc.org/svn/chicken-eggs/release/5/tiger-hash|https://anonymous@code.call-cc.org/svn/chicken-eggs/release/5/tiger-hash]] If you want to check out the source code repository of this egg and you are not familiar with Subversion, see [[/egg-svn-checkout|this page]]. == Version history ; 4.1.0 : Split into api & primitive modules. ; 4.0.0 : CHICKEN 5 release. ; 3.2.0 : Add raw-update. [[/users/kon-lovett|Kon Lovett]] ; 3.1.0 : Add block-length. [[/users/kon-lovett|Kon Lovett]] ; 3.0.0 : Remove deprecated procedures. [[/users/kon-lovett|Kon Lovett]] ; 2.0.2 : a {{message-digest-primitive}} has no "state". ; 2.0.0 : Initial release for Chicken 4 == License Copyright (C) 2009-2021 Kon Lovett. All rights reserved. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the Software), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED ASIS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. Description of your changes:

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