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Article contents:[[tags: egg]] == message-digest [[toc:]] == Documentation A message-digest is a function taking some input and returning a fixed-length hash. The Message Digest suite of CHICKEN eggs provides support for a separation of digest algorithm and message source. Eggs, such as {{sha2}}, provide one or more {{sha...-primitive}} modules; many have bit-length variants. The primitive modules package the algorithm and the {{message-digest-utils}} module packages the message source support. The {{message-digest-type}} module supports efficient re-use of the same primitive with many different sources. Please consult the documentation of the eggs in the Requirements section for usage information and examples. == Usage <enscript highlight=scheme> (import message-digest-basic) </enscript> * message-digest-primitive, message-digest-type, message-digest-chunk, message-digest-byte-vector, message-digest-int <enscript highlight=scheme> (import message-digest) </enscript> * message-digest-basic plus message-digest-srfi-4, message-digest-update-item, message-digest-item, message-digest-port == Requirements [[message-digest-primitive]] [[message-digest-type]] [[message-digest-utils]] == Author [[/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/message-digest|https://anonymous@code.call-cc.org/svn/chicken-eggs/release/5/message-digest]] 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 ; 4.3.0 : Added {{raw-update}} primitive procedure. Support {{message-digest}} object reuse. Lower allocations. ; 4.0.0 : CHICKEN 5 release. ; 3.9.1 : Fix reference to non-existent {{message-digest-single}}. ; 3.9.0 : Add types. ; 3.8.0 : Fix {{message-digest-primitive?}}; accept {{*}}. ; 3.7.1 : ; 3.7.0 : Add {{message-digest-object!}}, {{message-digest-file!}}, and {{message-digest-port!}}. ; 3.6.0 : Add {{START}} and/or {{END}} optional arguments. ; 3.5.0 : Add {{finalize-message-digest!}}. ; 3.4.0 : Deprecate {{message-digest-chunk-read-maker}}. Add {{message-digest-chunk-port-read-maker}}, {{message-digest-chunk-fileno-read-maker}}. Add {{message-digest-primitive-raw-update}}. ; 3.3.0 : Deprecate {{message-digest-default-result-type}}. Add {{message-digest-result-form}}. ; 3.2.0 : Add {{message-digest-default-result-type}}. {{message-digest-chunk-*}} are parameters. ; 3.1.1 : Fix {{check-u8vector}} import. ; 3.1.0 : Added optional {{message-digest-primitive-block-length}}. ; 3.0.5 : Reverted 64 bit support. ; 3.0.4 : Removed 64 bit support. ; 3.0.3 : ; 3.0.2 : Use of compiled setup-helper. ; 3.0.1 : ; 3.0.0 : Removed deprecated procedures to own module. Removed integer packing procedures. Split into many modules. Deprecated some procedures. ; 2.3.8 : Treat integers as unsigned. (Ticket #534) Uses blob for finalization result buffer. ; 2.3.7 : Remove no checks optimization compier options. ; 2.3.6 : Deprecated close-output-digest. Restricted no checks optimization compier option. ; 2.3.5 : The {{'u8vector}} {{RESULT-FORM}} is slightly faster. Revert to allocated context memory. ; 2.3.4 : Try w/o C-level memory allocation so no finalizer needed. ; 2.3.3 : The {{'blob}} {{RESULT-FORM}} is slightly faster. ; 2.3.2 : Deprecated {{byte-string->hexadecimal}}. Deprecated {{string->hex}}, use [[string-utils]] {{string-hexadecimal#string->hex}}. Fix for the default {{message-digest-chunk-read-maker}}, blob was always chunk-size. ; 2.3.1 : Moved some utility routines into own egg(s). ; 2.3.0 : Added {{message-digest-update-char-u8}}, {{message-digest-update-char-be}}, and {{message-digest-update-char-le}}. {{message-digest-update-char}} now treats the actual bit-width of char correctly. ; 2.2.0 : Added [[Byte Packing]] API. Downgraded {{message-digest-chunk-read-maker}}, {{message-digest-chunk-size}} & {{message-digest-chunk-converter}} from {{parameter}}. ; 2.1.1 : Bug fix for hexstring: must use lowercase. ; 2.1.0 : Added message digest "phase" and port APIs. Deprecated old API. ; 2.0.1 : Bug fix for {{(message-digest-chunk-converter)}} use by {{make-binary-message-digest}}. ; 2.0.0 : Release for Chicken 4 [From a diff provided by Christian Kellermann] == License Copyright (C) 2006-2021 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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