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Allegro CL version 9.0
Moderately revised from 8.2.
8.2 version

md5-final

Arguments: context &key return

Finalize and return the MD5 hash from context in a format determined by the return keyword argument.

return can be one of the following values:

cl-user(4): (setq c (md5-init))
#(1 35 69 103 137 171 205 239 254 220 ...)
cl-user(5): (md5-update c "foo")
cl-user(6): (md5-final c :return :usb8)
#(172 189 24 219 76 194 248 92 237 239 ...)

;;  Potential problem with :return :integer (or :return unspecified
;;  as the default is :integer). The call is to MD5-FILE which calls
;;  MD5-FINAL and returns the value MD5-FINAL returns.
;;
;;  Here we get the md5 value in a shell:
%  openssl dgst -md5 -hex cmp05-optdialog.jpg
MD5(cmp05-optdialog.jpg)= 03c6f3f0ede5188ac49c30e11e7afa4e

;; Now we get it with MD5-FILE:
cl-user(17): (md5-file "~/cmp05-optdialog.jpg")
5020706479262241505478555770059160142
cl-user(18): (format t "~x" *)
3c6f3f0ede5188ac49c30e11e7afa4e
nil
cl-user(19): 

;; Note the hex values are the same but the leading 0 is not printed
;; by Lisp, which is dealing with the value as an integer. The leading
;; 0 is preserved when the :return is :hex:
cl-user(21): (md5-file "~/cmp05-optdialog.jpg" :return :hex)
"03c6f3f0ede5188ac49c30e11e7afa4e"
cl-user(22): 

See MD5, SHA*, HMAC, RC4, and other message digest support in miscellaneous.htm. See also digest-final.


Copyright (c) 1998-2012, Franz Inc. Oakland, CA., USA. All rights reserved.
This page has had moderate revisions compared to the 8.2 page.
Created 2010.1.21.

ToCDocOverviewCGDocRelNotesFAQIndexPermutedIndex
Allegro CL version 9.0
Moderately revised from 8.2.
8.2 version