FunctionPackage: exclToCDocOverviewCGDocRelNotesFAQIndexPermutedIndex
Allegro CL version 10.0
Unrevised from 9.0 to 10.0.
9.0 version


Arguments: string &key start end external-format return

Using sha1-init (which creates a context), sha1-update (which updates the context with the argument string), and sha1-final (which finalizes the hash), this function computes the SHA1 hash for string.

The start and end arguments specify the portion of the string to be considered and the external-format argument specifies the external hashing of the string that will be used to update the context. start defaults to 0, end defaults to the length of string, and external-format defaults to the default external format. These arguments, along with string, are passed to sha1-update.

The format of the result, just as for sha1-final, is determined by the return keyword argument. The possible values are :integer, :usb8, and :hex. See sha1-final for information on these values and the corresponding formats of the returned value.

cl-user(4): (sha1-string "foo")  ;; default return format :integer
cl-user(5): (sha1-string "foo" :return :usb8)
#(11 238 199 181 234 63 15 219 201 93 ...)

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

Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 9.0 page.
Created 2015.5.21.

Allegro CL version 10.0
Unrevised from 9.0 to 10.0.
9.0 version