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| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version

## sha1-string

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
    68123873083688143418383284816464454849230703155
    cl-user(5): (sha1-string "foo" :return :usb8)
    #(11 238 199 181 234 63 15 219 201 93 ...)
    cl-user(6):

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

Copyright (c) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.
This page was not revised from the 10.0 page.
Created 2019.8.20.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version