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

## rc4-set-key

Arguments: key-data &key start end external-format

rc4-set-key initializes the stream cipher context based on the key data. key-data can be a string or an usb8 (i.e. (unsigned-byte 8)) vector. If it is a string, then it will be internally converted to an usb8 vector according to the external-format keyword argument (or the default external format, if the keyword argument is not supplied). The start and end keyword arguments indicate the subset of key-data that will be used as the key (as if with subseq). start defaults to 0 and end defaults to the length of key-data. If key-data is a string, then start/end are in terms of characters, otherwise, they are in terms of bytes.

This function returns a fresh rc4 key context which should be used in subsequent calls to the rc4 function.

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

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