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Re: string encryption

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On 28/04/2021 16:27, Malcolm McLean wrote:
> What's the best method for cheap and cheerful string encryption,
> which takes a plaintext string and a short string as a key, and
> returns a crypted string? The encrypted text must be a string, so
> the encryption must never create a nul character. It might also be
> best not to create ascii control characters, or non-ascii
> characters.
> 

Any preferences for language?  Some languages have such functions in
their standard libraries.  Any need for standards or compatibility, or
is it just for your own use?

You could take your string as a list of bytes, step through it xor'ing
with the key string, then uuencode the result to get a string again.  It
will be okay if you are only encrypting a few short strings with the
same key, and if there is no obvious known pattern in the strings to aid
cracking.

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string encryption Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-04-28 07:27 -0700
  Re: string encryption Kristjan Robam <he12457@hotmail.com> - 2021-04-28 08:39 -0700
  Re: string encryption David Brown <david.brown@hesbynett.no> - 2021-04-28 19:58 +0200
    Re: string encryption David Spencer <spencer@panix.com> - 2021-04-28 18:00 +0000
      Re: string encryption David Brown <david.brown@hesbynett.no> - 2021-04-28 20:47 +0200
      Re: string encryption Kristjan Robam <rob999999999@yahoo.com> - 2021-04-29 02:26 -0700
    Re: string encryption Kristjan Robam <ya12983@mail.com> - 2021-04-28 12:14 -0700
    Re: string encryption Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-04-28 14:33 -0700
    Re: string encryption Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-04-28 14:39 -0700
  Re: string encryption "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2021-04-28 21:55 +0200
    Re: string encryption Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-04-28 14:33 -0700
      Re: string encryption "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2021-04-29 08:06 +0200
        Re: string encryption David Brown <david.brown@hesbynett.no> - 2021-04-29 09:38 +0200
          Re: string encryption "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> - 2021-04-29 10:00 +0200
          Re: string encryption Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-04-29 22:33 +0100
      Re: string encryption David Brown <david.brown@hesbynett.no> - 2021-04-29 09:37 +0200
        Re: string encryption Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-04-29 06:40 -0700
          Re: string encryption David Brown <david.brown@hesbynett.no> - 2021-04-29 17:01 +0200

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