Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
| From | Colin <a@b.com> |
|---|---|
| Newsgroups | sci.crypt |
| Subject | Re: CHAL2X |
| Date | 2021-09-27 19:11 +1300 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <sirnb7$sla$1@gioia.aioe.org> (permalink) |
| References | (4 earlier) <sip27f$pk2$1@dont-email.me> <sippop$1ntf$1@gioia.aioe.org> <sipqp0$n4l$1@dont-email.me> <sipu37$1kbj$1@gioia.aioe.org> <sipupa$kk8$1@dont-email.me> |
If the plaintext length is a multiple of the key length then you have problems eg keylength = 16, plaintext length = 4096 $ hexdump -C p.txt 00000000 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 61 |aaaaaaaaaaaaaaaa| * 00001000 $ hexdump -C key 00000000 30 31 32 33 34 35 36 37 38 39 61 62 63 64 65 66 |0123456789abcdef| 00000010 $ ./cdx4 p.txt c.bin key 1 ................ $ hexdump -C c.bin 00000000 29 88 64 2a 2a a2 55 5b 41 cb 57 72 ad 77 f1 25 |).d**.U[A.Wr.w.%| * 00001000 therefore apply kasiski and freq analysis as you have a Polyalphabetic cipher
Back to sci.crypt | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-23 16:34 +0100
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-25 19:45 +0200
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-25 19:04 +0100
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-25 20:08 +0200
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-25 23:03 +0200
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-25 22:14 +0100
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-26 00:53 +0200
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 06:59 +0100
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-26 14:40 +0200
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 13:58 +0100
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-26 15:54 +0200
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 15:06 +0100
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-26 17:11 +0200
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 16:53 +0100
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 17:12 +0100
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-26 18:42 +0200
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 18:27 +0100
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-26 20:43 +0200
Re: CHAL2X Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-09-26 20:41 +0100
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-26 21:46 +0200
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 20:57 +0100
Re: CHAL2X Stefan Claas <spam.trap.usenet@gmail.com> - 2021-09-26 13:19 -0700
Re: CHAL2X Max <maxturv26@gmx.net> - 2021-09-26 22:30 +0200
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 21:37 +0100
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 21:33 +0100
Re: CHAL2X Stefan Claas <spam.trap.usenet@gmail.com> - 2021-09-26 13:39 -0700
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-26 20:53 +0100
Re: CHAL2X Colin <a@b.com> - 2021-09-27 19:11 +1300
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-27 07:41 +0100
Re: CHAL2X Colin <a@b.com> - 2021-09-27 20:02 +1300
Re: CHAL2X Richard Heathfield <rjh@cpax.org.uk> - 2021-09-27 08:27 +0100
Re: CHAL2X Colin <a@b.com> - 2021-09-28 20:09 +1300
csiph-web