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Showing posts with label Initialization Vectors. Show all posts
Showing posts with label Initialization Vectors. Show all posts
4 December 2024

256-bit IVs & 0xD1E221E1 sequence

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Just a quick note to observe that bitstreams using (alleged) 256-bit Initialization Vectors (IV) encryption have the same 32-bit/4-byte sequ...
30 March 2023

S-4538/110A transfers using 256-bit Initialization Vectors (2)

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Recently I analyzed an interesting recording sent me by my friend Mike (mco) some days ago; for clarity, the transmission was recorded on 80...
3 February 2022

a curious STANAG-4285 transmission

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Really curious STANAG-4285 transmission sent me by my friend IK1YDE Andrea who was the first to spot and analyze the signal. The oddity is t...
3 November 2021

again about crypto devices with (5x) 128-bit Initialization Vectors

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Recently in the list of the UDXF group a log of the UTE listener howardhawks (HH) appeared about transmissions of the Royal Navy of Oman (R...
7 July 2021

unid STANAG-4539 3200bps bursts

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Interesting and unid STANAG-4539 bursts recorded on 5270.0 KHz/usb. The user data rate is 3200 bps and is obtained using QPSK modulation, sh...
11 December 2020

unid 216-bit Initialization Vectors

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  Interesting MIL 188-110A segments which transport encrypted data. The bitstreams corresponding to the eigth segments - after 110A removal ...
30 November 2020

unid 200Bd/400 MFSK-4

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Yet another interesting signal sent me by my friend Eddy from Australia. The transmission has been recorded on 16320.0 KHz/USB at 0520Z and ...
12 October 2020

STANAG-4538 to forward 188-220 App.D (SINCGARS) Tx frames to HF

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6898 KHz/USB seems to be a good place to catch transmissions which deal with STANAG-4538 3G-HF and COMSEC. After the 256-bit Initialization ...
28 September 2020

S-4538/110A transmissions using (unid) 256-bit IV encryption

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While monitoring the 6 MHz band looking for the 48KBd "monster", I ran into some STANAG-4538 "circuit mode service" tran...
11 September 2020

110-220Bd/330 FSK, TMS-430/TC-535 (Swiss Army)

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I56578, cryptomaster This is the well-known Swiss Army 220Bd/330 FSK system consisting of the Telematik-Set 430 (TMS-430) [1] in combi...
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13 January 2020

COMSEC transmissions using a S4285 variant (2)

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Secured burst transmission using a modified S4285 waveform [1] spotted around midnight on 4015 KHz/usb, the S4285 mode is 600bps and shor...
13 March 2019

use of uuencode for email attachments (Swiss-Mil)

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This post is an update, mostly a deepening, of the posts published  here and  here with regards to the way of sending email used by Swis...
3 September 2018

LINK-11 SLEW, transmission format

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The SLEW waveform transmission format consists of an acquisition preamble followed by two or more fields, each field followed by a rein...