Post by Ringo - Admin on May 6, 2018 4:48:06 GMT -7
When communicating with radios (Handhelds, vehicle mounted, or base stations) You need to keep in mind to maintain security of the content and transmission. Some ways to do that is my using certain types of antennas that propagate in certain ways, encryption, code words, short transmissions, etc
Omni Directional - Propagates/Transmits 360 degrees equally
Bi Directional - Propagates/Transmits 90 degrees to the axis, max radiation in two directions
Uni Directional - Propagates/Transmits max radiation in one direction
Ground - All antennas must have a ground for peak performance
Counter Poise - Is used with Horizontal Polarized Antennas (Di Pole, Slant V, etc)
Ground Screen - Is used with Vertically polarized Antennas (Long Whips, Vehicle)
Terrain Masking - Utilizing the natural terrain (mountina, Large Hill, Large building) to reflect or absorb you signal that is going away from your direction of transmitting. Always use terrain masking when transmitting your signal to eliminate enemy interception.
Encryption - Always encrypt your message using brevity code words or a onetime pad with tri-graph.
Duress Code Word - This is a pre planned code 5 letter code word that you place in a preplanned 5 letter group to let the distant station know you are under duress when transmitting this message. (if the enemy is forcing you to transmit a rescue signal). Some say only place it in the message when under duress and some say always place it in the message and then leave it out when in duress. I like the latter technique because it also designates the which team is transmitting the message, each team has a different Duress code word. The other issue is some say leave it in the clear (not encrypted), But I would encrypt it like your whole message. This way if it is intercepted there is not a starting point to decipher the message.
Tri-Graph - Is a chart of letters systematically place in rows and lines to use as a tool to encrypt and decrypt a message. By utilizing the 26 letters of the alphabet, you can reuse it with different one time pads. It is tool for the tool box.
Number encrypting - The way you encrypt a set of numbers is by spelling them out or using your Tri Graph and designating where the number 0 begins (always use zero before the 1). So if you designate the number 0 begins at the letter "H" ( along left side) then 9 will be "Q" (Along left side) . See One time pad and Tri graph examples to see how to use tri graph with a onetime pad (5 letter group). You can also use a word or words like “BLACKHORSE” or "PATHFINDER” to encrypt the numbers as long as there is no repeating letters and you designate where the zero begins. Note - Always designate where the "0" will start, this can be changed up for each mission. You then will use that letter to encrypt it with the tri-graph and onetime pad (book). A good TTP is proceed and follow any numbers like grid coordinates with double xx.
Duress Codeword - So the trigraph is just a tool to encrypt and decrypt the messages. The message is useless with out the proper "key" (one time pad). You have to encrypt each letter of your message one at a time, spell out any number. (six oclock) We added a security precaution by applying a duress codeword. This codeword was placed in the message at a certain group. It was there at all times. This let the company know that everything was all right. If you became captured and the enemy was forcing you to send another message, you would leave that codeword out (the message would look normal to them) and the company knew right away that you were under duress and to disregard that message.
Improvised One Time Pad - One option for an improvised One Time Pad is, since making a randomized one time pad is very time consuming, you can use two same books, novels etc. You would need to establish which page that you you use for each message. You can make a matrix to let you know to use page 234 on the 23rd day of the month. So for each day you use a different page (or even a certain line/paragraph of that page).
"Adaptive Strategies for an Uncertain Future”
Cibolo Creek Tactical
"Who will Teach the Wisdom.”
Timothy G. Bax (Selous Scouts)
Omni Directional - Propagates/Transmits 360 degrees equally
Bi Directional - Propagates/Transmits 90 degrees to the axis, max radiation in two directions
Uni Directional - Propagates/Transmits max radiation in one direction
Ground - All antennas must have a ground for peak performance
Counter Poise - Is used with Horizontal Polarized Antennas (Di Pole, Slant V, etc)
Ground Screen - Is used with Vertically polarized Antennas (Long Whips, Vehicle)
Terrain Masking - Utilizing the natural terrain (mountina, Large Hill, Large building) to reflect or absorb you signal that is going away from your direction of transmitting. Always use terrain masking when transmitting your signal to eliminate enemy interception.
Encryption - Always encrypt your message using brevity code words or a onetime pad with tri-graph.
Duress Code Word - This is a pre planned code 5 letter code word that you place in a preplanned 5 letter group to let the distant station know you are under duress when transmitting this message. (if the enemy is forcing you to transmit a rescue signal). Some say only place it in the message when under duress and some say always place it in the message and then leave it out when in duress. I like the latter technique because it also designates the which team is transmitting the message, each team has a different Duress code word. The other issue is some say leave it in the clear (not encrypted), But I would encrypt it like your whole message. This way if it is intercepted there is not a starting point to decipher the message.
Tri-Graph - Is a chart of letters systematically place in rows and lines to use as a tool to encrypt and decrypt a message. By utilizing the 26 letters of the alphabet, you can reuse it with different one time pads. It is tool for the tool box.
Number encrypting - The way you encrypt a set of numbers is by spelling them out or using your Tri Graph and designating where the number 0 begins (always use zero before the 1). So if you designate the number 0 begins at the letter "H" ( along left side) then 9 will be "Q" (Along left side) . See One time pad and Tri graph examples to see how to use tri graph with a onetime pad (5 letter group). You can also use a word or words like “BLACKHORSE” or "PATHFINDER” to encrypt the numbers as long as there is no repeating letters and you designate where the zero begins. Note - Always designate where the "0" will start, this can be changed up for each mission. You then will use that letter to encrypt it with the tri-graph and onetime pad (book). A good TTP is proceed and follow any numbers like grid coordinates with double xx.
Duress Codeword - So the trigraph is just a tool to encrypt and decrypt the messages. The message is useless with out the proper "key" (one time pad). You have to encrypt each letter of your message one at a time, spell out any number. (six oclock) We added a security precaution by applying a duress codeword. This codeword was placed in the message at a certain group. It was there at all times. This let the company know that everything was all right. If you became captured and the enemy was forcing you to send another message, you would leave that codeword out (the message would look normal to them) and the company knew right away that you were under duress and to disregard that message.
Improvised One Time Pad - One option for an improvised One Time Pad is, since making a randomized one time pad is very time consuming, you can use two same books, novels etc. You would need to establish which page that you you use for each message. You can make a matrix to let you know to use page 234 on the 23rd day of the month. So for each day you use a different page (or even a certain line/paragraph of that page).
"Adaptive Strategies for an Uncertain Future”
Cibolo Creek Tactical
"Who will Teach the Wisdom.”
Timothy G. Bax (Selous Scouts)