Dryad help :)

[PB0_corse66]

Hi :)

 

Not sure to understand the Dryad part..

 

From the doc :

 

B) ENCRYPTION

The second mode is used to encrypt short numeric information. The coder arbitrarily

selects two letters at random. The first letter designates a row in the current active

page. The second one is used similarly to the authentication mode, except that the

letter immediately to the right is selected. This selected letter is called the "SET

LETTER.”

 

Example:

Challenging station: Set letter Mixe Foxtrot.

Reply: Delta.

 

Numbers are enciphered one digit at a time. A ciphertext letter is chosen from the

selected row (the row designated by the SET LETTER) in the column under the plain

text digit. If the digit occurs more than once in the number, the coder is instructed to

choose a different letter in the same column. All the digits in a single plaintext

number are encoded from the same row.

 

Example (for Set Letter Mike Foxtrot):

Challenging station: Set number Golf Mike Sierra Tango Hotel

Deciphered number: 2 4 6 6 2

 

 

 

This is here I don't get it ;)

 

So as far I've understood the first part, we select D as the selected Letter.

But if I look at the D row the :

Set number Golf Mike Sierra Tango Hotel

 

Rather deciphered into : 7 0 3 2 8

 

 

2 4 6 6 2 come directly from the first row (without any selected letter) ...

 

Not sure how it works ;)

[baltic_dragon]

Hey!

 

Sorry for my late reply, I've been away for some time.

 

So: the first part indeed is easier, Mike is the letter in the vertical column (so first horizontal letters would be CLUR). Then you look for letter F in that row (for Foxtrot). It is in the MN column, and says FD. You choose the letter immediately next to Foxtrot, so you have Delta.

 

Now the second part. If you are told Set Letter Mike Foxtrot for numbers, you do the same as above, but then use the first row with numbers directly BELOW the chosen Set Letter row. So in this case you will use the row between R and S. You read the letters from that red row, so you will get:

Golf = 2

Mike = 4

Sierra = 6

Tango = 6 (same field as Sierra)

Hotel = 2

 

Hope this helps!

[PB0_corse66]

Hi :)

 

 

Been away for a while as well ;)

 

Thanks for the answer :) but as being a little bit stubborn ^^ I'm going to raise 2 points which are puzzling me..

 

 

If you are told Set Letter Mike Foxtrot for numbers, you do the same as above, but then use the first row with numbers directly BELOW the chosen Set Letter row. So in this case you will use the row between R and S.

 

 

I'm told to set letter Mike Foxtrot, and answer being Delta, should not I choose the row BELOW line D so between F and G?

 

 

Which leads me to my second point :

I'm looking at the Dryad documentation and we have 4 lines with digit :

Above A (red), below F (black?), below L (red), below R (red).

 

 

I compare them and except for a slight version on the line below R on the digit 3 and 7 (which may be a typo), they are exactly the same...!!

 

 

Which seems a little bit odd to me to do some encoding / decoding if ABC always = 0 and DEF = 1, etc..

 

 

Is the documentation correct ?

 

 

Thanks again for the great campaign!

[PB0_corse66]

I'll try to make my point clearer :)

 

 

What are we using a complex method if all conversion between letters and digits are the same :) (and pretty obvious) ?

[baltic_dragon]

I'll get back to you ASAP :) I don't think it is that obvious - but I'll try to explain better as soon as I have a moment!

[baltic_dragon]

OK, I see your point now regarding the SET LETTER. I could have made the instructions clearer as it really sounds confusing now.

 

As for the decipher rows for numbers, I used the real life DRYAD example and for some reason it looks like this for this particular sheet. Perhaps by chance. Probably it wouldn't matter anyway, as the sheets would be changed quite often.

 

I'll see how I can make the instructions clearer & thanks for looking deeper into this.

[PB0_corse66]

Thanks a lot for your answer and for the superb campaign :) :)

 

 

I'm going to try mission 11 this week end :p Damn choppers ;)

[baltic_dragon]

I think it is the toughest one in the campaign. A few pointers in this thread. Let me know how it went!

[Xxx]

Hey guys, I think there may be some conflicting information here? Or at least, I am a little confused?

 

 

Re the Dryad cypher;

 

 

"Numbers are enciphered one digit at a time. A ciphertext letter is chosen from the

selected row (the row designated by the SET LETTER) in the column under the plain

text digit. If the digit occurs more than once in the number, the coder is instructed to

choose a different letter in the same column. All the digits in a single plaintext

number are encoded from the same row."

I read that to mean, using the example in the instructions, the set letter Mike + Foxtrot is Delta. Therefore the D, Delta row depicts the number Golf, Mike, Sierra, Tango, Hotel as; G=7, M=0, S=3, T=2, H=8. Not 2, 4, 6, 6, 2, as on the instruction card. That depicts what's on the top most line in red text. GHJ=2, MN=4, ST=6, ST=6, GHJ=2. Hence, 2, 4, 6, 6, 2. This is not how I understand the Dryad works, or the "Set Letter" cypher is meaningless, since we are always using the very top red letter row and ignoring the cyphers G to L, M to R and S to X.

If that's how we are to interpret the Dryad then its different from how I understand it.

Let me use the missions examples;

In mission 12, there are two Set Letter cyphers given, namely Set Letter RU and Set Letter GC.

Set Letter RU cypher is N. Set Letter cypher GC is W.

Given the cypher N for the first set of coordinates, then we read as follows from the N row;

K=5, I=7, G=7, U=0, S=8, W=3 H=1. Thus 5770831.

Given the cypher W for the second set of coordinates, then we read the following from the W row;

D=2, E=2, S=7, F=5, T=8, M=7, W=1. Thus 2275871.

These are the correct Dryad cypher numbers. But they are not Lat/long for our DCS map and incorrect for INS entry.

 

If we use just the top row of red letters, (cyphers A to F) then the above codes become;

 

K=3, I=3, G=2, U=7,S=6,W=8,H=2. Thus 3327682.

D=1, E=1, S=6, F=1, T=6, M=4,W=8. Thus 1161648. These are closer to the Bullseye coordinates given as 242 for 24?

Hope that clarifies things. For this mission if you just use the very top block of cyphers from A to F then the cords approximate to Max's position.

 

 

Regards

 

 

David

[baltic_dragon]

Yeah I think the description I used (from Wiki) is unclear, I plan to adjust the description so that there is no doubt on how to read that. Or maybe I misunderstood the whole thing when writing the script but at this stage the only option is to modify the docs and not the coordinates :)

[Xxx]

Roger that.

 

It's cool that in asking the wingman to confirm coords, he gives a range+bearing from Bullseye. Then you can set the rho and theta on the HSI and go right over Max! So you don't need to enter the coords in your INS.

 

Bit of a character that Max. I recall an RAF pilot who did an exchange with the French air Force and flew the Mirage with them for a while. He described the French fighter pilots as being just like Max. Praised them for being very aggressive and even a bit "gung ho"! But he loved the c. Bit different from the F3.

 

Regards

 

David

[swiss_lipo]

Hi everyone,

 

 

I tried to understand the DRYAD encryption and I believe there is a mistake in the example provided in the kneepad. Or it is me who is wrong, also very plausible!

 

 

 

The example tells us to go "Mike Foxtrot" and it gives us a SET LETTER of "Delta", which is correct to this point. (see picture)

 

 

 

But then, from what I understand from the DRYAD, we should STAY ON THE SAME ROW as the SET LETTER to choose our letters that will then point to the reference digits that are always the same. Otherwise, this SET LETTER has no real influence.

 

 

 

So, to obtain the code "2 4 6 6 2" we should actually provide the cypher text : "Victor Foxtrot Bravo Oscar Uniform", taken from the row where the SET LETTER was found.

 

 

This is my understanding but it would probably require the confirmation or correction from someone more qualified, an active or veteran pilot perhaps ?

 

 

Very interesting system anyway and quite a challenge to deal with while piloting.

Edited January 3, 2019 by swiss_lipo

[baltic_dragon]

Yes I think there is a mistake - which I forgot to correct but will do in the next few days. As Accipiter says, you can also ask wingman to give you bullseye coords to confirm you are in right position.

 

And as for Max - the guy doing the VOs added a lot of character his own extra lines. And he does have the AdA background :)

[baltic_dragon]

Hey guys, bringing back this old thread - I've checked it and I don't think there is a bug, although I agree that the instructions are not that clear.

 

To make it clearer: you are told set letter Mike Foxtrot, and it points you to DELTA.

 

You then look at the "D" (for Delta) Row and read the numbers using the first row containing them, so one between F and G. In this Dryad all rows with numbers are almost the same, which is a coincidence.

 

But for decyphering numbers, you don't look at DELTA row - but at the first row containing numbers that is below it. And then the numbers are right.

 

Hope it helps!

[alboon2000]

In this Dryad all rows with numbers are almost the same, which is a coincidence.

 

Hi Baltic,

 

Once again, congratulations for this amazing campaign, it's simply awsome.

 

Regarding Mission 12, I think you really could have another look at it as, I think, it's not playable without using the wingman's help.

 

First, it would be more interesting to use a DRYAD grid with different numbers (I mean : on the one provided, every red line is exactly the same, which seems to confuse a lot of people, as it becomes then pointless to have a SET LETTER.

 

Then, there is a problem within the mission :

SET LETTER N : KIGUSWH => 3327682, which are clearly not coordinates inside Bastille area, and there are 7 numbers instead of 6 so we can't put them in the INS...

SET LETTER W : DESFTMW => 1161648, this time it could be correct but i "think" it's still not within Bastille boundaries.

 

Thank you for reading me, I hope I was clear anough !

[blackactionedwin]

Finally passed previous mission and I am now challenged with this quest.

 

First I thought I was wrong with the DRYAD but I also got N3327682 and W1161648, which is more thann 200nm away from MAX. Lucky I am my wingman gave me distance and bearing from bullseye.

 

Unfortunately my wingman crashed and burned without any external force, just saying good-bye "I am out" or something like that (edit: Tacview showed that buddy crashed into mountains due to low level flight). So I had to go all by myself against the 2 bandits. The rest of the story is not very heroic. Have to fly it all over again :-/ but i like the raindrops at the beginning anyway.

Edited March 17, 2019 by blackactionedwin

[blackactionedwin]

Finally passed previous mission and I am now challenged with this quest.

 

First I thought I was wrong with the DRYAD but I also got N3327682 and W1161648, which is more thann 200nm away from MAX. Lucky I am my wingman gave me distance and bearing from bullseye.

 

Unfortunately my wingman crashed and burned without any external force, just saying good-bye "I am out" or something like that (edit: Tacview showed that buddy crashed into mountains due to low level flight). So I had to go all by myself against the 2 bandits. The rest of the story is not very heroic. Have to fly it all over again :-/ but i like the raindrops at the beginning anyway.

 

edit:

Mistake as so often on the user side. There is no typo in the number lines. First coordinate is N 372... not 332 "I=7" not 3 in this case!! Then the coordinates point you correctly towards MAX.

 

Unfortunately I still don´t manage to overcome those two bandits. Keep on trying :joystick:

[baltic_dragon]

Cool! If you hold long enough the cavalry should come to your help... :) oh, and make sure to tell Max that there is no helo picking him up ;)

[alboon2000]

edit:

"I=7" not 3 in this case!! Then the coordinates point you correctly towards MAX.

 

Thank you !

[SharpeXB]

Wow this is just impossible to understand! I’m going to just try to use the F10 map to show me where the pilot is :huh:

 

PS it’s possible to complete the mission without using DRYAD, just look for the flare Max shoots up. Ask your wingman for the offset from Bullseye but it’s not very far from WP4

Edited April 5, 2020 by SharpeXB

[Gabi_tro]

Like everything else ..this is buged right now. If I input those coordinates...it shows me I have to go in other direction for 120nm.

[baltic_dragon]

Wow this is just impossible to understand! I’m going to just try to use the F10 map to show me where the pilot is :huh:

 

PS it’s possible to complete the mission without using DRYAD, just look for the flare Max shoots up. Ask your wingman for the offset from Bullseye but it’s not very far from WP4

 

Yes, I built bullseye from wingman in just to help if Dryad was too difficult :) I don’t tkphink coordinates input is bugged, maybe problem with INS alignment?

[o-Tomcat-o]

edit:

Mistake as so often on the user side. There is no typo in the number lines. First coordinate is N 372... not 332 "I=7" not 3 in this case!! Then the coordinates point you correctly towards MAX.

 

Unfortunately I still don´t manage to overcome those two bandits. Keep on trying :joystick:

 

You still have 7 number instead of 6 for latitude coordonate ... there is something i really don't understand here.

[DimSim]

Just completed this mission, and enjoyed it. Did do the decode rather than just google the solution or radio wing man.

 

There is definitely a bug in this mission, as suggested above, the 1st coordinate cypher should be K,V,G,U,S,W,H (V, not I for 2nd number). This turns the 3 into 7 which makes the coordinates accurate.

 

The current documentation is understandable, though the 'Set number' was confusing. Another sentence describing that all letters in a 'set' such as 'G through L' use the same decoding top-of-set-row, might have helped. But once you follow the example and get the same result, it makes sense. (In fact the set is irrelevant as the code sheet has the same values for all sets, which BD noted.)

 

@VdK The fact there are 7 numbers instead of 6 for latitude is not important because the Mirage enters numbers in decimal minutes, so it simply ignores precision beyond the first 2 decimal places. It's not Minutes and Seconds.