Reply
Nov 21 2006
By: puddlejumper1391 Treasure Hunter 6649 posts
Offline

9th grade homework help: encoding & decoding using a key matrix

17 replies 8 views Edited Nov 21, 2006
Okay, I basically need to:
"Convert letters to numbers using the replacement code of A=1, B=2, C=3... Y=25, Z=26, =0.
Using a 2 by 2 key matrix, encrypt your message"

I've gotten to the point where I (for example) have:

o(15) v(22) e(05) r(18) a(01) c(03) h(08) i(09) e(05) v(22) e(05) r(18)

152205180103080905220518

Now, what do I do with it? Am I supposed to use each number and multiply (scale) it by the martix and find the determinant or what...? I just have no idea. M book says nothing, and I can't really find anything on google. If anyone knows or has any helpul links, it would be great. This is due next Tuesday, but I need to get it done by this Wedneday. Alright, thanks.
Message 1 of 18 (8 Views)
Reply
0 Likes
I Only Post Everything
Registered: 10/31/2006
Offline
1081 posts
 

Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006
Ah, i use to do this in 8th grade.

WhiteClouds
Message 2 of 18 (8 Views)
Reply
0 Likes
I Only Post Everything
Registered: 03/21/2005
Offline
1012 posts
 

Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006
I just had this HW too, although I had it in the form of a project.

What we had to do was take the numbers and put them in groups of matricies, then multiply each of those by the "key" matrix.

-------------------

PS3 || Currently Playing: WarHawk
Message 3 of 18 (8 Views)
Reply
0 Likes
Wastelander
Registered: 10/05/2006
Offline
847 posts
 

Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


overachiever wrote:
Okay, I basically need to:
"Convert letters to numbers using the replacement code of A=1, B=2, C=3... Y=25, Z=26, =0.
Using a 2 by 2 key matrix, encrypt your message"

I've gotten to the point where I (for example) have:

o(15) v(22) e(05) r(18) a(01) c(03) h(08) i(09) e(05) v(22) e(05) r(18)

152205180103080905220518

Now, what do I do with it? Am I supposed to use each number and multiply (scale) it by the martix and find the determinant or what...? I just have no idea. M book says nothing, and I can't really find anything on google. If anyone knows or has any helpul links, it would be great. This is due next Tuesday, but I need to get it done by this Wedneday. Alright, thanks.



Matrices are




so can you at least bother to do this?
"I loooove you, but what are we going to do?."Ike Turner is the man.
olvidala mejor olvidala,
arrancala de ti que ya tiene otro amor
olvidala mejor olvidala,
arrancala de ti ve y busca otra ilusion

es que no dejan los recuerdos
si yo le ense��e a amar, fui su primer amor
no sale de mi pensamiento
aun ella vive aqui dentro del corazon
Message 4 of 18 (8 Views)
Reply
0 Likes
Treasure Hunter
Registered: 03/01/2006
Offline
6056 posts
 

Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006
Im not sure because the student teacher lost me durring this already this year, but I think you multiply them by your scale and leave them in 1 x 2 matrices.  I really don't know though.
Message 5 of 18 (8 Views)
Reply
0 Likes
Wastelander
Registered: 10/05/2006
Offline
847 posts
 

Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


-RKO- wrote:
I just had this HW too, although I had it in the form of a project.

What we had to do was take the numbers and put them in groups of matricies, then multiply each of those by the "key" matrix. Shade knows this


yep but he is making it so confusing though .

"I loooove you, but what are we going to do?."Ike Turner is the man.
olvidala mejor olvidala,
arrancala de ti que ya tiene otro amor
olvidala mejor olvidala,
arrancala de ti ve y busca otra ilusion

es que no dejan los recuerdos
si yo le ense��e a amar, fui su primer amor
no sale de mi pensamiento
aun ella vive aqui dentro del corazon
Message 6 of 18 (8 Views)
Reply
0 Likes
Treasure Hunter
Registered: 03/01/2006
Offline
6056 posts
 

Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


-ShaDe- wrote:


overachiever wrote:
Okay, I basically need to:
"Convert letters to numbers using the replacement code of A=1, B=2, C=3... Y=25, Z=26, =0.
Using a 2 by 2 key matrix, encrypt your message"

I've gotten to the point where I (for example) have:

o(15) v(22) e(05) r(18) a(01) c(03) h(08) i(09) e(05) v(22) e(05) r(18)

152205180103080905220518

Now, what do I do with it? Am I supposed to use each number and multiply (scale) it by the martix and find the determinant or what...? I just have no idea. M book says nothing, and I can't really find anything on google. If anyone knows or has any helpul links, it would be great. This is due next Tuesday, but I need to get it done by this Wedneday. Alright, thanks.



Matrices are




so can you at least bother to do this?


You messed it up, noob.  He is using a 2 x 2 matrix (most likely) and then it would leave them in 1 x 2 matrices, not 1 x 3.
Message 7 of 18 (8 Views)
Reply
0 Likes
Keyblade Wielder
Registered: 04/20/2005
Offline
10305 posts
 

Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


overachiever wrote:
Okay, I basically need to:
"Convert letters to numbers using the replacement code of A=1, B=2, C=3... Y=25, Z=26, =0.
Using a 2 by 2 key matrix, encrypt your message"

I've gotten to the point where I (for example) have:

o(15) v(22) e(05) r(18) a(01) c(03) h(08) i(09) e(05) v(22) e(05) r(18)

152205180103080905220518

Now, what do I do with it? Am I supposed to use each number and multiply (scale) it by the martix and find the determinant or what...? I just have no idea. M book says nothing, and I can't really find anything on google. If anyone knows or has any helpul links, it would be great. This is due next Tuesday, but I need to get it done by this Wedneday. Alright, thanks.


.

WAIT A MINUTE LMAO NEVERMIND...that says overachiever...thats your name...lmao




Message Edited by swattkidd on 11-20-2006 05:39 PM

Message Edited by swattkidd on 11-20-2006 05:41 PM
Message 8 of 18 (8 Views)
Reply
0 Likes
Treasure Hunter
Registered: 07/05/2005
Offline
6649 posts
 

Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006
OHHHHHHHHHHHH!!!! overacheiver sees now! So, we divide them up like that and then multiply. That's what I thought it might have been, but I wasn't really sure. Then we just leave the matrix that we get raw? (and then decode it again on a seperate sheet of paper for the other fourth of the project); Okay, thanks alot.

By the way, mine was a project too. Maybe we're in the same school system. AACPS?

-RKO- wrote:
I just had this HW too, although I had it in the form of a project.

What we had to do was take the numbers and put them in groups of matricies, then multiply each of those by the "key" matrix.



Message 9 of 18 (8 Views)
Reply
0 Likes
Wastelander
Registered: 10/05/2006
Offline
847 posts
 

Re: 9th grade homework help: encoding & decoding using a key matrix

Nov 21, 2006


Im confused. wrote:


-ShaDe- wrote:


overachiever wrote:
Okay, I basically need to:
"Convert letters to numbers using the replacement code of A=1, B=2, C=3... Y=25, Z=26, =0.
Using a 2 by 2 key matrix, encrypt your message"

I've gotten to the point where I (for example) have:

o(15) v(22) e(05) r(18) a(01) c(03) h(08) i(09) e(05) v(22) e(05) r(18)

152205180103080905220518

Now, what do I do with it? Am I supposed to use each number and multiply (scale) it by the martix and find the determinant or what...? I just have no idea. M book says nothing, and I can't really find anything on google. If anyone knows or has any helpul links, it would be great. This is due next Tuesday, but I need to get it done by this Wedneday. Alright, thanks.



Matrices are




so can you at least bother to do this?


You messed it up, noob.  He is using a 2 x 2 matrix (most likely) and then it would leave them in 1 x 2 matrices, not 1 x 3.


sigh Did you even bother to see this was an example for him to use the but oh well whatever rows your boat.


Message Edited by -ShaDe- on 11-20-2006 05:44 PM
"I loooove you, but what are we going to do?."Ike Turner is the man.
olvidala mejor olvidala,
arrancala de ti que ya tiene otro amor
olvidala mejor olvidala,
arrancala de ti ve y busca otra ilusion

es que no dejan los recuerdos
si yo le ense��e a amar, fui su primer amor
no sale de mi pensamiento
aun ella vive aqui dentro del corazon
Message 10 of 18 (8 Views)
Reply
0 Likes