So if we do that for the whole process, we get the following 48 81. 1235 And that gives us our first encoded block, which is 48 and 81. I'm just gonna do the 1st 1 for example 3 15 and multiply that Bye. Times are matrix e So we just do this for every block. And on the right, so encoded is just un encoded. So now to encode, we just multiply, we just multiply each block Bye. Want to see the full answer Check out a sample Q&A here. How do you decode a message What are the merits and drawbacks of this system. So this whole thing, our uncoated row matrices. Transcribed Image Text: We have the following encoding system: To encode a message you square it. So just pretend that these are all on the line. So five and zero and then we just have the last block which is s so so 19 and 15 and then the last two characters ar 15 and 14.

So spaces or zero, then we have an eight h and then we're moving on to the O and the M, so Oh, it's 15 and the M is 13 and then we have e and another space. Then we got to be careful because we have a space. So the first block is just the sea and the oh, so C is three and I was 15 and then we're just gonna keep going, then the than the M in the e are 13 and five. D'oh is using blocks of two, remembering the spaces, just writing the numbers that represent each letter. So to find our rope matrices, we need to figure out how long each block is and seeing how we have a two by two matrix here, we're gonna be splitting into blocks of two, so I only have two. So the first thing it wants to d'oh is this too, right? The uncoated row matrices. This question wants us to encrypt the following message using the encryption matrix it gives us right here.

How to encode a message using matrix