Help Me With Validate Sign Presentation

Help Me With Validate Sign Presentation

in this video I will explain how a signature is created and validated before I explained how a signature in a bundle is created and validated it is important to understand how iota addresses are calculated in iota tutorial 9.1 I have explained in detail how the key digests and address are created here is a short explanation the key also known as the private key is generated using the seed index number and security level the index number is an integer and every address has a corresponding index number which means address 0 has index number 0 address one has index number 1 address 3 has index number 3 etc this is the generated key the generated key is divided in segments of 81 threads each each square is a segments and each segment consists of 81 threads if you have selected security level 1 you will have 27 segments if you have selected security level 2 you will have 54 segments and if you have selected security level 3 you will have 81 segments each segment is hash 26 times twenty-seven segments together forms a key fragment this is one key fragment this is one key fragment and this is one key fragment and each key fragment is hashed one time to create the digest here is also a key fragment which is has one time to create the digest here is also a key fragment which is hashed one time to create the digest depending on the selected security level one two or three digests are combined together so security level one you only have one digest and you has it one time to get the address if you have selected security level two you combine this digest and this digest together hash them one time to get the address and if you have selected security level three you take this digest this digest at this time just together hash at one time to get the address please remember to create an address you start hashing the segment's 26 times now let's see how a signature is created this is the key this is called the signature fragment and this is called the key fragment as mentioned earlier thus generated key is divided in segments of 81 tried each dependent on the selected security level you will have 2754 segments or 81 segments to create a signature you first calculate the normalized bundle hash the bubble hash is explained in iota tutorial 15 and the normalized bundle hash is explained in iota tutorial 16 these values represents the number of times each segments need to be hashed this segment needs to be hashed and 5 times this segments needs to be hashed 20 times etc let's see what these values are let's assume this is our bundle hairs with a total size of 81 threads this is a block of 27 tried this is another block of twenty-seventh rights and this is not a block of 27th...