Introduction
Hello All proofer and students. This is @mousumimou. I read the lecture thoroughly for more than two time and now after getting the points, i am going to do my homework task about Hash and Cryptography for professor @pelon53.
Explain what does the resistance to collision mean? And what does resistance to preimage mean?
Resistance to collision
Resistance to Collision is defined as the "HASH" properties. Resistance to collision means that the input of two dissimilar data output cannot be the similar. Collision happen when two dissimilar inputs display similar hash. But in fact, collisions are much small like because of inputs are uncountable and the outputs are countable. Collision can be tried but it will need huge time and resources.
If you do little change in an imputed data, the outputs we will get an totally different hash. Resistance to Collision in simple term, is that a collision invasion is too much difficult although near illusory.It is mathematically impossible to find out two different inputs getting similar output.
Resistance to preimage
Resistance to preimage is the hindrance to find out what was the input data from the output hash. It is to much hard to find out the input from the hash output. Resistance to Preimage is one of the fundamental hash function properties and is a one way function, It is almost impossible to overturn. But if it is not impossible to do, but to do it with modern uttra-modern computers or supercomputer will take many time and need many resources. So it will not be incorrect to talk. It is impossible.
Tronscan hash last block and the latest transaction verifying.
To view the last block hash and latest transaction hash, you have to visit Tronscan at https://tronscan.org.
Now we view block lists and click on the last block
Click on the last block on the lists of blocks here the last block is number 31733602
It will display the block details, here the block hash is
0000000001e437626e6dcae08e5f9a8c59c82d1fc998eb60b79abb066ae4c431
Now click on the last transaction on the list of transaction to view the transaction details. The latest transaction hash
4fda88594a46755ded629f35081ddfd678734086d4a68bf031809c473644dc66u
The Etherscan last block hash and transaction verifying.
To verify etherscan last block hash and latest transaction hash, you have to visit https://etherscan.io and roll down, to see the last block.
The last block on etherscan is block number 12781452
Now click on the block to screen the block details.
Now the block details have been screen, the block hash is
0x9266f8b69ce9f6453080cea7a24bc43a9df680028cf454a9cd7f9faaf69bef74
Now click on transaction to view the latest transaction details
The transaction details have been screen , with a transaction hash
0x809804a8e72c6aa22fc7fcca00ecf4f679808476fbb4e23f2cd62d897f9a1912
3.- Generate the hash using SHA-256, from the word CryptoAcademy and from cryptoacademy. Screenshot required. Do you see any difference between the two words? Explain.
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An online password generator was used to generate the hash function of these two words using SHA256. https://passwordsgenerator.net/sha256-hash-generator/, CryptoAcademy and cryptoacademy.
CryptoAcademy
CryptoAcademy generated this hash function
D03CA34B258E6E0FD06B2070DDE61B50BD4EEF6161A8EDAA4A420C9AE1BEB7F9
Cryptoacademy
cryptoacademy generated this hashfunction
975779F41D5CB39C3B7C9A66C5DEF2D3ADD07BA7AB8DBE7AFE162FA8F3AC6657
Understand
Two is difference here when i write CrytoAcademy the hash code than i wrote Cryptoacademy both hash code is not similar. Really it is amazing for me and more secure and reliable
In your self words explain the difference between hash and cryptography.
Cryptography
Cryptography is a primary pillar of blockchain.
The main purpose is hiden the meaning behind data
Passwords need for cryptography
we say that all cryptographic is hash functions
Hash
The idea of hash in cryptocurrency is used to yields the output of a fixed length impartial of the length imputed data.
Hashes are used to make blocks in Blockchain and gives secrecy.
Generally it has a fixed value to represent the original data
No need Password for Hash
We says that all HASH is not cryptography
Conclusion
through done this the assignments by professor @pelon53 , and I have learnt about the blockchain technology with regards to hashing and cryptography and I’ve realized what necessary the world of cryptocurrencies. The assignment have really helped me acquire real world experience on how the two functions works similar and Alphabet word turn over alphanumeric.