Experiment: Randomly Create Palindromic Mnemonic in new Python File

[hatgit]

Edit the .py file mentioned further below that will run if/then loop statements while generating random mnemonics until a valid palindromic one is found. Additional reference:
gitcoinambassadors/ideas#2

Required Steps:

1. generate a valid mnemonic randomly using the tool (and note the values of bit position 8,9,10 & 11, which are the last four bits of the first word or first group of 11-bits from the left)
2. put the words into reverse order, then translate them back into groups of 11 bits,
3. SHA256 hash the first 128 bits (not 132) as a bytearray and compute the 4-bit checksum,
4. check if the checksum matches the leftover 4 bits from prior step which should match the last four bits of the first group noted in step 1. If they match, a mnemonic is palindromic and should be valid both as a little endian and big endian format. If no match, the program should loop back and repeat steps 1-4.

The file to use as a basis for this experiment is: https://github.com/hatgit/BIP39_mnemonic_creation_light_python/blob/master/Palindromic_Mnemonic_experiment.py

Example of steps that didn't lead to a palindromic mnemonic and should loop over again:

Initial entropy plus checksum:
01101000111011011100101111010001001110011111011000101111101011011010111011011011011000111110000001011001100010000101110111110101 +0110
11-bit groups (note the last 4 bits of first group):

['01101000111', '01101110010', '11110100010', '01110011111', '01100010111', '11010110110', '10111011011', '01101100011', '11100000010', '11001100010', '00010111011', '11101010110']
Index values of words:
[839, 882, 1954, 927, 791, 1718, 1499, 867, 1794, 1634, 187, 1878]
happy hour violin initial glass strategy rocket hockey theory slush blast turn

Putting the above mnemonic into reverse:

turn blast slush theory hockey rocket strategy glass initial violin hour happy

Extract first 128 bits and compute checksum:

111010101100001011101111001100010111000000100110110001110111011011110101101100110001011101110011111111101000100110111001001101000111 +1100

checksum didn't match:

['11101010110', '00010111011', '11001100010', '11100000010', '01101100011', '10111011011', '11010110110', '01100010111', '01110011111', '11110100010', '01101110010', '01101001100'] <— checksum here of 1100 would have had to been 0111, in order for the mnemonic to have been palindromic (not its entropy) where last word would have been "happy" and not "hat".

[1878, 187, 1634, 1794, 867, 1499, 1718, 791, 927, 1954, 882, 844]
turn blast slush theory hockey rocket strategy glass initial violin hour hat

Repeat all steps until a match is found.

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Issue Status: 1. Open 2. Started 3. Submitted 4. Done

Work for 0.5 ETH (59.4 USD @ $118.79/ETH) has been submitted by:

1. @pumpkingwok

@hatgit please take a look at the submitted work:

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