103 lines
3.0 KiB
Python
Executable File
103 lines
3.0 KiB
Python
Executable File
#!/usr/bin/python3
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import hashlib
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import random
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import sys
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## That part was originally secrets.py --> now bcp is integrated into a single file program
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"""Generate cryptographically strong pseudo-random numbers suitable for
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managing secrets such as account authentication, tokens, and similar.
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See PEP 506 for more information.
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https://www.python.org/dev/peps/pep-0506/
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Amit nem hasznalok belole azt kivettem!
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Eredeti forras: https://raw.githubusercontent.com/python/cpython/3.7/Lib/secrets.py
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"""
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__all__ = ['choice', 'randbelow', 'randbits', 'SystemRandom',
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'token_bytes', 'token_hex', 'token_urlsafe',
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'compare_digest',
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]
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import base64
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import binascii
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import os
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from hmac import compare_digest
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from random import SystemRandom
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_sysrand = SystemRandom()
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randbits = _sysrand.getrandbits
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choice = _sysrand.choice
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DEFAULT_ENTROPY = 64 # number of bytes to return by default
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def token_bytes(nbytes=None):
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"""Return a random byte string containing *nbytes* bytes.
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>>> token_bytes(16) #doctest:+SKIP
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b'\\xebr\\x17D*t\\xae\\xd4\\xe3S\\xb6\\xe2\\xebP1\\x8b'"""
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if nbytes is None:
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nbytes = DEFAULT_ENTROPY
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return os.urandom(nbytes)
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def token_hex(nbytes=None):
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"""Return a random text string, in hexadecimal.
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>>> token_hex(16) #doctest:+SKIP
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'f9bf78b9a18ce6d46a0cd2b0b86df9da'"""
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return binascii.hexlify(token_bytes(nbytes)).decode('ascii')
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## End of integrated secrets.py
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# Az egyszeruseg kedveert, 1 tomb = 1 sor
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blokklanc_file = os.getenv("HOME") + "/.blokklanc.pp"
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# Eredet tomb letrehozasa ha nem letezik
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if not os.path.exists(blokklanc_file):
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# Genezis/eredet tomb letrehozasa randommal, hogy ha ugyan az is ket szoveg, soha ne ugyan az legyen a kimenetel
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eredet = "Eredet."
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erand = token_hex(64)
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etomb_adat = eredet + erand
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etomb_hash = hashlib.sha512(etomb_adat.encode('utf-8')).hexdigest()
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print("Initializing...")
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print("Origin block: " + str(etomb_adat) + '||' + etomb_hash)
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# beirni eredetet
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ask_for_write = input("Save the first block into " + blokklanc_file + "? [y/n] ")
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if ask_for_write != "y":
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sys.exit()
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f = open(blokklanc_file,'w')
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f.write(str(etomb_adat) + etomb_hash)
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f.close()
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# kiolvassa az utolso sort
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def utolso_sor():
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blokk_file = open(blokklanc_file,'r')
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for sor in blokk_file:
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fb_sor = sor
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print("Utolsó tömb: " + fb_sor)
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return fb_sor
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# hozzaad egy uj tombot
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def uj_tomb(tomb_adat):
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utolso_tomb_hash = utolso_sor()
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uj_tomb = hashlib.sha512(utolso_tomb_hash.encode('utf-8')).hexdigest() + '||' + tomb_adat + '||'
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uj_tomb_hash = hashlib.sha512(uj_tomb.encode('utf-8')).hexdigest()
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fu = open(blokklanc_file,'a')
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fu.write('\n' + uj_tomb + uj_tomb_hash)
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# ujraszamolja a blokklanc helyesseget
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def teljes_lanc_ellenorzes():
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pass
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teljes_lanc_ellenorzes()
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# Kovetkezo letrehozasa
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jegyzet = input("What do you want to add to the blockchain? ")
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uj_tomb(jegyzet)
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#print("Teszt: " + hashlib.sha512("teszt".encode('utf-8')).hexdigest())
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# cut -d '|' -f 3 blokklanc.pp | egrep -v "^Eredet."
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