CODEWITHSUNDEEP
pythonhexpycrypto
P. Wormer
P. Wormer

Reputation: 387

Two ways of printing a SHA-256 hash differ in 1 byte in Python

Consider the snippet:

from Cryptodome.Hash import SHA256
text = b'Jeanny'
print('Hash of', text)

hx = SHA256.new(text).hexdigest()
print(hx)

h = SHA256.new(text).digest()
[print('{0:x}'.format(h[i]), end = '' ) for i in range(0,len(h))]

It prints:

Hash of b'Jeanny'
f51c7dbd56cc25c565f7c7ef951b06121e87e34f2e3bb466e873a2518715fe50
f51c7dbd56cc25c565f7c7ef951b6121e87e34f2e3bb466e873a2518715fe50

Why is it that the second printed string of hex digits misses 0 in position 29?

Upvotes: 0

Views: 1411

Answers (1)

Ignacio Vazquez-Abrams
Ignacio Vazquez-Abrams

Reputation: 798884

Because it's trying to print "06", but you haven't told it to zero-fill the numbers.

Upvotes: 1

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