def H_bytes(x):
assert len(x) == BLOCK_BYTES
state = pypy_sha256.sha_init()
state['data'] = words_to_bytes(bytes_to_words(x))
pypy_sha256.sha_transform(state)
return words_to_bytes(bytes_to_words(words_to_bytes(state['digest'])))
def H_bytes(x):
assert len(x) == BLOCK_BYTES, 'length should be {} but is {}'.format(BLOCK_BYTES, len(x))
state = pypy_sha256.sha_init()
state['data'] = words_to_bytes(bytes_to_words(x))
pypy_sha256.sha_transform(state)
return words_to_bytes(bytes_to_words(words_to_bytes(state['digest'])))
def H_bytes(x):
assert len(x) == BLOCK_BYTES
state = pypy_sha256.sha_init()
state['data'] = words_to_bytes(bytes_to_words(x))
pypy_sha256.sha_transform(state)
return words_to_bytes(bytes_to_words(words_to_bytes(state['digest'])))
import pypy_sha256
import sys
import textwrap
if len(sys.argv) != 2:
raise Exception(
'Need exactly 1 argument (0x-prefixed 64 bytes hex byte string)')
hex_input = sys.argv[1]
if len(hex_input) != 130:
raise Exception(
'Argument must be of length 130 characters ("0x" + 64 bytes, each as 2 hex digits'
)
if hex_input[:2] != '0x':
raise Exception('Argument must start with 0x')
input = [int(x, 16) for x in textwrap.wrap(hex_input[2:], 2)]
state = pypy_sha256.sha_init()
state['data'] = input
pypy_sha256.sha_transform(state)
digest = state['digest']
print('0x' + str.join('', [hex(word)[2:].zfill(8) for word in digest]))