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update the using of hashlib to meet the requirements of FIPS #214

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update the using of hashlib to meet the requirements of FIPS #214

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6 changes: 3 additions & 3 deletions ucsmsdk/ucsgenutils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -389,7 +389,7 @@ def get_md5_sum(filename):

import hashlib

md5_obj = hashlib.md5()
md5_obj = hashlib.md5(usedforsecurity=False)
file_handler = open(filename, 'rb')
for chunk in iter(lambda: file_handler.read(128 * md5_obj.block_size), b''):
md5_obj.update(chunk)
Expand All @@ -408,7 +408,7 @@ def get_sha_hash(input_string):

import hashlib

return hashlib.md5(input_string).digest()
return hashlib.sha256(input_string).digest()


def expand_key(key, clen):
Expand All @@ -422,7 +422,7 @@ def expand_key(key, clen):
x_key = []
seed = key
for i_cnt in range(blocks):
seed = hashlib.md5(key + seed).digest()
seed = hashlib.sha256(key + seed).digest()
x_key.append(seed)
j_str = ''.join(x_key)
return array('L', j_str)
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