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change hasing from md5 to SHA256 #26

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change hasing from md5 to SHA256 #26

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18 changes: 9 additions & 9 deletions dnnlib/tflib/custom_ops.py
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Original file line number Diff line number Diff line change
Expand Up @@ -97,10 +97,10 @@ def get_plugin(cuda_file):
print('Setting up TensorFlow plugin "%s": ' % cuda_file_base, end='', flush=True)
try:
# Hash CUDA source.
md5 = hashlib.md5()
sha256 = hashlib.sha256()
with open(cuda_file, 'rb') as f:
md5.update(f.read())
md5.update(b'\n')
sha256.update(f.read())
sha256.update(b'\n')

# Hash headers included by the CUDA code by running it through the preprocessor.
if not do_not_hash_included_headers:
Expand All @@ -115,8 +115,8 @@ def get_plugin(cuda_file):
for ln in f:
if not ln.startswith(b'# ') and not ln.startswith(b'#line '): # ignore line number pragmas
ln = ln.replace(bad_file_str, good_file_str)
md5.update(ln)
md5.update(b'\n')
sha256.update(ln)
sha256.update(b'\n')

# Select compiler options.
compile_opts = ''
Expand All @@ -132,13 +132,13 @@ def get_plugin(cuda_file):
nvcc_cmd = _prepare_nvcc_cli(compile_opts)

# Hash build configuration.
md5.update(('nvcc_cmd: ' + nvcc_cmd).encode('utf-8') + b'\n')
md5.update(('tf.VERSION: ' + tf.VERSION).encode('utf-8') + b'\n')
md5.update(('cuda_cache_version_tag: ' + cuda_cache_version_tag).encode('utf-8') + b'\n')
sha256.update(('nvcc_cmd: ' + nvcc_cmd).encode('utf-8') + b'\n')
sha256.update(('tf.VERSION: ' + tf.VERSION).encode('utf-8') + b'\n')
sha256.update(('cuda_cache_version_tag: ' + cuda_cache_version_tag).encode('utf-8') + b'\n')

# Compile if not already compiled.
bin_file_ext = '.dll' if os.name == 'nt' else '.so'
bin_file = os.path.join(cuda_cache_path, cuda_file_name + '_' + md5.hexdigest() + bin_file_ext)
bin_file = os.path.join(cuda_cache_path, cuda_file_name + '_' + sha256.hexdigest() + bin_file_ext)
if not os.path.isfile(bin_file):
if verbose:
print('Compiling... ', end='', flush=True)
Expand Down