mirror of
https://github.com/trezor/trezor-firmware.git
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35 lines
963 B
Python
Executable File
35 lines
963 B
Python
Executable File
#!/usr/bin/env python3
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# example usage: ./rng_entropy_collector.py stm32_rng_1.dat 1048576
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# note: for reading large amounts of entropy, compile a firmware
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# that has DEBUG_RNG == 1 as that will disable the user button
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# push confirmation
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from __future__ import print_function
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import io
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import sys
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from trezorlib.client import TrezorClient
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from trezorlib.transport import get_transport
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def main():
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try:
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client = TrezorClient(get_transport())
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except Exception as e:
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print(e)
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return
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arg1 = sys.argv[1] # output file
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arg2 = int(sys.argv[2], 10) # total number of how many bytes of entropy to read
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step = 1024 if arg2 >= 1024 else arg2 # trezor will only return 1KB at a time
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with io.open(arg1, 'wb') as f:
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for i in range(0, arg2, step):
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entropy = client.get_entropy(step)
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f.write(entropy)
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client.close()
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if __name__ == '__main__':
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main()
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