mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-15 02:48:11 +00:00
48 lines
1.2 KiB
Python
Executable File
48 lines
1.2 KiB
Python
Executable File
#!/usr/bin/env python3
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import sys
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from hashlib import blake2s
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FILE_T1 = "legacy/firmware/trezor.bin"
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FILE_T2 = "core/build/firmware/firmware.bin"
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T1_HEADER_MAGIC_OLD = b"TRZR"
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T1_HEADER_OLD_SIZE = 256
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T2_HEADER_MAGIC_VENDOR = b"TRZV"
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SIZE_T1 = (7 * 128 + 64) * 1024
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SIZE_T2 = 13 * 128 * 1024
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if len(sys.argv) > 2:
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filenames = sys.argv[2:]
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elif len(sys.argv) == 2:
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filenames = (FILE_T1, FILE_T2)
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else:
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print(f"Usage: {sys.argv[0]} HEX_CHALLENGE [FILE]...")
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print(f" HEX_CHALLENGE: a 0-32 byte challenge in hexadecimal")
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exit(1)
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for filename in filenames:
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try:
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data = open(filename, "rb").read()
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except FileNotFoundError:
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print(f"{filename} not found")
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continue
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offset = 0
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if data[:4] == T2_HEADER_MAGIC_VENDOR:
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size = SIZE_T2
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else:
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size = SIZE_T1
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if data[:4] == T1_HEADER_MAGIC_OLD:
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offset = T1_HEADER_OLD_SIZE
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if len(data) - offset > size:
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raise ValueError(filename, "too big")
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data = data[offset:] + b"\xff" * (size - len(data) + offset)
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challenge = bytes.fromhex(sys.argv[1])
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firmware_hash = blake2s(data, key=challenge).hexdigest()
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print(f"{filename}: {firmware_hash}")
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