25 lines
684 B
Python
25 lines
684 B
Python
from ubinascii import hexlify
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from trezor.crypto.hashlib import sha256
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from trezor.utils import chunks, split_words
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from apps.common.hash_writer import HashWriter
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from apps.wallet.sign_tx.signing import write_varint
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def message_digest(coin, message):
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h = HashWriter(sha256)
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write_varint(h, len(coin.signed_message_header))
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h.extend(coin.signed_message_header)
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write_varint(h, len(message))
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h.extend(message)
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return sha256(h.get_digest()).digest()
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def split_message(message):
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try:
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m = bytes(message).decode()
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lines = split_words(m, 18)
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except UnicodeError:
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m = hexlify(message)
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lines = chunks(m, 16)
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return lines
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