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core: ensure pubkeyhash/scripthash have the correct length (#220)

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Roman Zeyde 2019-06-11 15:34:58 +03:00 committed by Pavol Rusnak
parent 0e277dfcb0
commit 40bf2c5d2e
1 changed files with 2 additions and 1 deletions
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3
core/src/apps/wallet/sign_tx/scripts.py
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@ -31,6 +31,7 @@ def input_script_p2pkh_or_p2sh(
def output_script_p2pkh(pubkeyhash: bytes) -> bytearray: def output_script_p2pkh(pubkeyhash: bytes) -> bytearray:
ensure(len(pubkeyhash) == 20)
s = bytearray(25) s = bytearray(25)
s[0] = 0x76 # OP_DUP s[0] = 0x76 # OP_DUP
s[1] = 0xA9 # OP_HASH_160 s[1] = 0xA9 # OP_HASH_160
@ -43,7 +44,7 @@ def output_script_p2pkh(pubkeyhash: bytes) -> bytearray:
def output_script_p2sh(scripthash: bytes) -> bytearray: def output_script_p2sh(scripthash: bytes) -> bytearray:
# A9 14 <scripthash> 87 # A9 14 <scripthash> 87
ensure(len(scripthash) == 20)
s = bytearray(23) s = bytearray(23)
s[0] = 0xA9 # OP_HASH_160 s[0] = 0xA9 # OP_HASH_160
s[1] = 0x14 # pushing 20 bytes s[1] = 0x14 # pushing 20 bytes