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79 lines
2.2 KiB
79 lines
2.2 KiB
4 years ago
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from trezor import utils, wire
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from trezor.crypto import base58
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from trezor.crypto.base58 import blake256d_32
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from apps.common.writers import empty_bytearray, write_bytes_fixed, write_uint64_le
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# A ticket purchase submission for an address hash.
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def output_script_sstxsubmissionpkh(addr: str) -> bytearray:
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try:
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raw_address = base58.decode_check(addr, blake256d_32)
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except ValueError:
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raise wire.DataError("Invalid address")
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w = empty_bytearray(26)
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w.append(0xBA) # OP_SSTX
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w.append(0x76) # OP_DUP
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w.append(0xA9) # OP_HASH160
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w.append(0x14) # OP_DATA_20
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write_bytes_fixed(w, raw_address[2:], 20)
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w.append(0x88) # OP_EQUALVERIFY
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w.append(0xAC) # OP_CHECKSIG
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return w
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# Ticket purchase change script.
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def output_script_sstxchange(addr: str) -> bytearray:
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try:
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raw_address = base58.decode_check(addr, blake256d_32)
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except ValueError:
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raise wire.DataError("Invalid address")
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w = empty_bytearray(26)
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w.append(0xBD) # OP_SSTXCHANGE
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w.append(0x76) # OP_DUP
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w.append(0xA9) # OP_HASH160
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w.append(0x14) # OP_DATA_20
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write_bytes_fixed(w, raw_address[2:], 20)
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w.append(0x88) # OP_EQUALVERIFY
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w.append(0xAC) # OP_CHECKSIG
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return w
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# Spend from a stake revocation.
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def output_script_ssrtx(pkh: bytes) -> bytearray:
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utils.ensure(len(pkh) == 20)
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s = bytearray(26)
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s[0] = 0xBC # OP_SSRTX
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s[1] = 0x76 # OP_DUP
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s[2] = 0xA9 # OP_HASH160
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s[3] = 0x14 # OP_DATA_20
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s[4:24] = pkh
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s[24] = 0x88 # OP_EQUALVERIFY
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s[25] = 0xAC # OP_CHECKSIG
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return s
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# Spend from a stake generation.
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def output_script_ssgen(pkh: bytes) -> bytearray:
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utils.ensure(len(pkh) == 20)
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s = bytearray(26)
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s[0] = 0xBB # OP_SSGEN
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s[1] = 0x76 # OP_DUP
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s[2] = 0xA9 # OP_HASH160
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s[3] = 0x14 # OP_DATA_20
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s[4:24] = pkh
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s[24] = 0x88 # OP_EQUALVERIFY
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s[25] = 0xAC # OP_CHECKSIG
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return s
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# Retrieve pkh bytes from a stake commitment OPRETURN.
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def sstxcommitment_pkh(pkh: bytes, amount: int) -> bytes:
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w = empty_bytearray(30)
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write_bytes_fixed(w, pkh, 20)
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write_uint64_le(w, amount)
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write_bytes_fixed(w, b"\x00\x58", 2) # standard fee limits
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return w
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