def Decode(hrp: str, addr: str) -> bytes:
""" Decode from Atom Bech32.
Args:
hrp (str) : Human readable part
addr (str): Address
Returns:
bytes: Data
Raises:
Bech32FormatError: If the bech32 string is not valid
Bech32ChecksumError: If the checksum is not valid
"""
# Decode string
hrpgot, data = AtomBech32Decoder._DecodeBech32(
addr, AtomBech32Const.SEPARATOR, AtomBech32Const.CHECKSUM_LEN)
# Check HRP
if hrpgot != hrp:
raise Bech32FormatError(
"Invalid format (HRP not valid, expected %s, got %s)" %
(hrp, hrpgot))
# Convert back from base32
conv_data = Bech32BaseUtils.ConvertFromBase32(data)
# Check converted data
if len(conv_data) < AtomBech32Const.DATA_MIN_LEN or len(
conv_data) > AtomBech32Const.DATA_MAX_LEN:
raise Bech32FormatError("Invalid format (length not valid)")
return ConvUtils.ListToBytes(conv_data)
def Decode(cls, hrp: str, addr: str) -> bytes:
"""
Decode from Bech32.
Args:
hrp (str) : Human readable part
addr (str): Address
Returns:
bytes: Decoded address
Raises:
ValueError: If the bech32 string is not valid
Bech32ChecksumError: If the checksum is not valid
"""
# Decode string
hrp_got, data = cls._DecodeBech32(addr, Bech32Const.SEPARATOR,
Bech32Const.CHECKSUM_STR_LEN)
# Check HRP
if hrp != hrp_got:
raise ValueError(
f"Invalid format (HRP not valid, expected {hrp}, got {hrp_got})"
)
# Convert back from base32
return BytesUtils.FromList(Bech32BaseUtils.ConvertFromBase32(data))
def Decode(hrp, addr):
""" Decode from Segwit Bech32.
Args:
hrp (str) : Human readable part
addr (str): Address
Returns:
tuple: Witness version (index 0) and witness program (index 1)
Raises:
SegwitBech32FormatError: If the address is not valid
Bech32FormatError: If the bech32 string is not valid
Bech32ChecksumError: If the checksum is not valid
"""
# Decode string
hrpgot, data = SegwitBech32Decoder._DecodeBech32(addr, SegwitBech32Const.SEPARATOR, SegwitBech32Const.CHECKSUM_LEN)
# Check HRP
if hrpgot != hrp:
raise SegwitBech32FormatError("Invalid segwit format (HRP not valid, expected %s, got %s)" % (hrp, hrpgot))
# Convert back from base32
conv_data = Bech32BaseUtils.ConvertFromBase32(data[1:])
# Check converted data
if len(conv_data) < SegwitBech32Const.DATA_MIN_LEN or len(conv_data) > SegwitBech32Const.DATA_MAX_LEN:
raise SegwitBech32FormatError("Invalid segwit format (length not valid)")
elif data[0] > SegwitBech32Const.WITNESS_VER_MAX_VAL:
raise SegwitBech32FormatError("Invalid segwit format (witness version not valid)")
elif data[0] == 0 and not len(conv_data) in SegwitBech32Const.WITNESS_VER_ZERO_DATA_LEN:
raise SegwitBech32FormatError("Invalid segwit format (length not valid)")
return (data[0], ConvUtils.ListToBytes(conv_data))
def Decode(hrp, addr):
""" Decode from Bitcoin Cash Bech32.
Args:
hrp (str) : Human readable part
addr (str): Address
Returns:
tuple: Net version (index 0) and data (index 1)
Raises:
BchBech32FormatError: If the address is not valid
Bech32FormatError: If the bech32 string is not valid
Bech32ChecksumError: If the checksum is not valid
"""
# Decode string
hrpgot, data = BchBech32Decoder._DecodeBech32(
addr, BchBech32Const.SEPARATOR, BchBech32Const.CHECKSUM_LEN)
# Check HRP
if hrpgot != hrp:
raise BchBech32FormatError(
"Invalid BCH format (HRP not valid, expected %s, got %s)" %
(hrp, hrpgot))
# Convert back from base32
conv_data = Bech32BaseUtils.ConvertFromBase32(data)
# Check converted data
if len(conv_data) < BchBech32Const.DATA_MIN_LEN or len(
conv_data) > BchBech32Const.DATA_MAX_LEN:
raise BchBech32FormatError("Invalid BCH format (length not valid)")
return (conv_data[0], ConvUtils.ListToBytes(conv_data[1:]))
def Decode(cls, hrp: str, addr: str) -> Tuple[int, bytes]:
"""
Decode from Segwit Bech32.
Args:
hrp (str) : Human readable part
addr (str): Address
Returns:
tuple[int, bytes]: Witness version (index 0) and witness program (index 1)
Raises:
Bech32ChecksumError: If the checksum is not valid
ValueError: If the bech32 string is not valid
"""
# Decode string
hrp_got, data = cls._DecodeBech32(addr, SegwitBech32Const.SEPARATOR,
SegwitBech32Const.CHECKSUM_BYTE_LEN)
# Check HRP
if hrp != hrp_got:
raise ValueError(
f"Invalid format (HRP not valid, expected {hrp}, got {hrp_got})"
)
# Convert back from base32 (remove witness version)
conv_data = Bech32BaseUtils.ConvertFromBase32(data[1:])
# Check data length
if (len(conv_data) < SegwitBech32Const.WITNESS_PROG_MIN_BYTE_LEN or
len(conv_data) > SegwitBech32Const.WITNESS_PROG_MAX_BYTE_LEN):
raise ValueError(
f"Invalid format (witness program length not valid: {len(conv_data)})"
)
# Check witness version
wit_ver = data[0]
if wit_ver > SegwitBech32Const.WITNESS_VER_MAX_VAL:
raise ValueError(
f"Invalid format (witness version not valid: {wit_ver})")
if wit_ver == 0 and not len(
conv_data) in SegwitBech32Const.WITNESS_VER_ZERO_DATA_BYTE_LEN:
raise ValueError(
f"Invalid format (length not valid: {len(conv_data)})")
return wit_ver, BytesUtils.FromList(conv_data)