diff options
Diffstat (limited to 'freezed_deps/base58')
| -rw-r--r-- | freezed_deps/base58/__init__.py | 130 | ||||
| -rw-r--r-- | freezed_deps/base58/__main__.py | 47 | ||||
| -rw-r--r-- | freezed_deps/base58/py.typed | 1 |
3 files changed, 0 insertions, 178 deletions
diff --git a/freezed_deps/base58/__init__.py b/freezed_deps/base58/__init__.py deleted file mode 100644 index ff2fa18..0000000 --- a/freezed_deps/base58/__init__.py +++ /dev/null @@ -1,130 +0,0 @@ -'''Base58 encoding - -Implementations of Base58 and Base58Check encodings that are compatible -with the bitcoin network. -''' - -# This module is based upon base58 snippets found scattered over many bitcoin -# tools written in python. From what I gather the original source is from a -# forum post by Gavin Andresen, so direct your praise to him. -# This module adds shiny packaging and support for python3. - -from hashlib import sha256 -from typing import Union - -__version__ = '2.0.1' - -# 58 character alphabet used -BITCOIN_ALPHABET = \ - b'123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' -RIPPLE_ALPHABET = b'rpshnaf39wBUDNEGHJKLM4PQRST7VWXYZ2bcdeCg65jkm8oFqi1tuvAxyz' - -# Retro compatibility -alphabet = BITCOIN_ALPHABET - - -def scrub_input(v: Union[str, bytes]) -> bytes: - if isinstance(v, str): - v = v.encode('ascii') - - return v - - -def b58encode_int( - i: int, default_one: bool = True, alphabet: bytes = BITCOIN_ALPHABET -) -> bytes: - """ - Encode an integer using Base58 - """ - if not i and default_one: - return alphabet[0:1] - string = b"" - while i: - i, idx = divmod(i, 58) - string = alphabet[idx:idx+1] + string - return string - - -def b58encode( - v: Union[str, bytes], alphabet: bytes = BITCOIN_ALPHABET -) -> bytes: - """ - Encode a string using Base58 - """ - v = scrub_input(v) - - nPad = len(v) - v = v.lstrip(b'\0') - nPad -= len(v) - - p, acc = 1, 0 - for c in reversed(v): - acc += p * c - p = p << 8 - result = b58encode_int(acc, default_one=False, alphabet=alphabet) - return alphabet[0:1] * nPad + result - - -def b58decode_int( - v: Union[str, bytes], alphabet: bytes = BITCOIN_ALPHABET -) -> int: - """ - Decode a Base58 encoded string as an integer - """ - v = v.rstrip() - v = scrub_input(v) - - decimal = 0 - for char in v: - decimal = decimal * 58 + alphabet.index(char) - return decimal - - -def b58decode( - v: Union[str, bytes], alphabet: bytes = BITCOIN_ALPHABET -) -> bytes: - """ - Decode a Base58 encoded string - """ - v = v.rstrip() - v = scrub_input(v) - - origlen = len(v) - v = v.lstrip(alphabet[0:1]) - newlen = len(v) - - acc = b58decode_int(v, alphabet=alphabet) - - result = [] - while acc > 0: - acc, mod = divmod(acc, 256) - result.append(mod) - - return b'\0' * (origlen - newlen) + bytes(reversed(result)) - - -def b58encode_check( - v: Union[str, bytes], alphabet: bytes = BITCOIN_ALPHABET -) -> bytes: - """ - Encode a string using Base58 with a 4 character checksum - """ - v = scrub_input(v) - - digest = sha256(sha256(v).digest()).digest() - return b58encode(v + digest[:4], alphabet=alphabet) - - -def b58decode_check( - v: Union[str, bytes], alphabet: bytes = BITCOIN_ALPHABET -) -> bytes: - '''Decode and verify the checksum of a Base58 encoded string''' - - result = b58decode(v, alphabet=alphabet) - result, check = result[:-4], result[-4:] - digest = sha256(sha256(result).digest()).digest() - - if check != digest[:4]: - raise ValueError("Invalid checksum") - - return result diff --git a/freezed_deps/base58/__main__.py b/freezed_deps/base58/__main__.py deleted file mode 100644 index b76fdad..0000000 --- a/freezed_deps/base58/__main__.py +++ /dev/null @@ -1,47 +0,0 @@ -import argparse -import sys - -from base58 import b58decode, b58decode_check, b58encode, b58encode_check - - -def main(): - '''Base58 encode or decode FILE, or standard input, to standard output.''' - - stdout = sys.stdout.buffer - - parser = argparse.ArgumentParser(description=main.__doc__) - parser.add_argument( - 'file', - metavar='FILE', - nargs='?', - type=argparse.FileType('r'), - default='-') - parser.add_argument( - '-d', '--decode', - action='store_true', - help='decode data') - parser.add_argument( - '-c', '--check', - action='store_true', - help='append a checksum before encoding') - - args = parser.parse_args() - fun = { - (False, False): b58encode, - (False, True): b58encode_check, - (True, False): b58decode, - (True, True): b58decode_check - }[(args.decode, args.check)] - - data = args.file.buffer.read() - - try: - result = fun(data) - except Exception as e: - sys.exit(e) - - stdout.write(result) - - -if __name__ == '__main__': - main() diff --git a/freezed_deps/base58/py.typed b/freezed_deps/base58/py.typed deleted file mode 100644 index e5aff4f..0000000 --- a/freezed_deps/base58/py.typed +++ /dev/null @@ -1 +0,0 @@ -# Marker file for PEP 561.
\ No newline at end of file |