hns-links/nostr.py

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2024-03-27 16:59:22 +11:00
from base64 import b32decode
from base64 import b16encode
from bech32 import bech32_decode
from bech32 import bech32_encode
B32 = "ABCDEFGHIJKLMNOPQRSTUVWXYZ234567"
def add_padding(base32_len):
bits = base32_len * 5
padding_size = (8 - (bits % 8)) % 8
return padding_size
def npub_to_hex(npub):
hrd, data = bech32_decode(npub)
b32_data = [B32[index] for index in data]
data_str = "".join(b32_data)
data_length = len(data_str)
data_str += "=" * add_padding(data_length)
decoded_data = b32decode(data_str)
b16_encoded_data = b16encode(decoded_data)
hex_str = b16_encoded_data.decode("utf-8").lower()
return hex_str
def json(links):
names = {}
for link in links:
names[link['name']] = npub_to_hex(link['pub'])
return {'names':names}