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import zlib
from ..rfc7516 import JsonWebEncryption
from ..rfc7516 import JWEZipAlgorithm
class DeflateZipAlgorithm(JWEZipAlgorithm):
name = "DEF"
description = "DEFLATE"
def compress(self, s):
"""Compress bytes data with DEFLATE algorithm."""
data = zlib.compress(s)
# drop gzip headers and tail
return data[2:-4]
def decompress(self, s):
"""Decompress DEFLATE bytes data."""
return zlib.decompress(s, -zlib.MAX_WBITS)
def register_jwe_rfc7518():
JsonWebEncryption.register_algorithm(DeflateZipAlgorithm())
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