Source

ytmanager / gdata / tlslite / utils / OpenSSL_RC4.py

"""OpenSSL/M2Crypto RC4 implementation."""

from cryptomath import *
from RC4 import RC4

if m2cryptoLoaded:

    def new(key):
        return OpenSSL_RC4(key)

    class OpenSSL_RC4(RC4):

        def __init__(self, key):
            RC4.__init__(self, key, "openssl")
            self.rc4 = m2.rc4_new()
            m2.rc4_set_key(self.rc4, key)

        def __del__(self):
            m2.rc4_free(self.rc4)

        def encrypt(self, plaintext):
            return m2.rc4_update(self.rc4, plaintext)

        def decrypt(self, ciphertext):
            return self.encrypt(ciphertext)
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