RC2_FLAGS
IMPLEMENT_cipher(rc2, RC2, ecb, ECB, RC2_FLAGS, 128, 64, 0, block)
IMPLEMENT_cipher(rc2, RC2, cbc, CBC, RC2_FLAGS, 128, 64, 64, block)
IMPLEMENT_cipher(rc2, RC2, cbc, CBC, RC2_FLAGS, 40, 64, 64, block)
IMPLEMENT_cipher(rc2, RC2, cbc, CBC, RC2_FLAGS, 64, 64, 64, block)
IMPLEMENT_cipher(rc2, RC2, ofb128, OFB, RC2_FLAGS, 128, 8, 64, stream)
IMPLEMENT_cipher(rc2, RC2, cfb128, CFB, RC2_FLAGS, 128, 8, 64, stream)