func AS_aes256_ofb(key []byte) AuthStreamer {
cryptkey := hash_keyed(key, "cryptkey")[:32]
hashkey := hash_keyed(key, "hashkey")
streamstate := fastTF_NewOFB(cryptkey)
truestate := cipher.Stream(streamstate)
toret := __XOR_authstreamer{
0,
hashkey,
truestate}
return AuthStreamer(toret)
}
func AS_aes128_ctr(key []byte) AuthStreamer {
cryptkey := hash_keyed(key, "cryptkey")[:16]
hashkey := hash_keyed(key, "hashkey")
blockstate := fastAES_initialize(cryptkey)
streamstate := cipher.NewCTR(blockstate, make([]byte, blockstate.BlockSize()))
truestate := cipher.Stream(streamstate)
toret := __XOR_authstreamer{
0,
hashkey,
truestate}
return AuthStreamer(toret)
}
func AS_arcfour128_drop8192(key []byte) AuthStreamer {
cryptkey := hash_keyed(key, "cryptkey")
hashkey := hash_keyed(key, "hashkey")
streamstate, _ := rc4.NewCipher(cryptkey[:16])
truestate := cipher.Stream(streamstate)
junk := make([]byte, 8192)
truestate.XORKeyStream(junk, junk)
toret := __XOR_authstreamer{
0,
hashkey,
truestate}
return AuthStreamer(toret)
}