Comparison of Stream Ciphers
| Stream Cipher |
Creation Date |
Speed (cycles per byte) |
(bits) | Attack | |||
|---|---|---|---|---|---|---|---|
| Effective Key-Length |
Initialization vector | Internal State |
Best Known | Computational Complexity |
|||
| A5/1 | 1989 | Voice (Wphone) | 54 | 114 | 64 | Active KPA OR KPA Time-Memory Tradeoff |
~2 seconds OR 239.91 |
| A5/2 | 1989 | Voice (Wphone) | 54 | 114 | 64? | Active | 4.6 milliseconds |
| Achterbahn-128/80 | 2006 | 1 (hardware) | 80/128 | 80/128 | 297/351 | Brute force for frame lengths L ≤ 244. Correlation attack for L ≥ 248. | 280 resp. 2128 for L ≤ 244. |
| CryptMT | 2005 | Very Fast (Software) | Variable | up to 19968 | 19968 | N/A (2008) | N/A (2008) |
| FISH | 1993 | Quite Fast (Wsoft) | Variable | ? | ? | Known-plaintext attack | 211 |
| Grain | Pre-2004 | Fast | 80 | 64 | 160 | Key-Derivation | 243 |
| HC-256 | Pre-2004 | 4 (WP4) | 256 | 256 | 65536 | ? | ? |
| ISAAC | 1996 | 2.375 (W64-bit) - 4.6875 (W32-bit) |
8-8288 usually 40-256 |
N/A | 8288 | (2006) First-round Weak-Internal-State-Derivation |
4.67×101240 (2001) |
| MUGI | 1998–2002 | ? | 128 | 128 | 1216 | N/A (2002) | ~282 |
| PANAMA | 1998 | 2 | 256 | 128? | 1216? | Hash Collisions (2001) | 282 |
| Phelix | Pre-2004 | up to 8 (Wx86) | 256 + a 128-bit Nonce | 128? | ? | Differential (2006) | 237 |
| Pike | 1994 | 0.9 x FISH (Wsoft) | Variable | ? | ? | N/A (2004) | N/A (2004) |
| Py | Pre-2004 | 2.6 | 8-2048? usually 40-256? |
64 | 8320 | Cryptanalytic Theory (2006) | 275 |
| Rabbit | 2003-Feb | 3.7(WP3)-9.7(WARM7) | 128 | 64 | 512 | N/A (2006) | N/A (2006) |
| RC4 | 1987 | 7 WP5 | 8-2048 usually 40-256 |
8 | 2064 | Shamir Initial-Bytes Key-Derivation OR KPA | 213 OR 233 |
| Salsa20 | Pre-2004 | 4.24 (WG4) - 11.84 (WP4) |
256 | a 64-bit Nonce + a 64-bit stream position | 512 | Probabilistic neutral bits method | 2251 for 8 rounds (2007) |
| Scream | 2002 | 4 - 5 (Wsoft) | 128 + a 128-bit Nonce | 32? | 64-bit round function | ? | ? |
| SEAL | 1997 | Very Fast (W32-bit) | ? | 32? | ? | ? | ? |
| SNOW | Pre-2003 | Very Good (W32-bit) | 128 OR 256 | 32 | ? | ? | ? |
| SOBER-128 | 2003 | ? | up to 128 | ? | ? | Message Forge | 2−6 |
| SOSEMANUK | Pre-2004 | Very Good (W32-bit) | 128 | 128 | ? | ? | ? |
| Trivium | Pre-2004 | 4 (Wx86) - 8 (WLG) | 80 | 80 | 288 | Brute force attack (2006) | 2135 |
| Turing | 2000–2003 | 5.5 (Wx86) | ? | 160 | ? | ? | ? |
| VEST | 2005 | 42 (WASIC) - 64 (WFPGA) |
Variable usually 80-256 |
Variable usually 80-256 |
256 - 800 | N/A (2006) | N/A (2006) |
| WAKE | 1993 | Fast | ? | ? | 8192 | CPA & CCA | Vulnerable |
| Stream Cipher |
Creation Date |
Speed (cycles per byte) |
(bits) | Attack | |||
| Effective Key-Length |
Initialization vector | Internal State |
Best Known | Computational Complexity |
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