AES finalist designed as evolution of RC5. Features 128-bit blocks, variable key sizes, and data-dependent rotations with quadratic nonlinearity. Patented algorithm with strong security properties.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | Not classified |
| Complexity | Intermediate |
| Inventor | Ron Rivest, Matt Robshaw, Ray Sidney, Yiqun Lisa Yin |
| Year | 1998 |
| Origin | 🇺🇸 United States |
| Source | algorithms/block/rc.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 16 bytes (128 bits) to 32 bytes (256 bits) in steps of 8 bytes |
| Block sizes | 16 bytes (128 bits) |
Status: not classified — treat as unverified.
No vulnerabilities are recorded for this implementation.
1 vector ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — IETF test vector - RC6-32/20/16 (128-bit key)
| Field | Value |
|---|---|
key |
000102030405060708090a0b0c0d0e0f |
input |
000102030405060708090a0b0c0d0e0f |
expected |
3a96f9c7f6755cfe46f00e3dcd5d2a3c |