IBM’s pioneering Feistel cipher (1973) that directly led to DES development. Uses 128-bit blocks and keys with 16-round structure.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Feistel Cipher |
| Security status | 📰 Obsolete |
| Complexity | Intermediate |
| Inventor | Horst Feistel, Don Coppersmith |
| Year | 1973 |
| Origin | 🇺🇸 United States |
| Source | algorithms/block/lucifer.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 16 bytes (128 bits) |
| Block sizes | 16 bytes (128 bits) |
Status: 📰 Obsolete
No vulnerabilities are recorded for this implementation.
6 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — Applied Cryptography LUCIFER2 TESTS vector 1
| Field | Value |
|---|---|
key |
0123456789abcdeffedcba9876543210 |
input |
00000000000000000000000000000000 |
expected |
a201fc18d62c85ef5965a58295bbf609 |
Vector 2 — Applied Cryptography LUCIFER2 TESTS vector 2
| Field | Value |
|---|---|
key |
00000000000000000000000000000000 |
input |
0123456789abcdeffedcba9876543210 |
expected |
9d14fe4377aa87dd07cc8a14522c21ed |
Vector 3 — Applied Cryptography LUCIFER2 TESTS vector 3
| Field | Value |
|---|---|
key |
0123456789abcdeffedcba9876543210 |
input |
ffffffffffffffffffffffffffffffff |
expected |
97f1c104b0f120d194c07024f14815ed |
Vector 4 — Applied Cryptography LUCIFER2 TESTS vector 4
| Field | Value |
|---|---|
key |
ffffffffffffffffffffffffffffffff |
input |
0123456789abcdeffedcba9876543210 |
expected |
d442a34dd70e2b4156eb0f2a8aded1a7 |
Vector 5 — Applied Cryptography LUCIFER2 TESTS vector 5
| Field | Value |
|---|---|
key |
0123456789abcdeffedcba9876543210 |
input |
0123456789abcdeffedcba9876543210 |
expected |
cf46622fa98546bb9a5bc00239eb0c92 |
Vector 6 — Applied Cryptography LUCIFER2 TESTS vector 6
| Field | Value |
|---|---|
key |
fedcba98765432100123456789abcdef |
input |
0123456789abcdeffedcba9876543210 |
expected |
7faf65bfc5458fd2dc9cc2266012ef44 |