Russian Federal block cipher standard GOST R 34.12-2015 with 128-bit blocks and 256-bit keys. Designed to replace GOST 28147-89, featuring an SP-network structure with 10 rounds. Standardized in RFC 7801.
| Property | Value |
|---|---|
| Category | Block Ciphers |
| Sub-category | Block Cipher |
| Security status | 🧪 Experimental |
| Complexity | Advanced |
| Inventor | Russian Federal Security Service |
| Year | 2015 |
| Origin | 🇷🇺 Russia |
| Source | algorithms/block/kuznyechik.js |
| Parameter | Supported values |
|---|---|
| Key sizes | 32 bytes (256 bits) |
| Block sizes | 16 bytes (128 bits) |
Status: 🧪 Experimental
No vulnerabilities are recorded for this implementation.
2 vectors ship with this algorithm and run in the test suite. Byte values are hexadecimal.
Vector 1 — RFC 7801 Section 5.5 - Encryption Test Vector
| Field | Value |
|---|---|
key |
8899aabbccddeeff0011223344556677fedcba98765432100123456789abcdef |
input |
1122334455667700ffeeddccbbaa9988 |
expected |
7f679d90bebc24305a468d42b9d4edcd |
Vector 2 — RFC 7801 Section 5.6 - Decryption Test Vector
| Field | Value |
|---|---|
key |
8899aabbccddeeff0011223344556677fedcba98765432100123456789abcdef |
inverse |
Yes |
input |
7f679d90bebc24305a468d42b9d4edcd |
expected |
1122334455667700ffeeddccbbaa9988 |