 |
| |||
| polyalphabetic substitution (ssn) | |||
| многоалфавитная замена: 4 phrases in 2 subjects |
| Information security and data protection | 1 |
| Security systems | 3 |
|
| |||
| polyalphabetic substitution (ssn) | |||
| многоалфавитная замена: 4 phrases in 2 subjects |
| Information security and data protection | 1 |
| Security systems | 3 |