 |
| message authentication: 68 phrases in 16 subjects |
| Banking | 6 |
| Computer networks | 1 |
| Computers | 1 |
| Cryptography | 7 |
| Economy | 1 |
| European Bank for Reconstruction and Development | 3 |
| General | 7 |
| Information security and data protection | 6 |
| Information technology | 4 |
| Mass media | 5 |
| Microsoft | 2 |
| Military | 7 |
| Programming | 2 |
| Security systems | 10 |
| Technology | 4 |
| Telecommunications | 2 |