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| Data Encription Standard; Date Encription Standard | |||
| data encryption standards | |||
| data encryption standard; Data Encryption Standard (NIST 于 1975 年公布的 64 比特分组密码); Data Encryption Standard (NIST 于1975年公布的64比特分组密码) | |||
| 数据加密 标准: 7 phrases in 5 subjects |
| Air defense | 1 |
| Cryptography | 2 |
| Electronics | 2 |
| Information technology | 1 |
| Multimedia | 1 |