| 单词 | data encryption standard |
| 释义 | Data Encryption Standarddata encryption standard[′dad·ə en‚krip·shən ′stan·dərd]Data Encryption StandardDES has been implemented in VLSI. SunOS provides a descommand which can make use of DES hardware if fitted. Neitherthe software nor the hardware are supposed to be distributedoutside the USA. Unix manual pages: des(1), des(3), des(4). data encryption standarddata encryption standardA Federal Information Processing Standards (FIPS)-approved cryptographic algorithm for encrypting (enciphering) and decrypting (deciphering) binary coded information. Encrypting converts data to an unintelligible form called cipher, which is converted back to its original form (plaintext) by decrypting. DES specifies both enciphering and deciphering operations, which are based on a 64-bit binary number (a key); unauthorised recipients of the cipher without the correct key cannot derive the original data algorithmically. Data that is considered sensitive by the responsible authority, or data that represents a high value, should be cryptographically protected if it is vulnerable to unauthorised disclosure or undetected modification during transmission or while in storage. |
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