| 1. | The most obvious concern in selecting a symmetric key algorithm is security
在选择对称密钥算法时，最关心的问题就是安全性。 |
| 2. | Symmetric key algorithm
对称钥算法 |
| 3. | Consequently , symmetric key algorithms are normally used for securing data at rest
因此，一般采用对称密钥算法来保证静态数据的安全。 |
| 4. | Cast is perhaps best known as the default symmetric key algorithm in current versions of the pgp e - mail security program
Cast也许是当前版本的pgp电子邮件安全程序中已知的最好的默认对称密钥算法。 |
| 5. | Public key algorithms are very slow compared to symmetric key algorithms , making them impractical for applications where response time is a factor
公共密钥算法与对称密钥算法相比非常慢，所以对于需要考虑响应时间的应用程序，采用公共密钥算法是不实际的。 |
| 6. | Accordingly , encryption applications used to secure data in transit , such as the secure sockets layer protocol , often use a combination of public key algorithms and symmetric key algorithms
因此，用于保护传输中的数据的加密应用程序，例如安全套接字层（ secure sockets layer ）协议常常结合使用公共密钥算法和对称密钥算法。 |
| 7. | Sender and receiver use a public key algorithm to negotiate and exchange a mutually acceptable secret key ; that key is then used with a symmetric key algorithm to transmit messages between the two
发送方和接收方使用公共密钥算法进行协商，并交换双方都可以接受的保密的密钥。然后使用这个密钥加上对称密钥算法在双方之间传输消息。 |
| 8. | For applications that are securing data at rest , public key algorithms offer no advantages over symmetric key algorithms , as the decryption key needs to be kept secret , just as it does in a symmetric key algorithm
对于保护静态数据的应用程序，公共密钥算法与对称密钥算法相比没有优势，因为解密密钥需要保密，这与对称密钥算法一样。 |
| 9. | The ca manufactures digital certificates with necessary information , by cryptography of asymmetric key algorithms and symmetric key algorithms . it implements an infrastructure for issuing digital certificate to protect information , based on platform of open - sourced operating system , developed by cross - platform language , which guarantees the confidentiality , authentication , integrity , non - repudiation of information
该系统以非对称加密算法结合对称加密算法，生成数字证书所需的各种信息，并以开放源代码操作系统为平台，以跨平台的开发语言为工具，实现一个能保证信息安全的数字证书发放基础设施，充分保证信息的机密性、真实性、完整性、不可抵赖性。 |
