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问题: 请帮忙翻译一段话,不要电脑翻译

The public key is one half of a pair of keys used in public-key cryptography, which provides the foundation for digital certificates.
Public-key cryptography uses matched public and private keys for encryption and decryption. These keys have a numerical value that’s used by an algorithm to scramble information and make it readable only to users with the corresponding decryption key.

解答:

公开密钥是使用在公开密钥加密系统中的一对密钥之一,这个系统提供数字签名服务.
公开密钥加密系统采用两个相关密钥"公开密钥"和"私用密钥",它们分别用来加密和解密.这对密钥的使用是通过一种公开密钥算法来实现的,这种算法把信息打乱,而只有相对应的私钥的所有者才能利用私钥对密文进行解密.

自己翻译的,如有不准确的地方,请原谅~~!