The key used for the data encryption is encrypted itself using an asymmetric algorithm with the public key associated with the Service Provider's X.509 certificate.
用于数据加密的密钥是使用带有与服务提供者（Service Provider）的 X.509 证书相关联的公钥的非对称算法进行加密的。
An asymmetric algorithm USES a different key for encrypting or decrypting the message; one of the keys must be kept secret, and the other key is usually made public.
非对称算法使用不同的密钥对消息进行加密或解密；其中一个秘钥必须是秘密的，而另一个密钥通常是公开的。
Gets the key sizes that are supported by the asymmetric algorithm.
获取不对称算法支持的密钥大小。
Specifies the key sizes that are supported by the asymmetric algorithm.
指定不对称算法支持的密钥大小。
Creates an instance of the specified implementation of an asymmetric algorithm.
创建非对称算法的指定实现的实例。
Represents the size, in bits, of the key modulus used by the asymmetric algorithm.
表示不对称算法所用密钥模块的大小(以位为单位)。
Public keys, however, must be larger, because the mathematics in an asymmetric algorithm are different.
然而，公开钥匙必须更长，因不对称算法中的数学是不同的。
Public keys, however, must be larger, because the mathematics in an asymmetric algorithm are different.
然而，公开钥匙必须更长，因不对称算法中的数学是不同的。
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