Cause: on Windows Vista, weak encryption ciphers have been disabled and only stronger ciphers are enabled by default.
原因：在WindowsVista中，默认已经关闭了弱密码，仅开启强密码。
The combination of algorithm and the key length results in having stronger encryption, medium encryption, and weak encryption.
算法和密钥长度的组合产生强加密、中等加密和弱加密。
It's even more common to find crucial flaws in crypto-graphic algorithm implementations, which can turn strong encryption into weak encryption (or sometimes no encryption at all).
而更为普遍的情况是，加密算法实现被发现具有关键的缺陷，可以让原本的强加密退化成弱加密(有时甚至相当于完全不加密)。
DES defines some keys to be weak and therefore not suitable for encryption.
DES定义了一些弱的、因而不适合用于加密的密钥。
Although the encryption is, in essence, what protects your documents, it can be quickly rendered useless if the chosen password is weak, since it is used in the decryption process.
虽然加密是，在本质上，保护文档，它可以快速地变得无用，如果选择的密码是薄弱的，因为它是用在解密处理。
Public-key encryption The key distribution problem has always been the weak link in the secret-key systems.
公钥加密密钥的分布问题在秘钥系统中一直是一个薄弱环节。
Public-key encryption The key distribution problem has always been the weak link in the secret-key systems.
公钥加密密钥的分布问题在秘钥系统中一直是一个薄弱环节。
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