A mismatch in either the encryption key or key version number causes the decryption process to fail.
加密密匙或密匙版本号的不匹配会导致解密过程失败。
This can happen to messages being transmitted in the clear, transmitted encrypted but stored in the clear, or decryption of messages due to stolen key or cryptoanalysis.
以明文方式传输消息、传输加密的但以明文方式存储的消息、或者由于密钥被窃取或通过密码分析获取后对消息进行解密，在以上几种情况下都可能发生这种攻击。
Collaboration is done by Alice generating a new token plus a decryption key which are sent to Bob who USES them to retrieve documents from the cloud and to decrypt them.
协作是通过Alice生成新的令牌还有解密密钥完成的，密钥会被传送给Bob，他会使用密钥从云中取得文档并对其进行解密。
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