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    • 4. 发明授权
    • Probabilistic cryptographic processing method
    • 概率密码处理方法
    • US5235644A
    • 1993-08-10
    • US546614
    • 1990-06-29
    • Amar GuptaButler W. LampsonWilliam R. HaweJoseph J. TardoCharles W. KaufmanMark F. KempfMorrie GasserB. J. Herbison
    • Amar GuptaButler W. LampsonWilliam R. HaweJoseph J. TardoCharles W. KaufmanMark F. KempfMorrie GasserB. J. Herbison
    • H04L29/02
    • H04L29/02
    • A decryption method, and associated cryptographic processor, for performing in-line decryption of information frames received from a communication network through a first in-line processing stage. As an information packet is streamed into the cryptographic processor, a determination is made to an acceptable level of probability whether the packet contains data that should be decrypted. The decision whether or not decrypt is made by analyzing the incoming packet header, recognizing a limited number of packet formats, and further parsing the packet to locate any encrypted data and to make sure that the packet is not a segment of a larger message. Falsely decrypted packets are looped back through the cryptographic processor, to regenerate the data that was falsely decrypted. Decryption and encryption are performed in such a manner that a false decryption is completely reversible without loss of data. Special treatment is provided for packets containing data that cannot be divided into an integral number of standard blocks required for decryption processing.
    • 一种解密方法和相关联的密码处理器,用于通过第一串联处理级来执行从通信网络接收的信息帧的在线解密。 当信息分组被流传输到密码处理器中时,确定分组是否包含应被解密的数据的可接受概率水平。 通过分析进入的分组报头,识别有限数量的分组格式以及进一步解析分组以定位任何加密的数据并确保分组不是更大的消息的分段来进行解密的决定。 虚假解密的数据包通过密码处理器环回,以重新生成被错误解密的数据。 执行解密和加密,使得假解密完全可逆而不丢失数据。 对于包含不能被分解为解密处理所需的整数个标准块的数据的数据包,提供特殊处理。