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    • 9. 发明授权
    • Method and apparatus for validating entry of cryptographic keys
    • 用于验证加密密钥的输入的方法和装置
    • US5214698A
    • 1993-05-25
    • US672265
    • 1991-03-20
    • Ronald M. Smith, Sr.Phil C. YehRandall J. EasterDonald B. JohnsonAn Van LeStephen M. MatyasJulian ThomasJohn D. Wilkins
    • Ronald M. Smith, Sr.Phil C. YehRandall J. EasterDonald B. JohnsonAn Van LeStephen M. MatyasJulian ThomasJohn D. Wilkins
    • G09C1/00H04L9/08
    • H04L9/088
    • A cryptographic facility implements a multiple key part import procedure. The installation manager can verify that a key part has been correctly entered and has not been compromised. The security requirement for the procedure is that no single party can subvert the system security by misusing the procedure. This is accomplished by the use of a control-vector-dependent verification pattern to indicate that each key part has been accepted by using the proper control vector and the use of different key switch positions to specify whether the key part is a master key part or an operational key part and whether the key part is a first part or a subsequent key part. The apparatus provides an automatic reset of the key part register at the completion of each key-entry instruction so that each key part can be imported only once. This prevents the same key part from being imported twice as different key part types. The apparatus also prevents a key part from being combined with itself to create a known key. The procedure is fail-safe so that the program cannot steal a key part from a previously failed procedure.
    • 密码工具实现了多重关键部分导入过程。 安装管理员可以验证关键部件是否已正确输入,并且未被泄露。 程序的安全要求是,没有一方可以通过滥用程序颠覆系统安全。 这是通过使用控制向量相关的验证模式来实现的,以通过使用适当的控制向量来指示每个关键部分已被接受,并且使用不同的键开关位置来指定关键部分是主键部分还是主键部分 操作键部分以及关键部分是第一部分还是随后的关键部分。 该装置在完成每个键入指令时提供关键部分寄存器的自动复位,使得每个键部分只能被导入一次。 这样可以防止相同的关键部分作为不同的关键部件类型被导入两次。 该装置还防止关键部分与其自身组合以创建已知密钥。 该过程是故障安全的,以便程序不能从以前失败的过程中窃取关键部分。