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    • 1. 发明授权
    • Data authentication using modification detection codes based on a public
one way encryption function
    • 基于公共单向加密功能的修改检测码进行数据认证
    • US4908861A
    • 1990-03-13
    • US90633
    • 1987-08-28
    • Bruno O. BrachtlDon CoppersmithMyrna M. HydenStephen M. Matyas, Jr.Carl H. W. MeyerJonathan OseasShaiy PilpelMichael Schilling
    • Bruno O. BrachtlDon CoppersmithMyrna M. HydenStephen M. Matyas, Jr.Carl H. W. MeyerJonathan OseasShaiy PilpelMichael Schilling
    • H04L9/32
    • H04L9/3239H04L9/002H04L9/0643H04L9/0825H04L2209/04H04L2209/56
    • A cryptographic method and apparatus are disclosed which transform a message or arbitrary length into a block of fixed length (128 bits) defined modification detection code (MDC). Although there are a large number of messages which result in the same MDC, because the MDC is a many-to-one function of the input, it is required that it is practically not feasible for an opponent to find them. In analyzing the methods, a distinction is made between two types of attacks, i.e., insiders (who have access to the system) and outsiders (who do not). The first method employs four encryption steps per DEA block and provides the higher degree of security. Coupling between the different DEA operations is provided by using the input keys also as data in two of the four encryption steps. In addition, there is cross coupling by interchanging half of the internal keys. Although this second coupling operation does not add to security in this scheme, it is mandatory in the second method, which employs only two encryption steps per DEA block to trade off security for performance. By providing key cross coupling in both schemes, an identical kernel is established for both methods. This has an implementation advantage since the first method can be achieved by applying the second method twice. The MDC, when loaded into a secure device, authorizes one and only one data set to be authenticated by the MDC, whereas methods based on message authentication codes or digital signatures involving a public key algorithm authorize a plurality of data sets to be authenticated. The MDC therefore provides for greater security control.
    • 公开了将消息或任意长度变换为固定长度(128位)定义的修改检测码(MDC)的块的密码方法和装置。 虽然有大量的消息导致相同的MDC,因为MDC是一个多对一的输入功能,但要求对方找到它们实际上是不可行的。 在分析方法时,区分了两种类型的攻击,即内部人员(谁可以访问系统)和外部人员(谁没有)。 第一种方法对每个DEA块采用四个加密步骤,并提供更高的安全性。 通过在四个加密步骤中的两个中也使用输入键作为数据来提供不同DEA操作之间的耦合。 另外,通过交换一半的内部键来存在交叉耦合。 尽管这种第二个耦合操作并不增加该方案的安全性,但是在第二种方法中,强制性的是,每个DEA块仅使用两个加密步骤来对性能进行权衡。 通过在两种方案中提供关键交叉耦合,为这两种方法建立了相同的内核。 这具有实现优点,因为可以通过应用第二种方法两次来实现第一种方法。 当MDC被加载到安全设备中时,授权一个且仅一个数据集由MDC认证,而基于消息认证码或涉及公开密钥算法的数字签名的方法授权多个数据集进行认证。 因此,MDC提供更大的安全控制。
    • 4. 发明授权
    • System and procedure for protection against the analytical espionage of secret information
    • 防范秘密信息分析间谍的制度和程序
    • US06711685B1
    • 2004-03-23
    • US09327883
    • 1999-06-08
    • Albert SchaalHelmut ScherzerMichael Schilling
    • Albert SchaalHelmut ScherzerMichael Schilling
    • G06F1760
    • G07F7/082G06F21/602G06F21/6209G06F2221/2101G06F2221/2105G06F2221/2153G06Q20/341G06Q20/367G06Q20/3672G07F7/1008G07F7/1083
    • The invention presented describes a system and procedure for protecting against the espionage of secret information. A counter is allocated to each secret piece of information, in particular codes. The counter counts the number of uses of the secret information. In this, the counter is set to a starting value. Each use of the secret data element increases the counter state by a defined value. If the counter state reaches a maximum value, the use of the secret data element will be blocked. The blocking of the secret information can, however, be avoided if a defined event occurs before the maximum value of the counter is reached which automatically resets the counter state to its starting value. Any technical, economic or organisational condition can be defined as an event. Particular advantages of the invention presented are that each code can have its own counter allocated to it. In this way, different numbers of uses can be established for each code with regard to its function. As a chip card can contain any number of codes for the most widely differing applications, the block is limited solely to the application affected. The use of the chip card is not therefore blocked as a whole. The events can be easily adapted to the widest range of security and user requirements of the respective application area.
    • 本发明描述了一种防止秘密信息的间谍活动的系统和程序。 每个秘密信息分配计数器,特别是代码。 计数器对秘密信息的使用次数进行计数。 在这里,计数器设置为起始值。 秘密数据元素的每次使用都将计数器状态增加一个定义的值。 如果计数器状态达到最大值,则秘密数据元素的使用将被阻止。 但是,如果定义的事件发生在达到计数器的最大值之前会自动将计数器状态重置为其起始值,则可以避免秘密信息的阻塞。 任何技术,经济或组织条件都可以定义为事件。 所呈现的本发明的特别优点是每个代码可以具有分配给它的自己的计数器。 以这种方式,可以针对其功能针对每个代码建立不同的使用数量。 由于芯片卡可以包含用于最广泛不同应用的任何数量的代码,所以该块仅限于受影响的应用。 因此,芯片卡的使用不因此被整体阻止。 这些事件可以轻松地适应相应应用领域的最广泛的安全性和用户要求。
    • 8. 发明申请
    • METHOD FOR THE DIELECTRIC BARRIER ELECTROSPRAY IONIZATION OF LIQUID SAMPLES AND FOR THE SUBSEQUENT MASS SPECTROMETRIC ANALYSIS OF THE GENERATED SAMPLE IONS
    • 用于液体样品的电介质电子沉积离子化方法和用于生成样品离子的后续质谱分析
    • US20140001352A1
    • 2014-01-02
    • US14006408
    • 2012-03-26
    • Joachim FranzkeAnn-Kathrin StarkMichael SchillingDirk JanasekGuenter JestelRuediger WilbergCordula Meyer
    • Joachim FranzkeAnn-Kathrin StarkMichael SchillingDirk JanasekGuenter JestelRuediger WilbergCordula Meyer
    • H01J49/10H01J49/00
    • H01J49/10H01J49/0031H01J49/165
    • The invention relates to a method for the dielectric barrier electrospray ionization of liquid samples and for the subsequent mass spectrometric analysis of the generated sample ions, in which the respective liquid sample is conducted in a capillary-shaped feed channel, the surrounding wall of which comprises on the outer side, spaced from the free end, an electrode which is separated from the wall by a separating layer made of a dielectric material, wherein at a distance from the free end of the feed channel an inlet of a mass spectrometer forming a counter electrode is arranged, creating an ion formation clearance, the formed ions reaching an openable and closable trap of the mass spectrometer through the inlet, wherein a square-wave voltage is applied between the electrode and the inlet for generating the sample ions and the trap of the mass spectrometer is alternately opened and closed, and wherein the sample ions reaching the trap of the mass spectrometer are analyzed in the mass spectrometer. The aim of the invention is to only have positive or negative sample ions reach the mass spectrometer while preserving the advantages of applying a square-wave voltage. The aim is achieved by applying an asymmetrical square-wave voltage between the electrode and the inlet, in which voltage the frequency ratio of the positive and negative polarities is different.
    • 本发明涉及一种用于液体样品的电介质阻挡电喷雾离子化的方法,并且用于随后对生成的样品离子的质谱分析,其中相应的液体样品在毛细管状进料通道中传导,其周围壁包括 在外侧与自由端隔开的电极通过由电介质材料制成的隔离层与壁隔开,其中与进料通道的自由端距离形成计数器的质谱仪的入口 电极被布置成产生离子形成间隙,所形成的离子通过入口到达质谱仪的可开启和闭合的陷阱,其中在电极和入口之间施加方波电压以产生样品离子和陷阱 质谱仪交替打开和关闭,并且其中以质量分析到达质谱仪的阱的样品离子 光谱仪 本发明的目的是仅使正或负的样品离子到达质谱仪,同时保持施加方波电压的优点。 目的是通过在电极和入口之间施加不对称的方波电压来实现,其中正极和负极的频率比的电压不同。