Defines a method for digital signature generation and verification for the protection of messages and data using the Digital Signature Algorithm (DSA). This standard is used in conjunction with the hash function, as defined in American National Standard for Public Key Cryptography - Part 2: The Secure Hash Algorithm (SHA-1), BSR X9.30.2. In addition, this standard provides the criteria for the generation of public and private keys that are required by the algorithm and the procedural controls required for the secure use of the algorithm. Specific sections include definitions and common abbreviations, application, the DSA, Generation of Primes for the DSA, Random Number Generation for the DSA.

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Produces a 160-bit representation of the message, called the message digest, when a message with a bit length less than 2 to 64th power is input. The message digest is used during the generation of a signature for the message. The message digest is computed during the generation of a signature for the message. The SHA-1 is also used to compute a message digest for the received version of the message during the process of verifying the signature. Any change to the message in transit will, with a very high probability, result in a different messages digest, and the signature will fail to verify. The Secure Hash Algorithm (SHA-1) described in this standard is required for use with the Digital Signature Algorithm and may be used whenever a secure hash algorithm is required.

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This standard specifies the lsochronous Services portion of Station Management-2 (SMTP-IS) for the Fibre Distributed Data Interface (FDDI). FDDI provides a high bandwidth (100 megabits per second) general purpose interconnection among computers and peripheral equipment using optical fibre or copper twisted pair as the transmission medium in a ring configuration. FDDI can be configured to support a sustained transfer rate of approximately 80 megabits (10 megabytes) per second. The use of dual attachment stations with dual MACs allows these rates to be doubled under the circumstance of a fault-free FDDI ring.

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定价： 546元 / 折扣价： 465 元 加购物车

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定价： 546元 / 折扣价： 465 元 加购物车

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This American National Standard contains the Abstract Test Suites for the Fiber Distributed Data Interface (FDDI) token ring Station Management (SMT) layer protocol. The SMT Protocol is extensive and very complex. In the development process, the protocol was broken into six separate areas. Those areas dealt with Physical Connection Management (PCM), Entity Coordination Management (ECM) Ring Management (RMT), Configuration Management (CMT), Frame Based Management (FBM) and Management Information Base (MIB).

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This standard includes an abstract interface to services used by CASE tools. This interface will insulate a tool that uses a service from the provider of the service. The standard focuses on: - Defining specific messages with their abstract parameters; - Message semantics; - Message sequencing (constraints on message ordering); - Messages for Computer Aided Software Engineering domain.

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The SSA-PH2 standard (ANSI NCITS 307-1997) defines a physical layer that supports the SSA transport layer 2 (ANSI NCITS 308-1997), and any protocols supported by SSA-TL2 (ANSI NCITS 308-1997). The goals of SSA-PH2 (ANSI NCITS 307-1997) are: a) extending the cable distance; b) copper cable operation at 40 MB/s; c) full duplex operation to achieve an aggregate 80 MB/s between two ports; and d) other capabilities that fit within the scope of SSA-PH2 (ANSI NCITS 307-1997) that may be proposed during the development phase by the participants in the project.

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SBCON describes an input/output (l/O) and interconnection architecture. SBCON specifies fiber optic links, switched point-to-point topology, and I/O protocols for high bandwidth, high performance and long distance information exchange.

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