Specifies the location and background design of essential check data fields and is intended for all business size and personal checks.

定价： 1274元 / 折扣价： 1083 元

定价： 910元 / 折扣价： 774 元

Scope Details test and examination criteria for unvented heaters for use with natural, manufactured and mixed gases, liquefied petroleum gases, and LP gas-air mixtures. Such heaters are limited to Maximum input ratings of 40,000 Btu per hour.

定价： 5187元 / 折扣价： 4409 元

Scope Details test and examination criteria for unvented heaters for use with natural, manufactured and mixed gases, liquefied petroleum gases, and LP gas-air mixtures. Such heaters are limited to Maximum input ratings of 40,000 Btu per hour.

定价： 865元 / 折扣价： 736 元

定价： 774元 / 折扣价： 658 元

定价： 592元 / 折扣价： 504 元

Scope Details test and examination criteria for illuminating appliances for use with natural gas, manufactured gas, mixed gas, and liquefied petroleum gases for indoor or outdoor installations.

定价： 728元 / 折扣价： 619 元

Details test and examination criteria for recreational vehicle cooking gas appliances for use with liquefied petroleum gases or for use with natural gas convertible for use with liquefied petroleum gases. This standard defines a recreational vehicle coo

定价： 5460元 / 折扣价： 4641 元

Scope Details test and examination criteria for automatic intermittent pilot ignition systems designed to be adapted to existing continuous pilot burners on listed forced air heating appliances and boilers equipped with atmospheric burners. These syst

定价： 683元 / 折扣价： 581 元

定价： 592元 / 折扣价： 504 元

定价： 3959元 / 折扣价： 3366 元

定价： 5369元 / 折扣价： 4564 元

Details test and examination criteria for gas appliance pressure regulators for use with natural, manufactured and mixed gases, liquefied petroleum gases and LP gas-air mixtures. Such devices, either individual or in combination with other controls, are

定价： 683元 / 折扣价： 581 元

X9.124 Symmetric Key Cryptography for the Financial Services Industry Format Preserving Encryption is a suite of standards consisting of five parts that defines format-preserving encryption (FPE) methods. Part 1 of this standard includes a set of definitions common to all FPE techniques, a security model for FPE block cipher techniques, and a description of the pseudocode language used in defining the mode specified in this document. Part 5燿efines requirements for using the AES or Triple-DES block cipher to perform FPE using a format-preserving Feistel-based mode known as FF3.1. FF3.1 is part of the FFX family of Feistel-based format preserving encryption methods.

定价： 1274元 / 折扣价： 1083 元

Cryptography and security applications make extensive use of random numbers and random bits. However, the generation of random bits is problematic in many practical applications of cryptography. The purpose of American National Standard (ANS) X9.82 is to specify a standard for the design of random bit generators (RBGs) and to provide methods for converting the random bits to random numbers when required. By matching the security requirements of the application using the random bits with the security claims of the RBG generating those bits, an application can safely use the random bits produced by an RBG conforming to this Standard. Part 4 specifies how Approved RBGs shall be constructed, using components from Parts 2 and 3 of the Standard. Part 4 specifies constructions for an RBG, and constructions for building components that are used within those RBG constructions. The information in Part 4 is intended to be combined with the information in the Parts 2 and 3 in order to: Construct an RBG with the required security properties that will be compliant with the Standard, and Verify that an RBG has been constructed in compliance with the Standard. The precise structure, design and development of an RBG is outside the scope of this Standard.

定价： 546元 / 折扣价： 465 元 加购物车