We use cookies to enhance your browsing experience, serve personalized content, and analyze our traffic. Cookies are small files of information stored on your device that help us remember your preferences and improve your experience. By clicking ‘Accept All’, you consent to our use of cookies. You are able to reject all non-essential cookies or manage your preferences by . To learn more about our Online Digital and Cookie Notice,
click here.
Cookie Preference Center
Please manage your cookie choices by switching the consent toggles on or off under the Purposes below.
You may change your preference at any time as described in our Cookie Policy
CAN/CSA-ISO/IEC 7064-04 (R2012) - Information Technology - Security Techniques - Check Character Systems (Adopted ISO/IEC 7064:2003, first edition, 2003-02-15)
English, French
Publication Year 2004
Published by CSA Group
Reaffirmed in 2012
info Login or Register
A free user account is required to view this document.
This document is purchased as a PDF (Portable Document Format) and accessed via CSA OnDemand™, where you can view, navigate, and print it, or download it for offline use with Adobe Acrobat Viewer. This PDF contains Digital Rights Management protection and is intended for individual use. Please see Terms of Use for CSA’s copyright license and more information.
Pages: 24
$90.00 USD
Language:
Quantity:
Subscription
CSA OnDemandTM
(Multi-user Subscription)
SKU: 2701874
CSA OnDemand™ annual subscription keeps you up-to-date with the latest editions of standards. Designed for organizations requiring access to 10 or more standards for 10 or more users, it includes all supported languages and archive versions.
Annual subscription includes:
Newest and previous editions in PDF format
Revisions, updates, and amendments
All supported languages
*Price includes access for up to 10 users. For additional users, select the number required on the cart page. Subscription must include a minimum of 10 standards or a collection to proceed to checkout.
1.1 This International Standard specifies a set of check character systems capable of protecting strings against errors which occur when people copy or type data. The strings may be of fixed or variable length and may have character sets which are a) numeric (10 digits: 0 to 9); b) alphabetic (26 letters: A to Z); and c) alphanumeric (letters and digits). Embedded spaces and special characters are ignored.
1.2 This International Standard specifies conformance requirements for products described as generating check characters or checking strings using the systems given in this International Standard.
1.3 These check character systems can detect: a) all single substitution errors (the substitution of a single character for another, for example .4234. for .1234).; b) all or nearly all single (local) transposition errors (the transposition of two single characters, either adjacent or with one character between them, for example .12354. or .12543. for .12345.); c) all or nearly all circular shift errors (circular shifts of the whole string to the left or right); d) a high proportion of double substitution errors (two separate single substitution errors in the same string, for example .7234587. for .1234567).; and e) a high proportion of all other errors.
1.4 This International Standard excludes systems designed specifically to: a) permit both error detection and automatic correction; b) detect deliberate falsification; and c) check strings interchanged solely between machines.
1.5 This International Standard is for use in information interchange between organizations. It is also strongly recommended for use in internal information systems.
Login or Register
View Access for this document is only available for viewers in Canada