emv tokenization

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Change of the circle storage model of PBOC/EMV

Reprinted please indicate the source Author: Pony For more information about the concept of deposit, see my other article (e-cash application ): Http://blog.csdn.net/pony_maggie/archive/2010/01/29/5270573.aspx The promotion of PBOC/EMV in China not only brings about the change of IC card, but also will inevitably lead to changes in the entire industry, including financial terminal products. this article describes the changes that PBOC/

TLV encoding and decoding of PBOC/EMV

Reprinted please indicate the source Author: Pony Most of PBOC's IC card data is in the TLV format. EMV manual describes simple encoding rules.I will analyze the TLV encoding format in detail and provide the corresponding pseudo code for TLV decoding. TLV is the abbreviation of tag, length, and value. A basic data element includes the above three fields. The tag uniquely identifies the data element, and length is the length of the Value Field.Value

Application creation list of PBOC/EMV

tag '4f 'can appear after '50. I used to think that the Order was fixed until the case of EMV L2 was upgraded in 2012.12.1. I added a case dedicated to test this, so that I could know that this order can be changed. this case is written as follows: Objective: To ensure that the terminal accepts a response to read record on A payment ststem directory file with data stored in an order different From example given in

Introduction to SDA and DDA in PBOC/EMV

PBOC/EMV has two very important concepts,SDA (static data authentication) and DDA (Dynamic Data authentication), respectively called Static data authentication and Dynamic Data authentication . These two certifications are certified offline (off-line) .  the principle of SDA implementation is digital signature . The process is as follows: The data in the IC card first sign, it is to use a hash to generate a short representation of the data as a summa

PBOC/emv sda (static data authentication)

Reprinted please indicate the sourceAuthor: Pony Before reading this article, we recommend that you understand the working principles of asymmetric encryption and decryption.   SDA means static data authentication. First, how to understand this

CDA for PBOC/EMV (Composite data authentication)

Reprinted please indicate the source Author: Pony   CDA is actually a derivative method of DDA, so it has many similarities with DDA. First, briefly describe several key points of CDA: 1. It also executes SDA, which is consistent with DDA.

PBOC/emv dda (Dynamic Data Authentication)

Reprinted please indicate the source Author: Pony   In the previous article, we talked about SDA. The steps of DDA can be understood as follows: Execute SDA first, and then perform the steps unique to DDA. this article focuses on this unique step.

Difference between 9f5d and 9f79 of EMV/PBOC

Reprinted please indicate the source Author: Pony Strictly speaking, the 9f5d concept is qpboc, And the offline balance is available. 9f79 is called an electronic cash balance. since qpboc and e-cash are not completely independent concepts, and the

EMV specification (II.)--Application selection

The purpose of the application selection is to select an application for the transaction being executed. Step: First create the application candidate list, then select an app from the candidate list. I. Creating a candidate list Establish a list of

"Soft mask" and "hard Mask"-Smart IC Card

DirectoryOne, "soft mask" and "Hard Mask" ... 2Second, EMV migration process ... 3Third, the PBOC norms and the EMV standard comparison ... 3Iv. Summary ... 5V. About SDA and DDA. 6One, "soft mask" and "Hard Mask"The terms "soft mask" and "hard mask" are often used in field tests and smart card operating systems. Strictly speaking, both terms are meaningless from a purely logical point of view, because the

File structure and file type resolution in the PBOC

1. Clear two specifications, a. ISO7816 B.EMV Specification/PBOC specifications, the difference between the two, 7816 is ISO formulated, is an international norm, and the EMV specification is the card organization, is to follow the ISO7816 norms, the PBoC is copied EMV norms, must also follow the ISO7816 specification.2. Several common file types:A. Mf,df,ef, this is the file defined in ISO7816, MF is also

POS Terminal Trading Process

according to the transaction and response code. The processing flow of the POS terminal to various trades is as follows:1. Read Card processingFor POS terminals that support IC card transactions, if the cardholder is using a magnetic stripe card with a chip, the operator should first attempt to trade using an IC card.For a POS terminal that supports EMV transactions, when the magnetic stripe of the card is first read, and the service code in the trac

Natural Language Processing (NLP) 01 -- basic text processing

Preface: Natural Language Processing (NLP) is widely used in speech recognition, machine translation, and automatic Q . The early natural language processing technology was based on "part of speech" and "Syntax". By the end of 1970s, it was replaced by the "Mathematical Statistics" method. For more information about NLP history, see the book the beauty of mathematics. This series follows Professor Stanford Dan jurafsky and Assistant Professor Christopher Manning to learn more about NLP. Includin

Stream tokenizing (exploded string)

Stream| string from the Sun Web site to see the stream tokenizing In Tech Tips:june, 1998, a example of string tokenization was presented, using the class Java.util.StringTokenizer. There ' s also another way to do tokenization, using Java.io.StreamTokenizer. Streamtokenizer operates on input streams rather than strings, and each byte into the input stream is regarded as a characte R in the range ' \u0000

Information System Project Manager-the basic method of project evaluation

recovery rate = 1/dynamic payback period x100% Benefit-cost ratio (b-c ratio, benefit-cost Ratio) = Net benefit (present or yearly)/net cost (present or yearly value) Project resource Utilization Dipp = Emv/etc, in which EMV: refers to the expected monetary value of the project, and if the payment risk is considered, the expected currency value is the individual payment value and the The sum of the produc

BER-TLV Data structure

This article is in the study process of their own problems encountered, organized.To facilitate the subsequent reference, the data for a section of the TLV structure is listed first:[6F] 4d│├─[ -] -A0000003330101│├─[a5] the││├─[ -] 0B 50424f4320437265646974││├─[ the] on on││├─[9f38] .9f33039f4e14││├─[5f2d] ,7a68656e66726465││├─[9f11] on on││├─[9f12] 0F 4341524420494d4147452030303031││├─[bf0c] to│││└─[9F4D] Geneva0b0a BER-TLV data Object Structure Tag (tag) According to ISO/IE

Natural language Processing Second speaking: Word Count

federation (for more corpora, check the linguistic data Consortium): http://www.ldc.upenn.edu/e) Corpus content (Corpus Content) I. Type (GENRE): – News, novel, broadcast, session (Newswires, novels, broadcast, spontaneous conversations) Ii. Media (Media): text, audio, video (text, audios, videos) iii. Callout (Annotations): tokenization, Syntax tree (syntactic trees), semantics (semantic senses), translation (translations) f) Callout example (Exampl

[resource-] Python Web crawler & Text Processing & Scientific Computing & Machine learning & Data Mining weapon spectrum

://github.com/grangier/python-gooseIi. python Text Processing toolsetAfter obtaining the text data from the webpage, according to the task different, needs to carry on the basic text processing, for example in English, needs the basic tokenize, for Chinese, then needs the common Chinese word participle, further words, regardless English Chinese, also can the part of speech annotation, the syntactic analysis, the keyword extraction, the text classification , emotional analysis and so on. This asp

2015-10-19 High-level jobs

requirements document commercial contract effect.2, combined with figure 17.5, describes the retrospective, retrospective.A: a): Traceability: From customer needs-"demand-" downstream work productsb): Backtracking: From downstream work products-"demand-" customer needs3, the daily function of the PMO, strategic functions, what are the respective?A) daily sexual functions include:1 Establish a supportive environment for project management within an organization2 Training Project Management staff

8583 detailed analysis of packets

track data, Z .. 35, llvar. one byte indicates the length (37), followed by the magnetic track data represented by 19 bytes BCD Field 41, terminal number, ans8, fixed length, ASCII, the terminal number is "00001111" Field 42, merchant ID, ans15, fixed length, ASCII representation, here the Merchant number is "102250153111111" Field 49, currency code, N3, fixed length. After the preceding value is 0, it is represented by two bytes of BCD. The currency code here is "156" 01 80 9f 10 13 07 01

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