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[通信技术]smart card 7

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gun 发表于 2005/1/14 17:31:49

Transmission Protocol Data Units (TPDUs): these protocols are used for the transmission of APDUs and the data structure that is exchanged by the host and a card suing the transport protocol are called as TPDUs. Mainly two types of protocols are in common use for this purpose: T = 0: the smallest unit processed and transmitted by the protocol is single byte, in other words it is byte oriented. T = 1: this consists of sequence of bytes, in other

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[通信技术]smart card 6

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gun 发表于 2005/1/14 17:30:35

The APDU is an application level protocol as specified in the ISO 7816-4, which takes place between a smart card and a host application for the communication purpose. APDU consist of two structures, as defined below: Command APDU (C-APDU: this command is used by the host application to send command to the card. Header: it consist of 4 bytes:- Class of instruction (CLA) Instruction code (INS) Parameters: P1 and 2

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[通信技术]smart card 5

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gun 发表于 2005/1/14 17:28:53

The smart card communicates with outside world with the help of a reader and terminal. The reader is a card accepting device, which consist of a slot into which card may be placed. The reader provides power and establishes a path through which it can communicate with the terminal or host 删除

[通信技术]smart card 4

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gun 发表于 2005/1/14 17:28:24

So the chip contains CPU but it’ll need to have some memory if at all it wants to process something and do some computations. Well, the primary use of the IC card had been for the portable storage and retrieval of data but now they provide very advanced security features like storing private keys and certificates for authenticating users to some external system, for example a secure website. Hence another fundamental component of the IC is a 删除

[通信技术]smart card 3

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gun 发表于 2005/1/14 17:26:34

The ICC itself The ICC cards usually employ a low power micro-controller like Intel® 8051 or AVRs from ATMEL® as the

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[通信技术]smart card 2

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gun 发表于 2005/1/14 17:24:36

Is a "smart card" the same plastic card that I use at the ATM? No, probably not. The ATM cards are just plastic cards with a magnetic stripe bearing some information. A Smart Card is really smart. You might ask why? The old ATM cards and other proprietary magnetic stripe cards do not provide security and do not h

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[通信技术]smart card 1

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gun 发表于 2005/1/14 17:22:22

copy from http://www.devshed.com/c/a/Practices/ 先把这个文章贴上来，大侠就不用看了，普及版的知识，有空我试着翻译一下。 In this article I’m going to present you with a quick overview of the Smart Cards and then move on to exploring the ways they can be integrated to existing services in order to provide value added services or a new range of secure application. "It’s a small world." It’s no more just a saying -- it is a reality today. Th

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[通信技术]WIM card spec

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gun 发表于 2005/1/13 15:37:22

　WIM References: [WIM] Wireless Identity Module. URI: http://www.openmobilealliance.org/release_program/wpki_v10.html [PKCS15] "PKCS #15 v1.1: Cryptographic Token Information Syntax Standard", RSA Laboratories, June 6,2000. URI: 删除

[通信技术]关于法晚的一则报道（烧号机）

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gun 发表于 2005/1/13 12:08:29

2005。1。12法晚报道－“烧号机”要偷你的手机号看了报道觉得有必要和大家聊聊相关问题，毕竟记者不够专业：）。 1。关于其中的几个问题的澄清：这个这能破解GSM的SIM卡的号码，不能破解CDMA的号码。原文中的ISMI密码写错了应该为IMSI，是International Mobile Subscriber Identity的缩写，用普通的读卡器应该很容易读出来，破解实际上是获得KI的过程。按说智能卡有很好的安全性，存放的密钥不宜获得，但就是因为存放KI的算法存在穷举攻击漏洞，使得算法被披露出来后很快出现了解密方法。如果解密出用户的IMSI，KI写入任何一个SIM卡，开机后都会成功登陆GSM网络；实

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[通信技术]The Biggest Wireless trends in 2005

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gun 发表于 2005/1/5 15:51:13

from wirelessasia 1.Cheap Talk:The killer app 3G has been looking for?It's Voice. 2.Mobile Spam/Viruses:if you know sms spam. 3.Mobile Music:The camera phone has already proven the consumers are more than willing to make their mobiles a multi-function gadget. 4.Fixed-Mobile convergence 5.Push to Talk:This year's 'must-have' app,even if you don't need it. <

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