小宋的专栏

  提到网络安全，不得不说说这个“中间人”攻击。 先讲个故事吧，2k年的时候很喜欢五子棋，不管上课下课找人就下，奈何周围高手甚众，屡战屡败，到263的网络游戏找菜鸟pk，也是败多胜少。于是在电脑上修炼，下个中级的电脑都很吃力。发现高级电脑计算精准，妙招频出，忽然想到个点子，可以用电脑帮我赢棋啊。操作如下： 到游戏室找人PK，让对方先手，同时自己先手与本机的高级电脑开局。我把网上对手的每一步

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Normal 0 7.8 磅 0 2 false false false MicrosoftInternetExplorer4 Accordingto PK

1.    Steps to new a application    a)    New a smart device project    b)    Add additional include directory: ../celib; ../celib/openssl; ../celib/include;    The last path is where the wcecompa

Well, with the commercial use of 3G,more and more application will flourish in the mobile platform. And most of theimplement is associated with security such as payment, E-bank, DRM and so on. So

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Normal 0 7.8 磅 0 2 false false false MicrosoftInternetExplorer4 <!-- /*

CTR is also an encryption mode, just use a counter as IV, and use IV’s cipher xor plain data by bytes.Cause x ^ y ^ y = x, we can see that the encrypt and decrypt function are the same. And as there

In order to work with the Java Card, we need to implement the algorithm ALG_DES_MAC8_ISO9797_1_M2_ALG3 outside the card.  Here is the instruction from Java Card Application Programming Interface:

 CSP review:Well, other team need my assistant, while I haven’t tough the CSP for about two years, now do some revisions. Setup debugging environment:1, register the CSP into system. regsvr3

Collision: different message have the same message digest. Confusion and diffusion:In Shannons original definitions, confusion refers to making the relationship between the key and the cipherte

MAC, (message authentication code), just a personal digest algorithm with a secret key.HMAC, just a MAC with standard digest algorithm. Hashed twice. The secret key just do XOR operation.Drawback

 Today still debug MAC algorithm in Java card with Xuxu, I have to implement the MAC algorithm but there are so little document on it, I can only try time after time. Girls are always girls, alway

HMAC implementation， OPENSSL, Crypto API(CSP), android native, windows mobile, Symbian