Bruce Schneier sha1 have cracked, but not from this sha1 collapse, but toward more yuan, complicated move in the direction of development, this paper introduces the sha1 in electronic transactions use.

Packet : 9927444加密标记及基于sha-1下的安全电子交易.rar filelist
加密标记及基于SHA-1下的安全电子交易.CAJ

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