开发者

Is there any x for which SHA1(x) equals x?

Is there an x where SHA1(x) == x? I'm looking for a proof o开发者_运维百科r a strong argument against it.


The same arguments apply here as for the question Is there an MD5 fixed point? I.e. for a randomly chosen function it is about 63%.


Read about fixed point attack on this wiki entry One-way compression function - Davies-Meyer

Most widely used hash functions, including MD5, SHA-1 and SHA-2
use Merkle-Damgård construction.

0

上一篇:

下一篇:

精彩评论

暂无评论...
验证码 换一张
取 消

最新问答

问答排行榜