If to consider algorithm MD5 which serves to be the base of generator initially it should be the means of storage of passwords and unique signature. The initial information (sequence of any length) is taken and on its basis the sequence from 128 bats (the so-called signature) is generated which is usually written down by 32 hexadecimal symbols, and change of the one and only bit will lead to considerable change of the whole MD5-signature. This signature is also a hash-function, that is, at operating only with the signature decoding of initial data is impossible. Therefore similar codes are widely used in safety systems: to store passwords (from bank systems to the Internet), they are applied as signatures (for example, signatures PGP) and also to be assured that code contents have not changed (in systems UNIX and virtual casinos).
Now these algorithms are widely applied to guarantee the absence of swindle in the internet casino, thus, that both parties - both casino and visitors – are in favor from this. The user does not have necessity for downloading real files, thereby he simultaneously keeps safety of a casino from breaking, and fairly saves the traffic. The invariance of an initial file is guaranteed by the control sum on this algorithm. The user can easily be convinced of it, having generated the signature. Easier speaking, the casino speaks: “Here is your personal sequence of spins/cards; you can check it up by your MD5-signature”. You generate the signature and if it coincides nobody changed your information.
However, electronics development lets breaking of the information to be if not so easy? But at least it simplifies the hackers’ work. If earlier selection attempt on the computer of messages for the given signature would occupy not less thousand years now there are algorithms which considerably facilitate this selection. That is, if you know a source code, you can create another, changed message, but Md5-signature both in the first, and in the second message will be identical. Though it is possible not to be afraid yet of the end of MD5-signatures. There is no yet an absolute possibility of selection of initial sequence under the signature. That before existence of several messages with the uniform signature here there are some nuances.
First, selection of variants will take away hour on a supercomputer, and on personal one - about four hours (different machines use different algorithms). Secondly, at such selection the initial message will be in a random way modified (still unlimited quantity of casual symbols will increase), and it is rather difficult not to notice such a “growth”. And thirdly, it is not known yet about one discovered algorithm, no less than about the programs used for its breaking.
Now the given algorithm completely guarantees an invariance of the initial generated sequence so, and there are no bases to be afraid of dishonesty of online casino. Initial files of messages with the uniform signature will differ too strongly from each other as these documents will have different structure, and differences will be visible at once. Probably, by the moment of possibility of real breaking of signature MD5 the casino will get the new algorithms guaranteeing safety of players.
