开发者_高级运维Is there a way to calculate the checksum of a file that is readonly? The only examples I have seen uses an algorithm like this
I have a PHP class to encrypt and decrypt strings: $ralphabet = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890,.:;?~@#\\$%^&*()_+-=][}{><\";
I have a message like \'example\'. Firstly i want to blind this message,later encode,unblind, and finally decode this message.
given this supercomputer : http://en.wikipedia.org/wiki/T开发者_高级运维ianhe-1A - that is no.1 at TOP500, operating at 2.5 petaFLOPS, how long it would take on average to decrypt properly encoded (th
I\'m not sure exactly how to ask this, but here\'s what I\'m hoping for, given a structure that could contain 5+n keys (thus, there are 5 keys mandatory to my system, additional keys are optional) - I
How could I generat开发者_运维百科e curve points for elliptic curve cryptography in Java?You would be advised to consider using the bouncycastle java libary, which has support for elliptic curves and
Resultant of a polynomial with x^n–1 (mod p) I am implementing the NTRUSign algorithm as described in http://grouper.ieee.org/groups/1363/lattPK/submissions/EESS1v2.pdf , section 2.2.7.1 which invol
I need to create an RSA 1024 bit \"PKCS1 public key without PEM headers\" and store it as an array of bytes.
I want to encrypt a string using des64 and des192 in iPhone . I ha开发者_运维知识库ve searched the internet and found some code but the thing is I am not that aware of cryptography . I heard that in
EDIT I\'m still hoping for some advice on t开发者_运维知识库his, i tried to clarify my intentions...
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