hmacOTP is a free OATH-compliant OTP client for PDA which generates one-time passwords based on HMAC OTP (HOTP) standard. This standard is a recent industry development for open strong authentication. It is an effort of the initiative for Open AuTHentication and is currently supporting by multiple vendors whith authentication solutions.
The idea behind hmacOTP is […]
Turn your PDA into OATH OTP token with hmacOTP software for free
There is the draft standard “HOTP: An HMAC-based One Time Password Algorithm” as a result of OATH efforts. Putting aside political issues this current draft does not sounds proper to-be-a-standard. The proposed algorithm is good but the draft covers only a very simple case […]
This note describes the algorithm named Sapparot. It is a pseudo-random number generator (PRNG) with good statistical characteristics and performance. This generator consists of two 32-bits rotors with 32-bits output as a result of exclusive-OR (XOR) rotors confusion. The figure 1 below illustrates a round of Sapparot.
Figure 1: One round of Sapparot
Both A and B […]
There are some vendors provides an “even more secure” products by using cascading encryption for the data. They are declaring that applying encryption to the data by two different ciphers one after another would indeed double cryptographic strength and security. Well, it is not actually and here is why it is so.
Let M is the […]
There are numbers as a product of two prime factors and there is a special set of such numbers that can be factorized with a simply method.
The method is very easy to describe: take BASE2 representation of a number; pad it with a leading zero to even length if necessary; bisect it; confuse two […]
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