You should have noticed that Delphi 10.1 Berlin has been released. Our Open Source projects, including mORMot and SynPDF and their associated documentation have been updated to support this new revision. Any additional feedback is welcome, as usual!
April 2016 (2)
2016-04-09
AES-256 based Cryptographically Secure Pseudo-Random Number Generator (CSPRNG)
2016-04-09. Open Source › mORMot Framework
Everyone knows about the pascal random()
function.
It returns some numbers, using a linear
congruential generator, with a multiplier of 134775813,
in its Delphi implementation.
It is fast, but not really secure. Output is very predictable, especially if
you forgot to execute the RandSeed()
procedure.
In real world scenarios, safety always requires random numbers, e.g. for
key/nonce/IV/salt/challenge generation.
The less predictable, the better.
We just included a Cryptographically
Secure Pseudo-Random Number Generator (CSPRNG) into our
SynCrypto.pas unit.
The TAESPRNG class would use real system entropy to generate
a sequence of pseudorandom bytes, using AES-256, so returning highly
unpredictable content.
