mirror of
https://github.com/monero-project/monero-docs.git
synced 2024-12-23 03:59:23 +00:00
25 lines
1.1 KiB
Markdown
25 lines
1.1 KiB
Markdown
---
|
|
title: Monero Pseudorandom Number Generator
|
|
---
|
|
# Monero Pseudorandom Number Generator
|
|
|
|
Monero uses PRNG based on the Keccak hashing function.
|
|
Basically, output of the previous hashing round is input for the next one.
|
|
|
|
The initial seed comes from entropy sources provided by operating system.
|
|
On Linux and MacOS the seed comes from `/dev/urandom`.
|
|
On Windows the WinAPI `CryptGenRandom` call is used for seeding.
|
|
|
|
There is no reseeding.
|
|
|
|
## Caveats
|
|
|
|
* This concerns the reference C++ implementation of Monero.
|
|
Please note there are many alternative implementations of private key generation,
|
|
including JavaScript, Python, Android/Java. These should be researched case by case for correctness.
|
|
* In Monero source code you can also find libsodium based random bytes generator. It is part of the embedded library and apparently is not used in actual Monero code.
|
|
|
|
## Reference
|
|
|
|
* [Source code](https://github.com/monero-project/monero/blob/1a4298685aa9e694bc555ae69be59d14d3790465/src/crypto/random.c)
|
|
* [StackExchange answer](https://monero.stackexchange.com/a/2076/3218)
|