The “e-sushi’s entropy beacon” project is, simply stated, a cryptographically secure randomness beacon which is publically accessible.
Each beacon output request will return 256 bits of cryptographically secure and therefore unique randomness, presented as 64 HEX-encoded plaintext characters.
The entropy itself comes from the webserver’s entropy pool (/dev/urandom), which is then fed through a keyed hash function using the previously output as key. For the techies among you: Output = HMAC_SHA256( PreviousOutput, 256BitsOfDevUrandom)
© 1996–2019 Mike Edward Moras (e-sushi)