JSS SecureRandom
Endi S. Dewata edited this page Jul 29, 2022
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SecureRandom is a generic Java API to access random number generator functionality.
SecureRandom random = new SecureRandom();
By default SecureRandom will use NativePRNG implementation which uses /dev/urandom for nextBytes() and /dev/random to generateSeed().
The API can be used to access other random number generators using the following interface:
SecureRandom random = SecureRandom.getInstance(algorithm, provider);
SHA1PRNG is a pure Java random number generator. It is not as strong as the algorithms used by approved DRBG mechanisms in NIST SP800-90.
There is a new version of SecureRandom in Java 9, JEP-273, which adds SHA-512 and AES-256 based off NIST SP800-90.
JSS provides a FIPS 140-2 compliant random number generator called PK11SecureRandom which can be used as follows:
SecureRandom random = SecureRandom.getInstance("pkcs11prng", "Mozilla-JSS");