Examples of Random Number Generators
Disclaimer: Commercial products depicted here are purely examples and do not represent endorsement by the National Institute of Standards and Technology.

• Hardware Based Random Number Generators

• SG100
• Hotbits
• ComScire QNG
• Bell Labs

• Software Based Random Number Generators (Pseudorandom Number Generators)

 
• PRNGs based on hash functions
• Counterpane Labs' Yarrow PRNG
• FIPS 186 Appendix 3: Random Number Generation for the DSA (SHA-1 based)

 
• PRNGs based on symmetric block ciphers
• FIPS 186 Appendix 3: Random Number Generation for the DSA (DES based)
• ANSI X9.17 (3-DES based)

RNG Project  NIST Computer Security Division
Last Updated: March 21, 2002.