Hash_DRBG

configname: CONFIG_CRYPTO_DRBG_HASH

Linux Kernel Configuration
└─>Cryptographic API
└─>Random number generation
└─>NIST SP800-90A DRBG (Deterministic Random Bit Generator)
└─>Hash_DRBG
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Hash_DRBG variant as defined in NIST SP800-90A.

This uses the SHA-1, SHA-256, SHA-384, or SHA-512 hash algorithms.