User-space interface for hash algorithms

modulename: algif_hash.ko

configname: CONFIG_CRYPTO_USER_API_HASH

Linux Kernel Configuration
└─>Cryptographic API
└─>User-space interface for hash algorithms
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
This option enables the user-spaces interface for hash
algorithms.

source code:
crypto/algif_hash.c