dd using RDRAND instruction of x86 CPUs.

dd_rand of=<file> bs=<block size> count=<number of blocks>

Arguments:

• of: output file
• bs: block size (in bytes)
• count: number of blocks

Example creating a file a.bin filled with random numbers total of 2048 bytes:

dd_rand of=a.bin bs=1024 count=2

The assembly functions have been generated in rdrand-measurement-gen.