Hi Ted, On 10/03/2013 07:51 PM, Theodore Ts'o wrote: > On Thu, Oct 03, 2013 at 05:52:33PM +0300, Stanimir Varbanov wrote: >> This patch set adds hardware RNG driver wich is used to control the >> Qualcomm's PRNG hardware block. >> The first patch document the DT bindings needed to sucessfuly probe >> the driver and the second patch adds the driver. > > Is this really a PRNG (pseudo-random number generator)? What are the > guarantees which Qualcomm is providing for the PRNG? If it's really a > PRNG such as AES(i++, NSA_KEY), then kudo to Qualcomm for being > honest. > > If it is supposed to be (or at least claimed to be) a secure random > number generator ala RDRAND suitable for use in cryptographic > applications, calling it a PRNG is going to be a bit misleading. I guess that it should follow NIST 800-90 recommendation, but I'm not aware what DRBG mechanism is used. To be honest I really don't know the hardware implementation details. I put PRNG abbreviation in the cover letter just because I saw that defines for register offsets are prefixed with PRNG_*. I could rename all occurrences of PRNG to RNG. Is that will be enough to avoid confusions? regadrs, Stan -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
