Received: by 2002:ac0:a581:0:0:0:0:0 with SMTP id m1-v6csp2537217imm; Sat, 30 Jun 2018 23:29:07 -0700 (PDT) X-Google-Smtp-Source: ADUXVKKE7xPc6+HSL9U1kI4RLz2oPd4ybVBUWQ/SvH45B/MwT2WPc/ruNJ67OeXaf3rpzD329Zn0 X-Received: by 2002:a17:902:7896:: with SMTP id q22-v6mr20708437pll.243.1530426547580; Sat, 30 Jun 2018 23:29:07 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1530426547; cv=none; d=google.com; s=arc-20160816; b=s8aTtW8/TYhFZqhLl32etuVy4nfQ0H127r8n6K1DHZuKsXgmONGkOzPtTOpTw6XU5l 9dSehKMvrQ7F7PVFkQ89zDl6f1xqKI9lo7/8sU26bpMQ22ba3YxlQycztoWvr10VhxEz OQAGe9ViROEMQl9em5i+jzAZz6dOz2GfWQdRD3VivF3bW2eTSDZjLg+XSBzzhcG9Wyq0 tWIB0sgnbYZQ7+ei80tMsg3W5cClFG+7Bi2ULRspikC8Er7zuKkxAukJmOHIu2P/WznB fVY9YvPDPM0GR3FStOQXMZjEwXvjxFJh3YHL5tEWCStqrH4BaSNfCO/7EDSbnDIVAYRO HZ+Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:arc-authentication-results; bh=A1ulM1AFnWtTgt/XnZX2uTIakkFSoocsh2JfWxrLcjA=; b=Dupjpp6dbGycqVrabtt02qVGJZ51VWf7PJ+pH0h80uBta/KE5pDlg0w0TTCho05c9I wtYsqqNZcNTX8PNETguLafX8+WaboiGgMhvvfJtVa+1uzuVDzlLIkm8QvdFtQYmwjxpl ROCAQ9fbUqZRjKw14ZIRbKANDoIoFgcJ3Dp546W+PUe6FMjBdjZWcwZK2G2ZFbJW+A9w a65h+B7gQFVN8qE/JriMiKCNxmua5kKeOVVywhxKYmwOt0i4q4qrskztnyGYra8TT0WK H4Y4ZXN9blDBXDSuaAsYtWO19a5DoSZ2ehAjjYU4tvpMvYa6TLN9ubeZZ5eXR/ZKFcwd /Huw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id s73-v6si12437364pfs.157.2018.06.30.23.28.53; Sat, 30 Jun 2018 23:29:07 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752146AbeGAG1t (ORCPT + 99 others); Sun, 1 Jul 2018 02:27:49 -0400 Received: from orcrist.hmeau.com ([104.223.48.154]:53486 "EHLO deadmen.hmeau.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751576AbeGAG1q (ORCPT ); Sun, 1 Jul 2018 02:27:46 -0400 Received: from gondobar.mordor.me.apana.org.au ([192.168.128.4] helo=gondobar) by deadmen.hmeau.com with esmtps (Exim 4.89 #2 (Debian)) id 1fZVpg-0006VZ-Vs; Sun, 01 Jul 2018 14:27:37 +0800 Received: from herbert by gondobar with local (Exim 4.89) (envelope-from ) id 1fZVpe-0007qN-GX; Sun, 01 Jul 2018 14:27:34 +0800 Date: Sun, 1 Jul 2018 14:27:34 +0800 From: Herbert Xu To: Vinod Cc: Timur Tabi , Stanimir Varbanov , linux-crypto@vger.kernel.org, lkml , Matt Mackall , Arnd Bergmann , Greg Kroah-Hartman , linux-arm-msm@vger.kernel.org Subject: Re: [PATCH 3/3] hwrng: msm - Add support for prng v2 Message-ID: <20180701062734.s6ldsbhi42hnn6x6@gondor.apana.org.au> References: <20180618141259.23141-1-vkoul@kernel.org> <20180618141259.23141-4-vkoul@kernel.org> <20180619142853.wgi5easw4zv6ttrb@gondor.apana.org.au> <966e9cd4-70a3-8d54-df0f-16df3df45fb5@linaro.org> <20180621101506.rnklbtapvfdev4xb@gondor.apana.org.au> <20180621115312.rfmbitrhqi44wu5w@gondor.apana.org.au> <20180629083732.GB22377@vkoul-mobl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180629083732.GB22377@vkoul-mobl> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 29, 2018 at 02:07:32PM +0530, Vinod wrote: > > I think Stan did bring this point earlier that PRNG is compliant to > FIPS-140-2. So it can be used by rng clients for various purposes but > should not be fed to dev/random as the hw_random does. > > Herbert, can you please confirm.. Yes this is a PRNG. A hardware RNG should return 1 bit of entropy per bit of output. Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt