From patchwork Mon Jun 1 11:44:02 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Willi X-Patchwork-Id: 6521491 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: X-Original-To: patchwork-linux-crypto@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 631B09F1C1 for ; Mon, 1 Jun 2015 12:24:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7F707205EE for ; Mon, 1 Jun 2015 12:24:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 98E4620529 for ; Mon, 1 Jun 2015 12:24:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751750AbbFAMYm (ORCPT ); Mon, 1 Jun 2015 08:24:42 -0400 Received: from revosec.ch ([5.148.177.19]:40479 "EHLO revosec.ch" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751142AbbFAMYl (ORCPT ); Mon, 1 Jun 2015 08:24:41 -0400 Received: from 143.204.173.83.static.wline.lns.sme.cust.swisscom.ch ([83.173.204.143] helo=localhost.localdomain) by revosec.ch with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA256:128) (Exim 4.80) (envelope-from ) id 1YzO91-0007hp-Oh; Mon, 01 Jun 2015 13:44:39 +0200 From: Martin Willi To: Herbert Xu , Steffen Klassert , linux-crypto@vger.kernel.org Subject: [PATCH 7/9] crypto: chacha20poly1305 - Add an IPsec variant for RFC7539 AEAD Date: Mon, 1 Jun 2015 13:44:02 +0200 Message-Id: <1433159044-30753-8-git-send-email-martin@strongswan.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1433159044-30753-1-git-send-email-martin@strongswan.org> References: <1433159044-30753-1-git-send-email-martin@strongswan.org> X-RPR-Rewrite: reverse-path rewritten by revosec.ch Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP draft-ietf-ipsecme-chacha20-poly1305 defines the use of ChaCha20/Poly1305 in ESP. It uses additional four byte key material as a salt, which is then used with an 8 byte IV to form the ChaCha20 nonce as defined in the RFC7539. Signed-off-by: Martin Willi --- crypto/chacha20poly1305.c | 26 +++++++++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/crypto/chacha20poly1305.c b/crypto/chacha20poly1305.c index 6171cf1..05fbc59 100644 --- a/crypto/chacha20poly1305.c +++ b/crypto/chacha20poly1305.c @@ -627,6 +627,11 @@ static struct crypto_instance *rfc7539_alloc(struct rtattr **tb) return chachapoly_alloc(tb, "rfc7539", 12); } +static struct crypto_instance *rfc7539esp_alloc(struct rtattr **tb) +{ + return chachapoly_alloc(tb, "rfc7539esp", 8); +} + static void chachapoly_free(struct crypto_instance *inst) { struct chachapoly_instance_ctx *ctx = crypto_instance_ctx(inst); @@ -643,13 +648,31 @@ static struct crypto_template rfc7539_tmpl = { .module = THIS_MODULE, }; +static struct crypto_template rfc7539esp_tmpl = { + .name = "rfc7539esp", + .alloc = rfc7539esp_alloc, + .free = chachapoly_free, + .module = THIS_MODULE, +}; + static int __init chacha20poly1305_module_init(void) { - return crypto_register_template(&rfc7539_tmpl); + int err; + + err = crypto_register_template(&rfc7539_tmpl); + if (err) + return err; + + err = crypto_register_template(&rfc7539esp_tmpl); + if (err) + crypto_unregister_template(&rfc7539_tmpl); + + return err; } static void __exit chacha20poly1305_module_exit(void) { + crypto_unregister_template(&rfc7539esp_tmpl); crypto_unregister_template(&rfc7539_tmpl); } @@ -661,3 +684,4 @@ MODULE_AUTHOR("Martin Willi "); MODULE_DESCRIPTION("ChaCha20-Poly1305 AEAD"); MODULE_ALIAS_CRYPTO("chacha20poly1305"); MODULE_ALIAS_CRYPTO("rfc7539"); +MODULE_ALIAS_CRYPTO("rfc7539esp");