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([148.252.133.210]) by smtp.gmail.com with ESMTPSA id v18-20020a5d6792000000b003063a92bbf5sm9239422wru.70.2023.07.09.07.00.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Jul 2023 07:00:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1688911217; x=1691503217; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=KoRRyATrWAHPOTZCqqegjuftHV3UOSCP+hcOlJjHRIM=; b=kvZpIbfYGNIy+I0rYdHKhsssTNTeTEPeI1zevU6MZmSvx43gyg+yzp/k8kWxhr1kQ9 9XMUVORgLe9izVrkXwmjNgDToNqGs+CEv06mEsP+cC/plk27PNCTKBQZ7qAUZJgFayXS yIYutJs5Xa4gkuXm6ZybTn83C0dMpDOEYMGjJ0Lb8ftsvIm6mciLV4Pvdi5qFQfoD2nx DQ3bNw0FhfBVC5PbbTW9GTUReWfslLHNDfF1Z+flcQ0aw+znxySHEkfr+ElbR/Lc9dS3 BkQEgdmJxYh0magkCY5AN1DknLOmTrUcqu0XgxsDJfBYwFtLefU86Yf/oB/mXhQTu9QF bCFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688911217; x=1691503217; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=KoRRyATrWAHPOTZCqqegjuftHV3UOSCP+hcOlJjHRIM=; b=iEbULeJ9v8vI+G1FGNw2+fzugx2hF5LFPdeZubWF2c4v3Fh95OlH10ezeCZjBjyiGC DoJlPErV/X+B2Yy/dL0y8n2Y39GWkEvuY/nuVOe5kRCFsx3IjK5PUptrYKTXi9xdnZHp V/bZ2nQmr5ktp8VLvD2VO1WKJHLTyfsuF7tbK5PIdzTt22DR2xI8G+u6js/oazSDfjZ7 ykIDYgztjJZbzSjgW/eQgP0VtSejQGDFxz7qyg4jPXztByBlWZLl7fFuJ62lpeQWx42I PVDkgDMG2I8C6Xy51to6xE9wbHXPZl8YeJ3HCOoXfGyOYXb7x1o30cQ8j/HfJ+mz5sTR sgEw== X-Gm-Message-State: ABy/qLYzmqeyK800cGDwHSdmi7UrAnNd0j2rSovodzdpATemrBxbab0a hTg9rwkeLswEbfr+MyByTSPb7cACwGxA6DHK9otQUw== X-Google-Smtp-Source: APBJJlF/g8xGDqccKnmb6bPkNFFImiNSQKX73xWLziI9zCYtfGgsHkpfAlVhyuvj3GDLJ2MCJgEZdQ== X-Received: by 2002:a5d:428b:0:b0:315:94ea:31ad with SMTP id k11-20020a5d428b000000b0031594ea31admr2199514wrq.66.1688911217059; Sun, 09 Jul 2023 07:00:17 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PULL 35/37] crypto: Implement aesdec_IMC with AES_imc_rot Date: Sun, 9 Jul 2023 14:59:43 +0100 Message-Id: <20230709135945.250311-36-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230709135945.250311-1-richard.henderson@linaro.org> References: <20230709135945.250311-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::432; envelope-from=richard.henderson@linaro.org; helo=mail-wr1-x432.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1688911252819100001 This method uses one uint32_t * 256 table instead of 4, which means its data cache overhead is less. Acked-by: Daniel P. Berrang=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- crypto/aes.c | 42 +++++++++++++++++++++--------------------- 1 file changed, 21 insertions(+), 21 deletions(-) diff --git a/crypto/aes.c b/crypto/aes.c index 00e16d3f92..d93883eb18 100644 --- a/crypto/aes.c +++ b/crypto/aes.c @@ -1377,39 +1377,39 @@ aesdec_IMC_swap(AESState *r, const AESState *st, bo= ol swap) bool be =3D HOST_BIG_ENDIAN ^ swap; uint32_t t; =20 - /* Note that AES_imc is encoded for big-endian. */ - t =3D (AES_imc[st->b[swap_b ^ 0x0]][0] ^ - AES_imc[st->b[swap_b ^ 0x1]][1] ^ - AES_imc[st->b[swap_b ^ 0x2]][2] ^ - AES_imc[st->b[swap_b ^ 0x3]][3]); - if (!be) { + /* Note that AES_imc_rot is encoded for little-endian. */ + t =3D ( AES_imc_rot[st->b[swap_b ^ 0x0]] ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0x1]], 8) ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0x2]], 16) ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0x3]], 24)); + if (be) { t =3D bswap32(t); } r->w[swap_w ^ 0] =3D t; =20 - t =3D (AES_imc[st->b[swap_b ^ 0x4]][0] ^ - AES_imc[st->b[swap_b ^ 0x5]][1] ^ - AES_imc[st->b[swap_b ^ 0x6]][2] ^ - AES_imc[st->b[swap_b ^ 0x7]][3]); - if (!be) { + t =3D ( AES_imc_rot[st->b[swap_b ^ 0x4]] ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0x5]], 8) ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0x6]], 16) ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0x7]], 24)); + if (be) { t =3D bswap32(t); } r->w[swap_w ^ 1] =3D t; =20 - t =3D (AES_imc[st->b[swap_b ^ 0x8]][0] ^ - AES_imc[st->b[swap_b ^ 0x9]][1] ^ - AES_imc[st->b[swap_b ^ 0xA]][2] ^ - AES_imc[st->b[swap_b ^ 0xB]][3]); - if (!be) { + t =3D ( AES_imc_rot[st->b[swap_b ^ 0x8]] ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0x9]], 8) ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0xA]], 16) ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0xB]], 24)); + if (be) { t =3D bswap32(t); } r->w[swap_w ^ 2] =3D t; =20 - t =3D (AES_imc[st->b[swap_b ^ 0xC]][0] ^ - AES_imc[st->b[swap_b ^ 0xD]][1] ^ - AES_imc[st->b[swap_b ^ 0xE]][2] ^ - AES_imc[st->b[swap_b ^ 0xF]][3]); - if (!be) { + t =3D ( AES_imc_rot[st->b[swap_b ^ 0xC]] ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0xD]], 8) ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0xE]], 16) ^ + rol32(AES_imc_rot[st->b[swap_b ^ 0xF]], 24)); + if (be) { t =3D bswap32(t); } r->w[swap_w ^ 3] =3D t; --=20 2.34.1