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client-ip=149.6.166.170;\n helo=proxy.softathome.com; pr=C","From":"Philippe Reynes ","To":"marko.makela@iki.fi, jonny.green@keytechinc.com, raymondmaoca@gmail.com,\n trini@konsulko.com","Cc":"u-boot@lists.denx.de,\n\tPhilippe Reynes ","Subject":"[RFC PATCH v2 0/9] add software ecdsa support","Date":"Thu, 19 Feb 2026 14:25:43 +0100","Message-ID":"<20260219132552.1499698-1-philippe.reynes@softathome.com>","X-Mailer":"git-send-email 2.43.0","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-EOPAttributedMessage":"0","X-MS-PublicTrafficType":"Email","X-MS-TrafficTypeDiagnostic":"PA1PEPF000CC3FA:EE_|MRZP264MB2699:EE_","Content-Type":"text/plain","X-MS-Office365-Filtering-Correlation-Id":"f024d866-13d3-4710-cbd7-08de6fba71d5","X-MS-Exchange-SenderADCheck":"1","X-MS-Exchange-AntiSpam-Relay":"0","X-Microsoft-Antispam":"BCL:0;\n ARA:13230040|1800799024|82310400026|376014|36860700013|7142099003;","X-Microsoft-Antispam-Message-Info":"\n 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","X-Forefront-Antispam-Report":"CIP:149.6.166.170; 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Ip=[149.6.166.170];\n Helo=[proxy.softathome.com]","X-MS-Exchange-CrossTenant-AuthSource":"PA1PEPF000CC3FA.FRAP264.PROD.OUTLOOK.COM","X-MS-Exchange-CrossTenant-AuthAs":"Anonymous","X-MS-Exchange-CrossTenant-FromEntityHeader":"HybridOnPrem","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"MRZP264MB2699","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" ","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"},"content":"This serie adds the support of ecdsa with software\nusing mbedtls. So boards without ecdsa hardware may\nalso use signature with ecdsa.\n\nTo add the support of ecdsa with mbedtls, I have:\n- enabled ecdsa in mbedtls\n- add a function sw_ecdsa_verify that uses mbedtls\n- add a driver sw_ecdsa that call sw_ecdsa_verify\n\nI have tested this code with sandbox, and I have\nfollowed those steps:\n\n0) build u-boot using sandbox_defconfig and adding those options:\nCONFIG_ECDSA_SW=y\nCONFIG_ECDSA_MBEDTLS=y\nCONFIG_ECDSA=y\nCONFIG_ECDSA_VERIFY=y\n\n1) add a signature node to an its file\n\tsignature-256 {\n\t\talgo = \"sha256,ecdsa256\";\n\t\tkey-name-hint = \"private-key-256\";\n\t};\n\n2) generate an ecdsa key\nopenssl ecparam -name prime256v1 -genkey -noout -out private-key-256.pem\n\n3) create the itb file\n./tools/mkimage -f -k . -K arch/sandbox/dts/test.dtb \n\n4) launch sandbox u-boot\n\n./u-boot -d arch/sandbox/dts/test.dtb\n\n5) on sandbox u-boot prompt, load the itb and launch bootm on it\n\n=> host load hostfs - 1000000 uboot-ecdsa.itb\n4628674 bytes read in 1 ms (4.3 GiB/s)\n=> bootm 1000000\n...\n...\n Verifying Hash Integrity ... sha256,ecdsa256:private-key-256+ OK\n\n\nI have tested with success ecdsa256 and ecdsa384,\nbut there is an issue with secp521r1. \n\nChanges in v2:\n- move ECDSA_MBEDTLS to MBEDTLS_LIB_X509\n- rename lib/mbedtls/sw_ecdsa.c to lib/mbedtls/ecdsa.c\n- enhance dependancies for ECDSA_MBEDTLS\n- fix support of ecdsa521/secp521r1\n- add vboot test using ecdsa\n\n\nPhilippe Reynes (9):\n mbedtls: enable support of ecc\n ecdsa: initial support of ecdsa using mbedtls\n test: lib: sw_ecdsa: add initial test\n drivers: crypto: add software ecdsa support\n ecdsa: fix support of secp521r1\n test: dm: ecdsa.c: clean this test as software ecdsa is now\n implemented\n configs: sandbox: enable the software ecdsa driver\n test: py: vboot: prepare integration test for ecdsa\n test: vboot: add test for ecdsa\n\n configs/amd_versal2_virt_defconfig | 1 +\n configs/qemu_arm64_lwip_defconfig | 1 +\n configs/sandbox_defconfig | 1 +\n configs/starfive_visionfive2_defconfig | 1 +\n configs/xilinx_versal_net_virt_defconfig | 1 +\n configs/xilinx_versal_virt_defconfig | 1 +\n configs/xilinx_zynqmp_kria_defconfig | 1 +\n configs/xilinx_zynqmp_virt_defconfig | 1 +\n drivers/crypto/Kconfig | 2 +\n drivers/crypto/Makefile | 1 +\n drivers/crypto/ecdsa/Kconfig | 6 +\n drivers/crypto/ecdsa/Makefile | 6 +\n drivers/crypto/ecdsa/ecdsa-sw.c | 33 ++\n include/crypto/internal/sw_ecdsa.h | 14 +\n lib/ecdsa/ecdsa-libcrypto.c | 21 +-\n lib/ecdsa/ecdsa-verify.c | 24 +-\n lib/fdt-libcrypto.c | 2 +-\n lib/mbedtls/Kconfig | 16 +\n lib/mbedtls/Makefile | 19 +-\n lib/mbedtls/ecdsa.c | 94 ++++\n lib/mbedtls/mbedtls_def_config.h | 18 +\n test/dm/ecdsa.c | 18 +-\n test/lib/Makefile | 1 +\n test/lib/sw_ecdsa.c | 465 ++++++++++++++++++\n test/py/tests/test_fit_ecdsa.py | 2 +-\n test/py/tests/test_vboot.py | 128 +++--\n ....its => sign-configs-sha1-rsa2048-pss.its} | 0\n ...sha1.its => sign-configs-sha1-rsa2048.its} | 0\n .../vboot/sign-configs-sha256-ecdsa256.its | 45 ++\n .../vboot/sign-configs-sha256-ecdsa384.its | 45 ++\n .../vboot/sign-configs-sha256-ecdsa521.its | 45 ++\n ... sign-configs-sha256-rsa2048-pss-prod.its} | 0\n ...ts => sign-configs-sha256-rsa2048-pss.its} | 0\n ...56.its => sign-configs-sha256-rsa2048.its} | 0\n ...84.its => sign-configs-sha384-rsa3072.its} | 0\n ...s.its => sign-images-sha1-rsa2048-pss.its} | 0\n ...-sha1.its => sign-images-sha1-rsa2048.its} | 0\n .../vboot/sign-images-sha256-ecdsa256.its | 42 ++\n .../vboot/sign-images-sha256-ecdsa384.its | 42 ++\n .../vboot/sign-images-sha256-ecdsa521.its | 42 ++\n ...its => sign-images-sha256-rsa2048-pss.its} | 0\n ...256.its => sign-images-sha256-rsa2048.its} | 0\n ...384.its => sign-images-sha384-rsa3072.its} | 0\n tools/image-sig-host.c | 2 +-\n 44 files changed, 1062 insertions(+), 79 deletions(-)\n create mode 100644 drivers/crypto/ecdsa/Kconfig\n create mode 100644 drivers/crypto/ecdsa/Makefile\n create mode 100644 drivers/crypto/ecdsa/ecdsa-sw.c\n create mode 100644 include/crypto/internal/sw_ecdsa.h\n create mode 100644 lib/mbedtls/ecdsa.c\n create mode 100644 test/lib/sw_ecdsa.c\n rename test/py/tests/vboot/{sign-configs-sha1-pss.its => sign-configs-sha1-rsa2048-pss.its} (100%)\n rename test/py/tests/vboot/{sign-configs-sha1.its => sign-configs-sha1-rsa2048.its} (100%)\n create mode 100644 test/py/tests/vboot/sign-configs-sha256-ecdsa256.its\n create mode 100644 test/py/tests/vboot/sign-configs-sha256-ecdsa384.its\n create mode 100644 test/py/tests/vboot/sign-configs-sha256-ecdsa521.its\n rename test/py/tests/vboot/{sign-configs-sha256-pss-prod.its => sign-configs-sha256-rsa2048-pss-prod.its} (100%)\n rename test/py/tests/vboot/{sign-configs-sha256-pss.its => sign-configs-sha256-rsa2048-pss.its} (100%)\n rename test/py/tests/vboot/{sign-configs-sha256.its => sign-configs-sha256-rsa2048.its} (100%)\n rename test/py/tests/vboot/{sign-configs-sha384.its => sign-configs-sha384-rsa3072.its} (100%)\n rename test/py/tests/vboot/{sign-images-sha1-pss.its => sign-images-sha1-rsa2048-pss.its} (100%)\n rename test/py/tests/vboot/{sign-images-sha1.its => sign-images-sha1-rsa2048.its} (100%)\n create mode 100644 test/py/tests/vboot/sign-images-sha256-ecdsa256.its\n create mode 100644 test/py/tests/vboot/sign-images-sha256-ecdsa384.its\n create mode 100644 test/py/tests/vboot/sign-images-sha256-ecdsa521.its\n rename test/py/tests/vboot/{sign-images-sha256-pss.its => sign-images-sha256-rsa2048-pss.its} (100%)\n rename test/py/tests/vboot/{sign-images-sha256.its => sign-images-sha256-rsa2048.its} (100%)\n rename test/py/tests/vboot/{sign-images-sha384.its => sign-images-sha384-rsa3072.its} (100%)"}