[{"id":3679183,"web_url":"http://patchwork.ozlabs.org/comment/3679183/","msgid":"","list_archive_url":null,"date":"2026-04-20T02:12:50","subject":"Re: [v4,00/14] add software ecdsa support","submitter":{"id":6170,"url":"http://patchwork.ozlabs.org/api/people/6170/","name":"Simon Glass","email":"sjg@chromium.org"},"content":"Hi Philippe,\n\nOn 2026-04-17T13:02:04, Philippe Reynes wrote:\n\n> This serie adds the support of ecdsa with software using mbedtls.\n\nseries\n\n> ecdsa: fix support of secp521r1\n\nPatch 5 fixes secp521r1 support added in patches 1-4, suggesting the\ninitial implementation was incomplete. It would be cleaner to include\nfull secp521r1 support from the start in patches 2-4, making bisection\ncleaner and avoiding patches that claim ECDSA support but have broken\nsecp521r1.\n\nRegards,\nSimon","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256\n header.s=google header.b=oXLGPqn8;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de;\n envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org)","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=chromium.org","phobos.denx.de;\n spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de","phobos.denx.de;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=chromium.org header.i=@chromium.org\n header.b=\"oXLGPqn8\";\n\tdkim-atps=neutral","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=chromium.org","phobos.denx.de;\n spf=pass smtp.mailfrom=sjg@chromium.org"],"Received":["from phobos.denx.de (phobos.denx.de\n [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fzTYQ73Rqz1yGt\n\tfor ; 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Sun, 19 Apr 2026\n 19:13:23 -0700 (PDT)","MIME-Version":"1.0","References":"<20260417130204.49896-1-philippe.reynes@softathome.com>","In-Reply-To":"<20260417130204.49896-1-philippe.reynes@softathome.com>","From":"Simon Glass ","Date":"Mon, 20 Apr 2026 14:12:50 +1200","X-Gm-Features":"AQROBzDakq2nArwXfYl-yY_GJEz9fZyw2J9nDXBRURqr10VypoCGtOXse23xXzY","Message-ID":"\n ","Subject":"Re: [v4,00/14] add software ecdsa support","To":"philippe.reynes@softathome.com","Cc":"u-boot@lists.denx.de","Content-Type":"text/plain; charset=\"UTF-8\"","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"}},{"id":3679489,"web_url":"http://patchwork.ozlabs.org/comment/3679489/","msgid":"","list_archive_url":null,"date":"2026-04-20T17:13:14","subject":"Re: [PATCH v4 00/14] add software ecdsa support","submitter":{"id":91989,"url":"http://patchwork.ozlabs.org/api/people/91989/","name":"Raymond Mao","email":"raymondmaoca@gmail.com"},"content":"Hi Philippe,\n\nOn Fri, Apr 17, 2026 at 9:02 AM Philippe Reynes\n wrote:\n>\n> This serie adds the support of ecdsa with software\n> using mbedtls. So boards without ecdsa hardware may\n> also use signature with ecdsa.\n>\n> To 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>\n> I have tested this code with sandbox, and I have\n> followed those steps:\n>\n> 0) build u-boot using sandbox_defconfig and adding those options:\n> CONFIG_ECDSA_SW=y\n\nI think this kconfig is already removed from v4, please double check.\n\nRegards,\nRaymond\n\n> CONFIG_ECDSA_MBEDTLS=y\n> CONFIG_ECDSA=y\n> CONFIG_ECDSA_VERIFY=y\n>\n> 1) add a signature node to an its file\n> signature-256 {\n> algo = \"sha256,ecdsa256\";\n> key-name-hint = \"private-key-256\";\n> };\n>\n> 2) generate an ecdsa key\n> openssl ecparam -name prime256v1 -genkey -noout -out private-key-256.pem\n>\n> 3) create the itb file\n> ./tools/mkimage -f -k . -K arch/sandbox/dts/test.dtb \n>\n> 4) launch sandbox u-boot\n>\n> ./u-boot -d arch/sandbox/dts/test.dtb\n>\n> 5) on sandbox u-boot prompt, load the itb and launch bootm on it\n>\n> => host load hostfs - 1000000 uboot-ecdsa.itb\n> 4628674 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>\n> I have tested with success ecdsa256 and ecdsa384,\n> but there is an issue with secp521r1.\n>\n> Changes 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> Changes in v3:\n> - do not use _MBEDTLS in mbedtls_def_config.h\n> - check returns and remove mem leak in lib/mbedtls/ecdsa.c\n> - remove useless field *k in struct ecdsa_test_vector_s\n> - check returns in test/lib/ecdsa.c\n> - fix third parameter when calling sha*_csum_wd()\n> - add support of ecdsa in pre-load header\n>\n> Changes in v4:\n> - change some dependencies to enable ecc\n> - use ECDSA_MBEDTLS to build the ecdsa driver\n> - support ecdsa521 and secp521r1\n> - add a test calling ecdsa_verify for the ecdsa class\n> - merge patch 10 and 11 (support ecdsa pre-load for binman and tests)\n> - several code cleanup\n>\n>\n> Philippe Reynes (14):\n> mbedtls: enable support of ecc\n> ecdsa: initial support of ecdsa using mbedtls\n> test: lib: 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> test: py: vboot: prepare integration test for ecdsa\n> test: vboot: add test for ecdsa\n> tools: mkimage: pre-load: add support of ecdsa\n> tools: binman: pre-load: add support of ecdsa\n> boot: pre-load: add support of ecdsa\n> tools: preload_check_sign: add support of ecdsa\n> test: py: vboot: prepare test for global signature with ecdsa\n> test: py: vboot: add test for global signature with ecdsa\n>\n> boot/image-pre-load.c | 56 ++-\n> configs/sandbox_defconfig | 1 +\n> drivers/crypto/Makefile | 1 +\n> drivers/crypto/ecdsa/Makefile | 6 +\n> drivers/crypto/ecdsa/ecdsa-sw.c | 33 ++\n> include/crypto/ecdsa-uclass.h | 15 +-\n> include/crypto/internal/ecdsa.h | 28 ++\n> include/u-boot/sha256.h | 2 +\n> include/u-boot/sha512.h | 3 +\n> lib/ecdsa/Kconfig | 1 +\n> lib/ecdsa/ecdsa-libcrypto.c | 83 +++-\n> lib/ecdsa/ecdsa-verify.c | 64 ++-\n> lib/fdt-libcrypto.c | 2 +-\n> lib/mbedtls/Kconfig | 14 +\n> lib/mbedtls/Makefile | 20 +-\n> lib/mbedtls/ecdsa.c | 146 ++++++\n> lib/mbedtls/mbedtls_def_config.h | 17 +\n> test/dm/ecdsa.c | 104 +++-\n> test/lib/Makefile | 1 +\n> test/lib/ecdsa.c | 453 ++++++++++++++++++\n> test/py/tests/test_fit_ecdsa.py | 2 +-\n> test/py/tests/test_vboot.py | 143 +++---\n> .../tests/vboot/sandbox-binman-ecdsa256.dts | 24 +\n> .../tests/vboot/sandbox-binman-ecdsa384.dts | 24 +\n> .../tests/vboot/sandbox-binman-ecdsa521.dts | 24 +\n> ...pss.dts => sandbox-binman-rsa2048-pss.dts} | 0\n> ...-binman.dts => sandbox-binman-rsa2048.dts} | 0\n> .../vboot/sandbox-u-boot-global-ecdsa256.dts | 27 ++\n> .../vboot/sandbox-u-boot-global-ecdsa384.dts | 27 ++\n> .../vboot/sandbox-u-boot-global-ecdsa521.dts | 27 ++\n> ... => sandbox-u-boot-global-rsa2048-pss.dts} | 0\n> ....dts => sandbox-u-boot-global-rsa2048.dts} | 0\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/binman/etype/pre_load.py | 76 ++-\n> tools/binman/ftest.py | 50 ++\n> tools/binman/test/ecdsa521.pem | 7 +\n> tools/binman/test/security/pre_load_ecdsa.dts | 22 +\n> .../security/pre_load_ecdsa_invalid_algo.dts | 22 +\n> .../security/pre_load_ecdsa_invalid_key.dts | 22 +\n> .../security/pre_load_ecdsa_invalid_sha.dts | 22 +\n> tools/image-host.c | 79 ++-\n> tools/image-sig-host.c | 7 +\n> tools/preload_check_sign.c | 29 ++\n> 59 files changed, 1810 insertions(+), 135 deletions(-)\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/ecdsa.h\n> create mode 100644 lib/mbedtls/ecdsa.c\n> create mode 100644 test/lib/ecdsa.c\n> create mode 100644 test/py/tests/vboot/sandbox-binman-ecdsa256.dts\n> create mode 100644 test/py/tests/vboot/sandbox-binman-ecdsa384.dts\n> create mode 100644 test/py/tests/vboot/sandbox-binman-ecdsa521.dts\n> rename test/py/tests/vboot/{sandbox-binman-pss.dts => sandbox-binman-rsa2048-pss.dts} (100%)\n> rename test/py/tests/vboot/{sandbox-binman.dts => sandbox-binman-rsa2048.dts} (100%)\n> create mode 100644 test/py/tests/vboot/sandbox-u-boot-global-ecdsa256.dts\n> create mode 100644 test/py/tests/vboot/sandbox-u-boot-global-ecdsa384.dts\n> create mode 100644 test/py/tests/vboot/sandbox-u-boot-global-ecdsa521.dts\n> rename test/py/tests/vboot/{sandbox-u-boot-global-pss.dts => sandbox-u-boot-global-rsa2048-pss.dts} (100%)\n> rename test/py/tests/vboot/{sandbox-u-boot-global.dts => sandbox-u-boot-global-rsa2048.dts} (100%)\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%)\n> create mode 100644 tools/binman/test/ecdsa521.pem\n> create mode 100644 tools/binman/test/security/pre_load_ecdsa.dts\n> create mode 100644 tools/binman/test/security/pre_load_ecdsa_invalid_algo.dts\n> create mode 100644 tools/binman/test/security/pre_load_ecdsa_invalid_key.dts\n> create mode 100644 tools/binman/test/security/pre_load_ecdsa_invalid_sha.dts\n>\n> --\n> 2.43.0\n>","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=lQ+YVRxj;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=85.214.62.61; helo=phobos.denx.de;\n envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org)","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=gmail.com","phobos.denx.de;\n spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de","phobos.denx.de;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.b=\"lQ+YVRxj\";\n\tdkim-atps=neutral","phobos.denx.de;\n dmarc=pass (p=none dis=none) header.from=gmail.com","phobos.denx.de;\n spf=pass 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