{"id":2225954,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2225954/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/patch/20260421210954.1170437-11-philippe.reynes@softathome.com/","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/1.2/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260421210954.1170437-11-philippe.reynes@softathome.com>","list_archive_url":null,"date":"2026-04-21T21:09:49","name":"[v5,10/15] tools: mkimage: pre-load: add support of ecdsa","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"1706361564525f94cec03af438aec42310106aed","submitter":{"id":74351,"url":"http://patchwork.ozlabs.org/api/1.2/people/74351/?format=json","name":"Philippe Reynes","email":"philippe.reynes@softathome.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/20260421210954.1170437-11-philippe.reynes@softathome.com/mbox/","series":[{"id":500895,"url":"http://patchwork.ozlabs.org/api/1.2/series/500895/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/list/?series=500895","date":"2026-04-21T21:09:51","name":"add software ecdsa support","version":5,"mbox":"http://patchwork.ozlabs.org/series/500895/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2225954/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2225954/checks/","tags":{},"related":[],"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=softathome1.onmicrosoft.com header.i=@softathome1.onmicrosoft.com\n header.a=rsa-sha256 header.s=selector1-softathome1-onmicrosoft-com\n header.b=b7djlnJW;\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; 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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, simon.glass@canonical.com","Cc":"u-boot@lists.denx.de, Philippe Reynes ,\n Simon Glass ","Subject":"[PATCH v5 10/15] tools: mkimage: pre-load: add support of ecdsa","Date":"Tue, 21 Apr 2026 23:09:49 +0200","Message-ID":"<20260421210954.1170437-11-philippe.reynes@softathome.com>","X-Mailer":"git-send-email 2.43.0","In-Reply-To":"<20260421210954.1170437-1-philippe.reynes@softathome.com>","References":"<20260421210954.1170437-1-philippe.reynes@softathome.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-EOPAttributedMessage":"0","X-MS-PublicTrafficType":"Email","X-MS-TrafficTypeDiagnostic":"MR1PEPF00000D5A:EE_|MR1PPF68BB94804:EE_","Content-Type":"text/plain","X-MS-Office365-Filtering-Correlation-Id":"465d950b-6f32-475d-e126-08de9fea57fe","X-MS-Exchange-SenderADCheck":"1","X-MS-Exchange-AntiSpam-Relay":"0","X-Microsoft-Antispam":"BCL:0;\n ARA:13230040|376014|36860700016|1800799024|82310400026|22082099003|18002099003|56012099003;","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":"MR1PEPF00000D5A.FRAP264.PROD.OUTLOOK.COM","X-MS-Exchange-CrossTenant-AuthAs":"Anonymous","X-MS-Exchange-CrossTenant-FromEntityHeader":"HybridOnPrem","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"MR1PPF68BB94804","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":"Right now, mkimage can only create pre-load header\nusing rsa. We add the support of ecdsa.\n\nReviewed-by: Simon Glass \nSigned-off-by: Philippe Reynes \n---\nv3:\n- initial version\nv4:\n- use pre_load_noffset (do not compute it again)\n- release memory allocated with strdup\n- clean code\nv5:\n- check checksum and algo before using them\n\n lib/ecdsa/ecdsa-libcrypto.c | 29 +++++++++---\n tools/image-host.c | 92 ++++++++++++++++++++++++++++++++-----\n 2 files changed, 103 insertions(+), 18 deletions(-)","diff":"diff --git a/lib/ecdsa/ecdsa-libcrypto.c b/lib/ecdsa/ecdsa-libcrypto.c\nindex 41590d22a51..0c7d1809a05 100644\n--- a/lib/ecdsa/ecdsa-libcrypto.c\n+++ b/lib/ecdsa/ecdsa-libcrypto.c\n@@ -505,14 +505,9 @@ int ecdsa_verify(struct image_sign_info *info,\n \treturn ret;\n }\n \n-static int do_add(struct signer *ctx, void *fdt, const char *key_node_name,\n-\t\t struct image_sign_info *info)\n+static int search_key_node(void *fdt, const char *key_node_name)\n {\n-\tint signature_node, key_node, ret, key_bits;\n-\tconst char *curve_name;\n-\tconst EC_GROUP *group;\n-\tconst EC_POINT *point;\n-\tBIGNUM *x, *y;\n+\tint signature_node, key_node;\n \n \tsignature_node = fdt_subnode_offset(fdt, 0, FIT_SIG_NODENAME);\n \tif (signature_node == -FDT_ERR_NOTFOUND) {\n@@ -547,6 +542,26 @@ static int do_add(struct signer *ctx, void *fdt, const char *key_node_name,\n \t\treturn key_node;\n \t}\n \n+\treturn key_node;\n+}\n+\n+static int do_add(struct signer *ctx, void *fdt, const char *key_node_name,\n+\t\t struct image_sign_info *info)\n+{\n+\tint key_node, ret, key_bits;\n+\tconst char *curve_name;\n+\tconst EC_GROUP *group;\n+\tconst EC_POINT *point;\n+\tBIGNUM *x, *y;\n+\n+\tif (info->required_keynode >= 0) {\n+\t\tkey_node = info->required_keynode;\n+\t} else {\n+\t\tkey_node = search_key_node(fdt, key_node_name);\n+\t\tif (key_node < 0)\n+\t\t\treturn key_node;\n+\t}\n+\n \tgroup = EC_KEY_get0_group(ctx->ecdsa_key);\n \tkey_bits = EC_GROUP_order_bits(group);\n \tcurve_name = OBJ_nid2sn(EC_GROUP_get_curve_name(group));\ndiff --git a/tools/image-host.c b/tools/image-host.c\nindex f5681d6c1f9..ae35a75d5a6 100644\n--- a/tools/image-host.c\n+++ b/tools/image-host.c\n@@ -13,6 +13,7 @@\n #include \n #include \n #include \n+#include \n \n #if CONFIG_IS_ENABLED(FIT_SIGNATURE)\n #include \n@@ -1245,13 +1246,74 @@ err_cert:\n \treturn ret;\n }\n \n+static int fit_pre_load_data_key_rsa(const char *keydir, void *keydest,\n+\t\t\t\t int pre_load_noffset, const void *key_name)\n+{\n+\tunsigned char *pubkey = NULL;\n+\tint ret, pubkey_len;\n+\n+\t/* Read public key */\n+\tret = read_pub_key(keydir, key_name, &pubkey, &pubkey_len);\n+\tif (ret < 0)\n+\t\tgoto out;\n+\n+\t/* Add the public key to the device tree */\n+\tret = fdt_setprop(keydest, pre_load_noffset, \"public-key\",\n+\t\t\t pubkey, pubkey_len);\n+\tif (ret)\n+\t\tfprintf(stderr, \"Can't set public-key in node %s (ret = %d)\\n\",\n+\t\t\tIMAGE_PRE_LOAD_PATH, ret);\n+ out:\n+\treturn ret;\n+}\n+\n+static int fit_pre_load_data_key_ecdsa(const char *keydir, void *keydest,\n+\t\t\t\t int pre_load_noffset, const void *key_name,\n+\t\t\t\t const void *algo_name)\n+{\n+\tstruct image_sign_info info;\n+\tint node, ret = 0;\n+\n+\tmemset(&info, 0, sizeof(info));\n+\tinfo.keydir = keydir;\n+\tinfo.keyname = strdup(key_name);\n+\tinfo.name = strdup(algo_name);\n+\tinfo.checksum = image_get_checksum_algo(algo_name);\n+\tif (!info.checksum) {\n+\t\tfprintf(stderr, \"Can't find valid checksum from %s\\n\",\n+\t\t\t(char *)algo_name);\n+\t\tret = -EINVAL;\n+\t\tgoto out;\n+\t}\n+\tinfo.crypto = image_get_crypto_algo(algo_name);\n+\tif (!info.crypto) {\n+\t\tfprintf(stderr, \"Can't find valid crypto from %s\\n\",\n+\t\t\t(char *)algo_name);\n+\t\tret = -EINVAL;\n+\t\tgoto out;\n+\t}\n+\tinfo.required_keynode = pre_load_noffset;\n+\n+\tnode = ecdsa_add_verify_data(&info, keydest);\n+\tif (node < 0) {\n+\t\tfprintf(stderr, \"Can't add verify data: err = %d\\n\", node);\n+\t\tret = -EIO;\n+\t}\n+\n+ out:\n+\tfree((void *)info.keyname);\n+\tfree((void *)info.name);\n+\n+\treturn ret;\n+}\n+\n int fit_pre_load_data(const char *keydir, void *keydest, void *fit)\n {\n \tint pre_load_noffset;\n \tconst void *algo_name;\n \tconst void *key_name;\n-\tunsigned char *pubkey = NULL;\n-\tint ret, pubkey_len;\n+\tchar *name;\n+\tint ret;\n \n \tif (!keydir || !keydest || !fit)\n \t\treturn 0;\n@@ -1278,17 +1340,25 @@ int fit_pre_load_data(const char *keydir, void *keydest, void *fit)\n \t\tgoto out;\n \t}\n \n-\t/* Read public key */\n-\tret = read_pub_key(keydir, key_name, &pubkey, &pubkey_len);\n-\tif (ret < 0)\n+\t/* Is it a RSA or an ECDSA key */\n+\tname = strchr((const char *)algo_name, ',');\n+\tif (!name) {\n+\t\tfprintf(stderr, \"The name of the algo is invalid: %s\\n\",\n+\t\t\t(char *)algo_name);\n+\t\tret = -EINVAL;\n \t\tgoto out;\n+\t}\n+\tname += 1;\n \n-\t/* Add the public key to the device tree */\n-\tret = fdt_setprop(keydest, pre_load_noffset, \"public-key\",\n-\t\t\t pubkey, pubkey_len);\n-\tif (ret)\n-\t\tfprintf(stderr, \"Can't set public-key in node %s (ret = %d)\\n\",\n-\t\t\tIMAGE_PRE_LOAD_PATH, ret);\n+\tif (!strncmp(name, \"rsa\", 3)) {\n+\t\tret = fit_pre_load_data_key_rsa(keydir, keydest, pre_load_noffset, key_name);\n+\t} else if (!strncmp(name, \"ecdsa\", 5)) {\n+\t\tret = fit_pre_load_data_key_ecdsa(keydir, keydest, pre_load_noffset,\n+\t\t\t\t\t\t key_name, algo_name);\n+\t} else {\n+\t\tfprintf(stderr, \"The algo %s is not supported\\n\", (char *)algo_name);\n+\t\tret = -EINVAL;\n+\t}\n \n out:\n \treturn ret;\n","prefixes":["v5","10/15"]}