From 2bbed3ff8c7fa0c0fa3fd28a9497bf7a99e3388b Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sat, 25 Sep 2021 19:43:23 -0600 Subject: [PATCH] image: Use Kconfig to enable FIT_RSASSA_PSS on host Add a host Kconfig for FIT_RSASSA_PSS. With this we can use CONFIG_IS_ENABLED(FIT_RSASSA_PSS) directly in the host build, so drop the forcing of this in the image.h header. Drop the #ifdef around padding_pss_verify() too since it is not needed. Use the compiler to check the config where possible, instead of the preprocessor. Signed-off-by: Simon Glass Reviewed-by: Alexandru Gagniuc --- include/image.h | 3 --- include/u-boot/rsa.h | 2 -- lib/rsa/rsa-sign.c | 5 ++--- lib/rsa/rsa-verify.c | 15 ++++----------- tools/Kconfig | 5 +++++ 5 files changed, 11 insertions(+), 19 deletions(-) diff --git a/include/image.h b/include/image.h index 6efbef0..dc872ef 100644 --- a/include/image.h +++ b/include/image.h @@ -27,9 +27,6 @@ struct fdt_region; #include #include -/* new uImage format support enabled on host */ -#define CONFIG_FIT_RSASSA_PSS 1 - #define IMAGE_ENABLE_IGNORE 0 #define IMAGE_INDENT_STRING "" diff --git a/include/u-boot/rsa.h b/include/u-boot/rsa.h index 89a9c4c..7556aa5 100644 --- a/include/u-boot/rsa.h +++ b/include/u-boot/rsa.h @@ -103,11 +103,9 @@ int padding_pkcs_15_verify(struct image_sign_info *info, uint8_t *msg, int msg_len, const uint8_t *hash, int hash_len); -#ifdef CONFIG_FIT_RSASSA_PSS int padding_pss_verify(struct image_sign_info *info, uint8_t *msg, int msg_len, const uint8_t *hash, int hash_len); -#endif /* CONFIG_FIT_RSASSA_PSS */ #define RSA_DEFAULT_PADDING_NAME "pkcs-1.5" diff --git a/lib/rsa/rsa-sign.c b/lib/rsa/rsa-sign.c index c27a784..0579e52 100644 --- a/lib/rsa/rsa-sign.c +++ b/lib/rsa/rsa-sign.c @@ -401,15 +401,14 @@ static int rsa_sign_with_key(EVP_PKEY *pkey, struct padding_algo *padding_algo, goto err_sign; } -#ifdef CONFIG_FIT_RSASSA_PSS - if (padding_algo && !strcmp(padding_algo->name, "pss")) { + if (CONFIG_IS_ENABLED(FIT_RSASSA_PSS) && padding_algo && + !strcmp(padding_algo->name, "pss")) { if (EVP_PKEY_CTX_set_rsa_padding(ckey, RSA_PKCS1_PSS_PADDING) <= 0) { ret = rsa_err("Signer padding setup failed"); goto err_sign; } } -#endif /* CONFIG_FIT_RSASSA_PSS */ for (i = 0; i < region_count; i++) { if (!EVP_DigestSignUpdate(context, region[i].data, diff --git a/lib/rsa/rsa-verify.c b/lib/rsa/rsa-verify.c index ad6d33d..600c93a 100644 --- a/lib/rsa/rsa-verify.c +++ b/lib/rsa/rsa-verify.c @@ -102,7 +102,7 @@ U_BOOT_PADDING_ALGO(pkcs_15) = { }; #endif -#ifdef CONFIG_FIT_RSASSA_PSS +#if CONFIG_IS_ENABLED(FIT_RSASSA_PSS) static void u32_i2osp(uint32_t val, uint8_t *buf) { buf[0] = (uint8_t)((val >> 24) & 0xff); @@ -313,7 +313,6 @@ U_BOOT_PADDING_ALGO(pss) = { #endif -#if CONFIG_IS_ENABLED(FIT_SIGNATURE) || CONFIG_IS_ENABLED(RSA_VERIFY_WITH_PKEY) /** * rsa_verify_key() - Verify a signature against some data using RSA Key * @@ -385,9 +384,7 @@ static int rsa_verify_key(struct image_sign_info *info, return 0; } -#endif -#if CONFIG_IS_ENABLED(RSA_VERIFY_WITH_PKEY) /** * rsa_verify_with_pkey() - Verify a signature against some data using * only modulus and exponent as RSA key properties. @@ -408,6 +405,9 @@ int rsa_verify_with_pkey(struct image_sign_info *info, struct key_prop *prop; int ret; + if (!CONFIG_IS_ENABLED(RSA_VERIFY_WITH_PKEY)) + return -EACCES; + /* Public key is self-described to fill key_prop */ ret = rsa_gen_key_prop(info->key, info->keylen, &prop); if (ret) { @@ -422,13 +422,6 @@ int rsa_verify_with_pkey(struct image_sign_info *info, return ret; } -#else -int rsa_verify_with_pkey(struct image_sign_info *info, - const void *hash, uint8_t *sig, uint sig_len) -{ - return -EACCES; -} -#endif #if CONFIG_IS_ENABLED(FIT_SIGNATURE) /** diff --git a/tools/Kconfig b/tools/Kconfig index 9d1c0ef..8685c80 100644 --- a/tools/Kconfig +++ b/tools/Kconfig @@ -35,6 +35,11 @@ config TOOLS_FIT_PRINT help Print the content of the FIT verbosely in the tools builds +config TOOLS_FIT_RSASSA_PSS + def_bool y + help + Support the rsassa-pss signature scheme in the tools builds + config TOOLS_FIT_SIGNATURE def_bool y help -- 2.7.4