diff --git a/boot/zephyr/Kconfig b/boot/zephyr/Kconfig index 8a73728a83..3ce0372310 100644 --- a/boot/zephyr/Kconfig +++ b/boot/zephyr/Kconfig @@ -77,6 +77,7 @@ config BOOT_SIGNATURE_TYPE_RSA bool "RSA signatures" select BOOT_USE_MBEDTLS select MBEDTLS + select BOOT_ENCRYPTION_SUPPORT if !SINGLE_APPLICATION_SLOT if BOOT_SIGNATURE_TYPE_RSA config BOOT_SIGNATURE_TYPE_RSA_LEN @@ -87,6 +88,7 @@ endif config BOOT_SIGNATURE_TYPE_ECDSA_P256 bool "Elliptic curve digital signatures with curve P-256" + select BOOT_ENCRYPTION_SUPPORT if !SINGLE_APPLICATION_SLOT if BOOT_SIGNATURE_TYPE_ECDSA_P256 choice BOOT_ECDSA_IMPLEMENTATION @@ -109,6 +111,7 @@ endif config BOOT_SIGNATURE_TYPE_ED25519 bool "Edwards curve digital signatures using ed25519" + select BOOT_ENCRYPTION_SUPPORT if !SINGLE_APPLICATION_SLOT if BOOT_SIGNATURE_TYPE_ED25519 choice BOOT_ED25519_IMPLEMENTATION @@ -300,45 +303,50 @@ config BOOT_SWAP_SAVE_ENCTLV JTAG/SWD or primary slot in external flash). If unsure, leave at the default value. -config BOOT_ENCRYPT_IMAGE +config BOOT_ENCRYPTION_SUPPORT bool help - Hidden option used to check if any image encryption is enabled. + Hidden option used to check if image encryption is supported. -config BOOT_ENCRYPT_RSA - bool "Support for encrypted upgrade images using RSA" - select BOOT_ENCRYPT_IMAGE +config BOOT_ENCRYPT_IMAGE + bool "Support for encrypted image updates" + depends on BOOT_ENCRYPTION_SUPPORT + select BOOT_ENCRYPT_RSA if BOOT_SIGNATURE_TYPE_RSA + select BOOT_ENCRYPT_EC256 if BOOT_SIGNATURE_TYPE_ECDSA_P256 + select BOOT_ENCRYPT_X25519 if BOOT_SIGNATURE_TYPE_ED25519 help If y, images in the secondary slot can be encrypted and are decrypted on the fly when upgrading to the primary slot, as well as encrypted back when swapping from the primary slot to the secondary slot. The - encryption mechanism used in this case is RSA-OAEP (2048 bits). + encryption mechanism must match the same type as the signature type, + supported types include: + - RSA-OAEP (2048 bits). + - ECIES using primitives described under "ECIES-P256 encryption" in + docs/encrypted_images.md. + - ECIES using primitives described under "ECIES-X25519 encryption" + in docs/encrypted_images.md. + +config BOOT_ENCRYPT_RSA + bool + help + Hidden option selecting RSA encryption. config BOOT_ENCRYPT_EC256 - bool "Support for encrypted upgrade images using ECIES-P256" - select BOOT_ENCRYPT_IMAGE + bool help - If y, images in the secondary slot can be encrypted and are decrypted - on the fly when upgrading to the primary slot, as well as encrypted - back when swapping from the primary slot to the secondary slot. The - encryption mechanism used in this case is ECIES using primitives - described under "ECIES-P256 encryption" in docs/encrypted_images.md. + Hidden option selecting EC256 encryption. config BOOT_ENCRYPT_X25519 - bool "Support for encrypted upgrade images using ECIES-X25519" - select BOOT_ENCRYPT_IMAGE + bool help - If y, images in the secondary slot can be encrypted and are decrypted - on the fly when upgrading to the primary slot, as well as encrypted - back when swapping from the primary slot to the secondary slot. The - encryption mechanism used in this case is ECIES using primitives - described under "ECIES-X25519 encryption" in docs/encrypted_images.md. -endif # !SINGLE_APPLICATION_SLOT + Hidden option selecting x25519 encryption. config BOOT_ENCRYPTION_KEY_FILE - string "encryption key file" - depends on BOOT_ENCRYPT_EC256 || BOOT_SERIAL_ENCRYPT_EC256 - default "enc-ec256-priv.pem" if BOOT_SIGNATURE_TYPE_ECDSA_P256 + string "Encryption key file" + depends on BOOT_ENCRYPT_IMAGE + default "enc-rsa2048-priv.pem" if BOOT_ENCRYPT_RSA + default "enc-ec256-priv.pem" if BOOT_ENCRYPT_EC256 + default "enc-x25519-priv.pem" if BOOT_ENCRYPT_X25519 default "" help You can use either absolute or relative path. @@ -350,6 +358,8 @@ config BOOT_ENCRYPTION_KEY_FILE with the public key information will be written in a format expected by MCUboot. +endif # !SINGLE_APPLICATION_SLOT + config BOOT_MAX_IMG_SECTORS int "Maximum number of sectors per image slot" default 128 diff --git a/boot/zephyr/keys.c b/boot/zephyr/keys.c index b7a9edf791..ab403ddc38 100644 --- a/boot/zephyr/keys.c +++ b/boot/zephyr/keys.c @@ -29,19 +29,19 @@ #include #if !defined(MCUBOOT_HW_KEY) -#if defined(MCUBOOT_SIGN_RSA) +#if defined(MCUBOOT_SIGN_RSA) || defined(MCUBOOT_SIGN_EC256) || defined(MCUBOOT_SIGN_ED25519) #define HAVE_KEYS +#if defined(MCUBOOT_SIGN_RSA) extern const unsigned char rsa_pub_key[]; extern unsigned int rsa_pub_key_len; #elif defined(MCUBOOT_SIGN_EC256) -#define HAVE_KEYS extern const unsigned char ecdsa_pub_key[]; extern unsigned int ecdsa_pub_key_len; #elif defined(MCUBOOT_SIGN_ED25519) -#define HAVE_KEYS extern const unsigned char ed25519_pub_key[]; extern unsigned int ed25519_pub_key_len; #endif +#endif /* * NOTE: *_pub_key and *_pub_key_len are autogenerated based on the provided @@ -76,134 +76,13 @@ struct bootutil_key bootutil_keys[1] = { const int bootutil_key_cnt = 1; #endif /* !MCUBOOT_HW_KEY */ -#if defined(MCUBOOT_ENCRYPT_RSA) -unsigned char enc_priv_key[] = { - 0x30, 0x82, 0x04, 0xa4, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01, 0x01, 0x00, - 0xb4, 0x26, 0x14, 0x49, 0x3d, 0x16, 0x13, 0x3a, 0x6d, 0x9c, 0x84, 0xa9, - 0x8b, 0x6a, 0x10, 0x20, 0x61, 0xef, 0x48, 0x04, 0xa4, 0x4b, 0x24, 0xf3, - 0x00, 0x32, 0xac, 0x22, 0xe0, 0x30, 0x27, 0x70, 0x18, 0xe5, 0x55, 0xc8, - 0xb8, 0x05, 0x34, 0x03, 0xb0, 0xf8, 0xa5, 0x96, 0xd2, 0x48, 0x58, 0xef, - 0x70, 0xb0, 0x09, 0xdb, 0xe3, 0x58, 0x62, 0xef, 0x99, 0x63, 0x01, 0xb2, - 0x89, 0xc4, 0xb3, 0xf6, 0x9e, 0x62, 0xbf, 0x4d, 0xc2, 0x8a, 0xd0, 0xc9, - 0x4d, 0x43, 0xa3, 0xd8, 0xe5, 0x1d, 0xec, 0x62, 0x63, 0x08, 0xe2, 0x20, - 0xa5, 0xfc, 0x78, 0xd0, 0x3e, 0x74, 0xc8, 0xa4, 0x1b, 0x36, 0xad, 0x7b, - 0xf5, 0x06, 0xae, 0x4d, 0x51, 0x9b, 0x40, 0xce, 0x30, 0x4f, 0x6c, 0xea, - 0xf9, 0xe9, 0x74, 0xea, 0x06, 0xee, 0x9c, 0xe4, 0x14, 0x68, 0x20, 0xb9, - 0x3d, 0xe7, 0x11, 0x14, 0x8b, 0x25, 0xa3, 0xff, 0x4c, 0x8a, 0xf3, 0x53, - 0xee, 0x6b, 0x3e, 0xef, 0x34, 0xcd, 0x6a, 0x3f, 0x62, 0x68, 0xc0, 0xff, - 0x78, 0x4c, 0xb0, 0xc3, 0xe6, 0x96, 0x61, 0xfc, 0x1f, 0x18, 0xf1, 0x7a, - 0x82, 0xe2, 0x8f, 0x35, 0xa8, 0x2b, 0x86, 0x16, 0xa4, 0x46, 0xfb, 0xac, - 0x7e, 0x41, 0xdb, 0x02, 0x05, 0x91, 0x6d, 0xdf, 0xc1, 0xde, 0x13, 0x95, - 0x9c, 0xf9, 0x9e, 0x5e, 0x72, 0xba, 0xa7, 0x25, 0x93, 0xfb, 0xdc, 0xe8, - 0xab, 0x86, 0x45, 0x88, 0x47, 0x2d, 0xed, 0xee, 0xee, 0x97, 0x9e, 0xce, - 0x5d, 0x9b, 0x04, 0x04, 0x40, 0x7c, 0xcb, 0x7c, 0x3d, 0x2c, 0x74, 0xab, - 0xa4, 0xcc, 0x64, 0xa3, 0x5c, 0x95, 0x3d, 0xd4, 0xa2, 0xdc, 0x92, 0xb2, - 0xc8, 0x18, 0xcb, 0xf9, 0x00, 0x39, 0x81, 0x8f, 0x8f, 0x40, 0xc2, 0xdf, - 0x99, 0x29, 0xac, 0x8a, 0xc2, 0x3b, 0xd8, 0xa4, 0xf2, 0xad, 0xaf, 0x74, - 0xc0, 0x11, 0xc7, 0x99, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02, 0x82, 0x01, - 0x00, 0x42, 0x47, 0x80, 0x4f, 0x31, 0xda, 0x5d, 0x58, 0xb1, 0xdb, 0x54, - 0x33, 0xcc, 0xc7, 0x49, 0x07, 0xa1, 0x00, 0x98, 0x4e, 0x9c, 0xe3, 0xc8, - 0xc4, 0x5e, 0xde, 0x45, 0xd6, 0xcf, 0x04, 0xe8, 0x7d, 0xa5, 0xab, 0x3a, - 0xd4, 0x8e, 0x5f, 0xdb, 0xb3, 0x3f, 0xf9, 0x3b, 0x73, 0x32, 0x0a, 0xcc, - 0x2d, 0xcc, 0x17, 0xf8, 0x88, 0x9e, 0x2c, 0x76, 0xba, 0x10, 0x85, 0x0c, - 0xaa, 0xd3, 0x65, 0x3b, 0x91, 0x10, 0xd4, 0xe3, 0xed, 0x88, 0x15, 0xea, - 0x9b, 0x25, 0x82, 0x2d, 0x56, 0x2f, 0x75, 0xc2, 0xf2, 0xaf, 0xdd, 0x24, - 0xd5, 0x3e, 0x3c, 0x95, 0x76, 0x88, 0x84, 0x0f, 0x0d, 0xd1, 0xb5, 0x5c, - 0x3e, 0xae, 0xf7, 0xb6, 0x49, 0x5c, 0x2c, 0xf2, 0xba, 0xe9, 0xab, 0x4f, - 0x37, 0x64, 0x9b, 0x30, 0x18, 0xaa, 0x54, 0x40, 0x04, 0xea, 0x3d, 0x25, - 0x4d, 0x02, 0x29, 0x71, 0x6f, 0x4d, 0x82, 0x9b, 0xc3, 0x44, 0x2a, 0x9d, - 0x0c, 0x98, 0xd3, 0xc8, 0x15, 0x0d, 0x04, 0x93, 0x60, 0x30, 0xc7, 0x5e, - 0x79, 0xea, 0x53, 0x9d, 0xc0, 0x0e, 0x81, 0xac, 0x90, 0xbc, 0x9e, 0x1e, - 0xd2, 0x28, 0x0f, 0x10, 0xf5, 0x1f, 0xdf, 0x38, 0x7f, 0x8a, 0x90, 0x8d, - 0x49, 0x07, 0x7d, 0x78, 0xcb, 0xa7, 0xef, 0x92, 0x6d, 0x3b, 0x13, 0x95, - 0x9b, 0xba, 0x83, 0xc6, 0xb3, 0x71, 0x25, 0x27, 0x07, 0x99, 0x54, 0x82, - 0x3d, 0xec, 0xc5, 0xf8, 0xb4, 0xa0, 0x38, 0x7a, 0x59, 0x6a, 0x0b, 0xca, - 0x69, 0x6c, 0x17, 0xa4, 0x18, 0xe0, 0xb4, 0xaa, 0x89, 0x99, 0x8f, 0xcb, - 0x71, 0x34, 0x09, 0x1b, 0x6e, 0xe6, 0x87, 0x00, 0xb5, 0xba, 0x70, 0x8a, - 0x29, 0x3d, 0x9a, 0x06, 0x18, 0x2d, 0x66, 0x5e, 0x61, 0x37, 0xeb, 0xdd, - 0x5e, 0xc8, 0x28, 0x92, 0x05, 0x30, 0xfd, 0xb8, 0x65, 0xb1, 0x7f, 0xbf, - 0x2d, 0x55, 0x12, 0x91, 0xc1, 0x02, 0x81, 0x81, 0x00, 0xda, 0x65, 0xda, - 0x38, 0x7c, 0x18, 0xfb, 0x00, 0x11, 0x60, 0xeb, 0x37, 0x65, 0xb8, 0x83, - 0x62, 0x88, 0xc4, 0x3a, 0x4e, 0x64, 0x6a, 0xf3, 0x3e, 0x4e, 0xc0, 0x34, - 0x19, 0x8a, 0xcb, 0x4a, 0xca, 0x2f, 0x5d, 0x50, 0x7a, 0xac, 0xf7, 0x9e, - 0x87, 0x5a, 0xfc, 0x4d, 0x49, 0xd7, 0xf9, 0x21, 0xf5, 0x0b, 0x6f, 0x57, - 0x41, 0x3d, 0x8f, 0xb8, 0xec, 0x7f, 0xcc, 0x92, 0x09, 0xbe, 0xd3, 0xa4, - 0xc3, 0x14, 0x85, 0x21, 0x5d, 0x05, 0xa3, 0xaa, 0x20, 0xf6, 0x62, 0x44, - 0x50, 0x03, 0x5e, 0x53, 0x4a, 0xcd, 0x6a, 0xb6, 0x65, 0x8e, 0x4e, 0x4b, - 0x3f, 0x25, 0xc6, 0x16, 0x31, 0xf5, 0x99, 0x13, 0x77, 0x42, 0xda, 0xdc, - 0x70, 0x4d, 0x65, 0xb0, 0x99, 0x0f, 0xdf, 0x5a, 0xb1, 0x45, 0xf0, 0xb9, - 0x8e, 0xa0, 0xae, 0x4f, 0x4d, 0x65, 0x09, 0x84, 0xb5, 0x38, 0x29, 0xbf, - 0x69, 0xe0, 0x88, 0x1f, 0x27, 0x02, 0x81, 0x81, 0x00, 0xd3, 0x2a, 0x59, - 0xec, 0x28, 0xc3, 0x0d, 0x4f, 0x92, 0x96, 0xca, 0x67, 0x94, 0xfc, 0x2e, - 0xa6, 0x86, 0x68, 0x45, 0x53, 0x92, 0xcc, 0x86, 0x7f, 0x8a, 0xe1, 0x5d, - 0xe8, 0x1d, 0x9e, 0xbb, 0x1e, 0x00, 0x26, 0x1d, 0x80, 0x12, 0xff, 0x9c, - 0x11, 0x0a, 0xbd, 0xa6, 0xc3, 0x8d, 0x48, 0xda, 0xfc, 0x10, 0xf7, 0x7a, - 0x16, 0x07, 0x15, 0xa0, 0x3a, 0xd3, 0x94, 0xfb, 0x52, 0x87, 0x39, 0xee, - 0xe7, 0xc4, 0x26, 0x49, 0x16, 0xc6, 0xc0, 0x83, 0x25, 0xbf, 0x6a, 0x4e, - 0x8c, 0x0b, 0x10, 0x85, 0x66, 0xab, 0x7e, 0xae, 0xac, 0x4c, 0x69, 0x3c, - 0x44, 0xeb, 0xcd, 0xe9, 0xf6, 0x64, 0x8b, 0x4a, 0xd8, 0x6a, 0x4d, 0x6d, - 0x47, 0xa9, 0xb8, 0x55, 0x72, 0xc1, 0xfd, 0xf4, 0x81, 0x4c, 0x66, 0xbe, - 0x49, 0xf2, 0x75, 0x4f, 0x80, 0xf1, 0x20, 0x38, 0xb8, 0x6a, 0x1b, 0x75, - 0x41, 0x30, 0x0f, 0x1b, 0x3f, 0x02, 0x81, 0x80, 0x09, 0x35, 0xfa, 0x7a, - 0x1f, 0x61, 0xbe, 0x54, 0x46, 0x67, 0x5c, 0x04, 0x3e, 0x1a, 0x06, 0x10, - 0x85, 0xcc, 0x20, 0xd9, 0x65, 0x8a, 0xcd, 0x2f, 0x77, 0x8a, 0xcb, 0xa7, - 0xb8, 0x1e, 0xd2, 0xcc, 0xac, 0x2a, 0xb7, 0x56, 0x35, 0x2d, 0x4c, 0x56, - 0x51, 0x14, 0x0a, 0xfe, 0x6e, 0x49, 0x67, 0x91, 0x3a, 0x26, 0x3b, 0xfb, - 0xd8, 0x68, 0xd3, 0x57, 0xc6, 0x1c, 0x0e, 0x9c, 0xb2, 0x9b, 0xa2, 0x7b, - 0x47, 0xc6, 0x45, 0x9d, 0xf2, 0xba, 0xf0, 0x55, 0xeb, 0x8e, 0x41, 0x6b, - 0x4e, 0x79, 0x0f, 0xf2, 0x3b, 0xaf, 0xa0, 0x79, 0xb0, 0x02, 0xc5, 0x51, - 0xa8, 0x7a, 0x2e, 0x3d, 0x75, 0x2a, 0x3b, 0x93, 0xf0, 0x11, 0xe2, 0xf2, - 0x29, 0x91, 0x7c, 0x5d, 0x38, 0x3a, 0x27, 0x4d, 0x0a, 0xb2, 0x18, 0x61, - 0x57, 0x8d, 0x82, 0x72, 0xb5, 0x2c, 0x2d, 0x98, 0xa7, 0x01, 0xbb, 0xbc, - 0xef, 0x67, 0x4e, 0x49, 0x02, 0x81, 0x81, 0x00, 0xb2, 0x70, 0x53, 0x54, - 0x70, 0x8d, 0x82, 0xad, 0xff, 0x1d, 0x55, 0x24, 0x7a, 0x8d, 0x2f, 0x8e, - 0xa0, 0x7d, 0x74, 0x37, 0xcf, 0x10, 0xed, 0x86, 0xd1, 0x80, 0xe7, 0xad, - 0xc1, 0x79, 0xe4, 0x7c, 0xd1, 0x7b, 0x63, 0xea, 0x5a, 0x23, 0x8d, 0x6a, - 0x09, 0x3d, 0x81, 0xb2, 0x35, 0xad, 0x9e, 0xfe, 0xea, 0x07, 0x76, 0x2f, - 0x2f, 0x05, 0x63, 0x44, 0xd2, 0x8e, 0x4e, 0x61, 0xca, 0xcb, 0x75, 0xca, - 0x7b, 0xc2, 0x2e, 0x79, 0x04, 0xb2, 0xa1, 0x20, 0x40, 0xc4, 0x40, 0x63, - 0xae, 0xe5, 0xe3, 0x14, 0x83, 0x4e, 0xa5, 0xa4, 0x0b, 0x5d, 0xd2, 0x04, - 0x1b, 0x8f, 0x01, 0x69, 0xa8, 0x44, 0xdc, 0x96, 0x4c, 0x1d, 0xe9, 0x7e, - 0x69, 0x38, 0xcf, 0x5c, 0x0d, 0xf9, 0xdf, 0xa7, 0x73, 0x3c, 0x4f, 0x08, - 0x85, 0xce, 0x03, 0xc4, 0xdd, 0xfd, 0x70, 0x70, 0xc5, 0x99, 0x36, 0x58, - 0x43, 0x98, 0x40, 0x59, 0x02, 0x81, 0x81, 0x00, 0xd5, 0xaa, 0xfb, 0xec, - 0x8d, 0xc6, 0xdd, 0xfa, 0x2b, 0x5a, 0x24, 0xd0, 0xda, 0x58, 0xbd, 0x87, - 0x92, 0x1a, 0x29, 0x62, 0x13, 0x1d, 0x4b, 0x79, 0x1b, 0xbe, 0x79, 0x7d, - 0xad, 0x79, 0xca, 0x17, 0x75, 0xda, 0xe8, 0x32, 0xe8, 0xa0, 0x9e, 0xa8, - 0x77, 0x53, 0xac, 0x38, 0xd6, 0xeb, 0xe6, 0x22, 0x65, 0xc4, 0xaa, 0x4c, - 0xc8, 0xd0, 0x33, 0x1a, 0x1e, 0xbe, 0xbd, 0x73, 0x09, 0x4a, 0xfa, 0x85, - 0x5c, 0xf3, 0x0c, 0x9c, 0x81, 0x56, 0x30, 0xa7, 0xf7, 0x9b, 0xf4, 0x92, - 0x9c, 0x6b, 0x93, 0x6a, 0x00, 0x33, 0xdc, 0x2f, 0x54, 0x1e, 0x78, 0xd4, - 0x97, 0xec, 0x24, 0xa2, 0xdb, 0x3d, 0x03, 0x33, 0x09, 0xb2, 0x2c, 0x03, - 0x05, 0x40, 0xde, 0x52, 0xf2, 0x9b, 0xfa, 0x00, 0x8d, 0x4b, 0xfe, 0x5b, - 0x9b, 0x9c, 0x73, 0xad, 0xfb, 0x7a, 0x00, 0x42, 0x62, 0x9e, 0xa0, 0x95, - 0x55, 0x50, 0x32, 0x87 -}; -static unsigned int enc_priv_key_len = 1192; - -const struct bootutil_key bootutil_enc_key = { - .key = enc_priv_key, - .len = &enc_priv_key_len, -}; -#elif defined(MCUBOOT_ENCRYPT_EC256) +#if defined(MCUBOOT_ENCRYPT_RSA) || defined(MCUBOOT_ENCRYPT_X25519) || defined(MCUBOOT_ENCRYPT_EC256) extern const unsigned char enc_priv_key[]; extern unsigned int enc_priv_key_len; const struct bootutil_key bootutil_enc_key = { .key = enc_priv_key, .len = &enc_priv_key_len, }; -#elif defined(MCUBOOT_ENCRYPT_X25519) -unsigned char enc_key[] = { - 0x30, 0x2e, 0x02, 0x01, 0x00, 0x30, 0x05, 0x06, 0x03, 0x2b, 0x65, 0x6e, - 0x04, 0x22, 0x04, 0x20, 0x28, 0x80, 0x2f, 0xef, 0xef, 0x82, 0x95, 0x50, - 0xf1, 0x41, 0x93, 0x03, 0x6c, 0x1b, 0xb9, 0x49, 0x6c, 0x51, 0xe5, 0x26, - 0x87, 0x8f, 0x77, 0x07, 0xf8, 0xb4, 0x1f, 0x04, 0x45, 0x6d, 0x84, 0x4f, -}; -static unsigned int enc_key_len = 48; -const struct bootutil_key bootutil_enc_key = { - .key = enc_key, - .len = &enc_key_len, -}; #elif defined(MCUBOOT_ENCRYPT_KW) #error "Encrypted images with AES-KW is not implemented yet." #endif diff --git a/boot/zephyr/prj.conf b/boot/zephyr/prj.conf index b6a62a9d60..8d3cdb8191 100644 --- a/boot/zephyr/prj.conf +++ b/boot/zephyr/prj.conf @@ -5,9 +5,7 @@ CONFIG_MAIN_STACK_SIZE=10240 CONFIG_MBEDTLS_CFG_FILE="mcuboot-mbedtls-cfg.h" CONFIG_BOOT_SWAP_SAVE_ENCTLV=n -CONFIG_BOOT_ENCRYPT_RSA=n -CONFIG_BOOT_ENCRYPT_EC256=n -CONFIG_BOOT_ENCRYPT_X25519=n +CONFIG_BOOT_ENCRYPT_IMAGE=n CONFIG_BOOT_UPGRADE_ONLY=n CONFIG_BOOT_BOOTSTRAP=n