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-rw-r--r--include/drivers/auth/crypto_mod.h34
-rw-r--r--include/drivers/auth/mbedtls/mbedtls_config.h6
-rw-r--r--include/drivers/io/io_encrypted.h15
-rw-r--r--include/drivers/io/io_storage.h1
-rw-r--r--include/export/common/tbbr/tbbr_img_def_exp.h7
-rw-r--r--include/plat/common/platform.h13
-rw-r--r--include/tools_share/firmware_encrypted.h42
7 files changed, 112 insertions, 6 deletions
diff --git a/include/drivers/auth/crypto_mod.h b/include/drivers/auth/crypto_mod.h
index f211035d7..71cf67306 100644
--- a/include/drivers/auth/crypto_mod.h
+++ b/include/drivers/auth/crypto_mod.h
@@ -13,9 +13,18 @@ enum crypto_ret_value {
CRYPTO_ERR_INIT,
CRYPTO_ERR_HASH,
CRYPTO_ERR_SIGNATURE,
+ CRYPTO_ERR_DECRYPTION,
CRYPTO_ERR_UNKNOWN
};
+#define CRYPTO_MAX_IV_SIZE 16U
+#define CRYPTO_MAX_TAG_SIZE 16U
+
+/* Decryption algorithm */
+enum crypto_dec_algo {
+ CRYPTO_GCM_DECRYPT = 0
+};
+
/*
* Cryptographic library descriptor
*/
@@ -44,6 +53,15 @@ typedef struct crypto_lib_desc_s {
unsigned int data_len, unsigned char *output);
#endif /* MEASURED_BOOT */
+ /*
+ * Authenticated decryption. Return one of the
+ * 'enum crypto_ret_value' options.
+ */
+ int (*auth_decrypt)(enum crypto_dec_algo dec_algo, void *data_ptr,
+ size_t len, const void *key, unsigned int key_len,
+ unsigned int key_flags, const void *iv,
+ unsigned int iv_len, const void *tag,
+ unsigned int tag_len);
} crypto_lib_desc_t;
/* Public functions */
@@ -54,6 +72,11 @@ int crypto_mod_verify_signature(void *data_ptr, unsigned int data_len,
void *pk_ptr, unsigned int pk_len);
int crypto_mod_verify_hash(void *data_ptr, unsigned int data_len,
void *digest_info_ptr, unsigned int digest_info_len);
+int crypto_mod_auth_decrypt(enum crypto_dec_algo dec_algo, void *data_ptr,
+ size_t len, const void *key, unsigned int key_len,
+ unsigned int key_flags, const void *iv,
+ unsigned int iv_len, const void *tag,
+ unsigned int tag_len);
#if MEASURED_BOOT
int crypto_mod_calc_hash(unsigned int alg, void *data_ptr,
@@ -61,21 +84,24 @@ int crypto_mod_calc_hash(unsigned int alg, void *data_ptr,
/* Macro to register a cryptographic library */
#define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash, \
- _calc_hash) \
+ _calc_hash, _auth_decrypt) \
const crypto_lib_desc_t crypto_lib_desc = { \
.name = _name, \
.init = _init, \
.verify_signature = _verify_signature, \
.verify_hash = _verify_hash, \
- .calc_hash = _calc_hash \
+ .calc_hash = _calc_hash, \
+ .auth_decrypt = _auth_decrypt \
}
#else
-#define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash) \
+#define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash, \
+ _auth_decrypt) \
const crypto_lib_desc_t crypto_lib_desc = { \
.name = _name, \
.init = _init, \
.verify_signature = _verify_signature, \
- .verify_hash = _verify_hash \
+ .verify_hash = _verify_hash, \
+ .auth_decrypt = _auth_decrypt \
}
#endif /* MEASURED_BOOT */
diff --git a/include/drivers/auth/mbedtls/mbedtls_config.h b/include/drivers/auth/mbedtls/mbedtls_config.h
index 6e179bbd1..dc00da7d6 100644
--- a/include/drivers/auth/mbedtls/mbedtls_config.h
+++ b/include/drivers/auth/mbedtls/mbedtls_config.h
@@ -79,6 +79,12 @@
#define MBEDTLS_X509_USE_C
#define MBEDTLS_X509_CRT_PARSE_C
+#if TF_MBEDTLS_USE_AES_GCM
+#define MBEDTLS_AES_C
+#define MBEDTLS_CIPHER_C
+#define MBEDTLS_GCM_C
+#endif
+
/* MPI / BIGNUM options */
#define MBEDTLS_MPI_WINDOW_SIZE 2
diff --git a/include/drivers/io/io_encrypted.h b/include/drivers/io/io_encrypted.h
new file mode 100644
index 000000000..9dcf061b4
--- /dev/null
+++ b/include/drivers/io/io_encrypted.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2020, Linaro Limited. All rights reserved.
+ * Author: Sumit Garg <sumit.garg@linaro.org>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef IO_ENCRYPTED_H
+#define IO_ENCRYPTED_H
+
+struct io_dev_connector;
+
+int register_io_dev_enc(const struct io_dev_connector **dev_con);
+
+#endif /* IO_ENCRYPTED_H */
diff --git a/include/drivers/io/io_storage.h b/include/drivers/io/io_storage.h
index a301ad563..f2d641c2d 100644
--- a/include/drivers/io/io_storage.h
+++ b/include/drivers/io/io_storage.h
@@ -25,6 +25,7 @@ typedef enum {
IO_TYPE_MTD,
IO_TYPE_MMC,
IO_TYPE_STM32IMAGE,
+ IO_TYPE_ENCRYPTED,
IO_TYPE_MAX
} io_type_t;
diff --git a/include/export/common/tbbr/tbbr_img_def_exp.h b/include/export/common/tbbr/tbbr_img_def_exp.h
index 360255413..89dbc58fe 100644
--- a/include/export/common/tbbr/tbbr_img_def_exp.h
+++ b/include/export/common/tbbr/tbbr_img_def_exp.h
@@ -85,12 +85,15 @@
/* Binary with STM32 header */
#define STM32_IMAGE_ID U(29)
+/* Encrypted image identifier */
+#define ENC_IMAGE_ID U(30)
+
/* Define size of the array */
#if defined(SPD_spmd)
#define MAX_SP_IDS U(8)
-#define MAX_NUMBER_IDS MAX_SP_IDS + U(30)
+#define MAX_NUMBER_IDS MAX_SP_IDS + U(31)
#else
-#define MAX_NUMBER_IDS U(30)
+#define MAX_NUMBER_IDS U(31)
#endif
#endif /* ARM_TRUSTED_FIRMWARE_EXPORT_COMMON_TBBR_TBBR_IMG_DEF_EXP_H */
diff --git a/include/plat/common/platform.h b/include/plat/common/platform.h
index f5bd298c5..5b5ebb973 100644
--- a/include/plat/common/platform.h
+++ b/include/plat/common/platform.h
@@ -27,6 +27,7 @@ struct bl_params;
struct mmap_region;
struct spm_mm_boot_info;
struct sp_res_desc;
+enum fw_enc_status_t;
/*******************************************************************************
* plat_get_rotpk_info() flags
@@ -37,6 +38,15 @@ struct sp_res_desc;
#define ROTPK_NOT_DEPLOYED (1 << 1)
/*******************************************************************************
+ * plat_get_enc_key_info() flags
+ ******************************************************************************/
+/*
+ * Flag used to notify caller that information provided in key buffer is an
+ * identifier rather than an actual key.
+ */
+#define ENC_KEY_IS_IDENTIFIER (1 << 0)
+
+/*******************************************************************************
* Function declarations
******************************************************************************/
/*******************************************************************************
@@ -265,6 +275,9 @@ int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr);
int plat_set_nv_ctr2(void *cookie, const struct auth_img_desc_s *img_desc,
unsigned int nv_ctr);
int get_mbedtls_heap_helper(void **heap_addr, size_t *heap_size);
+int plat_get_enc_key_info(enum fw_enc_status_t fw_enc_status, uint8_t *key,
+ size_t *key_len, unsigned int *flags,
+ const uint8_t *img_id, size_t img_id_len);
/*******************************************************************************
* Secure Partitions functions
diff --git a/include/tools_share/firmware_encrypted.h b/include/tools_share/firmware_encrypted.h
new file mode 100644
index 000000000..7ca634f5e
--- /dev/null
+++ b/include/tools_share/firmware_encrypted.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2020, Linaro Limited. All rights reserved.
+ * Author: Sumit Garg <sumit.garg@linaro.org>
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef FIRMWARE_ENCRYPTED_H
+#define FIRMWARE_ENCRYPTED_H
+
+#include <stdint.h>
+
+/* This is used as a signature to validate the encryption header */
+#define ENC_HEADER_MAGIC 0xAA640001U
+
+/* Firmware encryption status flag mask */
+#define FW_ENC_STATUS_FLAG_MASK 0x1
+
+/*
+ * SSK: Secret Symmetric Key
+ * BSSK: Binding Secret Symmetric Key
+ */
+enum fw_enc_status_t {
+ FW_ENC_WITH_SSK = 0,
+ FW_ENC_WITH_BSSK = 1,
+};
+
+#define ENC_MAX_IV_SIZE 16U
+#define ENC_MAX_TAG_SIZE 16U
+#define ENC_MAX_KEY_SIZE 32U
+
+struct fw_enc_hdr {
+ uint32_t magic;
+ uint16_t dec_algo;
+ uint16_t flags;
+ uint16_t iv_len;
+ uint16_t tag_len;
+ uint8_t iv[ENC_MAX_IV_SIZE];
+ uint8_t tag[ENC_MAX_TAG_SIZE];
+};
+
+#endif /* FIRMWARE_ENCRYPTED_H */
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-15 17:28:49 +0000