Measured Boot: add function for hash calculation
This patch adds 'calc_hash' function using Mbed TLS library
required for Measured Boot support.
Change-Id: Ifc5aee0162d04db58ec6391e0726a526f29a52bb
Signed-off-by: Alexei Fedorov <Alexei.Fedorov@arm.com>
diff --git a/include/drivers/auth/crypto_mod.h b/include/drivers/auth/crypto_mod.h
index 3a42105..f211035 100644
--- a/include/drivers/auth/crypto_mod.h
+++ b/include/drivers/auth/crypto_mod.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@@ -37,6 +37,13 @@
/* Verify a hash. Return one of the 'enum crypto_ret_value' options */
int (*verify_hash)(void *data_ptr, unsigned int data_len,
void *digest_info_ptr, unsigned int digest_info_len);
+
+#if MEASURED_BOOT
+ /* Calculate a hash. Return hash value */
+ int (*calc_hash)(unsigned int alg, void *data_ptr,
+ unsigned int data_len, unsigned char *output);
+#endif /* MEASURED_BOOT */
+
} crypto_lib_desc_t;
/* Public functions */
@@ -48,7 +55,21 @@
int crypto_mod_verify_hash(void *data_ptr, unsigned int data_len,
void *digest_info_ptr, unsigned int digest_info_len);
+#if MEASURED_BOOT
+int crypto_mod_calc_hash(unsigned int alg, void *data_ptr,
+ unsigned int data_len, unsigned char *output);
+
/* Macro to register a cryptographic library */
+#define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash, \
+ _calc_hash) \
+ const crypto_lib_desc_t crypto_lib_desc = { \
+ .name = _name, \
+ .init = _init, \
+ .verify_signature = _verify_signature, \
+ .verify_hash = _verify_hash, \
+ .calc_hash = _calc_hash \
+ }
+#else
#define REGISTER_CRYPTO_LIB(_name, _init, _verify_signature, _verify_hash) \
const crypto_lib_desc_t crypto_lib_desc = { \
.name = _name, \
@@ -56,6 +77,7 @@
.verify_signature = _verify_signature, \
.verify_hash = _verify_hash \
}
+#endif /* MEASURED_BOOT */
extern const crypto_lib_desc_t crypto_lib_desc;