diff options
Diffstat (limited to 'include/common/tbbr/cot_def.h')
| -rw-r--r-- | include/common/tbbr/cot_def.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/include/common/tbbr/cot_def.h b/include/common/tbbr/cot_def.h new file mode 100644 index 0000000..60dfb8a --- /dev/null +++ b/include/common/tbbr/cot_def.h @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2015-2022, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef COT_DEF_H +#define COT_DEF_H + +#ifdef MBEDTLS_CONFIG_FILE +#include MBEDTLS_CONFIG_FILE +#endif + +/* TBBR CoT definitions */ +#if defined(SPD_spmd) +#define COT_MAX_VERIFIED_PARAMS 8 +#elif defined(ARM_COT_cca) +#define COT_MAX_VERIFIED_PARAMS 8 +#else +#define COT_MAX_VERIFIED_PARAMS 4 +#endif + +/* + * Maximum key and hash sizes (in DER format). + * + * Both RSA and ECDSA keys may be used at the same time. In this case, the key + * buffers must be big enough to hold either. As RSA keys are bigger than ECDSA + * ones for all key sizes we support, they impose the minimum size of these + * buffers. + */ +#if TF_MBEDTLS_USE_RSA +#if TF_MBEDTLS_KEY_SIZE == 1024 +#define PK_DER_LEN 162 +#elif TF_MBEDTLS_KEY_SIZE == 2048 +#define PK_DER_LEN 294 +#elif TF_MBEDTLS_KEY_SIZE == 3072 +#define PK_DER_LEN 422 +#elif TF_MBEDTLS_KEY_SIZE == 4096 +#define PK_DER_LEN 550 +#else +#error "Invalid value for TF_MBEDTLS_KEY_SIZE" +#endif +#else /* Only using ECDSA keys. */ +#define PK_DER_LEN 92 +#endif + +#if TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA256 +#define HASH_DER_LEN 51 +#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA384 +#define HASH_DER_LEN 67 +#elif TF_MBEDTLS_HASH_ALG_ID == TF_MBEDTLS_SHA512 +#define HASH_DER_LEN 83 +#else +#error "Invalid value for TF_MBEDTLS_HASH_ALG_ID" +#endif + +#endif /* COT_DEF_H */ |