diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/auth/tbbr/tbbr_cot.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/auth/tbbr/tbbr_cot.c b/drivers/auth/tbbr/tbbr_cot.c index 6dd4ae252..2f1f451b1 100644 --- a/drivers/auth/tbbr/tbbr_cot.c +++ b/drivers/auth/tbbr/tbbr_cot.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -18,7 +18,12 @@ /* - * Maximum key and hash sizes (in DER format) + * 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 @@ -32,8 +37,8 @@ #else #error "Invalid value for TF_MBEDTLS_KEY_SIZE" #endif -#else -#define PK_DER_LEN 294 +#else /* Only using ECDSA keys. */ +#define PK_DER_LEN 91 #endif #define HASH_DER_LEN 83 |