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PSA: add and use PSA_EXPORT_ASYMMETRIC_KEY_MAX_SIZE

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Signed-off-by: Manuel Pégourié-Gonnard <manuel.pegourie-gonnard@arm.com>
This commit is contained in:
Manuel Pégourié-Gonnard
2026-02-12 11:04:00 +01:00
parent 00fd34ef18
commit 1cc0e98f68
2 changed files with 9 additions and 3 deletions
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4
include/psa/crypto_extra.h
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@@ -39,9 +39,9 @@ extern "C" {
#define MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE 1
#if PSA_EXPORT_KEY_PAIR_OR_PUBLIC_MAX_SIZE > MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE
#if PSA_EXPORT_ASYMMETRIC_KEY_MAX_SIZE > MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE
#undef MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE
#define MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE PSA_EXPORT_KEY_PAIR_OR_PUBLIC_MAX_SIZE
#define MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE PSA_EXPORT_ASYMMETRIC_KEY_MAX_SIZE
#endif
/* This covers ciphers, AEADs and CMAC. */

8
include/psa/crypto_sizes.h
View File

@@ -1038,10 +1038,16 @@
PSA_KEY_EXPORT_FFDH_PUBLIC_KEY_MAX_SIZE(PSA_VENDOR_FFDH_MAX_KEY_BITS)
#endif
#define PSA_EXPORT_KEY_PAIR_OR_PUBLIC_MAX_SIZE \
/* This is the name that was standardized in PSA Crypto v1.3 */
#define PSA_EXPORT_ASYMMETRIC_KEY_MAX_SIZE \
((PSA_EXPORT_KEY_PAIR_MAX_SIZE > PSA_EXPORT_PUBLIC_KEY_MAX_SIZE) ? \
PSA_EXPORT_KEY_PAIR_MAX_SIZE : PSA_EXPORT_PUBLIC_KEY_MAX_SIZE)
/* This is our old custom name from before it was in the spec,
* keep it around in case users were relying on it. */
#define PSA_EXPORT_KEY_PAIR_OR_PUBLIC_MAX_SIZE \
PSA_EXPORT_ASYMMETRIC_KEY_MAX_SIZE
/** Sufficient output buffer size for psa_raw_key_agreement().
*
* This macro returns a compile-time constant if its arguments are