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Move num_ops ECP abstraction fully into internal implementation

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Signed-off-by: Paul Elliott <paul.elliott@arm.com>
This commit is contained in:
Paul Elliott
2023-02-15 18:14:21 +00:00
parent c86d45e8a1
commit 93d9ca83ea
5 changed files with 42 additions and 36 deletions
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24
library/psa_crypto.c
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@@ -3487,13 +3487,16 @@ uint32_t mbedtls_psa_interruptible_get_max_ops(void)
}
uint32_t mbedtls_psa_sign_hash_get_num_ops(
const mbedtls_psa_sign_hash_interruptible_operation_t *operation)
mbedtls_psa_sign_hash_interruptible_operation_t *operation)
{
#if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \
defined(MBEDTLS_ECP_RESTARTABLE)
return operation->restart_ctx.ecp.ops_done;
/* Hide the fact that the restart context only holds a delta of number of
* ops done during the last operation, not an absolute value. */
operation->num_ops += operation->restart_ctx.ecp.ops_done;
return operation->num_ops;
#else
(void) operation;
return 0;
@@ -3503,13 +3506,16 @@ uint32_t mbedtls_psa_sign_hash_get_num_ops(
}
uint32_t mbedtls_psa_verify_hash_get_num_ops(
const mbedtls_psa_verify_hash_interruptible_operation_t *operation)
mbedtls_psa_verify_hash_interruptible_operation_t *operation)
{
#if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \
defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \
defined(MBEDTLS_ECP_RESTARTABLE)
return operation->restart_ctx.ecp.ops_done;
/* Hide the fact that the restart context only holds a delta of number of
* ops done during the last operation, not an absolute value. */
operation->num_ops += operation->restart_ctx.ecp.ops_done;
return operation->num_ops;
#else
(void) operation;
return 0;
@@ -3541,6 +3547,9 @@ psa_status_t mbedtls_psa_sign_hash_start(
mbedtls_ecdsa_restart_init(&operation->restart_ctx);
/* Ensure num_ops is zero'ed in case of context re-use. */
operation->num_ops = 0;
/* Ensure default is set even if
* mbedtls_psa_interruptible_set_max_ops() has not been called. */
mbedtls_psa_interruptible_set_max_ops(
@@ -3706,6 +3715,8 @@ psa_status_t mbedtls_psa_sign_hash_abort(
mbedtls_ecdsa_restart_free(&operation->restart_ctx);
operation->num_ops = 0;
return PSA_SUCCESS;
#else
@@ -3747,6 +3758,9 @@ psa_status_t mbedtls_psa_verify_hash_start(
mbedtls_mpi_init(&operation->r);
mbedtls_mpi_init(&operation->s);
/* Ensure num_ops is zero'ed in case of context re-use. */
operation->num_ops = 0;
/* Ensure default is set even if
* mbedtls_psa_interruptible_set_max_ops() has not been called. */
mbedtls_psa_interruptible_set_max_ops(
@@ -3864,6 +3878,8 @@ psa_status_t mbedtls_psa_verify_hash_abort(
mbedtls_ecdsa_restart_free(&operation->restart_ctx);
operation->num_ops = 0;
mbedtls_mpi_free(&operation->r);
mbedtls_mpi_free(&operation->s);