diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index fe0114f..7046a31 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -1324,10 +1324,7 @@
         return status;
     }
 
-    psa_key_attributes_t attributes = {
-        .core = slot->attr.core
-    };
-    status = psa_driver_wrapper_export_key(&attributes,
+    status = psa_driver_wrapper_export_key(&slot->attr,
                                            slot->key.data, slot->key.bytes,
                                            data, data_size, data_length);
 
@@ -1411,7 +1408,6 @@
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
-    psa_key_attributes_t attributes;
 
     /* Reject a zero-length output buffer now, since this can never be a
      * valid key representation. This way we know that data must be a valid
@@ -1437,11 +1433,8 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
     status = psa_driver_wrapper_export_public_key(
-        &attributes, slot->key.data, slot->key.bytes,
+        &slot->attr, slot->key.data, slot->key.bytes,
         data, data_size, data_length);
 
 exit:
@@ -2372,7 +2365,6 @@
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot = NULL;
-    psa_key_attributes_t attributes;
 
     /* A context must be freshly initialized before it can be set up. */
     if (operation->id != 0) {
@@ -2389,11 +2381,7 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
-    status = psa_mac_finalize_alg_and_key_validation(alg, &attributes,
+    status = psa_mac_finalize_alg_and_key_validation(alg, &slot->attr,
                                                      &operation->mac_size);
     if (status != PSA_SUCCESS) {
         goto exit;
@@ -2403,13 +2391,13 @@
     /* Dispatch the MAC setup call with validated input */
     if (is_sign) {
         status = psa_driver_wrapper_mac_sign_setup(operation,
-                                                   &attributes,
+                                                   &slot->attr,
                                                    slot->key.data,
                                                    slot->key.bytes,
                                                    alg);
     } else {
         status = psa_driver_wrapper_mac_verify_setup(operation,
-                                                     &attributes,
+                                                     &slot->attr,
                                                      slot->key.data,
                                                      slot->key.bytes,
                                                      alg);
@@ -2559,7 +2547,6 @@
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
     uint8_t operation_mac_size = 0;
-    psa_key_attributes_t attributes;
 
     status = psa_get_and_lock_key_slot_with_policy(
         key,
@@ -2570,11 +2557,7 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
-    status = psa_mac_finalize_alg_and_key_validation(alg, &attributes,
+    status = psa_mac_finalize_alg_and_key_validation(alg, &slot->attr,
                                                      &operation_mac_size);
     if (status != PSA_SUCCESS) {
         goto exit;
@@ -2586,7 +2569,7 @@
     }
 
     status = psa_driver_wrapper_mac_compute(
-        &attributes,
+        &slot->attr,
         slot->key.data, slot->key.bytes,
         alg,
         input, input_length,
@@ -2696,7 +2679,6 @@
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
-    psa_key_attributes_t attributes;
 
     *signature_length = 0;
 
@@ -2728,19 +2710,15 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
     if (input_is_message) {
         status = psa_driver_wrapper_sign_message(
-            &attributes, slot->key.data, slot->key.bytes,
+            &slot->attr, slot->key.data, slot->key.bytes,
             alg, input, input_length,
             signature, signature_size, signature_length);
     } else {
 
         status = psa_driver_wrapper_sign_hash(
-            &attributes, slot->key.data, slot->key.bytes,
+            &slot->attr, slot->key.data, slot->key.bytes,
             alg, input, input_length,
             signature, signature_size, signature_length);
     }
@@ -2782,18 +2760,14 @@
         return status;
     }
 
-    psa_key_attributes_t attributes = {
-        .core = slot->attr.core
-    };
-
     if (input_is_message) {
         status = psa_driver_wrapper_verify_message(
-            &attributes, slot->key.data, slot->key.bytes,
+            &slot->attr, slot->key.data, slot->key.bytes,
             alg, input, input_length,
             signature, signature_length);
     } else {
         status = psa_driver_wrapper_verify_hash(
-            &attributes, slot->key.data, slot->key.bytes,
+            &slot->attr, slot->key.data, slot->key.bytes,
             alg, input, input_length,
             signature, signature_length);
     }
@@ -3031,7 +3005,6 @@
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
-    psa_key_attributes_t attributes;
 
     (void) input;
     (void) input_length;
@@ -3056,12 +3029,8 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
     status = psa_driver_wrapper_asymmetric_encrypt(
-        &attributes, slot->key.data, slot->key.bytes,
+        &slot->attr, slot->key.data, slot->key.bytes,
         alg, input, input_length, salt, salt_length,
         output, output_size, output_length);
 exit:
@@ -3083,7 +3052,6 @@
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
-    psa_key_attributes_t attributes;
 
     (void) input;
     (void) input_length;
@@ -3107,12 +3075,8 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
     status = psa_driver_wrapper_asymmetric_decrypt(
-        &attributes, slot->key.data, slot->key.bytes,
+        &slot->attr, slot->key.data, slot->key.bytes,
         alg, input, input_length, salt, salt_length,
         output, output_size, output_length);
 
@@ -3181,7 +3145,6 @@
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
-    psa_key_attributes_t attributes;
 
     /* Check that start has not been previously called, or operation has not
      * previously errored. */
@@ -3208,14 +3171,10 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
     /* Ensure ops count gets reset, in case of operation re-use. */
     operation->num_ops = 0;
 
-    status = psa_driver_wrapper_sign_hash_start(operation, &attributes,
+    status = psa_driver_wrapper_sign_hash_start(operation, &slot->attr,
                                                 slot->key.data,
                                                 slot->key.bytes, alg,
                                                 hash, hash_length);
@@ -3353,14 +3312,10 @@
         return status;
     }
 
-    psa_key_attributes_t attributes = {
-        .core = slot->attr.core
-    };
-
     /* Ensure ops count gets reset, in case of operation re-use. */
     operation->num_ops = 0;
 
-    status = psa_driver_wrapper_verify_hash_start(operation, &attributes,
+    status = psa_driver_wrapper_verify_hash_start(operation, &slot->attr,
                                                   slot->key.data,
                                                   slot->key.bytes,
                                                   alg, hash, hash_length,
@@ -3889,7 +3844,6 @@
     psa_key_usage_t usage = (cipher_operation == MBEDTLS_ENCRYPT ?
                              PSA_KEY_USAGE_ENCRYPT :
                              PSA_KEY_USAGE_DECRYPT);
-    psa_key_attributes_t attributes;
 
     /* A context must be freshly initialized before it can be set up. */
     if (operation->id != 0) {
@@ -3919,20 +3873,16 @@
     }
     operation->default_iv_length = PSA_CIPHER_IV_LENGTH(slot->attr.type, alg);
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
     /* Try doing the operation through a driver before using software fallback. */
     if (cipher_operation == MBEDTLS_ENCRYPT) {
         status = psa_driver_wrapper_cipher_encrypt_setup(operation,
-                                                         &attributes,
+                                                         &slot->attr,
                                                          slot->key.data,
                                                          slot->key.bytes,
                                                          alg);
     } else {
         status = psa_driver_wrapper_cipher_decrypt_setup(operation,
-                                                         &attributes,
+                                                         &slot->attr,
                                                          slot->key.data,
                                                          slot->key.bytes,
                                                          alg);
@@ -4145,7 +4095,6 @@
     psa_key_slot_t *slot = NULL;
     uint8_t local_iv[PSA_CIPHER_IV_MAX_SIZE];
     size_t default_iv_length = 0;
-    psa_key_attributes_t attributes;
 
     if (!PSA_ALG_IS_CIPHER(alg)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
@@ -4159,10 +4108,6 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
     default_iv_length = PSA_CIPHER_IV_LENGTH(slot->attr.type, alg);
     if (default_iv_length > PSA_CIPHER_IV_MAX_SIZE) {
         status = PSA_ERROR_GENERIC_ERROR;
@@ -4182,7 +4127,7 @@
     }
 
     status = psa_driver_wrapper_cipher_encrypt(
-        &attributes, slot->key.data, slot->key.bytes,
+        &slot->attr, slot->key.data, slot->key.bytes,
         alg, local_iv, default_iv_length, input, input_length,
         psa_crypto_buffer_offset(output, default_iv_length),
         output_size - default_iv_length, output_length);
@@ -4216,7 +4161,6 @@
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot = NULL;
-    psa_key_attributes_t attributes;
 
     if (!PSA_ALG_IS_CIPHER(alg)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
@@ -4230,10 +4174,6 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
     if (alg == PSA_ALG_CCM_STAR_NO_TAG &&
         input_length < PSA_BLOCK_CIPHER_BLOCK_LENGTH(slot->attr.type)) {
         status = PSA_ERROR_INVALID_ARGUMENT;
@@ -4244,7 +4184,7 @@
     }
 
     status = psa_driver_wrapper_cipher_decrypt(
-        &attributes, slot->key.data, slot->key.bytes,
+        &slot->attr, slot->key.data, slot->key.bytes,
         alg, input, input_length,
         output, output_size, output_length);
 
@@ -4353,17 +4293,13 @@
         return status;
     }
 
-    psa_key_attributes_t attributes = {
-        .core = slot->attr.core
-    };
-
     status = psa_aead_check_nonce_length(alg, nonce_length);
     if (status != PSA_SUCCESS) {
         goto exit;
     }
 
     status = psa_driver_wrapper_aead_encrypt(
-        &attributes, slot->key.data, slot->key.bytes,
+        &slot->attr, slot->key.data, slot->key.bytes,
         alg,
         nonce, nonce_length,
         additional_data, additional_data_length,
@@ -4408,17 +4344,13 @@
         return status;
     }
 
-    psa_key_attributes_t attributes = {
-        .core = slot->attr.core
-    };
-
     status = psa_aead_check_nonce_length(alg, nonce_length);
     if (status != PSA_SUCCESS) {
         goto exit;
     }
 
     status = psa_driver_wrapper_aead_decrypt(
-        &attributes, slot->key.data, slot->key.bytes,
+        &slot->attr, slot->key.data, slot->key.bytes,
         alg,
         nonce, nonce_length,
         additional_data, additional_data_length,
@@ -4484,7 +4416,6 @@
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot = NULL;
     psa_key_usage_t key_usage = 0;
-    psa_key_attributes_t attributes;
 
     status = psa_aead_check_algorithm(alg);
     if (status != PSA_SUCCESS) {
@@ -4514,23 +4445,19 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
     if ((status = psa_validate_tag_length(alg)) != PSA_SUCCESS) {
         goto exit;
     }
 
     if (is_encrypt) {
         status = psa_driver_wrapper_aead_encrypt_setup(operation,
-                                                       &attributes,
+                                                       &slot->attr,
                                                        slot->key.data,
                                                        slot->key.bytes,
                                                        alg);
     } else {
         status = psa_driver_wrapper_aead_decrypt_setup(operation,
-                                                       &attributes,
+                                                       &slot->attr,
                                                        slot->key.data,
                                                        slot->key.bytes,
                                                        alg);
@@ -4539,7 +4466,7 @@
         goto exit;
     }
 
-    operation->key_type = psa_get_key_type(&attributes);
+    operation->key_type = psa_get_key_type(&slot->attr);
 
 exit:
     unlock_status = psa_unregister_read_under_mutex(slot);
@@ -5842,7 +5769,6 @@
     size_t bytes = PSA_BITS_TO_BYTES(bits);
     size_t storage_size = bytes;
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
-    psa_key_attributes_t attributes;
 
     if (PSA_KEY_TYPE_IS_PUBLIC_KEY(slot->attr.type)) {
         return PSA_ERROR_INVALID_ARGUMENT;
@@ -5891,12 +5817,9 @@
     }
 
     slot->attr.bits = (psa_key_bits_t) bits;
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
 
-    if (psa_key_lifetime_is_external(attributes.core.lifetime)) {
-        status = psa_driver_wrapper_get_key_buffer_size(&attributes,
+    if (psa_key_lifetime_is_external(slot->attr.core.lifetime)) {
+        status = psa_driver_wrapper_get_key_buffer_size(&slot->attr,
                                                         &storage_size);
         if (status != PSA_SUCCESS) {
             goto exit;
@@ -5907,7 +5830,7 @@
         goto exit;
     }
 
-    status = psa_driver_wrapper_import_key(&attributes,
+    status = psa_driver_wrapper_import_key(&slot->attr,
                                            data, bytes,
                                            slot->key.data,
                                            slot->key.bytes,
@@ -7023,11 +6946,7 @@
         return PSA_ERROR_NOT_SUPPORTED;
     }
 
-    psa_key_attributes_t attributes = {
-        .core = private_key->attr.core
-    };
-
-    return psa_driver_wrapper_key_agreement(&attributes,
+    return psa_driver_wrapper_key_agreement(&private_key->attr,
                                             private_key->key.data,
                                             private_key->key.bytes, alg,
                                             peer_key, peer_key_length,
@@ -7823,7 +7742,6 @@
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot = NULL;
-    psa_key_attributes_t attributes;
     psa_key_type_t type;
 
     if (operation->stage != PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) {
@@ -7838,11 +7756,7 @@
         goto exit;
     }
 
-    attributes = (psa_key_attributes_t) {
-        .core = slot->attr.core
-    };
-
-    type = psa_get_key_type(&attributes);
+    type = psa_get_key_type(&slot->attr);
 
     if (type != PSA_KEY_TYPE_PASSWORD &&
         type != PSA_KEY_TYPE_PASSWORD_HASH) {