diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 5621cec..7afd7fc 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -2366,10 +2366,11 @@
 }
 
 psa_status_t psa_hash_update(psa_hash_operation_t *operation,
-                             const uint8_t *input,
+                             const uint8_t *input_external,
                              size_t input_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    LOCAL_INPUT_DECLARE(input_external, input);
 
     if (operation->id == 0) {
         status = PSA_ERROR_BAD_STATE;
@@ -2382,6 +2383,7 @@
         return PSA_SUCCESS;
     }
 
+    LOCAL_INPUT_ALLOC(input_external, input_length, input);
     status = psa_driver_wrapper_hash_update(operation, input, input_length);
 
 exit:
@@ -2389,32 +2391,57 @@
         psa_hash_abort(operation);
     }
 
+    LOCAL_INPUT_FREE(input_external, input);
     return status;
 }
 
-psa_status_t psa_hash_finish(psa_hash_operation_t *operation,
-                             uint8_t *hash,
-                             size_t hash_size,
-                             size_t *hash_length)
+static psa_status_t psa_hash_finish_internal(psa_hash_operation_t *operation,
+                                             uint8_t *hash,
+                                             size_t hash_size,
+                                             size_t *hash_length)
 {
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+
     *hash_length = 0;
     if (operation->id == 0) {
         return PSA_ERROR_BAD_STATE;
     }
 
-    psa_status_t status = psa_driver_wrapper_hash_finish(
+    status = psa_driver_wrapper_hash_finish(
         operation, hash, hash_size, hash_length);
     psa_hash_abort(operation);
+
+    return status;
+}
+
+psa_status_t psa_hash_finish(psa_hash_operation_t *operation,
+                             uint8_t *hash_external,
+                             size_t hash_size,
+                             size_t *hash_length)
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    LOCAL_OUTPUT_DECLARE(hash_external, hash);
+
+    LOCAL_OUTPUT_ALLOC(hash_external, hash_size, hash);
+    status = psa_hash_finish_internal(operation, hash, hash_size, hash_length);
+
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+exit:
+#endif
+    LOCAL_OUTPUT_FREE(hash_external, hash);
     return status;
 }
 
 psa_status_t psa_hash_verify(psa_hash_operation_t *operation,
-                             const uint8_t *hash,
+                             const uint8_t *hash_external,
                              size_t hash_length)
 {
     uint8_t actual_hash[PSA_HASH_MAX_SIZE];
     size_t actual_hash_length;
-    psa_status_t status = psa_hash_finish(
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    LOCAL_INPUT_DECLARE(hash_external, hash);
+
+    status = psa_hash_finish_internal(
         operation,
         actual_hash, sizeof(actual_hash),
         &actual_hash_length);
@@ -2428,6 +2455,7 @@
         goto exit;
     }
 
+    LOCAL_INPUT_ALLOC(hash_external, hash_length, hash);
     if (mbedtls_ct_memcmp(hash, actual_hash, actual_hash_length) != 0) {
         status = PSA_ERROR_INVALID_SIGNATURE;
     }
@@ -2437,36 +2465,55 @@
     if (status != PSA_SUCCESS) {
         psa_hash_abort(operation);
     }
-
+    LOCAL_INPUT_FREE(hash_external, hash);
     return status;
 }
 
 psa_status_t psa_hash_compute(psa_algorithm_t alg,
-                              const uint8_t *input, size_t input_length,
-                              uint8_t *hash, size_t hash_size,
+                              const uint8_t *input_external, size_t input_length,
+                              uint8_t *hash_external, size_t hash_size,
                               size_t *hash_length)
 {
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    LOCAL_INPUT_DECLARE(input_external, input);
+    LOCAL_OUTPUT_DECLARE(hash_external, hash);
+
     *hash_length = 0;
     if (!PSA_ALG_IS_HASH(alg)) {
         return PSA_ERROR_INVALID_ARGUMENT;
     }
 
-    return psa_driver_wrapper_hash_compute(alg, input, input_length,
-                                           hash, hash_size, hash_length);
+    LOCAL_INPUT_ALLOC(input_external, input_length, input);
+    LOCAL_OUTPUT_ALLOC(hash_external, hash_size, hash);
+    status = psa_driver_wrapper_hash_compute(alg, input, input_length,
+                                             hash, hash_size, hash_length);
+
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+exit:
+#endif
+    LOCAL_INPUT_FREE(input_external, input);
+    LOCAL_OUTPUT_FREE(hash_external, hash);
+    return status;
 }
 
 psa_status_t psa_hash_compare(psa_algorithm_t alg,
-                              const uint8_t *input, size_t input_length,
-                              const uint8_t *hash, size_t hash_length)
+                              const uint8_t *input_external, size_t input_length,
+                              const uint8_t *hash_external, size_t hash_length)
 {
     uint8_t actual_hash[PSA_HASH_MAX_SIZE];
     size_t actual_hash_length;
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+
+    LOCAL_INPUT_DECLARE(input_external, input);
+    LOCAL_INPUT_DECLARE(hash_external, hash);
 
     if (!PSA_ALG_IS_HASH(alg)) {
-        return PSA_ERROR_INVALID_ARGUMENT;
+        status = PSA_ERROR_INVALID_ARGUMENT;
+        return status;
     }
 
-    psa_status_t status = psa_driver_wrapper_hash_compute(
+    LOCAL_INPUT_ALLOC(input_external, input_length, input);
+    status = psa_driver_wrapper_hash_compute(
         alg, input, input_length,
         actual_hash, sizeof(actual_hash),
         &actual_hash_length);
@@ -2477,12 +2524,18 @@
         status = PSA_ERROR_INVALID_SIGNATURE;
         goto exit;
     }
+
+    LOCAL_INPUT_ALLOC(hash_external, hash_length, hash);
     if (mbedtls_ct_memcmp(hash, actual_hash, actual_hash_length) != 0) {
         status = PSA_ERROR_INVALID_SIGNATURE;
     }
 
 exit:
     mbedtls_platform_zeroize(actual_hash, sizeof(actual_hash));
+
+    LOCAL_INPUT_FREE(input_external, input);
+    LOCAL_INPUT_FREE(hash_external, hash);
+
     return status;
 }
 
@@ -4640,19 +4693,24 @@
 
 psa_status_t psa_aead_encrypt(mbedtls_svc_key_id_t key,
                               psa_algorithm_t alg,
-                              const uint8_t *nonce,
+                              const uint8_t *nonce_external,
                               size_t nonce_length,
-                              const uint8_t *additional_data,
+                              const uint8_t *additional_data_external,
                               size_t additional_data_length,
-                              const uint8_t *plaintext,
+                              const uint8_t *plaintext_external,
                               size_t plaintext_length,
-                              uint8_t *ciphertext,
+                              uint8_t *ciphertext_external,
                               size_t ciphertext_size,
                               size_t *ciphertext_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
 
+    LOCAL_INPUT_DECLARE(nonce_external, nonce);
+    LOCAL_INPUT_DECLARE(additional_data_external, additional_data);
+    LOCAL_INPUT_DECLARE(plaintext_external, plaintext);
+    LOCAL_OUTPUT_DECLARE(ciphertext_external, ciphertext);
+
     *ciphertext_length = 0;
 
     status = psa_aead_check_algorithm(alg);
@@ -4670,6 +4728,11 @@
         .core = slot->attr
     };
 
+    LOCAL_INPUT_ALLOC(nonce_external, nonce_length, nonce);
+    LOCAL_INPUT_ALLOC(additional_data_external, additional_data_length, additional_data);
+    LOCAL_INPUT_ALLOC(plaintext_external, plaintext_length, plaintext);
+    LOCAL_OUTPUT_ALLOC(ciphertext_external, ciphertext_size, ciphertext);
+
     status = psa_aead_check_nonce_length(alg, nonce_length);
     if (status != PSA_SUCCESS) {
         goto exit;
@@ -4688,6 +4751,11 @@
     }
 
 exit:
+    LOCAL_INPUT_FREE(nonce_external, nonce);
+    LOCAL_INPUT_FREE(additional_data_external, additional_data);
+    LOCAL_INPUT_FREE(plaintext_external, plaintext);
+    LOCAL_OUTPUT_FREE(ciphertext_external, ciphertext);
+
     psa_unregister_read(slot);
 
     return status;
@@ -4695,19 +4763,24 @@
 
 psa_status_t psa_aead_decrypt(mbedtls_svc_key_id_t key,
                               psa_algorithm_t alg,
-                              const uint8_t *nonce,
+                              const uint8_t *nonce_external,
                               size_t nonce_length,
-                              const uint8_t *additional_data,
+                              const uint8_t *additional_data_external,
                               size_t additional_data_length,
-                              const uint8_t *ciphertext,
+                              const uint8_t *ciphertext_external,
                               size_t ciphertext_length,
-                              uint8_t *plaintext,
+                              uint8_t *plaintext_external,
                               size_t plaintext_size,
                               size_t *plaintext_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
 
+    LOCAL_INPUT_DECLARE(nonce_external, nonce);
+    LOCAL_INPUT_DECLARE(additional_data_external, additional_data);
+    LOCAL_INPUT_DECLARE(ciphertext_external, ciphertext);
+    LOCAL_OUTPUT_DECLARE(plaintext_external, plaintext);
+
     *plaintext_length = 0;
 
     status = psa_aead_check_algorithm(alg);
@@ -4725,6 +4798,12 @@
         .core = slot->attr
     };
 
+    LOCAL_INPUT_ALLOC(nonce_external, nonce_length, nonce);
+    LOCAL_INPUT_ALLOC(additional_data_external, additional_data_length,
+                      additional_data);
+    LOCAL_INPUT_ALLOC(ciphertext_external, ciphertext_length, ciphertext);
+    LOCAL_OUTPUT_ALLOC(plaintext_external, plaintext_size, plaintext);
+
     status = psa_aead_check_nonce_length(alg, nonce_length);
     if (status != PSA_SUCCESS) {
         goto exit;
@@ -4743,6 +4822,11 @@
     }
 
 exit:
+    LOCAL_INPUT_FREE(nonce_external, nonce);
+    LOCAL_INPUT_FREE(additional_data_external, additional_data);
+    LOCAL_INPUT_FREE(ciphertext_external, ciphertext);
+    LOCAL_OUTPUT_FREE(plaintext_external, plaintext);
+
     psa_unregister_read(slot);
 
     return status;
@@ -4884,9 +4968,44 @@
     return psa_aead_setup(operation, 0, key, alg);
 }
 
+static psa_status_t psa_aead_set_nonce_internal(psa_aead_operation_t *operation,
+                                                const uint8_t *nonce,
+                                                size_t nonce_length)
+{
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+
+    if (operation->id == 0) {
+        status = PSA_ERROR_BAD_STATE;
+        goto exit;
+    }
+
+    if (operation->nonce_set) {
+        status = PSA_ERROR_BAD_STATE;
+        goto exit;
+    }
+
+    status = psa_aead_check_nonce_length(operation->alg, nonce_length);
+    if (status != PSA_SUCCESS) {
+        status = PSA_ERROR_INVALID_ARGUMENT;
+        goto exit;
+    }
+
+    status = psa_driver_wrapper_aead_set_nonce(operation, nonce,
+                                               nonce_length);
+
+exit:
+    if (status == PSA_SUCCESS) {
+        operation->nonce_set = 1;
+    } else {
+        psa_aead_abort(operation);
+    }
+
+    return status;
+}
+
 /* Generate a random nonce / IV for multipart AEAD operation */
 psa_status_t psa_aead_generate_nonce(psa_aead_operation_t *operation,
-                                     uint8_t *nonce,
+                                     uint8_t *nonce_external,
                                      size_t nonce_size,
                                      size_t *nonce_length)
 {
@@ -4894,6 +5013,9 @@
     uint8_t local_nonce[PSA_AEAD_NONCE_MAX_SIZE];
     size_t required_nonce_size = 0;
 
+    LOCAL_OUTPUT_DECLARE(nonce_external, nonce);
+    LOCAL_OUTPUT_ALLOC(nonce_external, nonce_size, nonce);
+
     *nonce_length = 0;
 
     if (operation->id == 0) {
@@ -4927,7 +5049,8 @@
         goto exit;
     }
 
-    status = psa_aead_set_nonce(operation, local_nonce, required_nonce_size);
+    status = psa_aead_set_nonce_internal(operation, local_nonce,
+                                         required_nonce_size);
 
 exit:
     if (status == PSA_SUCCESS) {
@@ -4937,42 +5060,30 @@
         psa_aead_abort(operation);
     }
 
+    LOCAL_OUTPUT_FREE(nonce_external, nonce);
+
     return status;
 }
 
 /* Set the nonce for a multipart authenticated encryption or decryption
    operation.*/
 psa_status_t psa_aead_set_nonce(psa_aead_operation_t *operation,
-                                const uint8_t *nonce,
+                                const uint8_t *nonce_external,
                                 size_t nonce_length)
 {
-    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    psa_status_t status;
 
-    if (operation->id == 0) {
-        status = PSA_ERROR_BAD_STATE;
-        goto exit;
-    }
+    LOCAL_INPUT_DECLARE(nonce_external, nonce);
+    LOCAL_INPUT_ALLOC(nonce_external, nonce_length, nonce);
 
-    if (operation->nonce_set) {
-        status = PSA_ERROR_BAD_STATE;
-        goto exit;
-    }
+    status = psa_aead_set_nonce_internal(operation, nonce, nonce_length);
 
-    status = psa_aead_check_nonce_length(operation->alg, nonce_length);
-    if (status != PSA_SUCCESS) {
-        status = PSA_ERROR_INVALID_ARGUMENT;
-        goto exit;
-    }
-
-    status = psa_driver_wrapper_aead_set_nonce(operation, nonce,
-                                               nonce_length);
-
+/* Exit label is only needed for buffer copying, prevent unused warnings. */
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
 exit:
-    if (status == PSA_SUCCESS) {
-        operation->nonce_set = 1;
-    } else {
-        psa_aead_abort(operation);
-    }
+#endif
+
+    LOCAL_INPUT_FREE(nonce_external, nonce);
 
     return status;
 }
@@ -5044,11 +5155,14 @@
 
 /* Pass additional data to an active multipart AEAD operation. */
 psa_status_t psa_aead_update_ad(psa_aead_operation_t *operation,
-                                const uint8_t *input,
+                                const uint8_t *input_external,
                                 size_t input_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
+    LOCAL_INPUT_DECLARE(input_external, input);
+    LOCAL_INPUT_ALLOC(input_external, input_length, input);
+
     if (operation->id == 0) {
         status = PSA_ERROR_BAD_STATE;
         goto exit;
@@ -5084,20 +5198,29 @@
         psa_aead_abort(operation);
     }
 
+    LOCAL_INPUT_FREE(input_external, input);
+
     return status;
 }
 
 /* Encrypt or decrypt a message fragment in an active multipart AEAD
    operation.*/
 psa_status_t psa_aead_update(psa_aead_operation_t *operation,
-                             const uint8_t *input,
+                             const uint8_t *input_external,
                              size_t input_length,
-                             uint8_t *output,
+                             uint8_t *output_external,
                              size_t output_size,
                              size_t *output_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
+
+    LOCAL_INPUT_DECLARE(input_external, input);
+    LOCAL_OUTPUT_DECLARE(output_external, output);
+
+    LOCAL_INPUT_ALLOC(input_external, input_length, input);
+    LOCAL_OUTPUT_ALLOC(output_external, output_size, output);
+
     *output_length = 0;
 
     if (operation->id == 0) {
@@ -5144,6 +5267,9 @@
         psa_aead_abort(operation);
     }
 
+    LOCAL_INPUT_FREE(input_external, input);
+    LOCAL_OUTPUT_FREE(output_external, output);
+
     return status;
 }
 
@@ -5163,15 +5289,21 @@
 
 /* Finish encrypting a message in a multipart AEAD operation. */
 psa_status_t psa_aead_finish(psa_aead_operation_t *operation,
-                             uint8_t *ciphertext,
+                             uint8_t *ciphertext_external,
                              size_t ciphertext_size,
                              size_t *ciphertext_length,
-                             uint8_t *tag,
+                             uint8_t *tag_external,
                              size_t tag_size,
                              size_t *tag_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
+    LOCAL_OUTPUT_DECLARE(ciphertext_external, ciphertext);
+    LOCAL_OUTPUT_DECLARE(tag_external, tag);
+
+    LOCAL_OUTPUT_ALLOC(ciphertext_external, ciphertext_size, ciphertext);
+    LOCAL_OUTPUT_ALLOC(tag_external, tag_size, tag);
+
     *ciphertext_length = 0;
     *tag_length = tag_size;
 
@@ -5202,20 +5334,29 @@
 
     psa_aead_abort(operation);
 
+    LOCAL_OUTPUT_FREE(ciphertext_external, ciphertext);
+    LOCAL_OUTPUT_FREE(tag_external, tag);
+
     return status;
 }
 
 /* Finish authenticating and decrypting a message in a multipart AEAD
    operation.*/
 psa_status_t psa_aead_verify(psa_aead_operation_t *operation,
-                             uint8_t *plaintext,
+                             uint8_t *plaintext_external,
                              size_t plaintext_size,
                              size_t *plaintext_length,
-                             const uint8_t *tag,
+                             const uint8_t *tag_external,
                              size_t tag_length)
 {
     psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
 
+    LOCAL_OUTPUT_DECLARE(plaintext_external, plaintext);
+    LOCAL_INPUT_DECLARE(tag_external, tag);
+
+    LOCAL_OUTPUT_ALLOC(plaintext_external, plaintext_size, plaintext);
+    LOCAL_INPUT_ALLOC(tag_external, tag_length, tag);
+
     *plaintext_length = 0;
 
     status = psa_aead_final_checks(operation);
@@ -5236,6 +5377,9 @@
 exit:
     psa_aead_abort(operation);
 
+    LOCAL_OUTPUT_FREE(plaintext_external, plaintext);
+    LOCAL_INPUT_FREE(tag_external, tag);
+
     return status;
 }
 
@@ -5842,10 +5986,12 @@
 
 psa_status_t psa_key_derivation_output_bytes(
     psa_key_derivation_operation_t *operation,
-    uint8_t *output,
+    uint8_t *output_external,
     size_t output_length)
 {
     psa_status_t status;
+    LOCAL_OUTPUT_DECLARE(output_external, output);
+
     psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation);
 
     if (operation->alg == 0) {
@@ -5853,13 +5999,6 @@
         return PSA_ERROR_BAD_STATE;
     }
 
-    if (output_length > operation->capacity) {
-        operation->capacity = 0;
-        /* Go through the error path to wipe all confidential data now
-         * that the operation object is useless. */
-        status = PSA_ERROR_INSUFFICIENT_DATA;
-        goto exit;
-    }
     if (output_length == 0 && operation->capacity == 0) {
         /* Edge case: this is a finished operation, and 0 bytes
          * were requested. The right error in this case could
@@ -5869,6 +6008,16 @@
          * output_length > 0. */
         return PSA_ERROR_INSUFFICIENT_DATA;
     }
+
+    LOCAL_OUTPUT_ALLOC(output_external, output_length, output);
+    if (output_length > operation->capacity) {
+        operation->capacity = 0;
+        /* Go through the error path to wipe all confidential data now
+         * that the operation object is useless. */
+        status = PSA_ERROR_INSUFFICIENT_DATA;
+        goto exit;
+    }
+
     operation->capacity -= output_length;
 
 #if defined(BUILTIN_ALG_ANY_HKDF)
@@ -5902,7 +6051,10 @@
 
     {
         (void) kdf_alg;
-        return PSA_ERROR_BAD_STATE;
+        status = PSA_ERROR_BAD_STATE;
+        LOCAL_OUTPUT_FREE(output_external, output);
+
+        return status;
     }
 
 exit:
@@ -5914,8 +6066,12 @@
         psa_algorithm_t alg = operation->alg;
         psa_key_derivation_abort(operation);
         operation->alg = alg;
-        memset(output, '!', output_length);
+        if (output != NULL) {
+            memset(output, '!', output_length);
+        }
     }
+
+    LOCAL_OUTPUT_FREE(output_external, output);
     return status;
 }
 
@@ -6895,12 +7051,12 @@
 {
     psa_status_t status = PSA_SUCCESS;
     if (input_len > PSA_HASH_BLOCK_LENGTH(hash_alg)) {
-        status = psa_hash_compute(hash_alg, input, input_len, output,
-                                  PSA_HMAC_MAX_HASH_BLOCK_SIZE, output_len);
-    } else {
+        return psa_hash_compute(hash_alg, input, input_len, output,
+                                PSA_HMAC_MAX_HASH_BLOCK_SIZE, output_len);
+    } else if (input_len > 0) {
         memcpy(output, input, input_len);
-        *output_len = PSA_HASH_BLOCK_LENGTH(hash_alg);
     }
+    *output_len = PSA_HASH_BLOCK_LENGTH(hash_alg);
     return status;
 }
 #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */
@@ -7134,12 +7290,22 @@
 psa_status_t psa_key_derivation_input_bytes(
     psa_key_derivation_operation_t *operation,
     psa_key_derivation_step_t step,
-    const uint8_t *data,
+    const uint8_t *data_external,
     size_t data_length)
 {
-    return psa_key_derivation_input_internal(operation, step,
-                                             PSA_KEY_TYPE_NONE,
-                                             data, data_length);
+    psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED;
+    LOCAL_INPUT_DECLARE(data_external, data);
+
+    LOCAL_INPUT_ALLOC(data_external, data_length, data);
+
+    status = psa_key_derivation_input_internal(operation, step,
+                                               PSA_KEY_TYPE_NONE,
+                                               data, data_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+exit:
+#endif
+    LOCAL_INPUT_FREE(data_external, data);
+    return status;
 }
 
 psa_status_t psa_key_derivation_input_integer(
diff --git a/tests/scripts/generate_psa_wrappers.py b/tests/scripts/generate_psa_wrappers.py
index 1f3b127..ef28cbf 100755
--- a/tests/scripts/generate_psa_wrappers.py
+++ b/tests/scripts/generate_psa_wrappers.py
@@ -142,9 +142,13 @@
                                     _buffer_name: Optional[str]) -> bool:
         """Whether the specified buffer argument to a PSA function should be copied.
         """
-        # Proof-of-concept: just instrument one function for now
+        if function_name.startswith('psa_aead'):
+            return True
         if function_name == 'psa_cipher_encrypt':
             return True
+        if function_name in ('psa_key_derivation_output_bytes',
+                             'psa_key_derivation_input_bytes'):
+            return True
         if function_name in ('psa_import_key',
                              'psa_export_key',
                              'psa_export_public_key'):
@@ -154,6 +158,12 @@
                              'psa_sign_hash',
                              'psa_verify_hash'):
             return True
+        if function_name in ('psa_hash_update',
+                             'psa_hash_finish',
+                             'psa_hash_verify',
+                             'psa_hash_compute',
+                             'psa_hash_compare'):
+            return True
         if function_name in ('psa_mac_update',
                              'psa_mac_sign_finish',
                              'psa_mac_verify_finish',
diff --git a/tests/src/psa_test_wrappers.c b/tests/src/psa_test_wrappers.c
index 333a85c..4824e38 100644
--- a/tests/src/psa_test_wrappers.c
+++ b/tests/src/psa_test_wrappers.c
@@ -70,7 +70,19 @@
     size_t arg9_plaintext_size,
     size_t *arg10_plaintext_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg2_nonce, arg3_nonce_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg4_additional_data, arg5_additional_data_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg6_ciphertext, arg7_ciphertext_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg8_plaintext, arg9_plaintext_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_aead_decrypt)(arg0_key, arg1_alg, arg2_nonce, arg3_nonce_length, arg4_additional_data, arg5_additional_data_length, arg6_ciphertext, arg7_ciphertext_length, arg8_plaintext, arg9_plaintext_size, arg10_plaintext_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg2_nonce, arg3_nonce_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg4_additional_data, arg5_additional_data_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg6_ciphertext, arg7_ciphertext_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg8_plaintext, arg9_plaintext_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -98,7 +110,19 @@
     size_t arg9_ciphertext_size,
     size_t *arg10_ciphertext_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg2_nonce, arg3_nonce_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg4_additional_data, arg5_additional_data_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg6_plaintext, arg7_plaintext_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg8_ciphertext, arg9_ciphertext_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_aead_encrypt)(arg0_key, arg1_alg, arg2_nonce, arg3_nonce_length, arg4_additional_data, arg5_additional_data_length, arg6_plaintext, arg7_plaintext_length, arg8_ciphertext, arg9_ciphertext_size, arg10_ciphertext_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg2_nonce, arg3_nonce_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg4_additional_data, arg5_additional_data_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg6_plaintext, arg7_plaintext_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg8_ciphertext, arg9_ciphertext_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -122,7 +146,15 @@
     size_t arg5_tag_size,
     size_t *arg6_tag_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_ciphertext, arg2_ciphertext_size);
+    MBEDTLS_TEST_MEMORY_POISON(arg4_tag, arg5_tag_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_aead_finish)(arg0_operation, arg1_ciphertext, arg2_ciphertext_size, arg3_ciphertext_length, arg4_tag, arg5_tag_size, arg6_tag_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_ciphertext, arg2_ciphertext_size);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg4_tag, arg5_tag_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -133,7 +165,13 @@
     size_t arg2_nonce_size,
     size_t *arg3_nonce_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_nonce, arg2_nonce_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_aead_generate_nonce)(arg0_operation, arg1_nonce, arg2_nonce_size, arg3_nonce_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_nonce, arg2_nonce_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -153,7 +191,13 @@
     const uint8_t *arg1_nonce,
     size_t arg2_nonce_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_nonce, arg2_nonce_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_aead_set_nonce)(arg0_operation, arg1_nonce, arg2_nonce_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_nonce, arg2_nonce_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -166,7 +210,15 @@
     size_t arg4_output_size,
     size_t *arg5_output_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg3_output, arg4_output_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_aead_update)(arg0_operation, arg1_input, arg2_input_length, arg3_output, arg4_output_size, arg5_output_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg3_output, arg4_output_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -176,7 +228,13 @@
     const uint8_t *arg1_input,
     size_t arg2_input_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_aead_update_ad)(arg0_operation, arg1_input, arg2_input_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -189,7 +247,15 @@
     const uint8_t *arg4_tag,
     size_t arg5_tag_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_plaintext, arg2_plaintext_size);
+    MBEDTLS_TEST_MEMORY_POISON(arg4_tag, arg5_tag_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_aead_verify)(arg0_operation, arg1_plaintext, arg2_plaintext_size, arg3_plaintext_length, arg4_tag, arg5_tag_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_plaintext, arg2_plaintext_size);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg4_tag, arg5_tag_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -514,7 +580,15 @@
     const uint8_t *arg3_hash,
     size_t arg4_hash_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg3_hash, arg4_hash_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_hash_compare)(arg0_alg, arg1_input, arg2_input_length, arg3_hash, arg4_hash_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg3_hash, arg4_hash_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -527,7 +601,15 @@
     size_t arg4_hash_size,
     size_t *arg5_hash_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg3_hash, arg4_hash_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_hash_compute)(arg0_alg, arg1_input, arg2_input_length, arg3_hash, arg4_hash_size, arg5_hash_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg3_hash, arg4_hash_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -538,7 +620,13 @@
     size_t arg2_hash_size,
     size_t *arg3_hash_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_hash, arg2_hash_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_hash_finish)(arg0_operation, arg1_hash, arg2_hash_size, arg3_hash_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_hash, arg2_hash_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -557,7 +645,13 @@
     const uint8_t *arg1_input,
     size_t arg2_input_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_input, arg2_input_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_hash_update)(arg0_operation, arg1_input, arg2_input_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_input, arg2_input_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -567,7 +661,13 @@
     const uint8_t *arg1_hash,
     size_t arg2_hash_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_hash, arg2_hash_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_hash_verify)(arg0_operation, arg1_hash, arg2_hash_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_hash, arg2_hash_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -612,7 +712,13 @@
     const uint8_t *arg2_data,
     size_t arg3_data_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg2_data, arg3_data_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_key_derivation_input_bytes)(arg0_operation, arg1_step, arg2_data, arg3_data_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg2_data, arg3_data_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -654,7 +760,13 @@
     uint8_t *arg1_output,
     size_t arg2_output_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg1_output, arg2_output_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_key_derivation_output_bytes)(arg0_operation, arg1_output, arg2_output_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg1_output, arg2_output_length);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index 63a65a1..f544b41 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -5131,7 +5131,9 @@
     psa_key_type_t key_type = key_type_arg;
     psa_algorithm_t alg = alg_arg;
     psa_aead_operation_t operation = PSA_AEAD_OPERATION_INIT;
-    uint8_t nonce_buffer[PSA_AEAD_NONCE_MAX_SIZE];
+    /* Some tests try to get more than the maximum nonce length,
+     * so allocate double. */
+    uint8_t nonce_buffer[PSA_AEAD_NONCE_MAX_SIZE * 2];
     psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
     psa_status_t status = PSA_ERROR_GENERIC_ERROR;
     psa_status_t expected_status = expected_status_arg;