diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 7afd7fcf6..eab5aa552 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -3377,11 +3377,11 @@ exit:
 
 psa_status_t psa_asymmetric_encrypt(mbedtls_svc_key_id_t key,
                                     psa_algorithm_t alg,
-                                    const uint8_t *input,
+                                    const uint8_t *input_external,
                                     size_t input_length,
-                                    const uint8_t *salt,
+                                    const uint8_t *salt_external,
                                     size_t salt_length,
-                                    uint8_t *output,
+                                    uint8_t *output_external,
                                     size_t output_size,
                                     size_t *output_length)
 {
@@ -3389,6 +3389,9 @@ psa_status_t psa_asymmetric_encrypt(mbedtls_svc_key_id_t key,
     psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED;
     psa_key_slot_t *slot;
     psa_key_attributes_t attributes;
+    LOCAL_INPUT_DECLARE(input_external, input);
+    LOCAL_INPUT_DECLARE(salt_external, salt);
+    LOCAL_OUTPUT_DECLARE(output_external, output);
 
     (void) input;
     (void) input_length;
@@ -3417,6 +3420,9 @@ psa_status_t psa_asymmetric_encrypt(mbedtls_svc_key_id_t key,
         .core = slot->attr
     };
 
+    LOCAL_INPUT_ALLOC(input_external, input_length, input);
+    LOCAL_INPUT_ALLOC(salt_external, salt_length, salt);
+    LOCAL_OUTPUT_ALLOC(output_external, output_size, output);
     status = psa_driver_wrapper_asymmetric_encrypt(
         &attributes, slot->key.data, slot->key.bytes,
         alg, input, input_length, salt, salt_length,
@@ -3424,16 +3430,20 @@ psa_status_t psa_asymmetric_encrypt(mbedtls_svc_key_id_t key,
 exit:
     unlock_status = psa_unregister_read(slot);
 
+    LOCAL_INPUT_FREE(input_external, input);
+    LOCAL_INPUT_FREE(salt_external, salt);
+    LOCAL_OUTPUT_FREE(output_external, output);
+
     return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
 psa_status_t psa_asymmetric_decrypt(mbedtls_svc_key_id_t key,
                                     psa_algorithm_t alg,
-                                    const uint8_t *input,
+                                    const uint8_t *input_external,
                                     size_t input_length,
-                                    const uint8_t *salt,
+                                    const uint8_t *salt_external,
                                     size_t salt_length,
-                                    uint8_t *output,
+                                    uint8_t *output_external,
                                     size_t output_size,
                                     size_t *output_length)
 {
@@ -3442,6 +3452,10 @@ psa_status_t psa_asymmetric_decrypt(mbedtls_svc_key_id_t key,
     psa_key_slot_t *slot;
     psa_key_attributes_t attributes;
 
+    LOCAL_INPUT_DECLARE(input_external, input);
+    LOCAL_INPUT_DECLARE(salt_external, salt);
+    LOCAL_OUTPUT_DECLARE(output_external, output);
+
     (void) input;
     (void) input_length;
     (void) salt;
@@ -3468,6 +3482,9 @@ psa_status_t psa_asymmetric_decrypt(mbedtls_svc_key_id_t key,
         .core = slot->attr
     };
 
+    LOCAL_INPUT_ALLOC(input_external, input_length, input);
+    LOCAL_INPUT_ALLOC(salt_external, salt_length, salt);
+    LOCAL_OUTPUT_ALLOC(output_external, output_size, output);
     status = psa_driver_wrapper_asymmetric_decrypt(
         &attributes, slot->key.data, slot->key.bytes,
         alg, input, input_length, salt, salt_length,
@@ -3476,6 +3493,10 @@ psa_status_t psa_asymmetric_decrypt(mbedtls_svc_key_id_t key,
 exit:
     unlock_status = psa_unregister_read(slot);
 
+    LOCAL_INPUT_FREE(input_external, input);
+    LOCAL_INPUT_FREE(salt_external, salt);
+    LOCAL_OUTPUT_FREE(output_external, output);
+
     return (status == PSA_SUCCESS) ? unlock_status : status;
 }
 
diff --git a/tests/scripts/generate_psa_wrappers.py b/tests/scripts/generate_psa_wrappers.py
index 0918dccb2..2418f4758 100755
--- a/tests/scripts/generate_psa_wrappers.py
+++ b/tests/scripts/generate_psa_wrappers.py
@@ -171,6 +171,9 @@ class PSAWrapperGenerator(c_wrapper_generator.Base):
                              'psa_mac_compute',
                              'psa_mac_verify'):
             return True
+        if function_name in ('psa_asymmetric_encrypt',
+                             'psa_asymmetric_decrypt'):
+            return True
         return False
 
     def _write_function_call(self, out: typing_util.Writable,
diff --git a/tests/src/psa_test_wrappers.c b/tests/src/psa_test_wrappers.c
index 4824e3806..d506924b6 100644
--- a/tests/src/psa_test_wrappers.c
+++ b/tests/src/psa_test_wrappers.c
@@ -271,7 +271,17 @@ psa_status_t mbedtls_test_wrap_psa_asymmetric_decrypt(
     size_t arg7_output_size,
     size_t *arg8_output_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg4_salt, arg5_salt_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg6_output, arg7_output_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_asymmetric_decrypt)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_salt, arg5_salt_length, arg6_output, arg7_output_size, arg8_output_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg4_salt, arg5_salt_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg6_output, arg7_output_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }
 
@@ -287,7 +297,17 @@ psa_status_t mbedtls_test_wrap_psa_asymmetric_encrypt(
     size_t arg7_output_size,
     size_t *arg8_output_length)
 {
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_POISON(arg2_input, arg3_input_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg4_salt, arg5_salt_length);
+    MBEDTLS_TEST_MEMORY_POISON(arg6_output, arg7_output_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     psa_status_t status = (psa_asymmetric_encrypt)(arg0_key, arg1_alg, arg2_input, arg3_input_length, arg4_salt, arg5_salt_length, arg6_output, arg7_output_size, arg8_output_length);
+#if defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS)
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg2_input, arg3_input_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg4_salt, arg5_salt_length);
+    MBEDTLS_TEST_MEMORY_UNPOISON(arg6_output, arg7_output_size);
+#endif /* defined(MBEDTLS_PSA_COPY_CALLER_BUFFERS) */
     return status;
 }