diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index 645fe2a..12f7e7c 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -2544,23 +2544,35 @@
 
 PSA Multipart AEAD verify, AES - GCM, invalid signature
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
-aead_multipart_verify:PSA_KEY_TYPE_AES:"fe96eab10ff48c7942025422583d0377":PSA_ALG_GCM:"97ce3f848276783599c6875de324361e":"127628b6dcbce6fc8a8ef60798eb67b2088415635119697d20bb878c24d9c6f9c29e148521cb5e0feff892c7855d4f1c0bfb32ad33420976714dce87a0bbc18e4378bd1ef35197d0ca73051148f1199010f63caf122df5f71ad8d9c71df3eb2fbe3b2529d0ba657570358d3776f687bdb9c96d5e0e9e00c4b42d5d7a268d6a08":"12195120056ca3cac70d583603a476821bac6c57c9733b81cfb83538dc9e850f8bdf46065069591c23ebcbc6d1e2523375fb7efc80c09507fa25477ed07cee54fc4eb90168b3ef988f651fc40652474a644b1b311decf899660aef2347bb081af48950f06ebf799911e37120de94c55c20e5f0a77119be06e2b6e557f872fa0f":"6bac793bdc2190a195122c98544ccf56":PSA_ERROR_INVALID_SIGNATURE
+aead_multipart_verify:PSA_KEY_TYPE_AES:"fe96eab10ff48c7942025422583d0377":PSA_ALG_GCM:"97ce3f848276783599c6875de324361e":"127628b6dcbce6fc8a8ef60798eb67b2088415635119697d20bb878c24d9c6f9c29e148521cb5e0feff892c7855d4f1c0bfb32ad33420976714dce87a0bbc18e4378bd1ef35197d0ca73051148f1199010f63caf122df5f71ad8d9c71df3eb2fbe3b2529d0ba657570358d3776f687bdb9c96d5e0e9e00c4b42d5d7a268d6a08":"12195120056ca3cac70d583603a476821bac6c57c9733b81cfb83538dc9e850f8bdf46065069591c23ebcbc6d1e2523375fb7efc80c09507fa25477ed07cee54fc4eb90168b3ef988f651fc40652474a644b1b311decf899660aef2347bb081af48950f06ebf799911e37120de94c55c20e5f0a77119be06e2b6e557f872fa0f":"6bac793bdc2190a195122c98544ccf56":1:PSA_ERROR_INVALID_SIGNATURE
 
 PSA Multipart AEAD verify, AES - GCM, T = 15 but passing 16 bytes
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
-aead_multipart_verify:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,15):"00e440846db73a490573deaf3728c94f":"a3cfcb832e935eb5bc3812583b3a1b2e82920c07fda3668a35d939d8f11379bb606d39e6416b2ef336fffb15aec3f47a71e191f4ff6c56ff15913562619765b26ae094713d60bab6ab82bfc36edaaf8c7ce2cf5906554dcc5933acdb9cb42c1d24718efdc4a09256020b024b224cfe602772bd688c6c8f1041a46f7ec7d51208":"3b6de52f6e582d317f904ee768895bd4d0790912efcf27b58651d0eb7eb0b2f07222c6ffe9f7e127d98ccb132025b098a67dc0ec0083235e9f83af1ae1297df4319547cbcb745cebed36abc1f32a059a05ede6c00e0da097521ead901ad6a73be20018bda4c323faa135169e21581e5106ac20853642e9d6b17f1dd925c87281":"4365847fe0b7b7fbed325953df344a96":PSA_ERROR_INVALID_SIGNATURE
+aead_multipart_verify:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,15):"00e440846db73a490573deaf3728c94f":"a3cfcb832e935eb5bc3812583b3a1b2e82920c07fda3668a35d939d8f11379bb606d39e6416b2ef336fffb15aec3f47a71e191f4ff6c56ff15913562619765b26ae094713d60bab6ab82bfc36edaaf8c7ce2cf5906554dcc5933acdb9cb42c1d24718efdc4a09256020b024b224cfe602772bd688c6c8f1041a46f7ec7d51208":"3b6de52f6e582d317f904ee768895bd4d0790912efcf27b58651d0eb7eb0b2f07222c6ffe9f7e127d98ccb132025b098a67dc0ec0083235e9f83af1ae1297df4319547cbcb745cebed36abc1f32a059a05ede6c00e0da097521ead901ad6a73be20018bda4c323faa135169e21581e5106ac20853642e9d6b17f1dd925c87281":"4365847fe0b7b7fbed325953df344a96":1:PSA_ERROR_INVALID_SIGNATURE
+
+PSA Multipart AEAD verify, AES - GCM, T = 15 but passing 14 bytes
+depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,15):"00e440846db73a490573deaf3728c94f":"a3cfcb832e935eb5bc3812583b3a1b2e82920c07fda3668a35d939d8f11379bb606d39e6416b2ef336fffb15aec3f47a71e191f4ff6c56ff15913562619765b26ae094713d60bab6ab82bfc36edaaf8c7ce2cf5906554dcc5933acdb9cb42c1d24718efdc4a09256020b024b224cfe602772bd688c6c8f1041a46f7ec7d51208":"3b6de52f6e582d317f904ee768895bd4d0790912efcf27b58651d0eb7eb0b2f07222c6ffe9f7e127d98ccb132025b098a67dc0ec0083235e9f83af1ae1297df4319547cbcb745cebed36abc1f32a059a05ede6c00e0da097521ead901ad6a73be20018bda4c323faa135169e21581e5106ac20853642e9d6b17f1dd925c87281":"4365847fe0b7b7fbed325953df34":1:PSA_ERROR_INVALID_SIGNATURE
+
+PSA Multipart AEAD verify, AES - GCM, T = 15 but passing 0 bytes (valid buffer)
+depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,15):"00e440846db73a490573deaf3728c94f":"a3cfcb832e935eb5bc3812583b3a1b2e82920c07fda3668a35d939d8f11379bb606d39e6416b2ef336fffb15aec3f47a71e191f4ff6c56ff15913562619765b26ae094713d60bab6ab82bfc36edaaf8c7ce2cf5906554dcc5933acdb9cb42c1d24718efdc4a09256020b024b224cfe602772bd688c6c8f1041a46f7ec7d51208":"3b6de52f6e582d317f904ee768895bd4d0790912efcf27b58651d0eb7eb0b2f07222c6ffe9f7e127d98ccb132025b098a67dc0ec0083235e9f83af1ae1297df4319547cbcb745cebed36abc1f32a059a05ede6c00e0da097521ead901ad6a73be20018bda4c323faa135169e21581e5106ac20853642e9d6b17f1dd925c87281":"":1:PSA_ERROR_INVALID_SIGNATURE
+
+PSA Multipart AEAD verify, AES - GCM, T = 15 but passing 0 bytes (NULL buffer)
+depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
+aead_multipart_verify:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,15):"00e440846db73a490573deaf3728c94f":"a3cfcb832e935eb5bc3812583b3a1b2e82920c07fda3668a35d939d8f11379bb606d39e6416b2ef336fffb15aec3f47a71e191f4ff6c56ff15913562619765b26ae094713d60bab6ab82bfc36edaaf8c7ce2cf5906554dcc5933acdb9cb42c1d24718efdc4a09256020b024b224cfe602772bd688c6c8f1041a46f7ec7d51208":"3b6de52f6e582d317f904ee768895bd4d0790912efcf27b58651d0eb7eb0b2f07222c6ffe9f7e127d98ccb132025b098a67dc0ec0083235e9f83af1ae1297df4319547cbcb745cebed36abc1f32a059a05ede6c00e0da097521ead901ad6a73be20018bda4c323faa135169e21581e5106ac20853642e9d6b17f1dd925c87281":"":0:PSA_ERROR_INVALID_SIGNATURE
 
 PSA Multipart AEAD verify: AES - GCM, invalid tag length 0
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
-aead_multipart_verify:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,0):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":"":PSA_ERROR_INVALID_ARGUMENT
+aead_multipart_verify:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,0):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd10b6":"":1:PSA_ERROR_INVALID_ARGUMENT
 
 PSA Multipart AEAD verify: AES - GCM, invalid tag length 2
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
-aead_multipart_verify:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,2):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd":"10b6":PSA_ERROR_INVALID_ARGUMENT
+aead_multipart_verify:PSA_KEY_TYPE_AES:"a0ec7b0052541d9e9c091fb7fc481409":PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM,2):"48c0906930561e0ab0ef4cd972":"40a27c1d1e23ea3dbe8056b2774861a4a201cce49f19997d19206d8c8a343951":"26c56961c035a7e452cce61bc6ee220d77b3f94d18fd":"10b6":1:PSA_ERROR_INVALID_ARGUMENT
 
 PSA Multipart AEAD verify: ChaCha20 - Poly1305 (RFC7539, bad tag)
 depends_on:PSA_WANT_ALG_CHACHA20_POLY1305:PSA_WANT_KEY_TYPE_CHACHA20
-aead_multipart_verify:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:"070000004041424344454647":"50515253c0c1c2c3c4c5c6c7":"d31a8d34648e60db7b86afbc53ef7ec2a4aded51296e08fea9e2b5a736ee62d63dbea45e8ca9671282fafb69da92728b1a71de0a9e060b2905d6a5b67ecd3b3692ddbd7f2d778b8c9803aee328091b58fab324e4fad675945585808b4831d7bc3ff4def08e4b7a9de576d26586cec64b6116":"1ae10b594f09e26a7e902ecbd0600690":PSA_ERROR_INVALID_SIGNATURE
+aead_multipart_verify:PSA_KEY_TYPE_CHACHA20:"808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f":PSA_ALG_CHACHA20_POLY1305:"070000004041424344454647":"50515253c0c1c2c3c4c5c6c7":"d31a8d34648e60db7b86afbc53ef7ec2a4aded51296e08fea9e2b5a736ee62d63dbea45e8ca9671282fafb69da92728b1a71de0a9e060b2905d6a5b67ecd3b3692ddbd7f2d778b8c9803aee328091b58fab324e4fad675945585808b4831d7bc3ff4def08e4b7a9de576d26586cec64b6116":"1ae10b594f09e26a7e902ecbd0600690":1:PSA_ERROR_INVALID_SIGNATURE
 
 PSA Multipart Nonce Generation, AES - GCM, NONCE = (Req 12 / Expect 12)
 depends_on:PSA_WANT_ALG_GCM:PSA_WANT_KEY_TYPE_AES
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index f25872d..29cda92 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -271,6 +271,12 @@
     SET_LENGTHS_AFTER_NONCE = 2
 } setlengths_method;
 
+typedef enum
+{
+    USE_NULL_TAG = 0,
+    USE_GIVEN_TAG = 1,
+} tagusage_method;
+
 /*!
  * \brief                           Internal Function for AEAD multipart tests.
  *
@@ -4071,6 +4077,7 @@
                             data_t *additional_data,
                             data_t *input_data,
                             data_t *tag,
+                            int tag_usage_arg,
                             int expected_status_arg )
 {
     mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT;
@@ -4085,6 +4092,9 @@
     size_t plaintext_size = 0;
     size_t plaintext_length = 0;
     size_t verify_plaintext_size = 0;
+    tagusage_method tag_usage = tag_usage_arg;
+    unsigned char *tag_buffer = NULL;
+    size_t tag_size = 0;
 
     PSA_ASSERT( psa_crypto_init( ) );
 
@@ -4131,10 +4141,16 @@
                                  plaintext, plaintext_size,
                                  &plaintext_length ) );
 
+    if( tag_usage == USE_GIVEN_TAG )
+    {
+        tag_buffer = tag->x;
+        tag_size = tag->len;
+    }
+
     status = psa_aead_verify( &operation, finish_plaintext,
                               verify_plaintext_size,
                               &plaintext_length,
-                              tag->x, tag->len );
+                              tag_buffer, tag_size );
 
     TEST_EQUAL( status, expected_status );
 
@@ -4147,7 +4163,6 @@
 }
 /* END_CASE */
 
-
 /* BEGIN_CASE */
 void aead_multipart_state_test( int key_type_arg, data_t *key_data,
                                 int alg_arg,