diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
index 374d3035a..6b1c38eee 100644
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -1565,9 +1565,21 @@ PSA key agreement: ECDH SECP256R1 (RFC 5903), raw: capacity=32
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECDH_C
 key_agreement_capacity:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP256R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":"3059301306072a8648ce3d020106082a8648ce3d03010703420004d12dfb5289c8d4f81208b70270398c342296970a0bccb74c736fc7554494bf6356fbf3ca366cc23e8157854c13c58d6aac23f046ada30f8353e74f33039872ab":32
 
-PSA key agreement: ECDH SECP256R1 (RFC 5903), raw: read
+PSA key agreement: ECDH SECP256R1 (RFC 5903), raw: read 32 (full)
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECDH_C
-key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP256R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":"3059301306072a8648ce3d020106082a8648ce3d03010703420004d12dfb5289c8d4f81208b70270398c342296970a0bccb74c736fc7554494bf6356fbf3ca366cc23e8157854c13c58d6aac23f046ada30f8353e74f33039872ab":"d6840f6b42f6edafd13116e0e12565202fef8e9ece7dce03812464d04b9442de"
+key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP256R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":"3059301306072a8648ce3d020106082a8648ce3d03010703420004d12dfb5289c8d4f81208b70270398c342296970a0bccb74c736fc7554494bf6356fbf3ca366cc23e8157854c13c58d6aac23f046ada30f8353e74f33039872ab":"d6840f6b42f6edafd13116e0e12565202fef8e9ece7dce03812464d04b9442de":""
+
+PSA key agreement: ECDH SECP256R1 (RFC 5903), raw: read 0+32
+depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECDH_C
+key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP256R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":"3059301306072a8648ce3d020106082a8648ce3d03010703420004d12dfb5289c8d4f81208b70270398c342296970a0bccb74c736fc7554494bf6356fbf3ca366cc23e8157854c13c58d6aac23f046ada30f8353e74f33039872ab":"":"d6840f6b42f6edafd13116e0e12565202fef8e9ece7dce03812464d04b9442de"
+
+PSA key agreement: ECDH SECP256R1 (RFC 5903), raw: read 20+12
+depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECDH_C
+key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP256R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":"3059301306072a8648ce3d020106082a8648ce3d03010703420004d12dfb5289c8d4f81208b70270398c342296970a0bccb74c736fc7554494bf6356fbf3ca366cc23e8157854c13c58d6aac23f046ada30f8353e74f33039872ab":"d6840f6b42f6edafd13116e0e12565202fef8e9e":"ce7dce03812464d04b9442de"
+
+PSA key agreement: ECDH SECP256R1 (RFC 5903), raw: read 7+15
+depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECDH_C
+key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP256R1):"c88f01f510d9ac3f70a292daa2316de544e9aab8afe84049c62a9c57862d1433":"3059301306072a8648ce3d020106082a8648ce3d03010703420004d12dfb5289c8d4f81208b70270398c342296970a0bccb74c736fc7554494bf6356fbf3ca366cc23e8157854c13c58d6aac23f046ada30f8353e74f33039872ab":"d6840f6b42f6ed":"afd13116e0e12565202fef8e9ece7d"
 
 PSA key agreement: ECDH SECP384R1 (RFC 5903), raw: capacity=48
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP384R1_ENABLED:MBEDTLS_ECDH_C
@@ -1575,7 +1587,7 @@ key_agreement_capacity:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR
 
 PSA key agreement: ECDH SECP384R1 (RFC 5903), raw: read
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP384R1_ENABLED:MBEDTLS_ECDH_C
-key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP384R1):"099f3c7034d4a2c699884d73a375a67f7624ef7c6b3c0f160647b67414dce655e35b538041e649ee3faef896783ab194":"3076301006072a8648ce3d020106052b8104002203620004e558dbef53eecde3d3fccfc1aea08a89a987475d12fd950d83cfa41732bc509d0d1ac43a0336def96fda41d0774a3571dcfbec7aacf3196472169e838430367f66eebe3c6e70c416dd5f0c68759dd1fff83fa40142209dff5eaad96db9e6386c":"11187331c279962d93d604243fd592cb9d0a926f422e47187521287e7156c5c4d603135569b9e9d09cf5d4a270f59746"
+key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP384R1):"099f3c7034d4a2c699884d73a375a67f7624ef7c6b3c0f160647b67414dce655e35b538041e649ee3faef896783ab194":"3076301006072a8648ce3d020106052b8104002203620004e558dbef53eecde3d3fccfc1aea08a89a987475d12fd950d83cfa41732bc509d0d1ac43a0336def96fda41d0774a3571dcfbec7aacf3196472169e838430367f66eebe3c6e70c416dd5f0c68759dd1fff83fa40142209dff5eaad96db9e6386c":"11187331c279962d93d604243fd592cb9d0a926f422e47187521287e7156c5c4d603135569b9e9d09cf5d4a270f59746":""
 
 PSA key agreement: ECDH SECP521R1 (RFC 5903), raw: capacity=66
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP521R1_ENABLED:MBEDTLS_ECDH_C
@@ -1583,7 +1595,7 @@ key_agreement_capacity:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR
 
 PSA key agreement: ECDH SECP521R1 (RFC 5903), raw: read
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP521R1_ENABLED:MBEDTLS_ECDH_C
-key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP521R1):"0037ade9319a89f4dabdb3ef411aaccca5123c61acab57b5393dce47608172a095aa85a30fe1c2952c6771d937ba9777f5957b2639bab072462f68c27a57382d4a52":"30819b301006072a8648ce3d020106052b81040023038186000400d0b3975ac4b799f5bea16d5e13e9af971d5e9b984c9f39728b5e5739735a219b97c356436adc6e95bb0352f6be64a6c2912d4ef2d0433ced2b6171640012d9460f015c68226383956e3bd066e797b623c27ce0eac2f551a10c2c724d9852077b87220b6536c5c408a1d2aebb8e86d678ae49cb57091f4732296579ab44fcd17f0fc56a":"01144c7d79ae6956bc8edb8e7c787c4521cb086fa64407f97894e5e6b2d79b04d1427e73ca4baa240a34786859810c06b3c715a3a8cc3151f2bee417996d19f3ddea"
+key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_SECP521R1):"0037ade9319a89f4dabdb3ef411aaccca5123c61acab57b5393dce47608172a095aa85a30fe1c2952c6771d937ba9777f5957b2639bab072462f68c27a57382d4a52":"30819b301006072a8648ce3d020106052b81040023038186000400d0b3975ac4b799f5bea16d5e13e9af971d5e9b984c9f39728b5e5739735a219b97c356436adc6e95bb0352f6be64a6c2912d4ef2d0433ced2b6171640012d9460f015c68226383956e3bd066e797b623c27ce0eac2f551a10c2c724d9852077b87220b6536c5c408a1d2aebb8e86d678ae49cb57091f4732296579ab44fcd17f0fc56a":"01144c7d79ae6956bc8edb8e7c787c4521cb086fa64407f97894e5e6b2d79b04d1427e73ca4baa240a34786859810c06b3c715a3a8cc3151f2bee417996d19f3ddea":""
 
 PSA key agreement: ECDH brainpoolP256r1 (RFC 7027), raw: capacity=32
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_BP256R1_ENABLED:MBEDTLS_ECDH_C
@@ -1591,7 +1603,7 @@ key_agreement_capacity:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR
 
 PSA key agreement: ECDH brainpoolP256r1 (RFC 7027), raw: read
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_BP256R1_ENABLED:MBEDTLS_ECDH_C
-key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_BRAINPOOL_P256R1):"81db1ee100150ff2ea338d708271be38300cb54241d79950f77b063039804f1d":"305a301406072a8648ce3d020106092b2403030208010107034200048d2d688c6cf93e1160ad04cc4429117dc2c41825e1e9fca0addd34e6f1b39f7b990c57520812be512641e47034832106bc7d3e8dd0e4c7f1136d7006547cec6a":"89afc39d41d3b327814b80940b042590f96556ec91e6ae7939bce31f3a18bf2b"
+key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_BRAINPOOL_P256R1):"81db1ee100150ff2ea338d708271be38300cb54241d79950f77b063039804f1d":"305a301406072a8648ce3d020106092b2403030208010107034200048d2d688c6cf93e1160ad04cc4429117dc2c41825e1e9fca0addd34e6f1b39f7b990c57520812be512641e47034832106bc7d3e8dd0e4c7f1136d7006547cec6a":"89afc39d41d3b327814b80940b042590f96556ec91e6ae7939bce31f3a18bf2b":""
 
 PSA key agreement: ECDH brainpoolP384r1 (RFC 7027), raw: capacity=48
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_BP384R1_ENABLED:MBEDTLS_ECDH_C
@@ -1599,7 +1611,7 @@ key_agreement_capacity:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR
 
 PSA key agreement: ECDH brainpoolP384r1 (RFC 7027), raw: read
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_BP384R1_ENABLED:MBEDTLS_ECDH_C
-key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_BRAINPOOL_P384R1):"1e20f5e048a5886f1f157c74e91bde2b98c8b52d58e5003d57053fc4b0bd65d6f15eb5d1ee1610df870795143627d042":"307a301406072a8648ce3d020106092b240303020801010b036200044d44326f269a597a5b58bba565da5556ed7fd9a8a9eb76c25f46db69d19dc8ce6ad18e404b15738b2086df37e71d1eb462d692136de56cbe93bf5fa3188ef58bc8a3a0ec6c1e151a21038a42e9185329b5b275903d192f8d4e1f32fe9cc78c48":"0bd9d3a7ea0b3d519d09d8e48d0785fb744a6b355e6304bc51c229fbbce239bbadf6403715c35d4fb2a5444f575d4f42"
+key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_BRAINPOOL_P384R1):"1e20f5e048a5886f1f157c74e91bde2b98c8b52d58e5003d57053fc4b0bd65d6f15eb5d1ee1610df870795143627d042":"307a301406072a8648ce3d020106092b240303020801010b036200044d44326f269a597a5b58bba565da5556ed7fd9a8a9eb76c25f46db69d19dc8ce6ad18e404b15738b2086df37e71d1eb462d692136de56cbe93bf5fa3188ef58bc8a3a0ec6c1e151a21038a42e9185329b5b275903d192f8d4e1f32fe9cc78c48":"0bd9d3a7ea0b3d519d09d8e48d0785fb744a6b355e6304bc51c229fbbce239bbadf6403715c35d4fb2a5444f575d4f42":""
 
 PSA key agreement: ECDH brainpoolP512r1 (RFC 7027), raw: capacity=64
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_BP512R1_ENABLED:MBEDTLS_ECDH_C
@@ -1607,7 +1619,7 @@ key_agreement_capacity:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR
 
 PSA key agreement: ECDH brainpoolP512r1 (RFC 7027), raw: read
 depends_on:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_BP512R1_ENABLED:MBEDTLS_ECDH_C
-key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_BRAINPOOL_P512R1):"16302ff0dbbb5a8d733dab7141c1b45acbc8715939677f6a56850a38bd87bd59b09e80279609ff333eb9d4c061231fb26f92eeb04982a5f1d1764cad57665422":"30819b301406072a8648ce3d020106092b240303020801010d03818200049d45f66de5d67e2e6db6e93a59ce0bb48106097ff78a081de781cdb31fce8ccbaaea8dd4320c4119f1e9cd437a2eab3731fa9668ab268d871deda55a5473199f2fdc313095bcdd5fb3a91636f07a959c8e86b5636a1e930e8396049cb481961d365cc11453a06c719835475b12cb52fc3c383bce35e27ef194512b71876285fa":"a7927098655f1f9976fa50a9d566865dc530331846381c87256baf3226244b76d36403c024d7bbf0aa0803eaff405d3d24f11a9b5c0bef679fe1454b21c4cd1f"
+key_agreement_output:PSA_ALG_ECDH(PSA_ALG_SELECT_RAW):PSA_KEY_TYPE_ECC_KEYPAIR(PSA_ECC_CURVE_BRAINPOOL_P512R1):"16302ff0dbbb5a8d733dab7141c1b45acbc8715939677f6a56850a38bd87bd59b09e80279609ff333eb9d4c061231fb26f92eeb04982a5f1d1764cad57665422":"30819b301406072a8648ce3d020106092b240303020801010d03818200049d45f66de5d67e2e6db6e93a59ce0bb48106097ff78a081de781cdb31fce8ccbaaea8dd4320c4119f1e9cd437a2eab3731fa9668ab268d871deda55a5473199f2fdc313095bcdd5fb3a91636f07a959c8e86b5636a1e930e8396049cb481961d365cc11453a06c719835475b12cb52fc3c383bce35e27ef194512b71876285fa":"a7927098655f1f9976fa50a9d566865dc530331846381c87256baf3226244b76d36403c024d7bbf0aa0803eaff405d3d24f11a9b5c0bef679fe1454b21c4cd1f":""
 
 PSA generate random: 0 bytes
 generate_random:0
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
index a0f038107..bcd07c15f 100644
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -3867,16 +3867,17 @@ exit:
 void key_agreement_output( int alg_arg,
                            int our_key_type_arg, data_t *our_key_data,
                            data_t *peer_key_data,
-                           data_t *expected_output )
+                           data_t *expected_output1, data_t *expected_output2 )
 {
     psa_key_slot_t our_key = 1;
     psa_algorithm_t alg = alg_arg;
     psa_key_type_t our_key_type = our_key_type_arg;
     psa_crypto_generator_t generator = PSA_CRYPTO_GENERATOR_INIT;
     psa_key_policy_t policy;
-    uint8_t *actual_output = mbedtls_calloc( 1, expected_output->len );
+    uint8_t *actual_output = NULL;
 
-    TEST_ASSERT( actual_output != NULL );
+    ASSERT_ALLOC( actual_output, MAX( expected_output1->len,
+                                      expected_output2->len ) );
 
     TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
 
@@ -3892,11 +3893,21 @@ void key_agreement_output( int alg_arg,
                                     peer_key_data->x, peer_key_data->len,
                                     alg ) == PSA_SUCCESS );
 
-    TEST_ASSERT( psa_generator_read( &generator,
-                                     actual_output,
-                                     expected_output->len ) == PSA_SUCCESS );
-    TEST_ASSERT( memcmp( actual_output, expected_output->x,
-                         expected_output->len ) == 0 );
+    TEST_ASSERT(
+        psa_generator_read( &generator,
+                            actual_output,
+                            expected_output1->len ) == PSA_SUCCESS );
+    TEST_ASSERT( memcmp( actual_output, expected_output1->x,
+                         expected_output1->len ) == 0 );
+    if( expected_output2->len != 0 )
+    {
+        TEST_ASSERT(
+            psa_generator_read( &generator,
+                                actual_output,
+                                expected_output2->len ) == PSA_SUCCESS );
+        TEST_ASSERT( memcmp( actual_output, expected_output2->x,
+                             expected_output2->len ) == 0 );
+    }
 
 exit:
     psa_generator_abort( &generator );