diff --git a/include/psa/crypto.h b/include/psa/crypto.h
old mode 100644
new mode 100755
index f8b8cea..c0b3187
--- a/include/psa/crypto.h
+++ b/include/psa/crypto.h
@@ -162,6 +162,7 @@
 #define PSA_KEY_TYPE_DSA_KEYPAIR                ((psa_key_type_t)0x07020000)
 #define PSA_KEY_TYPE_ECC_PUBLIC_KEY_BASE        ((psa_key_type_t)0x06030000)
 #define PSA_KEY_TYPE_ECC_KEYPAIR_BASE           ((psa_key_type_t)0x07030000)
+#define PSA_KEY_TYPE_ECC_CURVE_NISTP256R1       ((psa_key_type_t)0x00000001)
 #define PSA_KEY_TYPE_ECC_CURVE_MASK             ((psa_key_type_t)0x0000ffff)
 #define PSA_KEY_TYPE_ECC_KEYPAIR(curve)         \
     (PSA_KEY_TYPE_ECC_KEYPAIR_BASE | (curve))
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
old mode 100644
new mode 100755
index 7e633a3..781e06f
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -281,6 +281,9 @@
         case MBEDTLS_ERR_XTEA_HW_ACCEL_FAILED:
             return( PSA_ERROR_HARDWARE_FAILURE );
 
+        case MBEDTLS_ERR_ECP_BAD_INPUT_DATA:
+            return( PSA_ERROR_INVALID_ARGUMENT );
+
         default:
             return( PSA_ERROR_UNKNOWN_ERROR );
     }
@@ -1278,9 +1281,59 @@
 #if defined(MBEDTLS_ECP_C)
     if( PSA_KEY_TYPE_IS_ECC( slot->type ) )
     {
-        // TODO
+        mbedtls_ecp_keypair *ecdsa = slot->data.ecp;
+        int ret;
+        const mbedtls_md_info_t *md_info;
+        mbedtls_md_type_t md_alg;
+        if( signature_size < PSA_ECDSA_SIGNATURE_SIZE( ecdsa->grp.pbits ) )
+            return( PSA_ERROR_BUFFER_TOO_SMALL );
+        md_info = mbedtls_md_info_from_psa( alg );
+        md_alg = mbedtls_md_get_type( md_info );
+        ret = mbedtls_ecdsa_write_signature( ecdsa, md_alg, hash, hash_length,
+            signature, signature_length, mbedtls_ctr_drbg_random,
+            &global_data.ctr_drbg );
+        return( mbedtls_to_psa_error( ret ) );
+    }
+    else
+#endif /* defined(MBEDTLS_ECP_C) */
+    {
         return( PSA_ERROR_NOT_SUPPORTED );
     }
+}
+
+psa_status_t psa_asymmetric_verify( psa_key_slot_t key,
+                                    psa_algorithm_t alg,
+                                    const uint8_t *hash,
+                                    size_t hash_length,
+                                    const uint8_t *salt,
+                                    size_t salt_length,
+                                    uint8_t *signature,
+                                    size_t signature_size )
+{
+    key_slot_t *slot;
+    (void) salt;
+    (void) salt_length;
+
+    if( key == 0 || key > MBEDTLS_PSA_KEY_SLOT_COUNT )
+        return( PSA_ERROR_INVALID_ARGUMENT );
+    slot = &global_data.key_slots[key];
+    if( slot->type == PSA_KEY_TYPE_NONE )
+        return( PSA_ERROR_EMPTY_SLOT );
+    if( ! PSA_KEY_TYPE_IS_KEYPAIR( slot->type ) )
+        return( PSA_ERROR_INVALID_ARGUMENT );
+    if( !( slot->policy.usage & PSA_KEY_USAGE_VERIFY ) )
+        return( PSA_ERROR_NOT_PERMITTED );
+
+#if defined(MBEDTLS_ECP_C)
+    if( PSA_KEY_TYPE_IS_ECC( slot->type ) )
+    {
+        mbedtls_ecp_keypair *ecdsa = slot->data.ecp;
+        int ret;
+        (void) alg;
+        ret = mbedtls_ecdsa_read_signature( ecdsa, hash, hash_length, signature,
+            signature_size );
+        return( mbedtls_to_psa_error( ret ) );
+    }
     else
 #endif /* defined(MBEDTLS_ECP_C) */
     {
diff --git a/tests/suites/test_suite_psa_crypto.data b/tests/suites/test_suite_psa_crypto.data
old mode 100644
new mode 100755
index 38f4b80..c3f5f90
--- a/tests/suites/test_suite_psa_crypto.data
+++ b/tests/suites/test_suite_psa_crypto.data
@@ -33,10 +33,10 @@
 depends_on:MBEDTLS_PK_C:MBEDTLS_PK_PARSE_C:MBEDTLS_RSA_C
 import_export:"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":PSA_KEY_TYPE_RSA_KEYPAIR:1023:0:PSA_SUCCESS:1
 
-#PSA import/export EC secp256r1: good
-#depends_on:MBEDTLS_PK_C:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
-#import_export:"3077020101042049c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eeea00a06082a8648ce3d030107a144034200047772656f814b399279d5e1f1781fac6f099a3c5ca1b0e35351834b08b65e0b572590cdaf8f769361bcf34acfc11e5e074e8426bdde04be6e653945449617de45":PSA_KEY_TYPE_ECC_NISTP256R1:256:0:PSA_SUCCESS:1
-#
+PSA import/export EC secp256r1: good
+depends_on:MBEDTLS_PK_C:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+import_export:"3077020101042049c9a8c18c4b885638c431cf1df1c994131609b580d4fd43a0cab17db2f13eeea00a06082a8648ce3d030107a144034200047772656f814b399279d5e1f1781fac6f099a3c5ca1b0e35351834b08b65e0b572590cdaf8f769361bcf34acfc11e5e074e8426bdde04be6e653945449617de45":PSA_KEY_TYPE_ECC_KEYPAIR(PSA_KEY_TYPE_ECC_CURVE_NISTP256R1):256:0:PSA_SUCCESS:1
+
 PSA hash finish: SHA-256
 depends_on:MBEDTLS_SHA256_C
 hash_finish:PSA_ALG_SHA_256:"bd":"68325720aabd7c82f30f554b313d0570c95accbb7dc4b5aae11204c08ffe732b"
@@ -78,6 +78,10 @@
 PSA sign RSA PKCS#1 v1.5 SHA-256
 sign_deterministic:PSA_KEY_TYPE_RSA_KEYPAIR:"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":PSA_ALG_RSA_PKCS1V15_SIGN(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad":"a73664d55b39c7ea6c1e5b5011724a11e1d7073d3a68f48c836fad153a1d91b6abdbc8f69da13b206cc96af6363b114458b026af14b24fab8929ed634c6a2acace0bcc62d9bb6a984afbcbfcd3a0608d32a2bae535b9cd1ecdf9dd281db1e0025c3bfb5512963ec3b98ddaa69e38bc3c84b1b61a04e5648640856aacc6fc7311"
 
+PSA sign ECDSA SECP256R1 SHA-256
+depends_on:MBEDTLS_PK_C:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECDSA_DETERMINISTIC
+sign_deterministic:PSA_KEY_TYPE_ECC_KEYPAIR(PSA_KEY_TYPE_ECC_CURVE_NISTP256R1):"3078020101042100ab45435712649cb30bbddac49197eebf2740ffc7f874d9244c3460f54f322d3aa00a06082a8648ce3d030107a14403420004dea5e45d0ea37fc566232a508f4ad20ea13d47e4bf5fa4d54a57a0ba012042087097496efc583fed8b24a5b9be9a51de063f5a00a8b698a16fd7f29b5485f320":PSA_ALG_SHA_256:"9ac4335b469bbd791439248504dd0d49c71349a295fee5a1c68507f45a9e1c7b":"304502206a3399f69421ffe1490377adf2ea1f117d81a63cf5bf22e918d51175eb259151022100ce95d7c26cc04e25503e2f7a1ec3573e3c2412534bb4a19b3a7811742f49f50f"
+
 PSA sign RSA PKCS#1 v1.5 SHA-256, wrong hash size
 sign_fail:PSA_KEY_TYPE_RSA_KEYPAIR:"3082025e02010002818100af057d396ee84fb75fdbb5c2b13c7fe5a654aa8aa2470b541ee1feb0b12d25c79711531249e1129628042dbbb6c120d1443524ef4c0e6e1d8956eeb2077af12349ddeee54483bc06c2c61948cd02b202e796aebd94d3a7cbf859c2c1819c324cb82b9cd34ede263a2abffe4733f077869e8660f7d6834da53d690ef7985f6bc3020301000102818100874bf0ffc2f2a71d14671ddd0171c954d7fdbf50281e4f6d99ea0e1ebcf82faa58e7b595ffb293d1abe17f110b37c48cc0f36c37e84d876621d327f64bbe08457d3ec4098ba2fa0a319fba411c2841ed7be83196a8cdf9daa5d00694bc335fc4c32217fe0488bce9cb7202e59468b1ead119000477db2ca797fac19eda3f58c1024100e2ab760841bb9d30a81d222de1eb7381d82214407f1b975cbbfe4e1a9467fd98adbd78f607836ca5be1928b9d160d97fd45c12d6b52e2c9871a174c66b488113024100c5ab27602159ae7d6f20c3c2ee851e46dc112e689e28d5fcbbf990a99ef8a90b8bb44fd36467e7fc1789ceb663abda338652c3c73f111774902e840565927091024100b6cdbd354f7df579a63b48b3643e353b84898777b48b15f94e0bfc0567a6ae5911d57ad6409cf7647bf96264e9bd87eb95e263b7110b9a1f9f94acced0fafa4d024071195eec37e8d257decfc672b07ae639f10cbb9b0c739d0c809968d644a94e3fd6ed9287077a14583f379058f76a8aecd43c62dc8c0f41766650d725275ac4a1024100bb32d133edc2e048d463388b7be9cb4be29f4b6250be603e70e3647501c97ddde20a4e71be95fd5e71784e25aca4baf25be5738aae59bbfe1c997781447a2b24":PSA_ALG_RSA_PKCS1V15_SIGN(PSA_ALG_SHA_256):"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015":128:PSA_ERROR_INVALID_ARGUMENT
 
@@ -104,3 +108,15 @@
 
 PSA Key Lifetime set fail, invalid key lifetime value
 key_lifetime_set_fail:1:PSA_KEY_LIFETIME_PERSISTENT+1:PSA_ERROR_INVALID_ARGUMENT
+
+PSA sign ECDSA SECP256R1 SHA-256, output buffer too small
+depends_on:MBEDTLS_PK_C:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+sign_fail:PSA_KEY_TYPE_ECC_KEYPAIR(PSA_KEY_TYPE_ECC_CURVE_NISTP256R1):"3078020101042100ab45435712649cb30bbddac49197eebf2740ffc7f874d9244c3460f54f322d3aa00a06082a8648ce3d030107a14403420004dea5e45d0ea37fc566232a508f4ad20ea13d47e4bf5fa4d54a57a0ba012042087097496efc583fed8b24a5b9be9a51de063f5a00a8b698a16fd7f29b5485f320":PSA_ALG_SHA_256:"9ac4335b469bbd791439248504dd0d49c71349a295fee5a1c68507f45a9e1c7b":10:PSA_ERROR_BUFFER_TOO_SMALL
+
+PSA sign ECDSA SECP256R1, invalid md alg
+depends_on:MBEDTLS_PK_C:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECDSA_DETERMINISTIC
+sign_fail:PSA_KEY_TYPE_ECC_KEYPAIR(PSA_KEY_TYPE_ECC_CURVE_NISTP256R1):"3078020101042100ab45435712649cb30bbddac49197eebf2740ffc7f874d9244c3460f54f322d3aa00a06082a8648ce3d030107a14403420004dea5e45d0ea37fc566232a508f4ad20ea13d47e4bf5fa4d54a57a0ba012042087097496efc583fed8b24a5b9be9a51de063f5a00a8b698a16fd7f29b5485f320":0:"9ac4335b469bbd791439248504dd0d49c71349a295fee5a1c68507f45a9e1c7b":72:PSA_ERROR_INVALID_ARGUMENT
+
+PSA verify ECDSA SECP256R1 SHA-256
+depends_on:MBEDTLS_PK_C:MBEDTLS_PK_PARSE_C:MBEDTLS_ECP_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED
+asymmetric_verify:PSA_KEY_TYPE_ECC_KEYPAIR(PSA_KEY_TYPE_ECC_CURVE_NISTP256R1):"3078020101042100ab45435712649cb30bbddac49197eebf2740ffc7f874d9244c3460f54f322d3aa00a06082a8648ce3d030107a14403420004dea5e45d0ea37fc566232a508f4ad20ea13d47e4bf5fa4d54a57a0ba012042087097496efc583fed8b24a5b9be9a51de063f5a00a8b698a16fd7f29b5485f320":PSA_ALG_SHA_256:"9ac4335b469bbd791439248504dd0d49c71349a295fee5a1c68507f45a9e1c7b":"304502206a3399f69421ffe1490377adf2ea1f117d81a63cf5bf22e918d51175eb259151022100ce95d7c26cc04e25503e2f7a1ec3573e3c2412534bb4a19b3a7811742f49f50f"
diff --git a/tests/suites/test_suite_psa_crypto.function b/tests/suites/test_suite_psa_crypto.function
old mode 100644
new mode 100755
index de388db..04a95d4
--- a/tests/suites/test_suite_psa_crypto.function
+++ b/tests/suites/test_suite_psa_crypto.function
@@ -526,3 +526,50 @@
     mbedtls_psa_crypto_free( );
 }
 /* END_CASE */
+
+/* BEGIN_CASE */
+void asymmetric_verify( int key_type_arg, char *key_hex,
+                         int alg_arg, char *hash_hex, char *signature_hex )
+{
+    int slot = 1;
+    psa_key_type_t key_type = key_type_arg;
+    psa_algorithm_t alg = alg_arg;
+    unsigned char *key_data = NULL;
+    size_t key_size;
+    unsigned char *hash_data = NULL;
+    size_t hash_size;
+    unsigned char *signature_data = NULL;
+    size_t signature_size;
+    psa_key_policy_t policy = {0};
+
+    key_data = unhexify_alloc( key_hex, &key_size );
+    TEST_ASSERT( key_data != NULL );
+    hash_data = unhexify_alloc( hash_hex, &hash_size );
+    TEST_ASSERT( hash_data != NULL );
+    signature_data = unhexify_alloc( signature_hex, &signature_size );
+    TEST_ASSERT( signature_data != NULL );
+
+    TEST_ASSERT( psa_crypto_init( ) == PSA_SUCCESS );
+
+    psa_key_policy_init( &policy );
+
+    psa_key_policy_set_usage( &policy, PSA_KEY_USAGE_VERIFY, alg_arg );
+
+    TEST_ASSERT( psa_set_key_policy( slot, &policy ) == PSA_SUCCESS );
+
+    TEST_ASSERT( psa_import_key( slot, key_type,
+                                 key_data, key_size ) == PSA_SUCCESS );
+
+    TEST_ASSERT( psa_asymmetric_verify( slot, alg,
+                                        hash_data, hash_size,
+                                        NULL, 0,
+                                        signature_data, signature_size ) ==
+                                        PSA_SUCCESS );
+exit:
+    psa_destroy_key( slot );
+    mbedtls_free( key_data );
+    mbedtls_free( hash_data );
+    mbedtls_free( signature_data );
+    mbedtls_psa_crypto_free( );
+}
+/* END_CASE */