diff --git a/tests/suites/test_suite_ecdsa.data b/tests/suites/test_suite_ecdsa.data
index 755a43c..f99f3b7 100644
--- a/tests/suites/test_suite_ecdsa.data
+++ b/tests/suites/test_suite_ecdsa.data
@@ -364,3 +364,63 @@
 ECDSA private parameter greater than n p521
 depends_on:MBEDTLS_ECP_DP_SECP521R1_ENABLED
 ecdsa_prim_test_vectors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
+
+ECDSA verify invalid public key, zero bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"1":"2":"1":"1":0:0:MBEDTLS_ERR_ECP_INVALID_KEY
+
+ECDSA verify invalid public key, one byte of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"1":"2":"1":"1":1:0:MBEDTLS_ERR_ECP_INVALID_KEY
+
+ECDSA verify invalid public key, 32 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"1":"2":"1":"1":32:0:MBEDTLS_ERR_ECP_INVALID_KEY
+
+ECDSA verify invalid public key, 32 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"1":"12345":"1":"1":32:0:MBEDTLS_ERR_ECP_INVALID_KEY
+
+ECDSA verify invalid public key, 32 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"1":"2":"12345":"1":32:0:MBEDTLS_ERR_ECP_INVALID_KEY
+
+ECDSA verify invalid public key, 32 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"1":"2":"1":"12345":32:0:MBEDTLS_ERR_ECP_INVALID_KEY
+
+ECDSA verify valid public key, invalid signature, 0 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798":"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8":"0":"1":0:1:MBEDTLS_ERR_ECP_VERIFY_FAILED
+
+ECDSA verify valid public key, invalid signature, 1 byte of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798":"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8":"0":"1":1:1:MBEDTLS_ERR_ECP_VERIFY_FAILED
+
+ECDSA verify valid public key, invalid signature, 32 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798":"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8":"FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141":"12":32:1:MBEDTLS_ERR_ECP_VERIFY_FAILED
+
+ECDSA verify valid public key, valid/incorrect signature, 0 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798":"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8":"ed3bace23c5e17652e174c835fb72bf53ee306b3406a26890221b4cef7500f88":"84eead3fb3cdbdac882412af64cc125b6784690bebf575f1c32162ab65080037":0:1:MBEDTLS_ERR_ECP_VERIFY_FAILED
+
+ECDSA verify valid public key, valid/incorrect signature, 1 byte of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798":"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8":"ed3bace23c5e17652e174c835fb72bf53ee306b3406a26890221b4cef7500f88":"84eead3fb3cdbdac882412af64cc125b6784690bebf575f1c32162ab65080037":1:1:MBEDTLS_ERR_ECP_VERIFY_FAILED
+
+ECDSA verify valid public key, valid/incorrect signature, 32 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798":"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8":"ed3bace23c5e17652e174c835fb72bf53ee306b3406a26890221b4cef7500f88":"84eead3fb3cdbdac882412af64cc125b6784690bebf575f1c32162ab65080037":32:1:MBEDTLS_ERR_ECP_VERIFY_FAILED
+
+ECDSA verify valid public key, correct signature, 0 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798":"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8":"ed3bace23c5e17652e174c835fb72bf53ee306b3406a26890221b4cef7500f88":"c9cc1ba95156bc103055a5d7946f3a3ae7f0657d1e53f1d5c2c9782950aa69b":0:1:0
+
+ECDSA verify valid public key, correct signature, 1 byte of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798":"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8":"ed3bace23c5e17652e174c835fb72bf53ee306b3406a26890221b4cef7500f88":"c9cc1ba95156bc103055a5d7946f3a3ae7f0657d1e53f1d5c2c9782950aa69b":1:1:0
+
+ECDSA verify valid public key, correct signature, 32 bytes of data
+depends_on:MBEDTLS_ECP_DP_SECP256K1_ENABLED
+ecdsa_verify:MBEDTLS_ECP_DP_SECP256K1:"79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798":"483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8":"ed3bace23c5e17652e174c835fb72bf53ee306b3406a26890221b4cef7500f88":"c9cc1ba95156bc103055a5d7946f3a3ae7f0657d1e53f1d5c2c9782950aa69b":32:1:0
\ No newline at end of file
diff --git a/tests/suites/test_suite_ecdsa.function b/tests/suites/test_suite_ecdsa.function
index 549373a..0862f54 100644
--- a/tests/suites/test_suite_ecdsa.function
+++ b/tests/suites/test_suite_ecdsa.function
@@ -675,3 +675,68 @@
     mbedtls_ecdsa_free( &ctx );
 }
 /* END_CASE */
+
+/* BEGIN_CASE */
+void ecdsa_verify( int grp_id, char * x, char * y, char * r, char * s, int len, int key_is_valid, int expected )
+{
+    uint8_t FUZZ_DATA[] = {
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 32, 136, 251, 46, 240, 45, 45, 27, 62, 60, 0, 0, 0, 32, 32, 32, 32, 124, 102, 235, 242, 220, 21, 68, 255, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 121, 1, 0, 0, 0, 91, 1, 0, 0, 0, 151, 1, 0, 0, 0, 32, 32, 255, 32, 32, 150, 14, 240, 249, 163, 174, 190, 100, 0, 0, 0, 0, 32, 32, 32, 32, 51, 48, 79, 125, 229, 21, 223, 118, 32, 32, 32, 32, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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+    };
+
+    mbedtls_ecdsa_context ctx;
+    mbedtls_mpi sig_r, sig_s;
+    const mbedtls_ecp_curve_info *curve_info;
+
+    mbedtls_ecdsa_init( &ctx );
+    mbedtls_mpi_init( &sig_r );
+    mbedtls_mpi_init( &sig_s );
+
+    /* Prepare ECP group context */
+    curve_info = mbedtls_ecp_curve_info_from_grp_id( grp_id );
+    TEST_ASSERT( curve_info != NULL );
+    TEST_EQUAL( mbedtls_ecp_group_load( &ctx.grp, curve_info->grp_id ), 0 );
+
+    /* Prepare public key */
+    TEST_EQUAL( mbedtls_mpi_read_string( &ctx.Q.X, 16, x ), 0 );
+    TEST_EQUAL( mbedtls_mpi_read_string( &ctx.Q.Y, 16, y ), 0 );
+    TEST_EQUAL( mbedtls_mpi_lset( &ctx.Q.Z, 1 ), 0 );
+
+    /* Prepare signature R & S */
+    TEST_EQUAL( mbedtls_mpi_read_string( &sig_r, 16, r ), 0 );
+    TEST_EQUAL( mbedtls_mpi_read_string( &sig_s, 16, s ), 0 );
+
+    /* Test whether public key has expected validity */
+    TEST_EQUAL( mbedtls_ecp_check_pubkey( &ctx.grp, &ctx.Q ), key_is_valid ? 0 : MBEDTLS_ERR_ECP_INVALID_KEY );
+
+    /* Verification */
+    int result = mbedtls_ecdsa_verify( &ctx.grp, FUZZ_DATA, ( size_t ) len, &ctx.Q, &sig_r, &sig_s );
+
+    TEST_EQUAL( result, expected );
+
+    if ( !key_is_valid ) {
+        /* Invalid public key must always fail */
+        TEST_ASSERT( result != 0 );
+    }
+
+exit:
+    mbedtls_ecdsa_free( &ctx );
+    mbedtls_mpi_free( &sig_r );
+    mbedtls_mpi_free( &sig_s );
+}
+/* END_CASE */
\ No newline at end of file