/* BEGIN_HEADER */
#include "test/psa_crypto_helpers.h"

#include "drivers/test_driver.h"

uint8_t test_secp256r1_key_data[32] = {
    0xab, 0x45, 0x43, 0x57, 0x12, 0x64, 0x9c, 0xb3,
    0x0b, 0xbd, 0xda, 0xc4, 0x91, 0x97, 0xee, 0xbf,
    0x27, 0x40, 0xff, 0xc7, 0xf8, 0x74, 0xd9, 0x24,
    0x4c, 0x34, 0x60, 0xf5, 0x4f, 0x32, 0x2d, 0x3a,
};
uint8_t test_hash_32[32] = {
    0x9a, 0xc4, 0x33, 0x5b, 0x46, 0x9b, 0xbd, 0x79,
    0x14, 0x39, 0x24, 0x85, 0x04, 0xdd, 0x0d, 0x49,
    0xc7, 0x13, 0x49, 0xa2, 0x95, 0xfe, 0xe5, 0xa1,
    0xc6, 0x85, 0x07, 0xf4, 0x5a, 0x9e, 0x1c, 0x7b,
};
uint8_t test_signature_hash_32_with_secp256r1[64] = {
    0x6a, 0x33, 0x99, 0xf6, 0x94, 0x21, 0xff, 0xe1,
    0x49, 0x03, 0x77, 0xad, 0xf2, 0xea, 0x1f, 0x11,
    0x7d, 0x81, 0xa6, 0x3c, 0xf5, 0xbf, 0x22, 0xe9,
    0x18, 0xd5, 0x11, 0x75, 0xeb, 0x25, 0x91, 0x51,
    0xce, 0x95, 0xd7, 0xc2, 0x6c, 0xc0, 0x4e, 0x25,
    0x50, 0x3e, 0x2f, 0x7a, 0x1e, 0xc3, 0x57, 0x3e,
    0x3c, 0x24, 0x12, 0x53, 0x4b, 0xb4, 0xa1, 0x9b,
    0x3a, 0x78, 0x11, 0x74, 0x2f, 0x49, 0xf5, 0x0f,
};
uint8_t test_secp256r1_public_key_data[65] = {
    0x04,
    0xde, 0xa5, 0xe4, 0x5d, 0x0e, 0xa3, 0x7f, 0xc5,
    0x66, 0x23, 0x2a, 0x50, 0x8f, 0x4a, 0xd2, 0x0e,
    0xa1, 0x3d, 0x47, 0xe4, 0xbf, 0x5f, 0xa4, 0xd5,
    0x4a, 0x57, 0xa0, 0xba, 0x01, 0x20, 0x42, 0x08,
    0x70, 0x97, 0x49, 0x6e, 0xfc, 0x58, 0x3f, 0xed,
    0x8b, 0x24, 0xa5, 0xb9, 0xbe, 0x9a, 0x51, 0xde,
    0x06, 0x3f, 0x5a, 0x00, 0xa8, 0xb6, 0x98, 0xa1,
    0x6f, 0xd7, 0xf2, 0x9b, 0x54, 0x85, 0xf3, 0x20
};

uint8_t test_fake_output[] = "INJECTED OUTPUT";

typedef enum
{
    EXPECT_FAILURE,
    EXPECT_CORRECT_OUTPUT,
    EXPECT_FAKE_OUTPUT,
} expected_output_t;

/* END_HEADER */

/* BEGIN_DEPENDENCIES
 * depends_on:MBEDTLS_PSA_CRYPTO_C:MBEDTLS_PSA_CRYPTO_DRIVERS:MBEDTLS_TEST_HOOKS
 * END_DEPENDENCIES
 */

/* BEGIN_CASE depends_on:MBEDTLS_ECDSA_C:MBEDTLS_ECDSA_DETERMINISTIC:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_SHA256_C */
void ecdsa_sign( int force_status_arg,
                 int fake_output,
                 int expected_status_arg )
{
    psa_status_t force_status = force_status_arg;
    psa_status_t expected_status = expected_status_arg;
    psa_key_handle_t handle = 0;
    psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
    psa_algorithm_t alg = PSA_ALG_DETERMINISTIC_ECDSA( PSA_ALG_SHA_256 );
    uint8_t signature[64];
    size_t signature_length = 0xdeadbeef;
    const uint8_t *expected_output;
    size_t expected_output_length;
    psa_status_t actual_status;

    PSA_ASSERT( psa_crypto_init( ) );
    psa_set_key_type( &attributes,
                      PSA_KEY_TYPE_ECC_KEY_PAIR( PSA_ECC_CURVE_SECP_R1 ) );
    psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_SIGN_HASH );
    psa_set_key_algorithm( &attributes, alg );
    psa_import_key( &attributes,
                    test_secp256r1_key_data, sizeof( test_secp256r1_key_data ),
                    &handle );

    test_transparent_signature_sign_hash_hit = 0;
    test_transparent_signature_sign_hash_status = force_status;
    if( fake_output )
    {
        expected_output = test_driver_forced_output = test_fake_output;
        expected_output_length = test_driver_forced_output_length =
            sizeof( test_fake_output );
    }
    else
    {
        expected_output = test_signature_hash_32_with_secp256r1;
        expected_output_length = sizeof( test_signature_hash_32_with_secp256r1 );
    }

    actual_status = psa_sign_hash( handle, alg,
                                   test_hash_32, sizeof( test_hash_32 ),
                                   signature, sizeof( signature ),
                                   &signature_length );
    TEST_EQUAL( actual_status, expected_status );
    if( expected_status == PSA_SUCCESS )
    {
        ASSERT_COMPARE( signature, signature_length,
                        expected_output, expected_output_length );
    }
    TEST_EQUAL( test_transparent_signature_sign_hash_hit, 1 );

exit:
    psa_reset_key_attributes( &attributes );
    psa_destroy_key( handle );
    PSA_DONE( );
    test_transparent_signature_sign_hash_status = PSA_ERROR_NOT_SUPPORTED;
    test_driver_forced_output = NULL;
    test_driver_forced_output_length = 0;
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_ECDSA_C:MBEDTLS_ECDSA_DETERMINISTIC:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_SHA256_C */
void ecdsa_verify( int force_status_arg,
                   int register_public_key,
                   int expected_status_arg )
{
    psa_status_t force_status = force_status_arg;
    psa_status_t expected_status = expected_status_arg;
    psa_key_handle_t handle = 0;
    psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
    psa_algorithm_t alg = PSA_ALG_DETERMINISTIC_ECDSA( PSA_ALG_SHA_256 );
    const uint8_t *expected_output;
    size_t expected_output_length;
    psa_status_t actual_status;

    PSA_ASSERT( psa_crypto_init( ) );
    if( register_public_key )
    {
        psa_set_key_type( &attributes,
                      PSA_KEY_TYPE_ECC_PUBLIC_KEY( PSA_ECC_CURVE_SECP_R1 ) );
        psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_VERIFY_HASH );
        psa_set_key_algorithm( &attributes, alg );
        psa_import_key( &attributes,
                        test_secp256r1_public_key_data, sizeof( test_secp256r1_public_key_data ),
                        &handle );
    }
    else
    {
        psa_set_key_type( &attributes,
                      PSA_KEY_TYPE_ECC_KEY_PAIR( PSA_ECC_CURVE_SECP_R1 ) );
        psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_VERIFY_HASH );
        psa_set_key_algorithm( &attributes, alg );
        psa_import_key( &attributes,
                        test_secp256r1_key_data, sizeof( test_secp256r1_key_data ),
                        &handle );
    }

    test_transparent_signature_verify_hash_hit = 0;
    test_transparent_signature_verify_hash_status = force_status;

    expected_output = test_signature_hash_32_with_secp256r1;
    expected_output_length = sizeof( test_signature_hash_32_with_secp256r1 );

    actual_status = psa_verify_hash( handle, alg,
                                     test_hash_32, sizeof( test_hash_32 ),
                                     expected_output, expected_output_length );
    TEST_EQUAL( actual_status, expected_status );
    TEST_EQUAL( test_transparent_signature_verify_hash_hit, 1 );

exit:
    psa_reset_key_attributes( &attributes );
    psa_destroy_key( handle );
    PSA_DONE( );
    test_transparent_signature_sign_hash_status = PSA_ERROR_NOT_SUPPORTED;
    test_driver_forced_output = NULL;
    test_driver_forced_output_length = 0;
}
/* END_CASE */

/* BEGIN_CASE depends_on:MBEDTLS_ECDSA_C:MBEDTLS_ECP_DP_SECP256R1_ENABLED */
void generate_key( int force_status_arg,
                   int fake_output,
                   int expected_status_arg )
{
    psa_status_t force_status = force_status_arg;
    psa_status_t expected_status = expected_status_arg;
    psa_key_handle_t handle = 0;
    psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT;
    psa_algorithm_t alg = PSA_ALG_ECDSA( PSA_ALG_SHA_256 );
    const uint8_t *expected_output;
    size_t expected_output_length;
    psa_status_t actual_status;
    uint8_t actual_output[sizeof(test_secp256r1_key_data)] = {0};
    size_t actual_output_length;

    psa_set_key_type( &attributes,
                      PSA_KEY_TYPE_ECC_KEY_PAIR( PSA_ECC_CURVE_SECP_R1 ) );
    psa_set_key_bits( &attributes, 256 );
    psa_set_key_usage_flags( &attributes, PSA_KEY_USAGE_SIGN_HASH | PSA_KEY_USAGE_EXPORT );
    psa_set_key_algorithm( &attributes, alg );

    if( fake_output )
    {
        expected_output = test_driver_keygen_forced_output = test_secp256r1_key_data;
        expected_output_length = test_driver_keygen_forced_output_length =
            sizeof( test_secp256r1_key_data );
    }

    test_transparent_keygen_hit = 0;
    test_transparent_keygen_status = force_status;

    PSA_ASSERT( psa_crypto_init( ) );

    actual_status = psa_generate_key( &attributes, &handle );
    fprintf(stdout, "rteturn %d\n", actual_status);

    TEST_EQUAL( test_transparent_keygen_hit, 1 );
    TEST_EQUAL( actual_status, expected_status );

    if( actual_status == PSA_SUCCESS )
    {
        psa_export_key( handle, actual_output, sizeof(actual_output), &actual_output_length );

        if( fake_output )
        {
            ASSERT_COMPARE( actual_output, actual_output_length,
                            expected_output, expected_output_length );
        }
        else
        {
            size_t zeroes = 0;
            for( size_t i = 0; i < sizeof(actual_output); i++ )
            {
                if( actual_output[i] == 0)
                    zeroes++;
            }
            TEST_ASSERT( zeroes != sizeof(actual_output) );
        }
    }
exit:
    psa_reset_key_attributes( &attributes );
    psa_destroy_key( handle );
    PSA_DONE( );
    test_transparent_signature_sign_hash_status = PSA_ERROR_NOT_SUPPORTED;
    test_driver_keygen_forced_output = NULL;
    test_driver_keygen_forced_output_length = 0;
}
/* END_CASE */