/* BEGIN_HEADER */
#include "mbedtls/rsa.h"
#include "mbedtls/md.h"
/* END_HEADER */

/* BEGIN_DEPENDENCIES
 * depends_on:MBEDTLS_PKCS1_V21:MBEDTLS_RSA_C:MBEDTLS_SHA1_C
 * END_DEPENDENCIES
 */

/* BEGIN_CASE */
void pkcs1_rsaes_oaep_encrypt( int mod, data_t * input_N, data_t * input_E,
                               int hash, data_t * message_str, data_t * rnd_buf,
                               data_t * result_str, int result )
{
    unsigned char output[256];
    mbedtls_rsa_context ctx;
    mbedtls_test_rnd_buf_info info;
    mbedtls_mpi N, E;

    info.fallback_f_rng = mbedtls_test_rnd_std_rand;
    info.fallback_p_rng = NULL;
    info.buf = rnd_buf->x;
    info.length = rnd_buf->len;

    mbedtls_mpi_init( &N ); mbedtls_mpi_init( &E );
    mbedtls_rsa_init( &ctx, MBEDTLS_RSA_PKCS_V21, hash );
    memset( output, 0x00, sizeof( output ) );

    TEST_ASSERT( mbedtls_mpi_read_binary( &N, input_N->x, input_N->len ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_binary( &E, input_E->x, input_E->len ) == 0 );
    TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
    TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( ( mod + 7 ) / 8 ) );
    TEST_ASSERT( mbedtls_rsa_check_pubkey( &ctx ) == 0 );

    if( message_str->len == 0 )
        message_str->x = NULL;
    TEST_ASSERT( mbedtls_rsa_pkcs1_encrypt( &ctx,
                                            &mbedtls_test_rnd_buffer_rand,
                                            &info, MBEDTLS_RSA_PUBLIC,
                                            message_str->len, message_str->x,
                                            output ) == result );
    if( result == 0 )
    {
        ASSERT_COMPARE( output, ctx.len, result_str->x, result_str->len );
    }

exit:
    mbedtls_mpi_free( &N ); mbedtls_mpi_free( &E );
    mbedtls_rsa_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE */
void pkcs1_rsaes_oaep_decrypt( int mod, data_t * input_P, data_t * input_Q,
                               data_t * input_N, data_t * input_E, int hash,
                               data_t * result_str, char * seed, data_t * message_str,
                               int result )
{
    unsigned char output[64];
    mbedtls_rsa_context ctx;
    size_t output_len;
    mbedtls_test_rnd_pseudo_info rnd_info;
    mbedtls_mpi N, P, Q, E;
    ((void) seed);

    mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P );
    mbedtls_mpi_init( &Q ); mbedtls_mpi_init( &E );

    mbedtls_rsa_init( &ctx, MBEDTLS_RSA_PKCS_V21, hash );

    memset( output, 0x00, sizeof( output ) );
    memset( &rnd_info, 0, sizeof( mbedtls_test_rnd_pseudo_info ) );

    TEST_ASSERT( mbedtls_mpi_read_binary( &P, input_P->x, input_P->len ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_binary( &Q, input_Q->x, input_Q->len ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_binary( &N, input_N->x, input_N->len ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_binary( &E, input_E->x, input_E->len ) == 0 );

    TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, &P, &Q, NULL, &E ) == 0 );
    TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( ( mod + 7 ) / 8 ) );
    TEST_ASSERT( mbedtls_rsa_complete( &ctx ) == 0 );
    TEST_ASSERT( mbedtls_rsa_check_privkey( &ctx ) == 0 );

    if( result_str->len == 0 )
    {
        TEST_ASSERT( mbedtls_rsa_pkcs1_decrypt( &ctx,
                                                &mbedtls_test_rnd_pseudo_rand,
                                                &rnd_info,
                                                MBEDTLS_RSA_PRIVATE,
                                                &output_len, message_str->x,
                                                NULL, 0 ) == result );
    }
    else
    {
        TEST_ASSERT( mbedtls_rsa_pkcs1_decrypt( &ctx,
                                                &mbedtls_test_rnd_pseudo_rand,
                                                &rnd_info,
                                                MBEDTLS_RSA_PRIVATE,
                                                &output_len, message_str->x,
                                                output,
                                                sizeof( output ) ) == result );
        if( result == 0 )
        {
            ASSERT_COMPARE( output, output_len, result_str->x, result_str->len );
        }
    }

exit:
    mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P );
    mbedtls_mpi_free( &Q ); mbedtls_mpi_free( &E );
    mbedtls_rsa_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE */
void pkcs1_rsassa_pss_sign( int mod, data_t * input_P, data_t * input_Q,
                            data_t * input_N, data_t * input_E, int digest,
                            int hash, data_t * message_str, data_t * rnd_buf,
                            data_t * result_str, int fixed_salt_length,
                            int result )
{
    unsigned char hash_result[MBEDTLS_MD_MAX_SIZE];
    unsigned char output[512];
    mbedtls_rsa_context ctx;
    mbedtls_test_rnd_buf_info info;
    mbedtls_mpi N, P, Q, E;

    info.fallback_f_rng = mbedtls_test_rnd_std_rand;
    info.fallback_p_rng = NULL;
    info.buf = rnd_buf->x;
    info.length = rnd_buf->len;

    mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P );
    mbedtls_mpi_init( &Q ); mbedtls_mpi_init( &E );
    mbedtls_rsa_init( &ctx, MBEDTLS_RSA_PKCS_V21, hash );

    memset( hash_result, 0x00, sizeof( hash_result ) );
    memset( output, 0x00, sizeof( output ) );

    TEST_ASSERT( mbedtls_mpi_read_binary( &P, input_P->x, input_P->len ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_binary( &Q, input_Q->x, input_Q->len ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_binary( &N, input_N->x, input_N->len ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_binary( &E, input_E->x, input_E->len ) == 0 );

    TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, &P, &Q, NULL, &E ) == 0 );
    TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( ( mod + 7 ) / 8 ) );
    TEST_ASSERT( mbedtls_rsa_complete( &ctx ) == 0 );
    TEST_ASSERT( mbedtls_rsa_check_privkey( &ctx ) == 0 );

    if( mbedtls_md_info_from_type( digest ) != NULL )
        TEST_ASSERT( mbedtls_md( mbedtls_md_info_from_type( digest ), message_str->x, message_str->len, hash_result ) == 0 );

    if (fixed_salt_length == MBEDTLS_RSA_SALT_LEN_ANY)
    {
        TEST_ASSERT( mbedtls_rsa_pkcs1_sign( &ctx, &mbedtls_test_rnd_buffer_rand,
                                             &info, MBEDTLS_RSA_PRIVATE, digest, 0,
                                             hash_result, output ) == result );
        if( result == 0 )
        {
            ASSERT_COMPARE( output, ctx.len, result_str->x, result_str->len );
        }

        info.buf = rnd_buf->x;
        info.length = rnd_buf->len;
    }

    TEST_ASSERT( mbedtls_rsa_rsassa_pss_sign_ext( &ctx, &mbedtls_test_rnd_buffer_rand,
                                                  &info, digest, 0, hash_result,
                                                  fixed_salt_length, output ) == result );
    if( result == 0 )
    {
        ASSERT_COMPARE( output, ctx.len, result_str->x, result_str->len );
    }

exit:
    mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P );
    mbedtls_mpi_free( &Q ); mbedtls_mpi_free( &E );
    mbedtls_rsa_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE */
void pkcs1_rsassa_pss_verify( int mod, data_t * input_N, data_t * input_E,
                              int digest, int hash, data_t * message_str,
                              char * salt, data_t * result_str, int result )
{
    unsigned char hash_result[MBEDTLS_MD_MAX_SIZE];
    mbedtls_rsa_context ctx;
    mbedtls_mpi N, E;
    ((void) salt);

    mbedtls_mpi_init( &N ); mbedtls_mpi_init( &E );
    mbedtls_rsa_init( &ctx, MBEDTLS_RSA_PKCS_V21, hash );
    memset( hash_result, 0x00, sizeof( hash_result ) );

    TEST_ASSERT( mbedtls_mpi_read_binary( &N, input_N->x, input_N->len ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_binary( &E, input_E->x, input_E->len ) == 0 );

    TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
    TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( ( mod + 7 ) / 8 ) );
    TEST_ASSERT( mbedtls_rsa_check_pubkey( &ctx ) == 0 );


    if( mbedtls_md_info_from_type( digest ) != NULL )
        TEST_ASSERT( mbedtls_md( mbedtls_md_info_from_type( digest ), message_str->x, message_str->len, hash_result ) == 0 );

    TEST_ASSERT( mbedtls_rsa_pkcs1_verify( &ctx, NULL, NULL, MBEDTLS_RSA_PUBLIC, digest, 0, hash_result, result_str->x ) == result );

exit:
    mbedtls_mpi_free( &N ); mbedtls_mpi_free( &E );
    mbedtls_rsa_free( &ctx );
}
/* END_CASE */

/* BEGIN_CASE */
void pkcs1_rsassa_pss_verify_ext( int mod, data_t * input_N, data_t * input_E,
                                  int msg_digest_id, int ctx_hash,
                                  int mgf_hash, int salt_len,
                                  data_t * message_str,
                                  data_t * result_str, int result_simple,
                                  int result_full )
{
    unsigned char hash_result[MBEDTLS_MD_MAX_SIZE];
    mbedtls_rsa_context ctx;
    size_t hash_len;
    mbedtls_mpi N, E;

    mbedtls_mpi_init( &N ); mbedtls_mpi_init( &E );
    mbedtls_rsa_init( &ctx, MBEDTLS_RSA_PKCS_V21, ctx_hash );
    memset( hash_result, 0x00, sizeof( hash_result ) );

    TEST_ASSERT( mbedtls_mpi_read_binary( &N, input_N->x, input_N->len ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_binary( &E, input_E->x, input_E->len ) == 0 );

    TEST_ASSERT( mbedtls_rsa_import( &ctx, &N, NULL, NULL, NULL, &E ) == 0 );
    TEST_ASSERT( mbedtls_rsa_get_len( &ctx ) == (size_t) ( ( mod + 7 ) / 8 ) );
    TEST_ASSERT( mbedtls_rsa_check_pubkey( &ctx ) == 0 );


    if( msg_digest_id != MBEDTLS_MD_NONE )
    {
        TEST_ASSERT( mbedtls_md( mbedtls_md_info_from_type( msg_digest_id ),
                     message_str->x, message_str->len, hash_result ) == 0 );
        hash_len = 0;
    }
    else
    {
        memcpy( hash_result, message_str->x, message_str->len );
        hash_len = message_str->len;
    }

    TEST_ASSERT( mbedtls_rsa_pkcs1_verify( &ctx, NULL, NULL, MBEDTLS_RSA_PUBLIC,
                                   msg_digest_id, hash_len, hash_result,
                                   result_str->x ) == result_simple );

    TEST_ASSERT( mbedtls_rsa_rsassa_pss_verify_ext( &ctx, NULL, NULL, MBEDTLS_RSA_PUBLIC,
                                        msg_digest_id, hash_len, hash_result,
                                        mgf_hash, salt_len,
                                        result_str->x ) == result_full );

exit:
    mbedtls_mpi_free( &N ); mbedtls_mpi_free( &E );
    mbedtls_rsa_free( &ctx );
}
/* END_CASE */
