/* 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, int radix_N, char *input_N, int radix_E,
                               char *input_E, int hash,
                               char *message_hex_string, char *seed,
                               char *result_hex_str, int result )
{
    unsigned char message_str[87];
    unsigned char output[256];
    unsigned char output_str[513];
    unsigned char rnd_buf[20];
    mbedtls_rsa_context ctx;
    size_t msg_len;
    rnd_buf_info info;
    mbedtls_mpi N, E;

    info.length = unhexify( rnd_buf, seed );
    info.buf = rnd_buf;

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

    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 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 );

    msg_len = unhexify( message_str, message_hex_string );

    TEST_ASSERT( mbedtls_rsa_pkcs1_encrypt( &ctx, &rnd_buffer_rand, &info, MBEDTLS_RSA_PUBLIC, msg_len, message_str, output ) == result );
    if( result == 0 )
    {
        hexify( output_str, output, ctx.len );

        TEST_ASSERT( strcasecmp( (char *) output_str, result_hex_str ) == 0 );
    }

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

/* BEGIN_CASE */
void pkcs1_rsaes_oaep_decrypt( int mod, int radix_P, char *input_P,
                               int radix_Q, char *input_Q, int radix_N,
                               char *input_N, int radix_E, char *input_E,
                               int hash, char *result_hex_str, char *seed,
                               char *message_hex_string, int result )
{
    unsigned char message_str[256];
    unsigned char output[256];
    unsigned char output_str[513];
    mbedtls_rsa_context ctx;
    size_t output_len;
    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( message_str, 0x00, sizeof( message_str) );
    memset( output, 0x00, sizeof( output ) );
    memset( output_str, 0x00, sizeof( output_str) );
    memset( &rnd_info, 0, sizeof( rnd_pseudo_info ) );

    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 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 );

    unhexify( message_str, message_hex_string );

    TEST_ASSERT( mbedtls_rsa_pkcs1_decrypt( &ctx, &rnd_pseudo_rand, &rnd_info,
                                            MBEDTLS_RSA_PRIVATE, &output_len,
                                            message_str, output, sizeof( output ) ) == result );
    if( result == 0 )
    {
        hexify( output_str, output, ctx.len );
        TEST_ASSERT( strncasecmp( (char *) output_str, result_hex_str, strlen( result_hex_str ) ) == 0 );
    }

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, int radix_P, char *input_P, int radix_Q,
                            char *input_Q, int radix_N, char *input_N,
                            int radix_E, char *input_E, int digest, int hash,
                            char *message_hex_string, char *salt,
                            char *result_hex_str, int result )
{
    unsigned char message_str[255];
    unsigned char hash_result[MBEDTLS_MD_MAX_SIZE];
    unsigned char output[256];
    unsigned char output_str[513];
    unsigned char rnd_buf[20];
    mbedtls_rsa_context ctx;
    size_t msg_len;
    rnd_buf_info info;
    mbedtls_mpi N, P, Q, E;

    info.length = unhexify( rnd_buf, salt );
    info.buf = rnd_buf;

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

    TEST_ASSERT( mbedtls_mpi_read_string( &P, radix_P, input_P ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_string( &Q, radix_Q, input_Q ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 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 );

    msg_len = unhexify( message_str, message_hex_string );

    if( mbedtls_md_info_from_type( digest ) != NULL )
        TEST_ASSERT( mbedtls_md( mbedtls_md_info_from_type( digest ), message_str,
                                 msg_len, hash_result ) == 0 );

    TEST_ASSERT( mbedtls_rsa_pkcs1_sign( &ctx, &rnd_buffer_rand, &info, MBEDTLS_RSA_PRIVATE,
                                         digest, 0, hash_result, output ) == result );
    if( result == 0 )
    {
        hexify( output_str, output, ctx.len);

        TEST_ASSERT( strcasecmp( (char *) output_str, result_hex_str ) == 0 );
    }

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, int radix_N, char *input_N, int radix_E,
                              char *input_E, int digest, int hash,
                              char *message_hex_string, char *salt,
                              char *result_hex_str, int result )
{
    unsigned char message_str[255];
    unsigned char hash_result[MBEDTLS_MD_MAX_SIZE];
    unsigned char result_str[256];
    mbedtls_rsa_context ctx;
    size_t msg_len;
    mbedtls_mpi N, E;
    ((void) salt);

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

    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 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 );

    msg_len = unhexify( message_str, message_hex_string );
    unhexify( result_str, result_hex_str );

    if( mbedtls_md_info_from_type( digest ) != NULL )
        TEST_ASSERT( mbedtls_md( mbedtls_md_info_from_type( digest ), message_str,
                                 msg_len, hash_result ) == 0 );

    TEST_ASSERT( mbedtls_rsa_pkcs1_verify( &ctx, NULL, NULL, MBEDTLS_RSA_PUBLIC,
                                           digest, 0, hash_result, result_str ) == 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,
                                  int radix_N, char *input_N,
                                  int radix_E, char *input_E,
                                  int msg_digest_id, int ctx_hash,
                                  int mgf_hash, int salt_len,
                                  char *message_hex_string,
                                  char *result_hex_str,
                                  int result_simple,
                                  int result_full )
{
    unsigned char message_str[163];
    unsigned char hash_result[MBEDTLS_MD_MAX_SIZE];
    unsigned char result_str[256];
    mbedtls_rsa_context ctx;
    size_t msg_len, 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( message_str, 0x00, sizeof( message_str ) );
    memset( hash_result, 0x00, sizeof( hash_result ) );
    memset( result_str, 0x00, sizeof( result_str ) );
    TEST_ASSERT( mbedtls_mpi_read_string( &N, radix_N, input_N ) == 0 );
    TEST_ASSERT( mbedtls_mpi_read_string( &E, radix_E, input_E ) == 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 );

    msg_len = unhexify( message_str, message_hex_string );
    unhexify( result_str, result_hex_str );

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

    TEST_ASSERT( mbedtls_rsa_pkcs1_verify( &ctx, NULL, NULL, MBEDTLS_RSA_PUBLIC,
                                   msg_digest_id, hash_len, hash_result,
                                   result_str ) == 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 ) == result_full );

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