private void button32_Click(object sender, EventArgs e)
        {
            EncryptionMode encryptionMode;

            if (rbECB_Pecat.Checked)
            {
                encryptionMode = EncryptionMode.ECB;
            }
            else if (rbCFB_Pecat.Checked)
            {
                encryptionMode = EncryptionMode.CFB;
            }
            else if (rbOFB_Pecat.Checked)
            {
                encryptionMode = EncryptionMode.OFB;
            }
            else
            {
                encryptionMode = EncryptionMode.CBC;
            }

            var hasningMode = HashingMode.SHA_1;

            if (rbSHA_1_Pecat.Checked)
            {
                hasningMode = HashingMode.SHA_1;
            }
            else if (rbSHA_2_256_Pecat.Checked)
            {
                hasningMode = HashingMode.SHA_2_256;
            }
            else if (rbSHA_2_256_Pecat.Checked)
            {
                hasningMode = HashingMode.SHA_2_512;
            }

            KeySize keySize;

            if (rbVelicina128_Pecat.Checked)
            {
                keySize = KeySize._128;
            }
            else if (rbVelicina192_Pecat.Checked)
            {
                keySize = KeySize._192;
            }
            else
            {
                keySize = KeySize._256;
            }

            var algorithm = rbAES_Pecat.Checked ? SymetricAlgorithm.AES : SymetricAlgorithm.THREE_DES;

            DigitalSeal.CreateDigitalSeal(tbUlaznaDatotekaPecat.Text, tbJavniKljucPrimatelja_Pecat.Text, tbTajniKljucPosiljatelja_Pecat.Text, tbDigitalnaOmotnicaIzrada_Pecat.Text, tbDigitalniPotpisIzrada_Pecat.Text, encryptionMode, hasningMode, algorithm, keySize);
        }
        private void button39_Click(object sender, EventArgs e)
        {
            EncryptionMode encryptionMode;

            if (rbECB_Pecat2.Checked)
            {
                encryptionMode = EncryptionMode.ECB;
            }
            else if (rbCFB_Pecat2.Checked)
            {
                encryptionMode = EncryptionMode.CFB;
            }
            else if (rbOFB_Pecat2.Checked)
            {
                encryptionMode = EncryptionMode.OFB;
            }
            else
            {
                encryptionMode = EncryptionMode.CBC;
            }

            var hasningMode = HashingMode.SHA_1;

            if (rbSHA_1_Pecat2.Checked)
            {
                hasningMode = HashingMode.SHA_1;
            }
            else if (rbSHA_2_256_Pecat2.Checked)
            {
                hasningMode = HashingMode.SHA_2_256;
            }
            else if (rbSHA_2_256_Pecat2.Checked)
            {
                hasningMode = HashingMode.SHA_2_512;
            }

            var algorithm = rbAES_Pecat2.Checked ? SymetricAlgorithm.AES : SymetricAlgorithm.THREE_DES;

            DigitalSeal.CheckDigitalSeal(tbDobivenaPoruka.Text, tbJavniKljucPosiljatelja_Pecat.Text, tbTajniKljucPrimatelja_Pecat.Text, tbDigitalnaOmotnicaOtvaranje_Pecat.Text, tbDigitalniPotpisProvjera_Pecat.Text, tbProvjeraPecata, encryptionMode, hasningMode, algorithm);
        }