[es] - Enkripcija i dekripcija

patak_daca

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^{27.02.2011. u 15:31 - pre 160 meseci}

Radim u MS SQL-u...

Imam table usera..
Kolonu userpass sa encrypt-ovao

Kada iz aplikacije prosledim parametar userpass koji nije encryptovan..
nedobijem nikakav rezultat.

code..

OPEN SYMMETRIC KEY PasswordFieldSymmetricKey
DECRYPTION BY CERTIFICATE PasswordFieldCertificate

SELECT * FROM user WHERE userpass = EncryptByKey(Key_GUID('PasswordFieldSymmetricKey'), @sifra)

ako neko ima iskustva...

pozz

patak daca

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Dusan Kondic
Programer
ZR "Parametar" Ljubovija
Ljubovija

Član broj: 49961
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Sajt: www.drinacoding.com

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Re: Enkripcija i dekripcija

^{28.02.2011. u 07:37 - pre 160 meseci}

> ako neko ima iskustva...

Ja koristim .NET rešenje.

Code:

        public static string Decrypt(string cipherText, string Password)
        {
            byte[] cipherBytes = Convert.FromBase64String(cipherText);

            PasswordDeriveBytes pdb = new PasswordDeriveBytes(Password,
                new byte[] {0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65,
                    0x64, 0x76, 0x65, 0x64, 0x65, 0x76});

            byte[] decryptedData = Decrypt(cipherBytes, pdb.GetBytes(32), pdb.GetBytes(16));

            return System.Text.Encoding.Unicode.GetString(decryptedData);
        }

        public static string Encrypt(string clearText, string Password)
        {
            byte[] clearBytes =
              System.Text.Encoding.Unicode.GetBytes(clearText);

            PasswordDeriveBytes pdb = new PasswordDeriveBytes(Password,
                new byte[] {0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d,
            0x65, 0x64, 0x76, 0x65, 0x64, 0x65, 0x76});

            byte[] encryptedData = Encrypt(clearBytes,
                     pdb.GetBytes(32), pdb.GetBytes(16));

            return Convert.ToBase64String(encryptedData);
        }

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