(C#) PBES2 Password-Based Encryption

See more Encryption Examples

For more information, see https://www.chilkatsoft.com/explaining_pbes2_encryption.asp

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// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

// Set properties for PBES2 encryption:

// When the encryption algorithm is set to "pbes2",
// Chilkat will automatically derive the actual secret key using PBKDF2 and
// the specified paramters: password, salt, iteration count, hash function, and desired key length.

crypt.CryptAlgorithm = "pbes2";
crypt.PbesPassword = "mySecretPassword";

// Set the underlying PBE algorithm (and key length):
crypt.PbesAlgorithm = "aes";
crypt.KeyLength = 256;

crypt.SetEncodedIV("000102030405060708090A0B0C0D0E0F","hex");

// Give it some salt:
crypt.SetEncodedSalt("0102030405060708","hex");

// A higher iteration count makes the algorithm more
// computationally expensive and therefore exhaustive
// searches (for breaking the encryption) is more difficult:
crypt.IterationCount = 1024;

// A hash algorithm needs to be set for PBES2:
crypt.HashAlgorithm = "sha256";

// Indicate that the encrypted bytes should be returned
// as a hex string:
crypt.EncodingMode = "hex";

string plainText = "To be encrypted.";

string encryptedText = crypt.EncryptStringENC(plainText);

Debug.WriteLine(encryptedText);

// Now decrypt:
string decryptedText = crypt.DecryptStringENC(encryptedText);

Debug.WriteLine(decryptedText);