public void Configure(Crypt2 crypt)
{
crypt.UnlockComponent("Anything for 30-day trial.");
// Set the encryption algorithm to chacha20
// chacha20 is a stream cipher, and therefore no cipher mode applies.
crypt.CryptAlgorithm = "chacha20";
// The key length for chacha20 is always 256-bits.
crypt.KeyLength = 256;
// Note: "padding" only applies to block encryption algorithmns.
// Since chacha20 is a stream cipher, there is no padding and the output
// number of bytes is exactly equal to the input.
// EncodingMode specifies the encoding of the output for
// encryption, and the input for decryption.
// Valid modes are (case insensitive) "Base64", "modBase64", "Base32", "Base58", "UU",
// "QP" (for quoted-printable), "URL" (for url-encoding), "Hex",
// "Q", "B", "url_oauth", "url_rfc1738", "url_rfc2396", and "url_rfc3986".
crypt.EncodingMode = "hex";
// The inputs to ChaCha20 encryption, specified by RFC 7539, are:
// 1) A 256-bit secret key.
// 2) A 96-bit nonce.
// 3) A 32-bit initial count.
// The IV property is used to specify the chacha20 nonce.
// For a 96-bit nonce, the IV should be 12 bytes in length.
//
// Note: Some implementations of chacha20, such as that used internally by SSH,
// use a 64-bit nonce and 64-bit count. To do chacha20 encryption in this way,
// simply provide 8 bytes for the IV instead of 12 bytes. Chilkat will then automatically
// use 8 bytes (64-bits) for the count.
// This example duplicates Test Vector #3 (for ChaCha20 encryption) from RFC 7539.
const string ivHex = "000000000000000000000002";
crypt.SetEncodedIV(ivHex, "hex");
crypt.InitialCount = 42;
var keyHex = Keys.ChaCha20_KeyString;
crypt.SetEncodedKey(keyHex, "hex");
}
public void Configure(Crypt2 crypt)
{
crypt.UnlockComponent("Anything for 30-day trial.");
// Set the encryption algorithm = "rc2"
crypt.CryptAlgorithm = "rc2";
// CipherMode may be "ecb" or "cbc"
crypt.CipherMode = "ecb";
// KeyLength may range from 8 bits to 1024 bits
crypt.KeyLength = 128;
// RC2 also has an effective key length property
// which can also range from 8 bits to 1024 bits:
crypt.Rc2EffectiveKeyLength = 128;
// The padding scheme determines the contents of the bytes
// that are added to pad the result to a multiple of the
// encryption algorithm's block size. RC2 has a block
// size of 8 bytes, so encrypted output is always
// a multiple of 8.
crypt.PaddingScheme = 0;
// EncodingMode specifies the encoding of the output for
// encryption, and the input for decryption.
// It may be "hex", "url", "base64", or "quoted-printable".
crypt.EncodingMode = "hex";
// An initialization vector is required if using CBC mode.
// ECB mode does not use an IV.
// The length of the IV is equal to the algorithm's block size.
// It is NOT equal to the length of the key.
const string ivHex = "0001020304050607";
crypt.SetEncodedIV(ivHex, "hex");
// The secret key must equal the size of the key.
// For 128-bit encryption, the binary secret key is 16 bytes.
var keyHex = Keys.RC2_ECB_KeyString;
crypt.SetEncodedKey(keyHex, "hex");
}
public void Configure(Crypt2 crypt)
{
crypt.UnlockComponent("Anything for 30-day trial.");
// AES is also known as Rijndael.
crypt.CryptAlgorithm = "aes";
// CipherMode may be "ecb", "cbc", "ofb", "cfb", "gcm", etc.
// Note: Check the online reference documentation to see the Chilkat versions
// when certain cipher modes were introduced.
crypt.CipherMode = "cbc";
// KeyLength may be 128, 192, 256
crypt.KeyLength = 256;
// The padding scheme determines the contents of the bytes
// that are added to pad the result to a multiple of the
// encryption algorithm's block size. AES has a block
// size of 16 bytes, so encrypted output is always
// a multiple of 16.
crypt.PaddingScheme = 0;
// EncodingMode specifies the encoding of the output for
// encryption, and the input for decryption.
// It may be "hex", "url", "base64", or "quoted-printable".
crypt.EncodingMode = "hex";
// An initialization vector is required if using CBC mode.
// ECB mode does not use an IV.
// The length of the IV is equal to the algorithm's block size.
// It is NOT equal to the length of the key.
const string ivHex = "000102030405060708090A0B0C0D0E0F";
crypt.SetEncodedIV(ivHex, "hex");
// The secret key must equal the size of the key. For
// 256-bit encryption, the binary secret key is 32 bytes.
// For 128-bit encryption, the binary secret key is 16 bytes.
var keyHex = Keys.AES_KeyString;
crypt.SetEncodedKey(keyHex, "hex");
}
public void Configure(Crypt2 crypt)
{
crypt.UnlockComponent("Anything for 30-day trial.");
// Specify 3DES for the encryption algorithm:
crypt.CryptAlgorithm = "3des";
// CipherMode may be "ecb" or "cbc"
crypt.CipherMode = "cbc";
// KeyLength must be 192. 3DES is technically 168-bits;
// the most-significant bit of each key byte is a parity bit,
// so we must indicate a KeyLength of 192, which includes
// the parity bits.
crypt.KeyLength = 192;
// The padding scheme determines the contents of the bytes
// that are added to pad the result to a multiple of the
// encryption algorithm's block size. 3DES has a block
// size of 8 bytes, so encrypted output is always
// a multiple of 8.
crypt.PaddingScheme = 0;
// EncodingMode specifies the encoding of the output for
// encryption, and the input for decryption.
// It may be "hex", "url", "base64", or "quoted-printable".
crypt.EncodingMode = "hex";
// An initialization vector is required if using CBC or CFB modes.
// ECB mode does not use an IV.
// The length of the IV is equal to the algorithm's block size.
// It is NOT equal to the length of the key.
const string ivHex = "0001020304050607";
crypt.SetEncodedIV(ivHex, "hex");
// The secret key must equal the size of the key. For
// 3DES, the key must be 24 bytes (i.e. 192-bits).
var keyHex = Keys.ThreeDES_CBC_Mode_KeyString;
crypt.SetEncodedKey(keyHex, "hex");
}
public void Configure(Crypt2 crypt)
{
crypt.UnlockComponent("Anything for 30-day trial.");
// Attention: use "blowfish2" for the algorithm name:
crypt.CryptAlgorithm = "blowfish2";
// CipherMode may be "ecb", "cbc", or "cfb"
crypt.CipherMode = "cbc";
// KeyLength (in bits) may be a number between 32 and 448.
// 128-bits is usually sufficient. The KeyLength must be a
// multiple of 8.
crypt.KeyLength = 128;
// The padding scheme determines the contents of the bytes
// that are added to pad the result to a multiple of the
// encryption algorithm's block size. Blowfish has a block
// size of 8 bytes, so encrypted output is always
// a multiple of 8.
crypt.PaddingScheme = 0;
// EncodingMode specifies the encoding of the output for
// encryption, and the input for decryption.
// It may be "hex", "url", "base64", or "quoted-printable".
crypt.EncodingMode = "hex";
// An initialization vector is required if using CBC or CFB modes.
// ECB mode does not use an IV.
// The length of the IV is equal to the algorithm's block size.
// It is NOT equal to the length of the key.
const string ivHex = "0001020304050607";
crypt.SetEncodedIV(ivHex, "hex");
// The secret key must equal the size of the key. For
// 256-bit encryption, the binary secret key is 32 bytes.
// For 128-bit encryption, the binary secret key is 16 bytes.
var keyHex = Keys.Blowfish_CBC_KeyString;
crypt.SetEncodedKey(keyHex, "hex");
}
public static string GenerateMac()
{
Crypt2 crypt = new Crypt2();
bool success = crypt.UnlockComponent("Anything for 30-day trial");
if (success != true)
{
Console.WriteLine(crypt.LastErrorText);
return("");
}
// Specify 3DES for the encryption algorithm:
crypt.CryptAlgorithm = "3des";
// CipherMode may be "ecb" or "cbc"
crypt.CipherMode = "cbc";
// KeyLength must be 192. 3DES is technically 168-bits;
// the most-significant bit of each key byte is a parity bit,
// so we must indicate a KeyLength of 192, which includes
// the parity bits.
crypt.KeyLength = 192;
// The padding scheme determines the contents of the bytes
// that are added to pad the result to a multiple of the
// encryption algorithm's block size. 3DES has a block
// size of 8 bytes, so encrypted output is always
// a multiple of 8.
crypt.PaddingScheme = 0;
// EncodingMode specifies the encoding of the output for
// encryption, and the input for decryption.
// It may be "hex", "url", "base64", or "quoted-printable".
crypt.EncodingMode = "hex";
// An initialization vector is required if using CBC or CFB modes.
// ECB mode does not use an IV.
// The length of the IV is equal to the algorithm's block size.
// It is NOT equal to the length of the key.
string ivHex = "0001020304050607";
crypt.SetEncodedIV(ivHex, "hex");
// The secret key must equal the size of the key. For
// 3DES, the key must be 24 bytes (i.e. 192-bits).
string keyHex = "000102030405060708090A0B0C0D0E0F0001020304050607";
crypt.SetEncodedKey(keyHex, "hex");
// Encrypt a string...
// The input string is 44 ANSI characters (i.e. 44 bytes), so
// the output should be 48 bytes (a multiple of 8).
// Because the output is a hex string, it should
// be 96 characters long (2 chars per byte).
string encStr = crypt.EncryptStringENC("The quick brown fox jumps over the lazy dog.");
Console.WriteLine(encStr);
// Now decrypt:
string decStr = crypt.DecryptStringENC(encStr);
Console.WriteLine(decStr);
return(decStr);
}
