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(Go) RC2 Encryption and DecryptionRC2 encryption. The Chilkat encryption component supports RC2 encryption in both ECB (Electronic Cookbook) and CBC (Cipher-Block Chaining) modes. The key size may range from 8 bits to 1024 bits.
// This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. crypt := chilkat.NewCrypt2() // Set the encryption algorithm = "rc2" crypt.SetCryptAlgorithm("rc2") // CipherMode may be "ecb" or "cbc" crypt.SetCipherMode("cbc") // KeyLength may range from 8 bits to 1024 bits crypt.SetKeyLength(128) // RC2 also has an effective key length property // which can also range from 8 bits to 1024 bits: crypt.SetRc2EffectiveKeyLength(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.SetPaddingScheme(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.SetEncodingMode("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. 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. keyHex := "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F" 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). encStr := crypt.EncryptStringENC("The quick brown fox jumps over the lazy dog.") fmt.Println(*encStr) // Now decrypt: decStr := crypt.DecryptStringENC(*encStr) fmt.Println(*decStr) crypt.DisposeCrypt2() |
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