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(Xojo Plugin) RSA Encrypt and Decrypt StringsSee more RSA ExamplesXojo Plugin sample code to RSA public-key encrypt and decrypt strings using public and private keys.Note: This example requires Chilkat v11.0.0 or greater.
Dim success As Boolean success = False // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Dim rsa As New Chilkat.Rsa // This example also generates the public and private // keys to be used in the RSA encryption. // Normally, you would generate a key pair once, // and distribute the public key to your partner. // Anything encrypted with the public key can be // decrypted with the private key. The reverse is // also true: anything encrypted using the private // key can be decrypted using the public key. // Generate a 2048-bit key. Chilkat RSA supports // key sizes ranging from 512 bits to 4096 bits. Dim privKey As New Chilkat.PrivateKey success = rsa.GenKey(2048,privKey) If (success = False) Then System.DebugLog(rsa.LastErrorText) Return End If Dim pubKey As New Chilkat.PublicKey success = privKey.ToPublicKey(pubKey) Dim plainText As String plainText = "Encrypting and decrypting should be easy!" // Start with a new RSA object to demonstrate that all we // need are the keys previously exported: Dim rsaEncryptor As New Chilkat.Rsa // Encrypted output is always binary. In this case, we want // to encode the encrypted bytes in a printable string. // Our choices are "hex", "base64", "url", "quoted-printable". rsaEncryptor.EncodingMode = "hex" // We'll encrypt with the public key and decrypt with the private // key. success = rsaEncryptor.UsePublicKey(pubKey) Dim usePrivateKey As Boolean usePrivateKey = False Dim encryptedStr As String encryptedStr = rsaEncryptor.EncryptStringENC(plainText,usePrivateKey) System.DebugLog(encryptedStr) // Now decrypt: Dim rsaDecryptor As New Chilkat.Rsa rsaDecryptor.EncodingMode = "hex" success = rsaDecryptor.UsePrivateKey(privKey) usePrivateKey = True Dim decryptedStr As String decryptedStr = rsaDecryptor.DecryptStringENC(encryptedStr,usePrivateKey) System.DebugLog(decryptedStr) |
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