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(C#) RSA Encrypt with Modulus and ExponentDemonstrates how to RSA encrypt with a given modulus and exponent. Note: This example requires Chilkat v11.0.0 or greater.
bool success = false; // This example assumes the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Chilkat.Rsa rsa = new Chilkat.Rsa(); // Assuming you already have a base64 modulus and exponent, // wrap it in XML like this: string modulus = "qMBRpdYrAy5aMmo31NErUizh5sbweguSmh4wlK6uJEIDl+kwTlROnE34KOFExeTbJSX0WygPi+vWl0yNq7buIMUKpytossAAWut5khO3CQJxTk7G2gnEPNUUXHiExGgNrLzcSLv8YIlfVALhoRWyC67KOL+a+3taNq3h+BHeWhM="; string exponent = "AQAB"; Chilkat.Xml xml = new Chilkat.Xml(); xml.Tag = "RSAPublicKey"; xml.NewChild2("Modulus",modulus); xml.NewChild2("Exponent",exponent); Chilkat.PublicKey pubKey = new Chilkat.PublicKey(); success = pubKey.LoadFromString(xml); if (success == false) { Debug.WriteLine(pubKey.LastErrorText); return; } success = rsa.UsePublicKey(pubKey); if (success == false) { Debug.WriteLine(rsa.LastErrorText); return; } bool usePrivateKey = false; string plainText = "message in a bottle"; rsa.EncodingMode = "base64"; string encryptedStrBase64 = rsa.EncryptStringENC(plainText,usePrivateKey); Debug.WriteLine(encryptedStrBase64); |
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