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(Node.js) RSA Sign utf-8 Bytes of String to get Base64 RSA SignatureSee more Apple Keychain ExamplesDemonstrates how RSA sign the utf-8 byte representation of a string to get the signature in base64 format.
var os = require('os'); if (os.platform() == 'win32') { var chilkat = require('@chilkat/ck-node23-win64'); } else if (os.platform() == 'linux') { if (os.arch() == 'arm') { var chilkat = require('@chilkat/ck-node23-linux-arm'); } else if (os.arch() == 'arm64') { var chilkat = require('@chilkat/ck-node23-linux-arm64'); } else { var chilkat = require('@chilkat/ck-node23-linux-x64'); } } else if (os.platform() == 'darwin') { var chilkat = require('@chilkat/ck-node23-mac-universal'); } function chilkatExample() { // Assuming the smartcard/USB token is installed with the correct drivers from the manufacturer, // this code can work on multiple platforms including Windows, MacOS, Linux, and iOS. // Chilkat automatically detects and determines the way in which the HSM is used, // which can be by PKCS11, Apple Keychain, Microsoft CNG / Crypto API, or ScMinidriver. var cert = new chilkat.Cert(); // Set the token/smartcard PIN prior to loading. cert.SmartCardPin = "123456"; // Specify the certificate by its common name. var success = cert.LoadFromSmartcard("cn=chilkat-rsa-2048"); if (success == false) { console.log(cert.LastErrorText); return; } console.log("Signing with cert: " + cert.SubjectCN); // Create a string to be hashed and signed. var sb = new chilkat.StringBuilder(); var crlfLineEnding = true; var i; for (i = 0; i <= 10; i++) { sb.AppendLine("This is a test.",crlfLineEnding); } var rsa = new chilkat.Rsa(); // Use the certificate's private key for signing. success = rsa.SetX509Cert(cert,true); if (success == false) { console.log(rsa.LastErrorText); return; } // Sign the SHA-256 hash of the utf-8 byte representation of the contents of sb // Return the signature in base64 format. rsa.EncodingMode = "base64"; rsa.Charset = "utf-8"; var stringToSign = sb.GetAsString(); var sigBase64 = rsa.SignStringENC(stringToSign,"sha256"); if (rsa.LastMethodSuccess == false) { console.log(rsa.LastErrorText); return; } console.log("RSA signature as base64: " + sigBase64); } chilkatExample(); |
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