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(Ruby) RSA Sign using a Private Key on a USB Token or SmartcardSee more Apple Keychain ExamplesCreate an RSA signature using a private key stored on a USB token or smartcard. Note: On MacOS and iOS, this example requires Chilkat v10.1.2 or later when the Apple Keychain is used as the underlying means to do the signing.
require 'chilkat' # 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. cert = Chilkat::CkCert.new() # Set the token/smartcard PIN prior to loading. cert.put_SmartCardPin("123456") # Specify the certificate by its common name. success = cert.LoadFromSmartcard("cn=chilkat-rsa-2048") if (success == false) print cert.lastErrorText() + "\n"; exit end print "Signing with cert: " + cert.subjectCN() + "\n"; # Create data to be hashed and signed. bd = Chilkat::CkBinData.new() for i in 0 .. 100 bd.AppendEncoded("000102030405060708090A0B0C0D0E0F","hex") end rsa = Chilkat::CkRsa.new() # Use the certificate's private key for signing. success = rsa.SetX509Cert(cert,true) if (success == false) print rsa.lastErrorText() + "\n"; exit end # Sign the SHA-256 hash of the contents of bd. bdSig = Chilkat::CkBinData.new() success = rsa.SignBd(bd,"sha256",bdSig) if (success == false) print rsa.lastErrorText() + "\n"; exit end # The RSA signature is equal in length to the size of the RSA key. print "Output signature size in bits = " + (bdSig.get_NumBytes() * 8).to_s() + "\n"; # We can save the signature for later verification.. bdSig.WriteFile("rsaSignatures/test1.sig") # See the example to verify the RSA signature: # Verfies an RSA Signature |
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