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(Tcl) RSA Signature with Certificate's Private Key from PFXSee more RSA ExamplesDemonstrates how to use a certificate's private key from a PFX file to create an RSA signature.Note: This example requires Chilkat v11.0.0 or greater.
load ./chilkat.dll set success 0 # This example requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. # Create an instance of a certificate store object, load a PFX file, # locate the certificate we need, and use it for signing. # (a PFX file may contain more than one certificate.) set certStore [new_CkCertStore] # The 1st argument is the filename, the 2nd arg is the # PFX file's password: set success [CkCertStore_LoadPfxFile $certStore "chilkat.pfx" "test"] if {$success == 0} then { puts [CkCertStore_lastErrorText $certStore] delete_CkCertStore $certStore exit } # Find the certificate by the subject common name: set jsonCN [new_CkJsonObject] CkJsonObject_UpdateString $jsonCN "CN" "cert common name" set cert [new_CkCert] set success [CkCertStore_FindCert $certStore $jsonCN $cert] if {$success == 0} then { puts [CkCertStore_lastErrorText $certStore] delete_CkCertStore $certStore delete_CkJsonObject $jsonCN delete_CkCert $cert exit } set privKey [new_CkPrivateKey] set success [CkCert_GetPrivateKey $cert $privKey] if {$success == 0} then { puts [CkCert_lastErrorText $cert] delete_CkCertStore $certStore delete_CkJsonObject $jsonCN delete_CkCert $cert delete_CkPrivateKey $privKey exit } set rsa [new_CkRsa] set success [CkRsa_UsePrivateKey $rsa $privKey] if {$success == 0} then { puts [CkRsa_lastErrorText $rsa] delete_CkCertStore $certStore delete_CkJsonObject $jsonCN delete_CkCert $cert delete_CkPrivateKey $privKey delete_CkRsa $rsa exit } # Encode the signature as a hex string CkRsa_put_EncodingMode $rsa "hex" set strData "This is the string to be signed." # Sign the string using the sha-1 hash algorithm. # Other valid choices are "sha-256", "md2" and "md5". set hexSig [CkRsa_signStringENC $rsa $strData "sha-1"] puts "$hexSig" puts "Success!" delete_CkCertStore $certStore delete_CkJsonObject $jsonCN delete_CkCert $cert delete_CkPrivateKey $privKey delete_CkRsa $rsa |
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