Tcl

Load a Private Key from a File (Any Format)

Demonstrates the Chilkat PrivateKey.LoadAnyFormatFile method, which loads a private key from a file by inspecting its contents. The first argument is the file path and the second is the password (used if the detected key is encrypted).

Note: The file path is relative to the application's current working directory. Absolute paths may also be used. Supply the path to your own key file.

Background: This is the most convenient loader of all — point it at a key file whose format you do not know and it detects and loads it, whether PKCS #1/#8, encrypted PKCS #8, PEM, JWK, XML, or a Microsoft format. It is the pragmatic default for applications that accept keys from users or varied sources; use a format-specific loader only when you want to enforce a particular expected format.

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Tcl


load ./chilkat.dll

set success 0

#  Demonstrates the PrivateKey.LoadAnyFormatFile method, which loads a private key from a file by
#  inspecting its contents.  The 1st argument is the file path and the 2nd is the password (used
#  if the detected key is encrypted).

set privKey [new_CkPrivateKey]

#  The key password is not hard-coded in a real application; obtain it from an interactive
#  prompt, environment variable, or a secrets vault.
set password "myKeyPassword"

#  This is the most convenient loader when the file's exact format is unknown: Chilkat inspects
#  the content and handles PKCS #1/#8, encrypted PKCS #8, PEM, JWK, XML, Microsoft formats, etc.
set success [CkPrivateKey_LoadAnyFormatFile $privKey "qa_data/some_private_key" $password]
if {$success == 0} then {
    puts [CkPrivateKey_lastErrorText $privKey]
    delete_CkPrivateKey $privKey
    exit
}

puts "Loaded a [CkPrivateKey_keyType $privKey] private key."

delete_CkPrivateKey $privKey