Tcl

Load an Encrypted Private Key from a PEM File

Demonstrates the Chilkat PrivateKey.LoadEncryptedPemFile method, which loads a private key from a file, using a password when the key is encrypted. The first argument is the file path and the second is the password.

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: The file-based encrypted loader — the natural choice for a .pem key stored with a passphrase, as most deployment keys are. It decrypts encrypted PKCS #8 PEM and also accepts unencrypted files, so it works whether or not the specific file is protected. Supply the passphrase from a secure source.

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Tcl


load ./chilkat.dll

set success 0

#  Demonstrates the PrivateKey.LoadEncryptedPemFile method, which loads a private key from a file,
#  using a password when the key is encrypted.  The 1st argument is the file path and the 2nd is
#  the password.

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"

set success [CkPrivateKey_LoadEncryptedPemFile $privKey "qa_data/private_encrypted.pem" $password]
if {$success == 0} then {
    puts [CkPrivateKey_lastErrorText $privKey]
    delete_CkPrivateKey $privKey
    exit
}

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

delete_CkPrivateKey $privKey