(Tcl) Generate RSA Public/Private Key Pair and Export to PEM

Tcl example code showing how to generate an RSA public/private key pair and export to PEM files.

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load ./chilkat.dll

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

set rsa [new_CkRsa]

# Generate a 1024-bit key.  Chilkat RSA supports
# key sizes ranging from 512 bits to 4096 bits.
set success [CkRsa_GenerateKey $rsa 1024]
if {$success != 1} then {
    puts [CkRsa_lastErrorText $rsa]
    delete_CkRsa $rsa
    exit
}

# Keys are exported in XML format:
set publicKeyXml [CkRsa_exportPublicKey $rsa]
puts "$publicKeyXml"

set privateKeyXml [CkRsa_exportPrivateKey $rsa]
puts "$privateKeyXml"

# Save the private key in PEM format:
set privKey [new_CkPrivateKey]

set success [CkPrivateKey_LoadXml $privKey $privateKeyXml]
set success [CkPrivateKey_SavePemFile $privKey "privateKey.pem"]

# Save the public key in PEM format:
set pubKey [new_CkPublicKey]

set success [CkPublicKey_LoadFromString $pubKey $publicKeyXml]
set success [CkPublicKey_SavePemFile $pubKey 0 "publicKey.pem"]

delete_CkRsa $rsa
delete_CkPrivateKey $privKey
delete_CkPublicKey $pubKey