(Tcl) Generate an ECC Key

Demonstrates how to generate an ECC key.

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load ./chilkat.dll

# All Chilkat classes can be unlocked at once at the beginning of a program
# by calling UnlockBundle.  It requires a Bundle unlock code.
set chilkatGlob [new_CkGlobal]

set success [CkGlobal_UnlockBundle $chilkatGlob "Anything for 30-day trial."]
if {$success != 1} then {
    puts [CkGlobal_lastErrorText $chilkatGlob]
    delete_CkGlobal $chilkatGlob
    exit
}

# Create a Fortuna PRNG and seed it with system entropy.
# This will be our source of random data for generating the ECC private key.
set fortuna [new_CkPrng]

set entropy [CkPrng_getEntropy $fortuna 32 "base64"]
set success [CkPrng_AddEntropy $fortuna $entropy "base64"]

set ecc [new_CkEcc]

# Generate a random ECC private key on the secp256r1 curve.
# Chilkat also supports other curves, such as secp384r1, secp521r1, and secp256k1.

# privKey is a CkPrivateKey
set privKey [CkEcc_GenEccKey $ecc "secp256r1" $fortuna]
if {[CkEcc_get_LastMethodSuccess $ecc] != 1} then {
    puts [CkEcc_lastErrorText $ecc]
    delete_CkGlobal $chilkatGlob
    delete_CkPrng $fortuna
    delete_CkEcc $ecc
    exit
}

puts [CkPrivateKey_getXml $privKey]

# Save the private key to PKCS8 encrypted PEM
# (The private key can be saved in a variety of different formats. See the online reference documentation.)
set success [CkPrivateKey_SavePkcs8EncryptedPemFile $privKey "pemPassword" "myPemFiles/eccKey123.pem"]
if {$success != 1} then {
    puts [CkPrivateKey_lastErrorText $privKey]
}

delete_CkPrivateKey $privKey

puts "finished."

delete_CkGlobal $chilkatGlob
delete_CkPrng $fortuna
delete_CkEcc $ecc