Tcl

Generate new DSA Key from OpenSSL Parameters File

See more DSA Examples

Generates a new DSA key from an OpenSSL-created parameters file (DER and PEM formats supported). Examples of using OpenSSL to create parameter files are shown here:

openssl dsaparam -outform DER 1024 <  seedData.txt >dsaparam.der

openssl dsaparam 1024 < seedData.txt >dsaparam.pem

Tcl

load ./chilkat.dll

set success 0

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

set dsa [new_CkDsa]

set success [CkDsa_GenKeyFromParamsDerFile $dsa "dsaparam.der"]
if {$success != 1} then {
    puts [CkDsa_lastErrorText $dsa]
    delete_CkDsa $dsa
    exit
}

# To generate a key from PEM, call GenKeyFromParamsPem 
# (for an in-memory PEM string) or GenKeyFromParamsFilePem
# for a PEM file.

# The public and private keys may now be exported to PEM, DER,
# and XML formatted files.

# First for the public key...
# The public key never needs to be encrypted.

# Save the public key in PEM format:
set pemStr [CkDsa_toPublicPem $dsa]
# This example will not check the return value of SaveText...
set success [CkDsa_SaveText $dsa $pemStr "dsa_pub.pem"]

# Save the public key in DER format:
set success [CkDsa_ToPublicDerFile $dsa "dsa_pub.der"]

set bPublicOnly 1
# Save to XML
set xmlStr [CkDsa_toXml $dsa $bPublicOnly]
set success [CkDsa_SaveText $dsa $pemStr "dsa_pub.xml"]

# ------------------------------------
# Now for the private key....
# ------------------------------------

# Unencrypted PEM:
set pemStr [CkDsa_toPem $dsa]
set success [CkDsa_SaveText $dsa $pemStr "dsa_priv.pem"]

# Encrypted PEM:
set pemStr [CkDsa_toEncryptedPem $dsa "myPassword"]
set success [CkDsa_SaveText $dsa $pemStr "dsa_privEncrypted.pem"]

# DER:
set success [CkDsa_ToDerFile $dsa "dsa_priv.der"]

# XML:
set bPublicOnly 0
set xmlStr [CkDsa_toXml $dsa $bPublicOnly]
set success [CkDsa_SaveText $dsa $pemStr "dsa_priv.xml"]

puts "Finished!"

delete_CkDsa $dsa