Ruby

Load a Public Key from Base64 DER

Demonstrates the Chilkat PublicKey.LoadBase64 method, which loads a public key from standard Base64-encoded DER. The only argument is the Base64 string; whitespace within it is permitted.

Background: A public key in DER (binary) form is often carried as Base64 text so it can travel through channels that expect a string — a config value, a JSON field, a certificate export. This loader decodes that text and inspects the DER to determine the key type and structure automatically. It is the plain-Base64 counterpart to loading a full PEM block, which additionally has the BEGIN/END armor.

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Ruby

require 'chilkat'

success = false

#  Demonstrates the PublicKey.LoadBase64 method, which loads a public key from standard
#  Base64-encoded DER.  The only argument is the Base64 string (whitespace is allowed).

pubKey = Chilkat::CkPublicKey.new()

#  The Base64 of the DER-encoded public key.
keyStr = "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA...IDAQAB"

success = pubKey.LoadBase64(keyStr)
if (success == false)
    print pubKey.lastErrorText() + "\n";
    exit
end

print "Loaded a " + pubKey.keyType() + " public key." + "\n";