Delphi DLL

Load a Public Key from a String

Demonstrates the Chilkat PublicKey.LoadFromString method, which loads a public key from a string. The only argument is the string. Chilkat examines the content and recognizes PEM public keys, unencrypted PEM private keys (taking only the public portion), XML, JWK, and more.

Background: This is the forgiving text loader: rather than requiring you to know the exact format, it inspects whatever string you provide and figures it out. A useful convenience is that it accepts an unencrypted private key too and keeps only the public half — handy when you have a key pair but need just the public key. Use it whenever the textual format is uncertain or varies by source.

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Delphi DLL

var
success: Boolean;
pubKey: HCkPublicKey;
keyText: PWideChar;

begin
success := False;

//  Demonstrates the PublicKey.LoadFromString method, which loads a public key from a string.  The
//  only argument is the string.  Chilkat examines the content and recognizes PEM public keys,
//  unencrypted PEM private keys (using only the public portion), XML, JWK, and more.

pubKey := CkPublicKey_Create();

//  The PEM text of a public key.
keyText := '-----BEGIN PUBLIC KEY-----' + #10 + 'MIIBIjANBgkq...IDAQAB' + #10 + '-----END PUBLIC KEY-----';

success := CkPublicKey_LoadFromString(pubKey,keyText);
if (success = False) then
  begin
    Memo1.Lines.Add(CkPublicKey__lastErrorText(pubKey));
    Exit;
  end;

Memo1.Lines.Add('Loaded a ' + CkPublicKey__keyType(pubKey) + ' public key.');

CkPublicKey_Dispose(pubKey);