PureBasic

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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PureBasic

IncludeFile "CkPublicKey.pb"

Procedure ChilkatExample()

    success.i = 0

    ;  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.i = CkPublicKey::ckCreate()
    If pubKey.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ;  The PEM text of a public key.
    keyText.s = "-----BEGIN PUBLIC KEY-----" + Chr(10) + "MIIBIjANBgkq...IDAQAB" + Chr(10) + "-----END PUBLIC KEY-----"

    success = CkPublicKey::ckLoadFromString(pubKey,keyText)
    If success = 0
        Debug CkPublicKey::ckLastErrorText(pubKey)
        CkPublicKey::ckDispose(pubKey)
        ProcedureReturn
    EndIf

    Debug "Loaded a " + CkPublicKey::ckKeyType(pubKey) + " public key."


    CkPublicKey::ckDispose(pubKey)


    ProcedureReturn
EndProcedure