(PureBasic) Get Base64 Public Key from Private Key

Demonstrates how to get the public key in base64 format from a private key.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkBinData.pb"
IncludeFile "CkPrivateKey.pb"
IncludeFile "CkPublicKey.pb"

Procedure ChilkatExample()

    success.i = 0

    ; Load a private key from base64.
    bd.i = CkBinData::ckCreate()
    If bd.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkBinData::ckAppendEncoded(bd,"MHQCA....n0Q==","base64")

    privKey.i = CkPrivateKey::ckCreate()
    If privKey.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkPrivateKey::ckLoadAnyFormat(privKey,bd,"")
    If success = 0
        Debug CkPrivateKey::ckLastErrorText(privKey)
        CkBinData::ckDispose(bd)
        CkPrivateKey::ckDispose(privKey)
        ProcedureReturn
    EndIf

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

    CkPrivateKey::ckToPublicKey(privKey,pubKey)

    pubKeyBase64.s = CkPublicKey::ckGetEncoded(pubKey,1,"base64")
    Debug pubKeyBase64


    CkBinData::ckDispose(bd)
    CkPrivateKey::ckDispose(privKey)
    CkPublicKey::ckDispose(pubKey)


    ProcedureReturn
EndProcedure