(PureBasic) Find a Certificate by it's SHA-1 Thumbprint

See more Cert Store Examples

Note: This example requires Chilkat v10.1.2 or later.

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkCertStore.pb"
IncludeFile "CkCert.pb"
IncludeFile "CkJsonObject.pb"

Procedure ChilkatExample()

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

    thumbprint.s = "12c1dd8015f3f03f7b1fa619dc24e2493ca8b4b2"

    ; This opens the Current User certificate store on Windows,
    ; On MacOS and iOS it opens the default Keychain.
    bReadOnly.i = 1
    success.i = CkCertStore::ckOpenCurrentUserStore(certStore,bReadOnly)
    If success = 0
        Debug CkCertStore::ckLastErrorText(certStore)
        CkCertStore::ckDispose(certStore)
        ProcedureReturn
    EndIf

    ; Find the certificate having a specific SHA1 thumbprint.
    json.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkJsonObject::ckUpdateString(json,"thumbprint",thumbprint)

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

    success = CkCertStore::ckFindCert(certStore,json,cert)
    If success = 0
        Debug "Failed to find the certificate."
        CkCertStore::ckDispose(certStore)
        CkJsonObject::ckDispose(json)
        CkCert::ckDispose(cert)
        ProcedureReturn
    EndIf

    Debug "Found: " + CkCert::ckSubjectCN(cert)

    ; -------------------------------------------------------------------------------------
    ; Alternatively, one could load a certificate store object with certs from a PEM file,
    ; and do the same thing..
    certStorePem.i = CkCertStore::ckCreate()
    If certStorePem.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    success = CkCertStore::ckLoadPemFile(certStorePem,"pemFiles/certificates.pem")
    If success = 0
        Debug CkCertStore::ckLastErrorText(certStorePem)
        CkCertStore::ckDispose(certStore)
        CkJsonObject::ckDispose(json)
        CkCert::ckDispose(cert)
        CkCertStore::ckDispose(certStorePem)
        ProcedureReturn
    EndIf

    success = CkCertStore::ckFindCert(certStore,json,cert)
    If success = 0
        Debug "Failed to find the certificate."
        CkCertStore::ckDispose(certStore)
        CkJsonObject::ckDispose(json)
        CkCert::ckDispose(cert)
        CkCertStore::ckDispose(certStorePem)
        ProcedureReturn
    EndIf

    Debug "Found: " + CkCert::ckSubjectCN(cert)


    CkCertStore::ckDispose(certStore)
    CkJsonObject::ckDispose(json)
    CkCert::ckDispose(cert)
    CkCertStore::ckDispose(certStorePem)


    ProcedureReturn
EndProcedure