CertificateCheckFileSignatureBuffer (Function)

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CertificateCheckFileSignatureBuffer (Function)

In french: CertificatVérifieFichierSignatureBuffer

Checks the correspondence between a signature and a file. The signature was stored as a Buffer variable.

Example

MonCertificat is Certificate

// Ouverture du sélecteur de certificat de Windows
MonCertificat = CertificateSelect()

// Annulation ou erreur
IF MonCertificat.Name = "" THEN
	RETURN
END

// Teste si le certificat sélectionné est valide pour signer
IF MonCertificat.ValidForSignature = False THEN
	Info("Le certificat sélectionné ne permet de pas de générer une signature.")
	RETURN
END

// Récupération du buffer contenant la signature
bufSignature is Buffer
bufSignature = CertificateSignFile(NomCompletFichier, MonCertificat)


// Vérification de la signature
SWITCH CertificateCheckFileSignatureBuffer(NomCompletFichier, bufSignature)
	CASE certificateOk : Info("Signature valide et certificat fiable")
	CASE certificateInvalid : Info("Signature ou certificat invalide")
	CASE certificateExpired : Info("Signature valide mais certificat expiré")
	CASE certificateUntrusted : Info("Signature valide mais racine de confiance "+  ...
		"du certificat non fiable")
END

Syntax

<Result> = CertificateCheckBufferSignatureFile(<File name> , <Signature buffer>)

<Result>: Integer

Result of signature check:
certificateExpired (3) Valid signature but expired certificate.
certificateInvalid (0) Invalid signature or certificate.
certificateOk (1) Trusted signature and certificate.
certificateUntrusted (4) Valid signature but untrusted certificate root.

<File name>: Character string

Full or relative name of the file on which the check must be performed.

<Signature buffer>: Buffer

Buffer containing the signature of the file. This buffer is returned by CertificateSignFile.

Remarks

Component: wd300std.dll