THotPDF.ValidatePDFMAC Method

Validerer selvstændige eller signaturtilknyttede PDF MAC-data og returnerer strukturerede fejldiagnoser

Deklaration

function ValidatePDFMAC(const FileName: TFileName; const Password: AnsiString; out ValidationInfo: THPDFPDFMACValidationInfo): boolean; overload;
function ValidatePDFMAC(const FileName: TFileName; const Password: AnsiString; const Options: THPDFPDFMACOptions; out ValidationInfo: THPDFPDFMACValidationInfo): boolean; overload;

Brugsnoter

• THPDFPDFMACStatus distinguishes authentication, modification, truncation, malformed-data, and unsupported-algorithm failures
• THPDFPDFMACValidationInfo reports coverage, algorithm, digest, and authentication decisions
• THPDFPDFMACLocation distinguishes standalone, signature-attached, and unknown locations
• No decrypted plaintext is exposed before authentication succeeds
• pmsPolicyRejected skelner en korrekt parset, men ikke tilladt digest- eller krypteringstilstand
• Resultatet rapporterer den registrerede digest, den valgte profil, politikafgørelsen og brugen af AES-256-GCM
• PermissionsAuthenticated confirms that encrypted /Perms matches /P, while MACRequiredByPermissions reports the authenticated PDF MAC requirement bit
• Attached validation resolves the active trailer SigObjRef, requires exactly one matching signature field, and verifies complete signature ByteRange coverage
• Location, SignatureObjectNumber, SignatureGeneration, FullFileCoverage, and SignatureDigestMatched report the verified attachment binding
• pmsSignatureBindingFailed skelner en fejl i digest af den rå signaturværdi fra en ændring af dokumentet

Se ValidatePDFMACChain for at autentificere hver inkrementel revision, eller PDF MAC-algoritmeagilitet og politikprofiler for profilernes semantik