THotPDF.ValidatePDFMAC Method

Validerer frittstående eller signaturvedlagte PDF MAC-data og returnerer strukturert feildiagnostikk

Deklarasjon

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;

Bruksnotater

• 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 skiller en gyldig parset, men ikke tillatt digest- eller krypteringsmodus fra andre feil
• Resultatet rapporterer detektert digest, valgt profil, policy-beslutning og bruk av 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 skiller en digest-feil på den rå signaturverdien fra dokumentendring

Se ValidatePDFMACChain for å autentisere hver inkrementelle revisjon, eller PDF MAC-algoritme-smidighet og -politikkprofiler for profilsemantikk