addSMimeDigest method
Add the Secure/Multipurpose Internet Mail Extensions digest
Implementation
void addSMimeDigest({required Uint8List digest, DateTime? signingTime}) {
_authenticatedAttributes.add(ASN1Sequence(elements: [
ASN1ObjectIdentifier([1, 2, 840, 113549, 1, 9, 3]), // ContentType
ASN1Set(elements: [
ASN1ObjectIdentifier([1, 2, 840, 113549, 1, 7, 1]), // Data
])
]));
signingTime ??= DateTime.now();
_authenticatedAttributes.add(ASN1Sequence(elements: [
ASN1ObjectIdentifier([1, 2, 840, 113549, 1, 9, 5]), // SigningTime
ASN1Set(elements: [
ASN1UtcTime(signingTime.toUtc()),
])
]));
_authenticatedAttributes.add(ASN1Sequence(elements: [
ASN1ObjectIdentifier([1, 2, 840, 113549, 1, 9, 4]), // MessageDigest
ASN1Set(elements: [
ASN1OctetString(octets: digest),
])
]));
}