internal static ZipIOCentralDirectoryDigitalSignature ParseRecord(BinaryReader reader)
{
// this record is optional, so let's check for presence of signature rightaway
//let's ensure we have at least enough data to cover _fixedMinimalRecordSize bytes of signature
if ((reader.BaseStream.Length - reader.BaseStream.Position) < _fixedMinimalRecordSize)
{
return(null);
}
UInt32 signatureValue = reader.ReadUInt32();
if (signatureValue != _signatureConstant)
{
return(null);
}
//at this point we can assume that Digital Signature Record is there
// Convention is to throw
throw new NotSupportedException(SR.Get(SRID.ZipNotSupportedSignedArchive));
// disable creation/parsing of zip archive digital signatures
#if ArchiveSignaturesEnabled
ZipIOCentralDirectoryDigitalSignature record = new ZipIOCentralDirectoryDigitalSignature();
record._signature = signatureValue;
record._sizeOfData = reader.ReadUInt16();
record._signatureData = reader.ReadBytes(record._sizeOfData);
record.Validate();
return(record);
#endif
}
internal static ZipIOCentralDirectoryDigitalSignature ParseRecord(BinaryReader reader)
{
// this record is optional, so let's check for presence of signature rightaway
//let's ensure we have at least enough data to cover _fixedMinimalRecordSize bytes of signature
if ((reader.BaseStream.Length - reader.BaseStream.Position) < _fixedMinimalRecordSize)
{
return null;
}
UInt32 signatureValue = reader.ReadUInt32();
if (signatureValue != _signatureConstant)
{
return null;
}
//at this point we can assume that Digital Signature Record is there
// Convention is to throw
throw new NotSupportedException(SR.Get(SRID.ZipNotSupportedSignedArchive));
// Zeus PS 3: disable creation/parsing of zip archive digital signatures
#if ArchiveSignaturesEnabled
ZipIOCentralDirectoryDigitalSignature record = new ZipIOCentralDirectoryDigitalSignature ();
record._signature = signatureValue;
record._sizeOfData = reader.ReadUInt16();
record._signatureData = reader.ReadBytes(record._sizeOfData );
record.Validate();
return record;
#endif
}
