c# - decompress deflate64 -


I have found a compressed string of bytes coming out of a database, which I decompressed to get the RTF file Required there over This is required.

I tried to use DotNetZip and it gave me 50% success ratio. Failure 50% gave me an unsupported encryption (0x09, deflate64) error, so I think my problem is that some compressed strings are compressed using deflets 64, while others are not. Why do not know.

I have found that zlib, DeflateStream and many free packages do not support deflate64 SevenZipSharp and KarnaCompression (port info-Zip to C #) claim to support, but both of them Using the libraries, I am getting errors.

SevenZipSharp gives me a "data error" exception, for which Google has no answer, and Karna compression gave me some random exceptions, "tried to load a program with a wrong format "Which I can not go back to the ear compression.

Is anyone an example of working to use the library Deflate64 encoded file? Or how to prove to me that my ZIP is not deflate64 encoded file and something else?

The payment of $ 700 for the Xceed License is the last option.

I had a similar problem for this.

My problem was that I was trying to call unzip32.dll 64-bit exe

Check this:


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