Light Untar limits files inside of the tar to ~8GB, and NSData representations to ~4GB

[iJoeCollins]

The historical limit of a file in a tar archive is 8GB. Light Untar for iOS is limited to files no greater than this. Light Untar also limits NSData representations to ~4GB.

For transparency sake, and per wikipedia

star in 2001 introduced a base-256 coding that is indicated by setting the high-order bit of the leftmost byte of a numeric field. GNU-tar and BSD-tar followed this idea.

This allows for file sizes much larger than 8GB.

Light Untar should check for this and return the correct decimal value.

In practice I don't believe there will be many instances where you'll have files that are larger than 8GB on iOS, but a more future proof solution would be nice.