The license for Unihan v1.1

[Jun Aruga]

Hello,

I would like to ask you about the license of the old version Unicode mapping data v1.1.

I am developing for Ruby package.
And there are files in the Ruby package with Unihan GB12345-90 (GB12345-80), GB2312-80 Unicode version 1.1. [1][2]
I would like to ask which license should be used for these files.

When I checked latest version Unihan.zip [3] of the Unicode mapping, and the ReadMe.txt [4], I found "Unicode Character Database (UCD)" was used.
However I checked the directory in version 1.1. [1], it seems that Unihan data has been disappeared from the web site directory. [5]
It seems that "Unicode license" had been used for that.

So, do you have any idea about which license I should use?

Thanks.


[1] https://github.com/ruby/ruby/tree/ruby_2_3/enc/trans/GB
    4 files in this directory.
[2] http://unicode.org/reports/tr38/
[3] http://www.unicode.org/Public/9.0.0/ucd/Unihan.zip
[4] http://www.unicode.org/Public/9.0.0/ucd/ReadMe.txt
    > # Unicode Character Database
[5] http://www.unicode.org/Public/1.1-Update/

Jun Aruga