• basE91 \- binary to ASCII text encoding

$ wget http://downloads.sourceforge.net/base91/base91-0.6.0.tar.gz
$ sha1sum ./base91-0.6.0.tar.gz 
00cfd573ec8b3d0160dbf53e2c7a49b99a1aa720  ./base91-0.6.0.tar.gz
$ md5sum ./base91-0.6.0.tar.gz 
e227841d900cc463a162bd79775aeb54  ./base91-0.6.0.tar.gz

hash は https://sourceforge.net/projects/base91/files/basE91/0.6.0/ のview detailから確認できる

$ tar tvzf ./base91-0.6.0.tar.gz | lv
$ tar xf ./base91-0.6.0.tar.gz
$ cd base91-0.6.0
$ make

$ ls --block-size=1 -s ./base91
16384 ./base91
$ ./base91 ./base91 | wc -c
17340
$ base64 ./base91 | wc -c
19615
$ base32 ./base91 | wc -c
23538

$ ./base91 ./base91 | ./base91 -d | sha512sum 
6732ffd1ba21d419bb853278b5d65293db423b5fe5cb666e959407e3dff2613730464c0f3b3bf1c229abbbd1a7567b14fa19524a17f53f9efbfe0f8b3d8e4b4e  -
$ sha512sum ./base91
6732ffd1ba21d419bb853278b5d65293db423b5fe5cb666e959407e3dff2613730464c0f3b3bf1c229abbbd1a7567b14fa19524a17f53f9efbfe0f8b3d8e4b4e  ./base91