pkg/53068: unzip-6.0nb8 does not recognize password input while decrypting

[Makoto Fujiwara <makoto%if.t.u-tokyo.ac.jp@localhost>]

>Number:         53068
>Category:       pkg
>Synopsis:       unzip-6.0nb8 does not recognize password input while decrypting
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Mar 03 08:25:00 +0000 2018
>Originator:     Makoto Fujiwara
>Release:        NetBSD 8.99.12
>Organization:
         KINU Coorporation
>Environment:
System: NetBSD CF-SX2 8.99.12 NetBSD 8.99.12 (GENERIC-no-SYNAPTICS) #20: Mon Jan 29 20:23:34 JST 2018 root@CF-SX2:/export/O/sys/arch/amd64/compile/GENERIC-no-SYNAPTICS amd64
Architecture: x86_64
Machine: amd64

>Description:
        archivers/zip (zip-3.0nb) of pkgsrc does encrypt to the zip file, while
        unzip (unzip-6.0nb8) does not allow decrypting a file.

        I've checked FreeBSD ports of unzip (unzip-6.0_7) and found it works fine.
        (does not find any related patches there so far, but patches are more than
        pkgsrc)
>How-To-Repeat:
	Have install archivers/unzip (and zip for test)

     CF-SX2@makoto 14:31:33/180303(/tmp)% mkdir unzip
     CF-SX2@makoto 14:31:39/180303(/tmp)% cd unzip
     CF-SX2@makoto 14:31:41/180303(/tmp/unzip)% echo test test test > 1
     CF-SX2@makoto 14:31:48/180303(/tmp/unzip)% zip -e -o 1.zip 1
     Enter password: 
     Verify password: 
       adding: 1 (deflated 33%)
     CF-SX2@makoto 14:32:11/180303(/tmp/unzip)% ls -la
     total 32
     drwxr-xr-x  2 makoto  wheel    96 Mar  3 14:32 .
     drwxrwxrwt  7 root    wheel  1008 Mar  3 14:31 ..
     -rw-r--r--  1 makoto  wheel    15 Mar  3 14:31 1
     -rw-r--r--  1 makoto  wheel   190 Mar  3 14:31 1.zip
     CF-SX2@makoto 14:32:16/180303(/tmp/unzip)% unzip 1.zip
     Archive:  1.zip
     [1.zip] 1 password: 
     password incorrect--reenter:
     CF-SX2@makoto 14:32:35/180303(/tmp/unzip)%
>Fix:
     not known yet.

>Unformatted: