Exact hits
Package wpasupplicant

    squeeze (oldstable) (net): client support for WPA and WPA2 (IEEE 802.11i)
    0.6.10-2.1: amd64 armel i386 ia64 kfreebsd-amd64 kfreebsd-i386 mips mipsel powerpc s390 sparc
    wheezy (stable) (net): client support for WPA and WPA2 (IEEE 802.11i)
    1.0-3+b2: amd64 ia64 mips powerpc s390 s390x sparc
    1.0-3+b1: armel armhf i386 kfreebsd-amd64 kfreebsd-i386 mipsel
    jessie (testing) (net): client support for WPA and WPA2 (IEEE 802.11i)
    2.2-1: amd64 arm64 armel armhf i386 kfreebsd-amd64 kfreebsd-i386 mips mipsel powerpc ppc64el s390x
    sid (unstable) (net): client support for WPA and WPA2 (IEEE 802.11i)
    2.2-1: alpha amd64 arm64 armel armhf hppa i386 kfreebsd-amd64 kfreebsd-i386 mips mipsel powerpc ppc64 ppc64el s390x sparc x32
    1.1-1 [debports]: m68k sparc64
    1.0-3.1 [debports]: powerpcspe
    1.0-3 [debports]: sh4

Other hits
Package wpasupplicant-udeb

    wheezy (stable) (debian-installer): Client support for WPA and WPA2 (IEEE 802.11i)
    1.0-3+b2: amd64 ia64 mips powerpc s390 s390x sparc
    1.0-3+b1: armel armhf i386 mipsel
    jessie (testing) (debian-installer): Client support for WPA and WPA2 (IEEE 802.11i)
    2.2-1: amd64 arm64 armel armhf i386 mips mipsel powerpc ppc64el s390x
    sid (unstable) (debian-installer): Client support for WPA and WPA2 (IEEE 802.11i)
    2.2-1: alpha amd64 arm64 armel armhf hppa i386 mips mipsel powerpc ppc64 ppc64el s390x sparc x32
    1.1-1 [debports]: m68k sparc64
    1.0-3.1 [debports]: powerpcspe
    1.0-3 [debports]: sh4