Editing SEED (section)

{{Short description|Block cipher}}
{{other uses|Seed (disambiguation)}}
{{Infobox block cipher
| name          = SEED
| designers     = [[Korea Internet & Security Agency|KISA]]
| publish date  = 1998
| derived from  =
| derived to    = 
| related to    =
| key size      = 128 bits
| block size    = 128 bits
| structure     = Nested [[Feistel network]]
| rounds        = 16
| cryptanalysis = 2<sup>122</sup> against 8-rounds <ref>{{cite journal|last1=Sung|first1=Jaechul|title=Differential cryptanalysis of eight-round SEED|journal=Information Processing Letters|doi=10.1016/j.ipl.2011.02.004|volume=111|issue=10|pages=474–478|year=2011}}</ref>
}}

'''SEED''' is a [[block cipher]] developed by the [[Korea Internet & Security Agency|Korea Information Security Agency]] (KISA). It is used broadly throughout [[South Korea]]n industry, but seldom found elsewhere. It gained popularity in Korea because [[40-bit encryption]] was not considered strong enough, so the Korea Information Security Agency developed its own standard. However, this decision has historically limited the competition of [[web browser]]s in Korea, as no major SSL libraries or web browsers supported the SEED algorithm, requiring users to use an [[ActiveX]] control in [[Internet Explorer]] for secure web sites.<ref>{{cite web |author=Gen Kanai |date=2007-01-26 |title=The Cost of Monoculture |url=http://www.kanai.net/weblog/archive/2007/01/26/00h53m55s#003095 |access-date=2007-01-29 |url-status=dead |archive-url=https://web.archive.org/web/20070202022759/http://www.kanai.net/weblog/archive/2007/01/26/00h53m55s#003095 |archive-date=2007-02-02 }}</ref>

On April 1, 2015 the [[Ministry of Science, ICT and Future Planning]] (MSIP) announced its plan to remove the ActiveX dependency from at least 90 percent of the country's top 100 websites by 2017. Instead, [[HTML5]]-based technologies will be employed as they operate on many platforms, including mobile devices. Starting with the private sector, the ministry plans to expand this further to ultimately remove this dependency from public websites as well.<ref>{{cite web |author=Kang Yoon-seung |date=2015-04-01 |title=ICT ministry seeks to drop ActiveX in private sector|url=http://english.yonhapnews.co.kr/news/2015/04/01/0200000000AEN20150401002700320.html |access-date=2015-08-01 }}</ref>