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\r\n\r\n\u00a0Let\u2019s dive into the details of Grain v1<\/strong>, an intriguing stream cipher. Grain v1 belongs to a family of hardware-efficient synchronous stream ciphers, specifically designed for profile 2<\/strong> applications. Here are the key points about Grain v1:\r\n
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Background<\/strong>:\r\n
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Initially, Grain used an 80-bit key and a 64-bit initialization vector (IV). However, early cryptanalysis during the eSTREAM effort raised security concerns.<\/li>\r\n \t
The revised specification, Grain v1, introduced two versions: one for 80-bit keys (with a 64-bit IV) and another for 128-bit keys (with an 80-bit IV).<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t
Algorithm Features<\/strong>:\r\n
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Grain v1\u2019s elegance lies in its simplicity. It relies on two shift registers:\r\n
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The first register has linear feedback.<\/li>\r\n \t
The second register has non-linear feedback.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t
These registers, along with lightweight boolean functions, generate the keystream.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t
Cryptanalysis and Variants<\/strong>:\r\n
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Initial cryptanalysis led to the design of Grain v1, which became part of the eSTREAM portfolio.<\/li>\r\n \t
Recent research by Dinur and Shamir resulted in a new variant called Grain 128a<\/strong>, which provides authentication capabilities.<\/li>\r\n \t
Grain 128a retains elegance but sacrifices some speed and space compared to Grain v1.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t
Performance and Deployment<\/strong>:\r\n
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Hardware performance of all profile-2 eSTREAM candidates, including Grain, was studied.<\/li>\r\n \t
Grain\u2019s suitability depends on the application and message size.<\/li>\r\n \t
Niche, lightweight applications are considering Grain for deployment.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t
Patent-Free<\/strong>:\r\n
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The designers of Grain assert that it is patent-free.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ol>\r\n
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<\/div>\r\n<\/div>","protected":false},"excerpt":{"rendered":"
\u00a0Let\u2019s dive into the details of Grain v1, an intriguing stream cipher. Grain v1 belongs to a family of hardware-efficient synchronous stream ciphers, specifically designed for profile 2 applications. Here are the key points about Grain v1: Background: Initially, Grain used an 80-bit key and a 64-bit initialization vector (IV). However, early cryptanalysis during the […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"two_page_speed":[],"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8692","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/posts\/8692","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/comments?post=8692"}],"version-history":[{"count":1,"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/posts\/8692\/revisions"}],"predecessor-version":[{"id":8712,"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/posts\/8692\/revisions\/8712"}],"wp:attachment":[{"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/media?parent=8692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/categories?post=8692"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mql5.software\/wp-json\/wp\/v2\/tags?post=8692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}