[vc_row][vc_column width=”1\/2″][vc_custom_heading heading_semantic=”p” text_font=”font-213936″ text_size=”h5″ text_height=”fontheight-843833″]Kriativ-tech Volume 1, Issue 9, April 2018, Pages: xxx Received: Dec. 28, 2019; Accepted: Feb. 25, 2020. Published: Oct. 11, 2021.[\/vc_custom_heading][vc_custom_heading heading_semantic=”h3″ text_size=”h3″]Authors[\/vc_custom_heading][vc_custom_heading heading_semantic=”p” text_size=”h5″ uncode_shortcode_id=”200235″]<\/p>\n
Ant\u00f3nio Santos,\u00a0Assistant Professor at ISTEC <\/span><\/p>\n [\/vc_custom_heading][\/vc_column][vc_column width=”1\/2″][vc_custom_heading]Media[\/vc_custom_heading][vc_button button_color=”accent” border_animation=”btn-ripple-out” border_width=”0″ link=”url:http%3A%2F%2Fwww.kriativ-tech.com%2Fwp-content%2Fuploads%2F2022%2F06%2FAntonioSantosSecurityCaesarVigenere.pdf|target:_blank” button_color_type=”uncode-palette” uncode_shortcode_id=”378365″]PDF[\/vc_button][vc_custom_heading heading_semantic=”h4″ text_size=”h4″]To cite this article[\/vc_custom_heading][vc_custom_heading heading_semantic=”p” text_size=”h6″ uncode_shortcode_id=”100000″]Ant\u00f3nio Santos,\u00a0Security from Caesar to Vigen\u00e8re<\/b> Ant\u00f3nio Santos,\u00a0Assistant Professor at ISTEC
\nDOI: 10.31112\/kriativ-tech-2022-06-74[\/vc_custom_heading][\/vc_column][\/vc_row][vc_row row_height_percent=”0″ overlay_alpha=”50″ gutter_size=”1″ column_width_percent=”100″ shift_y=”0″ z_index=”0″][vc_column column_width_percent=”100″ gutter_size=”0″ override_padding=”yes” column_padding=”1″ overlay_alpha=”50″ shift_x=”0″ shift_y=”0″ shift_y_down=”0″ z_index=”0″ medium_width=”0″ mobile_width=”0″ width=”1\/1″][vc_custom_heading heading_semantic=”h3″ text_size=”h3″]Abstract[\/vc_custom_heading][vc_custom_heading heading_semantic=”p” text_font=”font-213936″ text_size=”h5″ text_height=”fontheight-843833″ uncode_shortcode_id=”265030″]Cryptography has accompanied the human being for centuries, starting with being used only by kings and emperors to communicate with their governors and military until now when its use is in all information transfers carried out digitally. The Caesar cipher was one of the first to appear and served for Roman emperors to communicate with their generals and provincial governors. It is a simple substitution number, and as such it has some limitations which, at the time it was used, were not relevant because of the illiteracy of the populations. While the Vigen\u00e8re cipher brought much more security, filling the vulnerabilities of the Caeser cipher, transforming the Caeser cipher into a polyalphabetic substitution cipher. In this study we will compare the figures: Caeser, Shift and Vigen\u00e8re; regarding your safety. It is also intended to make some modifications in order to improve and optimize the code without changing the original cipher.
\n[\/vc_custom_heading][vc_empty_space empty_h=”2″][vc_custom_heading heading_semantic=”h3″ text_size=”h3″]Keywords[\/vc_custom_heading][vc_custom_heading heading_semantic=”p” text_size=”h5″ uncode_shortcode_id=”124258″]Encryption, substitution method, Caesar cipher, Shift cipher, Vigen\u00e8re cipher.[\/vc_custom_heading][\/vc_column][\/vc_row][vc_row][vc_column column_width_percent=”100″ gutter_size=”0″ overlay_alpha=”50″ shift_x=”0″ shift_y=”0″ shift_y_down=”0″ z_index=”0″ medium_width=”0″ mobile_width=”0″ width=”1\/1″][vc_custom_heading heading_semantic=”h3″ text_size=”h3″]References[\/vc_custom_heading][vc_custom_heading heading_semantic=”p” text_font=”font-213936″ text_size=”h5″ text_height=”fontheight-843833″ uncode_shortcode_id=”318050″][1] Jain, A., Dedhia, R. and Patil, A. (2015) \u201cEnhancing the Security of Caesar Cipher Substitution Method using a Randomized Approach for more Secure Communication\u201d, International Journal of Computer Applications, Vol. 129 No.13, pp: 144-150,
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