WSN20401 Cryptography

Hiroshima University Syllabus

Japanese

Academic Year 2026Year School/Graduate School Graduate School of Advanced Science and Engineering (Master's Course) Division of Advanced Science and Engineering Informatics and Data Science Program

Lecture Code WSN20401 Subject Classification Specialized Education

Subject Name Cryptography

Subject Name
（Katakana）クリプトグラフィ

Subject Name in
English Cryptography

Instructor NAKANISHI TOORU

Instructor
(Katakana) ナカニシ　トオル

Campus Higashi-Hiroshima Semester/Term 1st-Year, Second Semester, 4Term

Days, Periods, and Classrooms (4T) Mon3-4,Weds3-4：ENG 102

Lesson Style Lecture Lesson Style
(More Details) Face-to-face

Face-to-face Lecture (see the details in Bb9)

Credits 2.0 Class Hours/Week 4 Language of Instruction E : English

Course Level 5 : Graduate Basic

Course Area（Area） 25 : Science and Technology

Course Area（Discipline） 02 : Information Science

Eligible Students

Keywords encryptions, authentications, information security, network security

Special Subject for Teacher Education 　 Special Subject 　

Class Status
within Educational
Program
(Applicable only to targeted subjects for undergraduate students)
Criterion referenced
Evaluation
(Applicable only to targeted subjects for undergraduate students)

Class Objectives
/Class Outline The target is to understand basics and applications in cryptography to protect the security in computer networks. In this class, symmetric-key encryptions, public-key encryptions, message authentications, and digital signatures are introduced as the basics, and PKI and SSL are introduced as the applications.

Class Schedule lesson1: Guidance
lesson2: Symmetric-key encryptions (1)
lesson3: Symmetric-key encryptions (2)
lesson4: Public-key encryptions (1)
lesson5: Public-key encryptions (2)
lesson6: Public-key encryptions (3)
lesson7: Public-key encryptions (4)
lesson8: Authentications (1)
lesson9: Authentications (2)
lesson10: Authentications (3)
lesson11: Security evaluations
lesson12: PKI
lesson13: Security protocols
lesson14: Network security
lesson15: Advanced topics

Text/Reference
Books,etc. Handouts
Reference: A. Menezes, P. Van Oorschot, S. Vanstone，“Handbook of Applied Cryptography”，CRC Press．

PC or AV used in
Class,etc. Handouts, Microsoft Teams, moodle

(More Details) Projector

Learning techniques to be incorporated Quizzes/ Quiz format, Post-class Report

Suggestions on
Preparation and
Review Review the exercises.

Requirements

Grading Method Evaluated on the quizzes, exercises, and reports.

Practical Experience

Summary of Practical Experience and Class Contents based on it

Message

Other

Please fill in the class improvement questionnaire which is carried out on all classes.
Instructors will reflect on your feedback and utilize the information for improving their teaching.

Academic Year	2026Year	School/Graduate School	Graduate School of Advanced Science and Engineering (Master's Course) Division of Advanced Science and Engineering Informatics and Data Science Program
Lecture Code	WSN20401	Subject Classification	Specialized Education
Subject Name	Cryptography
Subject Name （Katakana）	クリプトグラフィ
Subject Name in English	Cryptography
Instructor	NAKANISHI TOORU
Instructor (Katakana)	ナカニシ　トオル
Campus	Higashi-Hiroshima	Semester/Term	1st-Year, Second Semester, 4Term
Days, Periods, and Classrooms	(4T) Mon3-4,Weds3-4：ENG 102
Lesson Style	Lecture	Lesson Style (More Details)	Face-to-face
Face-to-face Lecture (see the details in Bb9)
Credits	2.0	Class Hours/Week	4	Language of Instruction	E : English
Course Level	5 : Graduate Basic
Course Area（Area）	25 : Science and Technology
Course Area（Discipline）	02 : Information Science
Eligible Students
Keywords	encryptions, authentications, information security, network security
Special Subject for Teacher Education		Special Subject
Class Status within Educational Program (Applicable only to targeted subjects for undergraduate students)
Criterion referenced Evaluation (Applicable only to targeted subjects for undergraduate students)
Class Objectives /Class Outline	The target is to understand basics and applications in cryptography to protect the security in computer networks. In this class, symmetric-key encryptions, public-key encryptions, message authentications, and digital signatures are introduced as the basics, and PKI and SSL are introduced as the applications.
Class Schedule	lesson1: Guidance lesson2: Symmetric-key encryptions (1) lesson3: Symmetric-key encryptions (2) lesson4: Public-key encryptions (1) lesson5: Public-key encryptions (2) lesson6: Public-key encryptions (3) lesson7: Public-key encryptions (4) lesson8: Authentications (1) lesson9: Authentications (2) lesson10: Authentications (3) lesson11: Security evaluations lesson12: PKI lesson13: Security protocols lesson14: Network security lesson15: Advanced topics
Text/Reference Books,etc.	Handouts Reference: A. Menezes, P. Van Oorschot, S. Vanstone，“Handbook of Applied Cryptography”，CRC Press．
PC or AV used in Class,etc.	Handouts, Microsoft Teams, moodle
(More Details)	Projector
Learning techniques to be incorporated	Quizzes/ Quiz format, Post-class Report
Suggestions on Preparation and Review	Review the exercises.
Requirements
Grading Method	Evaluated on the quizzes, exercises, and reports.
Practical Experience
Summary of Practical Experience and Class Contents based on it
Message
Other
Please fill in the class improvement questionnaire which is carried out on all classes. Instructors will reflect on your feedback and utilize the information for improving their teaching.

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