Cryptography courses cover techniques for securing information and communication, focusing on encryption, decryption, hashing, and digital signatures. You’ll learn about symmetric and asymmetric key algorithms, protocols for secure data transmission, and how cryptographic methods protect privacy and integrity online.
Stanford Online
Skills you'll gain: Cryptography, Data Encryption Standard, Cryptographic Protocols, Encryption, Key Management, Advanced Encryption Standard (AES), Public Key Cryptography Standards (PKCS), Cybersecurity, Application Security, Authentications, Data Integrity, Algorithms, Arithmetic, Probability
★ 4.8 (4.5K) · Mixed · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Data Encryption Standard, Public Key Infrastructure, Cryptography, Cybersecurity, Key Management, Advanced Encryption Standard (AES), Encryption, Cryptographic Protocols, Public Key Cryptography Standards (PKCS), Brute-force attacks, Authentications, Arithmetic, Algorithms, Applied Mathematics, Probability, Computer Science
★ 4.6 (1K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Cryptography, Encryption, Cybersecurity, Identity and Access Management, OSI Models, Network Security, IT Security Architecture, Information Systems Security, Security Controls, Network Infrastructure, Computer Security, Data Encryption Standard, Infrastructure Security, Security Architecture Review, TCP/IP, Cryptographic Protocols, General Networking, Advanced Encryption Standard (AES), User Provisioning, Cyber Threat Intelligence
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Risk Management, Risk Management Framework, Disaster Recovery, Cryptography, Encryption, Risk Mitigation, Business Risk Management, DevSecOps, Incident Response, Cyber Operations, Application Security, Security Management, Cybersecurity, Identity and Access Management, Security Testing, OSI Models, Incident Management, Cyber Security Assessment, Cyber Risk, Security Awareness
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Public Key Infrastructure, Encryption, Cryptography, Cybersecurity, Data Security, Cryptographic Protocols, Advanced Encryption Standard (AES), Key Management, Data Encryption Standard, Blockchain, Algorithms, Authentications, Data Integrity
★ 4.9 (51) · Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Data Encryption Standard, Public Key Infrastructure, Cryptography, Brute-force attacks, Key Management, Advanced Encryption Standard (AES), Cryptographic Protocols, Encryption, Data Integrity, Cybersecurity, Computer Security, Information Assurance, Authentications, Data Security, Theoretical Computer Science, Threat Modeling, Communication Systems, Algorithms, Digital Communications
★ 4.6 (924) · Intermediate · Specialization · 3 - 6 Months

University of Maryland, College Park
Skills you'll gain: Cryptography, Encryption, Cryptographic Protocols, Key Management, Cybersecurity, Communication Systems, Digital Communications, Authentications, Data Integrity, Algorithms
★ 4.6 (1.3K) · Mixed · Course · 1 - 3 Months

University of California San Diego
Skills you'll gain: Cryptographic Protocols, Cryptography, Key Management, Encryption, Cybersecurity, Arithmetic, Algorithms, Python Programming
★ 4.5 (610) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cryptography, Encryption, Cybersecurity, Mathematical Theory & Analysis, Brute-force attacks, Arithmetic, Python Programming, Applied Mathematics, Programming Principles, File I/O, Computational Logic, Program Development, Analysis, Algorithms, Statistical Analysis, Analytical Skills, Debugging, Code Reusability, Scripting, Design
★ 4.9 (14) · Beginner · Specialization · 1 - 3 Months

ISC2
Skills you'll gain: Cryptography, Key Management, Public Key Infrastructure, Encryption, Cryptographic Protocols, Data Security, Data Encryption Standard, Public Key Cryptography Standards (PKCS), Cybersecurity, Advanced Encryption Standard (AES), Authentications, Brute-force attacks, Data Integrity, Algorithms
★ 4.8 (96) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cyber Threat Hunting, Cyber Threat Intelligence, Penetration Testing, Threat Detection, MITRE ATT&CK Framework, Cryptography, Security Testing, Application Security, Encryption, Cybersecurity, Vulnerability Scanning, Brute-force attacks, Vulnerability Assessments, AI Integrations, Exploitation techniques, Test Planning
★ 4.6 (2.5K) · Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Cryptography, Arithmetic, Algorithms, Applied Mathematics, Probability, Computer Science
★ 4.6 (335) · Beginner · Course · 1 - 4 Weeks
Start with your focus. If you're interested in network security, choose courses covering SSL/TLS, VPNs, and secure communications. If you want to implement cryptography in software development, look for courses that include coding examples and libraries like OpenSSL or PyCrypto. Compare courses based on their focus on theoretical concepts or practical applications.
Top-rated Cryptography courses offered by University of Colorado System on Coursera.
Earn a certificate in Cryptography from top universities and companies.
Top-rated beginner-friendly Cryptography courses with no prerequisites.
Cryptography is the practice and study of techniques for securing communication and information from adversaries. It involves creating codes and ciphers to protect data, ensuring that only authorized parties can access or modify it. The importance of cryptography cannot be overstated, especially in today's digital age where data breaches and cyber threats are prevalent. By safeguarding sensitive information, cryptography plays a crucial role in maintaining privacy, securing transactions, and establishing trust in various online activities.‎
A career in cryptography can lead to various job opportunities across multiple sectors. Positions such as cryptographic engineer, security analyst, and information security officer are common. Additionally, roles in government agencies, financial institutions, and tech companies often require expertise in cryptography. As organizations increasingly prioritize data security, the demand for professionals skilled in cryptography continues to grow, making it a promising field for those interested in cybersecurity and information protection.‎
To pursue a career in cryptography, several key skills are essential. A strong foundation in mathematics, particularly in areas like number theory and algebra, is crucial. Familiarity with programming languages such as Python or C++ is also important, as many cryptographic algorithms are implemented through code. Understanding computer networks, security protocols, and data structures will further enhance your capabilities in this field. Additionally, analytical thinking and problem-solving skills are vital for developing and assessing cryptographic systems.‎
There are numerous online courses available for those interested in learning about cryptography. Some of the best options include the Cryptography I course, which provides a comprehensive introduction to the subject, and the Applied Cryptography Specialization, which offers a deeper dive into practical applications. Other notable courses include An Introduction to Cryptography and Cyber Security: Applied Cryptography, which cater to various learning needs and levels.‎
Yes. You can start learning cryptography on Coursera for free in two ways:
If you want to keep learning, earn a certificate in cryptography, or unlock full course access after the preview or trial, you can upgrade or apply for financial aid.‎
Learning cryptography can be approached through a combination of online courses, textbooks, and practical exercises. Start by enrolling in introductory courses that cover the basics of cryptographic principles and techniques. Supplement your learning with textbooks that provide in-depth explanations and examples. Additionally, engaging in hands-on projects, such as implementing cryptographic algorithms or participating in coding challenges, can reinforce your understanding and application of cryptography in real-world scenarios.‎
Cryptography courses typically cover a range of topics essential for understanding the field. Common subjects include symmetric and asymmetric encryption, hashing functions, digital signatures, and key management. Courses may also explore cryptographic protocols, the mathematical foundations of cryptography, and applications in cybersecurity. By covering these topics, learners gain a comprehensive understanding of how cryptography protects information and supports secure communication.‎
For training and upskilling employees in cryptography, courses like the Cyber Security: Applied Cryptography are particularly beneficial. This course focuses on practical applications of cryptography in cybersecurity, making it ideal for professionals looking to enhance their skills. Additionally, the Applied Cryptography Specialization provides a structured learning path that can be valuable for organizations aiming to strengthen their workforce's cryptographic knowledge.‎