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.

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Public Key Infrastructure, Cryptography, Cryptographic Protocols, Encryption, Authentications, Data Encryption Standard, Advanced Encryption Standard (AES), Key Management, Network Protocols, Email Security, Cybersecurity, Network Security, Security Software, Data Integrity, Multi-Factor Authentication, Firewall
Intermediate · Course · 1 - 3 Months

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

Macquarie University
Skills you'll gain: DevSecOps, Secure Coding, Cryptography, Application Security, Security Testing, IT Security Architecture, Cyber Threat Intelligence, Cyber Risk, Encryption, Network Security, DevOps, Cyber Attacks, Cybersecurity, CI/CD, Security Awareness, Cloud Security, Software Development, Security Controls, Artificial Intelligence and Machine Learning (AI/ML), Software Architecture
★ 4.7 (48) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Network Security, Cryptography, Firewall, Cybersecurity, Intrusion Detection and Prevention, Virtual Private Networks (VPN), Cloud Security, Cyber Attacks, Public Key Infrastructure, Human Factors (Security), Virtual Local Area Network (VLAN)
Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Data Encryption Standard, Advanced Encryption Standard (AES), Cryptography, Encryption, Algorithms
★ 4.6 (287) · Intermediate · Course · 1 - 3 Months

University of Leeds
Skills you'll gain: Cryptographic Protocols, Cryptography, Encryption, Data Security
★ 4.4 (16) · Beginner · Course · 1 - 4 Weeks
University of California, Irvine
Skills you'll gain: Blockchain, Cryptography, Transaction Processing, Authentications, Data Security, Information Privacy
★ 4.4 (54) · Beginner · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Threat Modeling, Open Web Application Security Project (OWASP), Secure Coding, Cryptography, Authentications, Encryption, Penetration Testing, Security Strategy, Data Security, Application Security, Exploitation techniques, Vulnerability Assessments, Code Review, Software Design, C and C++, Verification And Validation, Java, Programming Principles, Cybersecurity, C (Programming Language)
★ 4.5 (619) · Intermediate · Specialization · 3 - 6 Months

Princeton University
Skills you'll gain: Blockchain, Cryptography, Cryptographic Protocols, Key Management, Application Security, Network Protocols, Transaction Processing, Financial Regulation, Market Dynamics
★ 4.6 (3.1K) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Cryptography, Encryption, Cloud Security, Cyber Security Assessment, Cloud Computing, Data Security
Intermediate · Course · 1 - 4 Weeks
Skills you'll gain: IT Security Architecture, Information Systems Security, Network Security, Application Security, Cybersecurity, Security Awareness, Cyber Attacks, Encryption, Data Security, Cryptography, Security Strategy, Computer Security Awareness Training, Cyber Security Policies, Authorization (Computing), Firewall, Authentications, Identity and Access Management, Hardening, Malware Protection, Network Monitoring
★ 4.8 (26K) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Cryptography, Encryption, Python Programming, Cybersecurity, Analysis, Statistical Analysis, Computer Programming, User Interface (UI), Statistical Programming, Application Development, Design
★ 5 (16) · Mixed · 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.