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.

Macquarie University
Skills you'll gain: Identity and Access Management, Cryptography, AWS Identity and Access Management (IAM), Data Security, Authentications, Threat Detection, Cybersecurity, Encryption, Network Security, Data Management, Azure Active Directory, Cyber Attacks, Cyber Security Strategy, Security Engineering, Security Management, Network Protocols, Okta, Cyber Risk, Computer Security, Security Awareness
★ 4.6 (25) · Intermediate · Specialization · 3 - 6 Months

University at Buffalo
Skills you'll gain: Blockchain, Cryptography, Transaction Processing, Cryptographic Protocols, Network Protocols, Payment Systems, Distributed Computing, Virtual Environment, Data Integrity, Virtual Machines, Algorithms, Verification And Validation, User Accounts
★ 4.6 (7.8K) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Operating System Administration, IT Service Management, Cloud Computing, Governance Risk Management and Compliance, Information Technology Infrastructure Library, Malware Protection, Service Management, Identity and Access Management, Linux, Linux Commands, Incident Response, Cybersecurity, Linux Administration, Cloud Computing Architecture, Network Security, Computer Security Incident Management, Dynamic Host Configuration Protocol (DHCP), General Networking, Network Infrastructure, Cyber Attacks
★ 4.6 (22K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Cryptography, Encryption, Python Programming, Cybersecurity, Analysis, Statistical Analysis, Scripting, User Interface (UI), Statistical Programming, UI Components, Application Development, Design
Mixed · Course · 1 - 4 Weeks

University of London
Skills you'll gain: Key Management, Security Management, Cyber Attacks, Cryptography, Cyber Security Policies, Cybersecurity, Cyber Risk, Encryption, ISO/IEC 27001, Threat Management, Risk Management Framework, Security Controls, Data Integrity
★ 4.7 (327) · Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Cryptography, Encryption, Application Development, Security Engineering, C and C++, C++ (Programming Language)
★ 4.2 (17) · Intermediate · Guided Project · Less Than 2 Hours

Princeton University
Skills you'll gain: Blockchain, Cryptography, Cryptographic Protocols, Encryption, Payment Systems, FinTech, Public Key Cryptography Standards (PKCS), Key Management, Application Security, Digital Assets, Network Protocols, Transaction Processing, Distributed Computing, Emerging Technologies, Scripting, Application Specific Integrated Circuits, Data Structures, Financial Policy, Financial Regulation, Market Dynamics
★ 4.6 (3.1K) · Mixed · Course · 1 - 3 Months

Total Seminars
Skills you'll gain: Cryptography, Public Key Infrastructure, Cryptographic Protocols, Encryption, Cybersecurity, Public Key Cryptography Standards (PKCS), Data Encryption Standard, Key Management, Network Security, Advanced Encryption Standard (AES), Authentications, Cyber Security Policies, Security Strategy, Data Integrity, Algorithms, Verification And Validation
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Cryptography, Encryption, Python Programming, Data Security
★ 4.6 (16) · Intermediate · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Quantum computing, Public Key Cryptography Standards (PKCS), Cryptography, Data Structures, Cryptographic Protocols, Algorithms, Encryption, Theoretical Computer Science, Computer Science, Programming Principles, Mathematical Software, Advanced Mathematics
★ 4.6 (70) · Advanced · Course · 1 - 4 Weeks

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

University of Colorado System
Skills you'll gain: Cryptography, Cryptographic Protocols, Data Integrity, Encryption, Authentications, Data Security, Data Encryption Standard, Advanced Encryption Standard (AES), Digital Communications
★ 4.5 (102) · Intermediate · 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.