Cryptography courses can help you learn encryption techniques, hashing algorithms, digital signatures, and secure communication protocols. You can build skills in threat modeling, cryptanalysis, and implementing security measures to protect sensitive data. Many courses introduce tools like OpenSSL, GnuPG, and various programming libraries that facilitate secure coding practices and help you apply cryptographic principles in real-world applications.

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

University of California, Davis
Skills you'll gain: Threat Modeling, Open Web Application Security Project (OWASP), Secure Coding, Cryptography, Authentications, Exploit development, Encryption, Penetration Testing, Security Strategy, Security Testing, Data Security, Application Security, Exploitation techniques, Software Design, C and C++, Linux Administration, System Design and Implementation, Java, Programming Principles, Cybersecurity
★ 4.5 (617) · Intermediate · Specialization · 3 - 6 Months

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

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

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

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

University of Maryland, College Park
Skills you'll gain: Hardware Design, Security Engineering, Computer Hardware, Hardware Architecture, Hardening, Computer Security, Threat Modeling, Threat Detection, Cybersecurity, Intrusion Detection and Prevention, Security Architecture Review, Application Specific Integrated Circuits, Cryptographic Protocols, Microarchitecture, Cryptography, Systems Design, Encryption, Exploitation techniques, Functional Design, Emerging Technologies
★ 4.3 (693) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Cryptographic Protocols, Blockchain, Business Continuity Planning, Cryptography, Encryption, Business Continuity, Disaster Recovery, Data Management, Digital Assets, Security Management, Vulnerability Assessments, Security Architecture Review, Cybersecurity, Enterprise Security, Network Security, Threat Modeling, Asset Protection, Vulnerability Management, Data Security, Secure Coding
★ 5 (10) · Beginner · Specialization · 1 - 3 Months

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

University of Colorado System
Skills you'll gain: Cryptography, Cybersecurity, Encryption, Public Key Cryptography Standards (PKCS), Brute-force attacks
★ 4.5 (429) · Beginner · Course · 1 - 4 Weeks

The Hong Kong University of Science and Technology
Skills you'll gain: Cryptography, Algorithms, Encryption, Theoretical Computer Science, Combinatorics, Mathematical Theory & Analysis, Arithmetic, Computational Thinking, Key Management, Applied Mathematics
Beginner · Course · 1 - 3 Months

Duke University
Skills you'll gain: Rust (Programming Language), Command-Line Interface, Build Tools, Encryption, Package and Software Management, Application Development, Cryptography, Software Engineering
Beginner · Guided Project · Less Than 2 Hours