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.

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

Institut Mines-Télécom
Skills you'll gain: Blockchain, Cryptography, Cryptographic Protocols, Encryption, Public Key Infrastructure, Public Key Cryptography Standards (PKCS), Payment Systems, FinTech, Transaction Processing, Authentications, Data Security, Business Logic, Data Structures, Data Integrity, Algorithms, Verification And Validation
Intermediate · Course · 1 - 3 Months

Infosec
Skills you'll gain: Blockchain, Network Security, Distributed Denial-Of-Service (DDoS) Attacks, Cryptography, Cryptographic Protocols, Secure Coding, Encryption, Vulnerability Assessments, Scalability, Distributed Computing, Exploitation techniques, Transaction Processing, Algorithms
★ 4.6 (86) · Beginner · Course · 1 - 3 Months

University of California, Davis
Skills you'll gain: Threat Modeling, Secure Coding, Cryptography, Open Web Application Security Project (OWASP), Encryption, Application Security, Vulnerability Assessments, Data Security, Exploitation techniques, Security Controls, Authentications, Vulnerability Management, Data Validation
★ 4.7 (178) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: iOS Development, Secure Coding, Encryption, Network Security, Swift Programming, Mobile Security, Application Security, Data Persistence, Key Management, Data Security, Cryptography, Data Storage
Mixed · Course · 1 - 4 Weeks
University of California, Irvine
Skills you'll gain: Blockchain, Cryptography, Data Integrity, Encryption, Cryptographic Protocols, FinTech, Transaction Processing, Data Structures, Verification And Validation
★ 4.8 (26) · Beginner · Course · 1 - 4 Weeks

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

Skills you'll gain: IT Security Architecture, Security Controls, Cryptography, Security Engineering, Application Security, Vulnerability Assessments, Information Systems Security, Cryptographic Protocols, Vulnerability Management, Encryption, Cybersecurity, Infrastructure Security, Computer Security, Public Key Infrastructure, Cyber Security Assessment, Data Integrity
★ 4.9 (7) · Intermediate · Course · 1 - 4 Weeks

Association of International Certified Professional Accountants
Skills you'll gain: Digital Assets, Blockchain, Asset Protection, Data Security, Cryptography, Security Management, Cybersecurity, Security Awareness, Key Management, Security Controls, Securities (Finance), Multi-Factor Authentication, Authentications, Securities Trading, Audit Working Papers, Financial Market, Market Data, Financial Regulations, Regulatory Compliance, Financial Accounting
★ 4.7 (93) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cryptography, Cybersecurity, Network Security, Cryptographic Protocols, Cyber Attacks, Encryption, IT Security Architecture, Identity and Access Management, Threat Management, Threat Detection, Firewall, Key Management, Security Management, Infrastructure Security, Security Controls, Network Planning And Design, Authorization (Computing), Public Key Infrastructure, Authentications, Risk Management Framework
★ 4.6 (9) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Virtual Machines, Blockchain, Identity and Access Management, Cryptographic Protocols, Transaction Processing, Virtualization and Virtual Machines, Google Cloud Platform, Cryptography, Authentications, Cloud Security
Advanced · Project · Less Than 2 Hours

Kennesaw State University
Skills you'll gain: Cybersecurity, IT Security Architecture, Network Security, Disaster Recovery, Application Security, Cyber Operations, Cryptography, Cyber Security Assessment, Information Systems Security, Cyber Risk, Encryption, Secure Coding, Systems Development Life Cycle, Security Controls, Cyber Governance, Security Management, Cyber Security Policies, Infrastructure Security, Security Awareness, Cryptographic Protocols
★ 4.4 (2.4K) · Beginner · Course · 1 - 3 Months