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.

University of Colorado System
Skills you'll gain: Cryptography, Brute-force attacks
★ 4.5 (554) · Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Penetration Testing, Distributed Denial-Of-Service (DDoS) Attacks, MITRE ATT&CK Framework, Cryptography, Cyber Threat Intelligence, Cyber Threat Hunting, Cybersecurity, Cyber Security Assessment, Cyber Security Strategy, Threat Modeling, Security Testing, Secure Coding, Cyber Attacks, Cloud Infrastructure, Email Security, Cloud Platforms, Security Controls, Security Awareness, Cyber Risk, Security Strategy
★ 4.6 (297) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Authentications, Incident Response, MITRE ATT&CK Framework, Security Controls, Cryptography, Malware Protection, Cryptographic Protocols, Threat Modeling, Endpoint Security, Key Management, Authorization (Computing), Public Key Infrastructure, Vulnerability Assessments, Risk Management, Network Security, Application Security, Business Continuity Planning, Asset Management, Cloud Security, OSI Models
★ 4.7 (317) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Cloud Security, IT Security Architecture, Data Loss Prevention, Security Management, Identity and Access Management, Security Controls, Cyber Threat Intelligence, Security Strategy, Cybersecurity, Cyber Security Assessment, Security Information and Event Management (SIEM), Vulnerability Management, Incident Response, Cryptography, Zero Trust Network Access, Risk Management, Digital Forensics, Threat Detection, Public Key Infrastructure, Public Key Cryptography Standards (PKCS)
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: IT Security Architecture, Information Technology Architecture, Enterprise Architecture, Business Continuity Planning, Business Continuity, Cryptography, Security Controls, Risk Mitigation, Cybersecurity, Risk Management Framework, Cloud Security, Risk Management, Network Security, Cyber Risk, Control Objectives for Information and Related Technology (COBIT), Governance, Cloud Computing, Incident Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Public Key Infrastructure, Cloud Security, Hardening, Security Engineering, Cryptographic Protocols, Infrastructure Security, System Configuration, Cryptography, Endpoint Security, Mobile Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Incident Response, Network Security, Intrusion Detection and Prevention, Computer Security Incident Management, Command-Line Interface, Cryptography, Cyber Security Strategy, Open Web Application Security Project (OWASP), Application Security, Secure Coding, Cybersecurity, IT Security Architecture, Encryption, Vulnerability Assessments, Cyber Attacks, Multi-Factor Authentication, Information Systems Security, Cloud Security, Penetration Testing, Risk Management
★ 4.7 (71) · Intermediate · Specialization · 3 - 6 Months

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Cryptographic Protocols, Cybersecurity, Email Security, Firewall, Algorithms, Data Integrity
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Public Key Infrastructure, Cryptography, Encryption, Windows Servers, Cryptographic Protocols, Web Servers, Active Directory, Cybersecurity, System Configuration
Intermediate · Course · 1 - 3 Months

Pearson
Skills you'll gain: Public Key Infrastructure, Cryptography, Encryption, Data Security, Cryptographic Protocols, Data Integrity
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Cryptography, Cybersecurity, Network Security, Cyber Risk
★ 5 (8) · Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Blockchain, Cryptography, Encryption, Key Management, Cryptographic Protocols, Data Security, Quantum computing, Information Privacy, Algorithms
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.