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.

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, Security Management, Vulnerability Assessments, Risk Management, Network Security, Application Security, Asset Management, Cloud Security, OSI Models
★ 4.7 (314) · Beginner · Specialization · 1 - 3 Months

University of Colorado System
Skills you'll gain: Cryptography, Public Key Infrastructure, Cybersecurity, Information Systems Security, Data Security, Firewall, Cyber Attacks, Data Encryption Standard, Penetration Testing, Network Security, Information Assurance, Encryption, Exploit development, Advanced Encryption Standard (AES), Cryptographic Protocols, Intrusion Detection and Prevention, Metasploit, Application Security, Security Testing, Cyber Security Policies
★ 4 (604) · Intermediate · Specialization · 3 - 6 Months

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, Computer Security, Threat Modeling, Security Testing, Secure Coding, Cyber Attacks, Cloud Infrastructure, Email Security, Security Controls, Security Awareness, Cyber Risk, Security Strategy
★ 4.6 (296) · Beginner · Specialization · 3 - 6 Months

Amazon Web Services
Skills you'll gain: Key Management, Cloud Security, Amazon Web Services, Data Security, Encryption, Data Migration, Security Controls, Cryptography, Public Key Infrastructure, Cryptographic Protocols, Endpoint Security, Data Storage Technologies
Mixed · Course · 1 - 4 Weeks
LearnQuest
Skills you'll gain: Blockchain, Key Management, Threat Modeling, Public Key Infrastructure, Security Controls, Cryptography, Cybersecurity, Data Security, Application Security, Network Security, Security Architecture Review, IT Security Architecture, Vulnerability Assessments, Encryption, Secure Coding, Cryptographic Protocols, Distributed Denial-Of-Service (DDoS) Attacks, Public Key Cryptography Standards (PKCS), Security Testing, Vulnerability Management
★ 4.6 (21) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Open Web Application Security Project (OWASP), Mobile Security, Network Security, Cybersecurity, Cryptography, Penetration Testing, Intrusion Detection and Prevention, Vulnerability Assessments, Wireless Networks, Encryption, Application Security, Exploitation techniques, Web Applications, Cloud Security, Internet Of Things
★ 4.9 (20) · Intermediate · Course · 1 - 3 Months

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

Skills you'll gain: Cryptography, Encryption, Cloud Security, Cryptographic Protocols, Cyber Security Assessment, Data Encryption Standard, Cloud Computing, Advanced Encryption Standard (AES), Data Security, Key Management, Data Loss Prevention, Public Key Infrastructure, Cloud Platforms
Intermediate · Course · 1 - 4 Weeks
University of California, Irvine
Skills you'll gain: Blockchain, Cryptography, Cryptographic Protocols, Encryption, Public Key Infrastructure, Key Management, Transaction Processing, Authentications, Data Security, Information Privacy, Data Integrity
★ 4.4 (54) · Beginner · Course · 1 - 4 Weeks

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

University of Colorado System
Skills you'll gain: Cryptography, Data Encryption Standard, Encryption, Advanced Encryption Standard (AES), Cryptographic Protocols, Application Security, Key Management, Public Key Cryptography Standards (PKCS), Secure Coding, Web Development, Email Security, PHP (Scripting Language), Authentications, Intrusion Detection and Prevention, Data Integrity, Algorithms, Command-Line Interface
★ 4.5 (102) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Cryptography, Cybersecurity, Network Security, Cryptographic Protocols, Data Security, Public Key Cryptography Standards (PKCS), Cyber Risk, Data Integrity, Transaction Processing
★ 5 (7) · Beginner · 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.