The FREE Cybersecurity Glossary by Thor Pedersen!

Cryptography: The science and practice of secure communication in the presence of third parties called adversaries. It involves creating written or generated codes that allow information to be kept secret. Cryptography encompasses various techniques such as encryption (scrambling data so it's unreadable without a key), decryption (making the scrambled data readable again with the correct key), hash functions (transforming data into fixed-size strings of characters), and digital signatures (verifying the sender's identity and the integrity of the data). It's essential for securing transactions, communications, and data in many fields, including finance, telecommunications, and national security.

Cryptology: The study of codes and ciphers, which encompasses both cryptography (creating codes and ciphers to keep information secure) and cryptanalysis (breaking them to access the information). Cryptology is a branch of mathematics and computer science that deals with the principles and techniques of translating readable data into secure forms and vice versa. It's fundamental to various aspects of information security, from secure online transactions to confidential communications and beyond.

Cryptoprocessor: A dedicated microprocessor designed specifically to handle cryptographic operations, such as creating digital signatures and managing keys securely. These processors are often embedded in hardware devices and provide an extra layer of security, protecting sensitive data even if the system's main processor is compromised. They are often found in applications requiring high levels of information security, such as ATM cards and smart cards.

Cryptosystem: A suite of cryptographic algorithms and protocols designed to secure communication and data by providing confidentiality, data integrity, authentication, and non-repudiation. A cryptosystem facilitates secure data storage and transmission in various IT applications.

CSPs (Cloud Service Providers): Companies that offer a range of cloud computing services, including infrastructure, platforms, or software that are accessible to customers via the Internet. CSPs manage and operate these services, which can be scaled to user demands and typically work on a subscription or pay-per-use model. They offer the benefits of cost savings, scalability, and accessibility without the need for customers to own, manage, or maintain the physical infrastructure.

CSR (Certificate Signing Request): A request for a certificate authority (CA) to issue a digital certificate for a specific entity or purpose. It is used in public key infrastructure (PKI) to authenticate the identity of a person or organization and establish trust for secure communication and transactions. Examples of CSRs include requesting an SSL/TLS certificate for a website or an email signing certificate for an individual.