Cryptography is a term used in computer science to describe secure information and communication techniques that use mathematical concepts and a set of rule-based calculations known as algorithms to transform messages in difficult-to-decipher ways. These deterministic algorithms are used for cryptographic key generation, digital signing, data privacy protection, internet browsing, and confidential communications like credit card transactions and email.
𝐓𝐡𝐞 𝐫𝐨𝐥𝐞 𝐨𝐟 𝐜𝐫𝐲𝐩𝐭𝐨𝐠𝐫𝐚𝐩𝐡𝐲 𝐢𝐧 𝐂𝐲𝐛𝐞𝐫𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲
- 𝐂𝐫𝐲𝐩𝐭𝐨𝐠𝐫𝐚𝐩𝐡𝐲 𝐬𝐚𝐟𝐞𝐠𝐮𝐚𝐫𝐝𝐬 𝐢𝐧𝐟𝐨𝐫𝐦𝐚𝐭𝐢𝐨𝐧 𝐜𝐨𝐧𝐟𝐢𝐝𝐞𝐧𝐭𝐢𝐚𝐥𝐢𝐭𝐲
Confidentiality is a key priority when it comes to cryptography. It means that only those with the necessary permissions can access the information transmitted and that this information is safeguarded against unauthorized access at all stages of its lifecycle.
Maintaining the privacy of those whose personal information is stored in enterprise systems necessitates confidentiality. As a result, encryption is the only way to ensure that your data is secure while being stored and transmitted.
Even when the transmission or storage medium has been compromised, the encrypted information is practically useless to unauthorized individuals without the right keys for decryption.
- 𝐈𝐭 𝐞𝐧𝐬𝐮𝐫𝐞𝐬 𝐭𝐡𝐞 𝐢𝐧𝐭𝐞𝐠𝐫𝐢𝐭𝐲 𝐨𝐟 𝐲𝐨𝐮𝐫 𝐝𝐚𝐭𝐚
In the security context, integrity refers to the accuracy of information systems and their data.
If a system has integrity, it means that its data is moved and processed in predictable ways. Even when the data is processed, it doesn’t change.
Using hashing algorithms and message digests, cryptography ensures the integrity of data. By providing codes and digital keys to ensure that what is received is genuine and from the intended sender, the receiver is assured that the data received has not been tampered with during transmission.
- 𝐈𝐭 𝐠𝐮𝐚𝐫𝐚𝐧𝐭𝐞𝐞𝐬 𝐭𝐡𝐚𝐭 𝐭𝐡𝐞 𝐬𝐞𝐧𝐝𝐞𝐫 𝐨𝐫 𝐫𝐞𝐜𝐞𝐢𝐯𝐞𝐫 𝐢𝐬 𝐜𝐨𝐫𝐫𝐞𝐜𝐭.
Cryptography also aids in ensuring the identity of both the sender and receiver, as well as the origin or destination of the information—the latter being the most important.
It is much easier for your teams to communicate securely once the source of the information has been identified.
Authentication is only possible via a special key exchange that’s used by the sender to prove his/her identity. A username and password are typically used, but other methods such as a smart card, retina scan, voice recognition, or fingerprint scan may also be used.
𝐂𝐫𝐲𝐩𝐭𝐨𝐠𝐫𝐚𝐩𝐡𝐲 𝐚𝐥𝐬𝐨 𝐞𝐧𝐬𝐮𝐫𝐞𝐬 𝐭𝐡𝐚𝐭 𝐝𝐚𝐭𝐚 𝐢𝐬 𝐚𝐯𝐚𝐢𝐥𝐚𝐛𝐥𝐞.
Cryptography also contributes to data availability by ensuring that individuals with the appropriate permissions can use systems and retrieve data in a dependable and timely manner. This ensures the dependability and accessibility of information systems.
- 𝐍𝐨𝐧-𝐫𝐞𝐩𝐮𝐝𝐢𝐚𝐭𝐢𝐨𝐧 𝐡𝐨𝐥𝐝𝐬 𝐛𝐨𝐭𝐡 𝐭𝐡𝐞 𝐬𝐞𝐧𝐝𝐞𝐫 𝐚𝐧𝐝 𝐭𝐡𝐞 𝐫𝐞𝐜𝐞𝐢𝐯𝐞𝐫 𝐚𝐜𝐜𝐨𝐮𝐧𝐭𝐚𝐛𝐥𝐞
Non-repudiation refers to the confirmation of a sent or received message. This principle ensures that the sender cannot deny having sent the data. It employs digital signatures to prevent the sender from disputing the data’s origin. It also ensures that the receiver does not deny receiving the message.
- 𝐌𝐚𝐢𝐧𝐭𝐚𝐢𝐧 𝐝𝐚𝐭𝐚 𝐬𝐞𝐜𝐮𝐫𝐢𝐭𝐲 𝐰𝐢𝐭𝐡 𝐬𝐭𝐫𝐨𝐧𝐠 𝐜𝐫𝐲𝐩𝐭𝐨𝐠𝐫𝐚𝐩𝐡𝐲 𝐬𝐭𝐫𝐚𝐭𝐞𝐠𝐢𝐞𝐬.
One of the most pressing concerns for businesses competing in today’s business environment is information security. When used correctly, cryptography can help you protect your intellectual property and keep it safe from cyber threats and threat actors.