krüptograafiliseks

krüptograafiliseks is the Estonian word for "cryptographic". It refers to the practice and study of techniques for secure communication in the presence of adversaries. Cryptography involves the processes of encryption and decryption, which transform readable data (plaintext) into an unreadable format (ciphertext) and back again. This ensures confidentiality, integrity, and authenticity of information.

The field of cryptography encompasses a wide range of algorithms and protocols. Symmetric-key cryptography uses the same secret key for both encryption and decryption, offering speed and efficiency for large amounts of data. Asymmetric-key cryptography, also known as public-key cryptography, utilizes a pair of keys: a public key for encryption and a private key for decryption. This is fundamental to many secure internet protocols like SSL/TLS.

Digital signatures are another crucial aspect of cryptography, providing authentication and non-repudiation. Hashing algorithms generate a fixed-size string of characters from an input, used for data integrity checks. Cryptography plays a vital role in securing online transactions, digital communications, blockchain technology, and protecting sensitive information in various digital systems. Its continuous evolution is driven by the need to counter increasingly sophisticated threats.