7 terms
AES is the symmetric block cipher of modern cryptography that encrypts 128-bit blocks with 128-, 192- or 256-bit keys and secures most encrypted data today.
A cryptographic nonce is a value used only once with a given key or session, keeping ciphertexts distinct and making replayed messages detectable.
A digital signature is a cryptographic value that proves who signed a message and that the content has not changed since it was signed.
A hash function in cryptography maps data of any size to a fixed-length digest that is one-way and collision-resistant, used for integrity and signatures.
Key exchange in cryptography lets two parties agree on a shared secret key over an untrusted network without ever sending that key in readable form.
RSA is a public-key cryptography algorithm whose security rests on factoring large integers, used for digital signatures and, historically, key transport.
Symmetric encryption is the cryptography method that uses one shared secret key both to encrypt and to decrypt data, as in AES and ChaCha20.