Key derivation functions | Key management | Cryptography

Key derivation function

In cryptography, a key derivation function (KDF) is a cryptographic algorithm that derives one or more secret keys from a secret value such as a master key, a password, or a passphrase using a pseudorandom function (which typically uses a cryptographic hash function or block cipher). KDFs can be used to stretch keys into longer keys or to obtain keys of a required format, such as converting a group element that is the result of a Diffie–Hellman key exchange into a symmetric key for use with AES. Keyed cryptographic hash functions are popular examples of pseudorandom functions used for key derivation. (Wikipedia).

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From playlist Determining Inverse Functions

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From playlist Determining Inverse Functions

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Related pages

Key stretching | Argon2 | Scrypt | MD5 | PBKDF2 | Block cipher | Bcrypt | Cryptographic hash function | Crypt (C) | Diffie–Hellman key exchange | Key (cryptography) | Cryptography | IEEE P1363 | Password Hashing Competition | Lyra2 | Key-agreement protocol | SHA-2 | Brute-force attack | Salt (cryptography) | Passphrase | HMAC | Plaintext | Dictionary attack | HKDF | Iteration | Advanced Encryption Standard | Data Encryption Standard