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2. KeePass - Wikipedia

   en.wikipedia.org/wiki/KeePass

   Create master key. Access to the database is restricted by a master password or a key file. Both methods may be combined to create a "composite master key". If both methods are used, then both must be present to access the password database. KeePass version 2.x introduces a third option—dependency upon the current Windows user. [26]

3. Data Protection API - Wikipedia

   en.wikipedia.org/wiki/Data_Protection_API

   DPAPI security relies upon the Windows operating system's ability to protect the master key and RSA private keys from compromise, which in most attack scenarios is most highly reliant on the security of the end user's credentials. A main encryption/decryption key is derived from user's password by PBKDF2 function. [2]

4. Key derivation function - Wikipedia

   en.wikipedia.org/wiki/Key_derivation_function

   Example of a Key Derivation Function chain as used in the Signal Protocol.The output of one KDF function is the input to the next KDF function in the chain. 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 ...

5. PBKDF2 - Wikipedia

   en.wikipedia.org/wiki/PBKDF2

   The PBKDF2 key derivation function has five input parameters: [9] DK = PBKDF2(PRF, Password, Salt, c, dkLen) where: PRF is a pseudorandom function of two parameters with output length hLen (e.g., a keyed HMAC) Password is the master password from which a derived key is generated; Salt is a sequence of bits, known as a cryptographic salt

6. Master Password (algorithm) - Wikipedia

   en.wikipedia.org/wiki/Master_Password_(algorithm)

   Master Password is a type of algorithm first implemented by Maarten Billemont for creating unique passwords in a reproducible manner. It differs from traditional password managers in that the passwords are not stored on disk or in the cloud, but are regenerated every time from information entered by the user: Their name, a master password, and a unique identifier for the service the password ...

7. Password-based cryptography - Wikipedia

   en.wikipedia.org/wiki/Password-based_cryptography

   Some systems attempt to derive a cryptographic key directly from a password. However, such practice is generally ill-advised when there is a threat of brute-force attack. Techniques to mitigate such attack include passphrases and iterated (deliberately slow) password-based key derivation functions such as PBKDF2 (RFC 2898).

8. Key management - Wikipedia

   en.wikipedia.org/wiki/Key_management

   Likely the most common is that an encryption application manages keys for the user and depends on an access password to control use of the key. Likewise, in the case of smartphone keyless access platforms, they keep all identifying door information off mobile phones and servers and encrypt all data, where just like low-tech keys, users give ...

9. Linux Unified Key Setup - Wikipedia

   en.wikipedia.org/wiki/Linux_Unified_Key_Setup

   First, the block device is encrypted using a master key. This master key is encrypted with each active user key. [6] User keys are derived from passphrases, FIDO2 security keys, TPMs or smart cards. [7] [8] The multi-layer approach allows users to change their passphrase without re-encrypting the whole block device. Key slots can contain ...