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The table of HA1 values must therefore be protected as securely as a file containing plaintext passwords. [12] Digest access authentication prevents the use of a strong password hash (such as bcrypt) when storing passwords (since either the password, or the digested username, realm and password must be recoverable)
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Lotus 1-2-3 spreadsheet (v4, v5) file 00 00 1A 00 05 10 04 ␀␀␚␀␅␊␄ 0 123 Lotus 1-2-3 spreadsheet (v9) file 00 00 03 F3 ␀␀␃ó: 0 Amiga Hunk executable file 00 00 49 49 58 50 52 (little-endian) 00 00 4D 4D 58 50 52 ␀␀IIXPR ␀␀MMXPR: 0 qxd Quark Express document 50 57 53 33: PWS3: 0 psafe3 Password Gorilla Password Database
[1] The simplest example of a challenge-response protocol is password authentication, where the challenge is asking for the password and the valid response is the correct password. An adversary who can eavesdrop on a password authentication can authenticate themselves by reusing the intercepted password. One solution is to issue multiple ...
Time-based one-time password (TOTP) is a computer algorithm that generates a one-time password (OTP) using the current time as a source of uniqueness. As an extension of the HMAC-based one-time password algorithm (HOTP), it has been adopted as Internet Engineering Task Force (IETF) standard RFC 6238 .
bcrypt has a maximum password length of 72 bytes. This maximum comes from the first operation of the ExpandKey function that uses XOR on the 18 4-byte subkeys (P) with the password: P 1..P 18 ← P 1..P 18 xor passwordBytes The password (which is UTF-8 encoded), is repeated until it is 72-bytes long. For example, a password of:
Simply generating a password at random does not ensure the password is a strong password, because it is possible, although highly unlikely, to generate an easily guessed or cracked password. In fact, there is no need at all for a password to have been produced by a perfectly random process: it just needs to be sufficiently difficult to guess.