![]() ![]() If the password itself is too simple, however, then it may be possible to test all possible inputs and find a matching output (a brute-force attack) – perhaps aided by a dictionary or suitable look-up list, which for MD5 is readily available. The MD5 calculations used in HTTP digest authentication is intended to be " one way", meaning that it should be difficult to determine the original input when only the output is known. ![]() Impact of MD5 security on digest authentication However, support for "SHA-512-256", "SHA-512-256-sess" algorithms and username hashing is still lacking. As of October 2021, Firefox 93 officially supports "SHA-256" and "SHA-256-sess" algorithms for digest authentication. However, as of July 2021, none of popular browsers, including Firefox and Chrome, support SHA-256 as the hash function. ![]() The encoding is equivalent to "MD5" and "MD5-sess" algorithms, with MD5 hashing function replaced with SHA-256 and SHA-512-256. The above shows that when qop is not specified, the simpler RFC 2069 standard is followed. ![]()
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