The only correct answer in a security context is to terminate the application rather than fallback to a weak position that can potentially be exploited (usually by forcing that weaker position to happen).As I understand it, blowfish is generally seen a secure hashing algorithm, even for enterprise use (correct me if I'm wrong).Most Linux distributions come with conversion tools (collectively called a toolchain) for converting Doc Book files to presentation formats such as Postscript, HTML, PDF, EPUB, DVI, Post Script, La Te X, roff (the native man page format), HTMLHelp, Java Help and text. Multi-word first, middle and last names can be entered using the underscore as a word separator. Ascii Doc generates the following intrinsic attributes specifically for use in section markup templates: If no explicit section ID is specified an ID will be synthesised from the section title.
For bcrypt this will actually generate a 128 bit salt:*** Bike shed ***The last character in the 22 character salt is 2 bits.base64_encode() will have these four character "AQgw"bcrypt will have these four character ". The salt created will be 128 bits in length, padded to 132 bits and then expressed in 22 base64 characters.
Oeu"You don't need to do a full translate because they "round" to different characters:echo crypt('', '$2y$05$..................... (CRYPT_BLOWFISH only uses 128 bits for the salt, even though there are 132 bits in 22 base64 characters.
Instead of terminating, it continues to execute code.
The author's intentions of trying to work everywhere are admirable but, when it comes to application security, that stance actually backfires.
Because of this, I created functions to create and check secure password hashes using this algorithm, and using the (also deemed cryptographically secure) openssl_random_pseudo_bytes function to generate the salt.
To generate salt use mcrypt_create_iv() not mt_rand() because no matter how many times you call mt_rand() it will only have at most 32 bits of entropy. Lr IT7CFCBQow Low DP6Y.y$.....................e DOx4w Mcy7WU.k E21W6n Jfd Mims BE3V6y$.....................u MMcgjn OELIa6oyd Riv Pki Mr BG8.a Fp.
Which you will start seeing salt collisions after about 2^16 users. J2ih Dv8v Vf7QZ9Bsa Rr Kyqs2tkn55Yqy$..................... The crypt() function cant handle plus signs correctly.
mt_rand() is seeded poorly so it should happen sooner. "\n";echo crypt('', 'y$.....................g') . "\n";echo crypt('', 'y$.....................w') . So if for example you are using crypt in a login function, use urlencode on the password first to make sure that the login procedure can handle any character: It is intended for use on systems where mt_getrandmax() == 2147483647.
On systems where the crypt() function supports multiple hash types, the following constants are set to 0 or 1 depending on whether the given type is available: // let the salt be automatically generated/* You should pass the entire results of crypt() as the salt for comparing a password, to avoid problems when different hashing algorithms are used.