![]() Having a strong password now and constantly changing it in the future will give one a good level of security. But how can one know if the website you are registering at, is using a hash or storing the password raw? The answer to this question is to use a strong unique password for every website, social network or application. With well-known chipers like md5, sha1, sha2, and so on, losing a password would not be so painful for the users. Data thiefs steal information with raw uncencrypted passwords, and it's amazing how big tech companies do not care even to chipher or hash the passwords of the users. The hacking of even well-known large websites like Facebook, LinkedIn, Twitter has been happening over the last years and not a new thing. One has to use unique long password on every site, so the compromisation of one website will not influence access to other sites. No actual key data, random data, or seed data is written to the log file.Using strong passwords in the nowadays age of total digitalization is a must. By default, log entries are appended to the local file "randpass.log". The RandPassGenerator tool performs extensive logging. Duplicates are eliminated and the entropy is computed based on the number of unique characters or words. Similarly, for passphrases the size of the usable dictionary defines the bits-per-word, and passphrase length is then computed to meet or exceed the requested strength (for the default dictionary and settings, roughly 16 bits-per-word). ![]() ![]() For passwords, the size of the character set used defines theīits-per-character, and password length is then computed to meet or exceed the requested strength (typically, this is somewhere around 5-6 bits per character). The strength mechanism implemented here is quite simple. If the tests don't pass, the tool reports failure and refuses to run. Simple statistical tests on DRBG output.Known-answer tests from the NIST Hash_DRBG verification suite test file.This implementation performs self-tests at every execution, so that users can be confident that no library problems have affected operation. This implementation uses the seed mechanism of the Java SecureRandom class for gathering entropy. In accordance with SP800-90, the DRBG is seeded with at least 888 bits of high quality entropy from entropy sources prior to any operation. The internal strength of the DRBG is 192 bits, according to NIST SP800-57, using the SHA-384 algorithm. It uses entropy, carefully gathered from system sources, to generate quality random output. The foundation of RandPassGenerator is an implementation of the NIST SP800-90 Hash DRBG. Java -jar PassGenerator.jar -pp 6 -pplen 7 -str 94 -rcc 1 ExamplesĮxample 1: generate 5 random passwords using the default mixed character set, at default strength of 160, saved into file GoodPasswords.dat Note that camel case can add entropy to the passphrase, but that the entropy strength does NOT take camel case into account because it varies too much. For a value of 1, only the first letter of each word might be transformed to uppercase, for 2, only first and second letter, etc. By default the value for this option is 0, which means that no uppercasing will be applied. Using -rcc N will apply uppercase at 50% chance to the first N letters of each passphrase word. The random camel case option (-rcc N) applies only when generating passphrases using the -pp option. The -pwcustom and -pwcs options may not be used together, at most one of them may appear for a given invocation of RandPassGenerator. Note that the set is de-duped, so even if the letter 'A' appears six times, it acts as if it appeared once. Non-printable characters like TAB or NEWLINE are ignored. Each printable character in the file is taken as a character for a custom password character set. If you want a fully custom character set, use the -pwcustom option. Normally, you should not use the -pwcs option, you should let RandPassGenerator use its default character set. "add a set of all digits", and anything else means "add a set of all punctuation marks". Means "add a character set of all lowercase letters", any uppercase letter means "add a set of all uppercase letter", any digit means Each character in the value represents a full set of characters. Note that the -pwcs option is a little strange. All messages are written to the standard error (stderr).ĭetailed log messages are appended to the specified log file - if the log file cannot be opened, then the tool will not run. The -out option can also be used to write the output to a file. The keys, passwords, or passphrases produced by RandPassGenerator will be written to the standard output (stdout), so they can easily be redirected to a file. v Īt least one of the options -pw, -pp, or -k must be supplied.
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