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It is a very simple tool to use and very helpful, since you can use "normal text" together with a "salt" to jump-bit construction of the same password that you can recover afterwards, or alternatively you may want to get a completely random password all the time.
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In the case of creating a completely random password you can use the md5pass. You can use one of md5 tools that has precisely this purpose. shorter than hex encoded (32 and 64 instead of 22 and 44) solutions such as md5sum/sha1sum, etc.Ĭredit to and especially the comments for my initial inspiration.the output can be easily selected and pasted or printed and retyped with minimal human error rates.22 and 44 characters pair quite nicely (just above even) common power of two breakpoints.doesn't "waste" much randomness (uses 89% of the random bits it receives vs ~24% for solutions directly piping to tr).it uses standard system tools - no extra binaries.
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the command is simple to type and memorable.22 characters gives me: log 2(57 22) > 128.32 bits of entropy.Generate 7 passwords (user names) of length 13: gpw 7 13 Three-letter combinations (trigraphs) taken from whatever dictionaries you This package generates pronounceable passwords. To generate random user names you can use gpw: generate more secure, completely random but hard to remember passwords): pwgen -s 13 7ĮAfycrPlM4cYv 4MRXmZmyIVNBp D8y71iqjG7Zq7 FQRHcserl4R8O yRCUtPtV3dsqV Generate 7 passwords of length 13: pwgen 13 7Įu7Teadiphaec giepahl3Oyaiy iecoo9Aetaib4 phaiChae6Eivi athoo3igee8CoĪs mentioned in the comments, you can avoid reducing entropy by using the -s argument (i.e. Remembering their position when memorizing only the word. Uppercase letters and digits are placed in a way that eases These passwords contain either only lowercase letters, or upperĪnd lower case mixed, or digits thrown in. Pwgen generates random, meaningless but pronounceable passwords. One day I'll add that as another option to MiscUtil.To generate a random password you can use pwgen: I have a StaticRandom class as part of MiscUtil but these days I'm leaning towards the thread-local version and passing it down the chain where appropriate. There are various ways around this - either create a subclass of Random which is thread-safe, or a set of static methods which do the same thing, or use thread-local variables to have one instance per thread. Now it's worth being aware that Random isn't thread-safe, so if you've got multiple threads you shouldn't just have a single instance of Random in a static variable without locking. Return GenerateString(SingleRandom, length) Public string GenerateStringNotThreadSafe(int length) Private static readonly Random SingleRandom = new Random() Public string GenerateString(Random rng, int length) 'Z' + 1 because the range is exclusive Try this: public char GenerateChar(Random rng) Additionally, if you use Random.Next(int, int) to make your life a lot easier.
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I'd also advise you not to concatenate strings like that in a loop, or even to create that many strings. Don't create a new instance of Random on each iteration - that's going to seed each instance with the current time in milliseconds, which obviously isn't likely to change between iterations.Ĭreate a single instance of Random, and pass it into the method.