md5 | 易学教程

Generating an MD5 Hash with a char[]

阅读更多关于 Generating an MD5 Hash with a char[]

How would one go about converting a char[] password obtained using this method: char[] password = passwordInputField.getPassword(); To an MD5 Hash? Normally I would use the method below, but getBytes is only compatible with Strings: MessageDigest md = MessageDigest.getInstance("MD5"); md.update(password.getBytes()); String hashedPass = new BigInteger(1, md.digest()).toString(16); Connor NOTE: The MD5 Hashing Algorithm should never be used for password storage, as it's hashes are easily cracked. However, I will use it for simplicity. The quick/easy/UNSECURE fix would be to convert the char

nodejs crypto module, does hash.update() store all input in memory

阅读更多关于 nodejs crypto module, does hash.update() store all input in memory

I have an API route that proxies a file upload from the browser/client to AWS S3. This API route attempts to stream the file as it is uploaded to avoid buffering the entire contents of the file in memory on the server. However, the route also attempts to calculate an MD5 checksum of the file's body. As each part of the file is chunked, the hash.update() method is invoked w/ the chunk. http://nodejs.org/api/crypto.html#crypto_hash_update_data_input_encoding var crypto = require('crypto'); var hash = crypto.createHash('md5'); function write (chunk) { // invoked many times as file is uploaded

Generate MD5 keys and save in a text file

阅读更多关于 Generate MD5 keys and save in a text file

问题 I'm using the MD5 command line utility which can be obtained from here http://www.fourmilab.ch/md5/ All i wish to do is to generate the MD5 keys of all the files in a folder and save them in a single file. However, I'm having difficulty to do so even for a single file. The DOS command that I'm using is this:- md5 -n -ooutput_test.txt -i"D:\Tickets&Issues\MD5\data1.csv" "D:\Tickets&Issues\MD5\output_test.csv" But i believe all it does is generate the key for the last file and save it in that

Can I md5(sha1(password))?

阅读更多关于 Can I md5(sha1(password))?

问题 I'm currently coding my own CMS and I'm at the state of password... I want to know if I can md5 a password then sha1 it after? Like: $password = md5(sha1(mysql_real_escape_string($_POST['passw']))); 回答1: You can md5 any data you'd like, even if it was hashed before. It will, however, only increase the risk of collisions because you're now working on a smaller dataset. What are you trying to achieve? 回答2: Yes you can. No it doesn't make sense. The security of chained hash functions is allways

Where to get MD5 hashes from a GitHub release?

阅读更多关于 Where to get MD5 hashes from a GitHub release?

I am looking to get the MD5 hash for a tar.gz GitHub release from here: https://github.com/jbeder/yaml-cpp/releases Would like to use it in my CMake. Does anyone know where I can get it? I could not find much of a solution through Google. If GitHub wanted to provide this information, I would expect it to be provided in the API. The GitHub API doesn't currently provide this information. If they did, I would expect it to be here: https://api.github.com/repos/jbeder/yaml-cpp/releases/latest More info: https://developer.github.com/v3/repos/releases/#list-assets-for-a-release If you'd like the

Is it possible to hash using MD5 in BigQuery?

阅读更多关于 Is it possible to hash using MD5 in BigQuery?

Does BigQuery have MD5() functionality? I know it has cityhash but I need MD5 specifically. thanks! Since this shows up in Google searches for "BigQuery MD5", for instances, it's worth pointing out that BigQuery supports the following hashing functions natively in standard SQL : MD5 SHA1 SHA256 SHA512 Jordan Tigani No, but bigquery does have some sha1-hash support. The SHA1() function returns bytes, but you can convert this to base64 by using TO_BASE64() which will give you a nice string or STRING() which will give you an ugly one: SELECT TO_BASE64(SHA1(corpus)) from [publicdata:samples

MD5 File Hashing - match Delphi output with PHP md5_file function

阅读更多关于 MD5 File Hashing - match Delphi output with PHP md5_file function

问题 I'm currently using this code for md5 hashing in Delphi 7: function MD5(const fileName : string) : string; var idmd5 : TIdHashMessageDigest5; fs : TFileStream; begin idmd5 := TIdHashMessageDigest5.Create; fs := TFileStream.Create(fileName, fmOpenRead OR fmShareDenyWrite) ; try result := idmd5.AsHex(idmd5.HashValue(fs)) ; finally fs.Free; idmd5.Free; end; end; and I'm trying to get the output the same as the PHP function md5_file() I've had a look around and common problems seem to be encoding

What is the probability of md5 collision if I pass in 2^32 sets of string?

阅读更多关于 What is the probability of md5 collision if I pass in 2^32 sets of string?

What is the probability of md5 collision if I pass in 2^32 sets of string? Can I say the answer is just 2^32/2^128 = 1/1.2621774e-29 as the length of bit of md5 hash is 128? This question is similar to the so-called "birthday paradox" . In probability theory, the birthday problem or birthday paradox concerns the probability that, in a set of n randomly chosen people, some pair of them will have the same birthday. By the pigeonhole principle, the probability reaches 100% when the number of people reaches 367 (since there are 366 possible birthdays, including February 29). However, 99%

How to convert password from md5 to laravel encryption method

阅读更多关于 How to convert password from md5 to laravel encryption method

问题 I want to re-develop my existing project to laravel. In my old system I store password into md5. Now how can I convert it according to laravel hash method for existing user. Is there any direct method to do it? 回答1: Is there any direct method to do it? No there's no direct method, but you could achieve that by overriding postLogin inside Auth/AuthController.php so it will check if the password is in md5 format then recrypt it with laravel hashing method else the user will connect normally,

Generating an MD5 Hash with a char[]

阅读更多关于 Generating an MD5 Hash with a char[]

问题 How would one go about converting a char[] password obtained using this method: char[] password = passwordInputField.getPassword(); To an MD5 Hash? Normally I would use the method below, but getBytes is only compatible with Strings: MessageDigest md = MessageDigest.getInstance("MD5"); md.update(password.getBytes()); String hashedPass = new BigInteger(1, md.digest()).toString(16); 回答1: NOTE: The MD5 Hashing Algorithm should never be used for password storage, as it's hashes are easily cracked.