md5

问题 i dont even expect this problem, but it appears. I try to get md5 hash from string in swift. I search about that on SO and assume that i need to import library like that: #import <CommonCrypto/CommonCrypto.h> First of all compiler said that '#' is not okay. Then i removed and compiler said that '<' is not okay. I tried to figure out that and find recommendations to add folder named "CommonCrypto" and create a file named "module.map". I cant understand how to create file with this extension.

问题 I'm interested in optimizing the hashing of some large files (optimizing wall clock time). The I/O has been optimized well enough already and the I/O device (local SSD) is only tapped at about 25% of capacity, while one of the CPU cores is completely maxed-out. I have more cores available, and in the future will likely have even more cores. So far I've only been able to tap into more cores if I happen to need multiple hashes of the same file, say an MD5 AND a SHA256 at the same time. I can

问题 how I can calculate MD5 hash for a file that is open or used by a process? the files can be txt or and exe my current code return error for an exe because it is running here is my current code public static string GetMd5HashFromFile(string fileName) { FileStream file = new FileStream(fileName, FileMode.Open); MD5 md5 = new MD5CryptoServiceProvider(); byte[] retVal = md5.ComputeHash(file); file.Close(); StringBuilder sb = new StringBuilder(); for (int i = 0; i < retVal.Length; i++) { sb.Append

问题 import hashlib infile = open("P:\\r.mp3", 'r+b') data = infile.readline() hash = hashlib.md5() hash.update(data) hash_digest = hash.hexdigest() print(hash_digest) #hash_digest = hash_digest.encode('utf-8') print(hash_digest) with open("lt.txt", 'ab') as outfile: outfile.write(hash_digest + '\n') #error here with open("syncDB.txt", 'rb') as fg: for data in fg: print(data) outfile.write(hash_digest + '\n') TypeError: 'str' does not support the buffer interface How do I correct that and what do

问题 I have a a directory with a structure like so: . ├── Test.txt ├── Test1 │ ├── Test1.txt │ ├── Test1_copy.txt │ └── Test1a │ ├── Test1a.txt │ └── Test1a_copy.txt └── Test2 ├── Test2.txt ├── Test2_copy.txt └── Test2a ├── Test2a.txt └── Test2a_copy.txt I would like to create a bash script that makes a md5 checksum of every file in this directory. I want to be able to type the script name in the CLI and then the path to the directory I want to hash and have it work. I'm sure there are many ways

问题 I have a LAMP (PHP) website which is becoming popular. I played it safe by storing the user passwords as md5 hashes. But I now see that's not secure; I should have salted the md5 hash - because it's currently possible to decode unsalted md5 hashes using rainbow tables. What can I do? I don't want to make everyone type a new password. 回答1: You can do a "2 step hashing" instead of creating a hash in a single step. You could append each password hash to the username, and then hash it again. This

问题 I don't really need to import any data into my D7 build other than users. I have (by SQL) imported my user data however, the D7 password encryption method is now different. I'm not an expert by any stretch of the imagination and I've never used Drush, but I have come across this user_update_7000 code snippet found user.install (http://api.drupal.org/api/drupal/modules--user--user.install/function/user_update_7000/7) <?php require_once DRUPAL_ROOT . '/' . variable_get('password_inc', 'includes

问题 This question already has answers here : PHP expresses two different strings to be the same [duplicate] (6 answers) Closed 5 years ago . var_dump(md5('240610708') == md5('QNKCDZO')); Output: bool(true) Example: http://3v4l.org/2vrMi 回答1: md5('240610708') 's result is 0e462097431906509019562988736854 . md5('QNKCDZO') 's result is 0e830400451993494058024219903391 . They are both float number format strings ( numerical strings ), and if you use == in php, when compare a number with a string or

问题 I am trying to generate an MD5 hash with Qt. The hash I generate needs to be compatible with other standard MD5 hashes generated with other languages such as PHP. This code does not give me the desired results: QString encodedPass = QString(QCryptographicHash::hash(("myPassword"),QCryptographicHash::Md5)); The result is "Þ±SoHu÷Õ?!?¡¯×L" instead of "deb1536f480475f7d593219aa1afd74c". Can someone show me what I am doing wrong? 回答1: PHP gives it to you in hex, Qt in binary. Convert it to hex

问题 Given two different messages, A and B (maybe 20-80 characters of text, if size matters at all), what is the probability that the MD5 digest of A is the same as the MD5 digest of B and the SHA1 digest of A is the same as the SHA1 digest of B? That is: (MD5(A) == MD5(B)) && (SHA1(A) == SHA1(B)) Assume no malicious intent, i.e., that the messages are not selected with an aim of finding a clash. I just want to know the odds of this happening naturally. I'm thinking the chances are "astronomically