Script Function
The script is written in Perl to calculate the MD5 value of the file.
Script usage
After installing the operating system, the server calculates the MD5 values of all the binary files in the PATH variable, calculates the MD5 values of
MD5 Introduction
MD5 's full name, Message-digest algorithm 5, was developed by the MIT Computer Science Lab and RSA Data Security Inc in the early 90, through MD2, MD3 and MD4.
Message-digest refers to the hash transformation of a byte string
What is MD5, what is SHA-1, and how to verify these hashes. There is a single ISO document MD5,SHA-1 interrogation is not the original question, here, to do a final explanation of the above problems.
Let's take a look at some basic knowledge about
Lai Yonghao (http://laiyonghao.com)
Md5.digest Introduction
MD5 Algorithm (http://en.wikipedia.org/wiki/MD5) has been one of the most widely used information digest algorithm, commonly used to check errors, such as the command md5sum.
$ md5sum
Gets the MD5 value of the string:MD5 of the string "Hello":$ Echo-n ' Hello ' |md5sum|cut-d '-f1The resulting MD5 value:5d41402abc4b2a76b9719d911017c592Command explanation:Md5sum: Displays or checks the MD5 (128-bit) checksum, if there is no file
MD5 Algorithm Introduction:MD5 Full name is the paper Digest to the algorithm (Message-digest ALGORITHM5), the algorithm for arbitrary length of information is calculated bitwise, resulting in a binary length of 128 bits (hexadecimal length is 32
Here is a string 123456 for example, its MD5 ciphertext value is: e10adc3949ba59abbe56e057f20f883eHere, 1.txt is the file that needs to be encrypted.First, the method of encrypting strings and files with Oppnssl MD5.1. Oppnssl MD5 method of
Each copy of the same data (folder) can generate a unique MD5 checksum file, and we can determine whether the data is wrong by directly verifying the entire Data folder.1. generate the MD5 Checksum file method for the entire folder :Taking the Data
Read Catalogue
First, Base64 code
Second, MD5, SHA1, SHA256, SHA512, HMAC implementation
GitHub Code
It is said that today 520 is a good day, why I think of 502, 500, 404 these? Fortunately the server is OK!First, Base64
Recently made a mobile project, there are server and client types of projects, the client is to log on, the server will also return data, the server is developed in Java, the client to support multiple platforms (Android, iOS), while processing IOS
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.