sha1 library

PHP Cryptographic function-sha1 () function Encryption First of all, let's introduce what is SHA1? SHA is the full name: Secure Hash Algorithm (secure hashing algorithm) is mainly applied to digital signature (digital Signature standard DSS) in the

OBJECTIVE-C implementation of MD5 and SHA1 algorithm is relatively simple, you can directly call the system's C/s + + shared library to implement the callMD5 is the message Digest algorithm 5 (Information-Digest algorithm 5), which is used to ensure

Ask, I if this transcoding, is not security will be a little higher. For example: SHA1 (MD5 ("password")) What I want to know is: 1 is that necessary? 2 If this is possible, the impact on performance will be very large or other what I can not think

usually, the encryption algorithm used is simple and efficient, the key is short, the encryption and decryption speed is fast, the decoding is extremely difficult. This article describes the use of Md5/sha1,dsa,desede/des,diffie-hellman. The

【ProgramIntroduction]Free Open-source file MD5 sha1 sha256 sha512 Verification Code Generation Tool v1.3 This is an interesting program. The same program is a graphical program and a command line program.Program role:Enter the path of a file and

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From: Http://hi.baidu.com/zhy65991/blog/item/0a663172b039321a8601b0e4.html Usually, the encryption algorithm used is relatively simple and efficient, the key is short, encryption and decryption speed, deciphering extremely difficult. This paper

1. MD5: MD5 is the Message-digest algorithm 5 (Information-Digest algorithm 5), which is used to ensure complete consistency of information transmission. is one of the most widely used hashing algorithms (also translated digest algorithm, hashing

Source author Wang HuiChapter 4 Basic Knowledge 1.1. Single-key password systemThe single-key cryptography system is a traditional encryption algorithm, which means that the sender and receiver of the information use the same key for encryption and

Using system; namespace mymethod {class computemd5andsha1 {// // calculate the MD5 value of the file /// /// to calculate MD5 value File Name and path // MD5 value hexadecimal string Public String md5file (string filename) {return hashfile