As it is, users must select and copy checksums one at a time. The program could use a single button method to copy all the checksums to a text file. Testers had only a single complaint about HashCalc. Calculating checksums using Hash Message Authentication Code takes only entering the text or hex key before dropping the data file. In addition to calculating file checksums, the app calculates checksums for text and hex strings. As soon as you let go of the file, the app immediate calculates and displays the checksum for any of the checked algorithms. Operating HashCalc is as easy as dragging a file to the program's interface. A checkbox next to each makes it easy to indicate whether the app will calculate the file checksum for that algorithm. Below that line are 13 common checksum algorithms. The display consists of a text box for the file path or text that is to be checked. The program's single page Help file adequately explains program functions, but expects users to be familiar with the field of checksums. HashCalc's simple dialog-size interface dispenses with glitz to plainly list input and results. If you download a file from the Internet, you take some risks that the file you downloaded is compromised or been altered or corrupted illegally by ill-intent cracker or hacker.This comprehensive checksum calculator couldn't get much easier to use. To protect a file and ensure that the program is correct, perform only what is advertised and nothing more, stable, well-written, and is actually the original or the same file that been put up for download by the author, we can compare the cryptographic hash function of the downloaded file with the hash value or checksum that been posted or declared by the developer for the file, software or application (other verification method been the installer been signed with digital certificate, which used by large corporations only due to cost). Two most commonly used hashes are MD5 and SHA1. How to Determine, Calculate or Computer the Hash or Checksum of a File on Your Local PC Hash function adds additional security properties to the file so that any unauthorized modified and altered file will not have the same digital hash fingerprint. There are several free downloadable tools and utilities that can be used to retrieve or get the hash or checksum value value (also known as message digest or digital fingerprint) of a file or software installer by computing or calculating the cryptographic hash function algorithms. Some the the freeware and shareware hash calculators are listed below. HashCalc is a free, fast and easy-to-use calculator that allows to compute message digests, checksums and HMACs for files, including software, applications, binaries, installers, documents, archives and etc, as well as for text and hex strings. It offers a choice of 13 of the most popular hash and checksum algorithms for calculations, and is implemented using commercial software SlavaSoft QuickHash Library from the same author.Support of 12 well-known and documented hash and checksum algorithms: MD2, MD4, MD5, SHA-1, SHA-2( 256, 384, 512), RIPEMD-160, PANAMA, TIGER, ADLER32, CRC32.Support of a custom hash algorithm (MD4-based) used in eDonkey and eMule applications.Support of 2 modes of calculations: HASH/CHECKSUM and HMAC.Support of 3 input data formats: files, text strings and hex strings.Calculates hash/checksum and HMAC for files of any type: music, audio, sound, video, image, icon, text, compression, etc., with the extensions.To use HashCalc, run and execute the program and the select the file you want HashCalc to calculate the hash checksum for you. HashTab Windows Shell Extension / Mac OS X Finder Plugin Select the appropriate file type and the hash algorithm such as MD5 and SHA1 that you want by ticking the check box.
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