How to do an MD5 hash of one's email address? I don't know what MD5 or hash means. What's the definition of MD5, hash?
The MD5 hash is something like a fingerprint of the file and serves as an indicator of the overall integrity due to its properties which are:
- irreversibility - content can't be derived from checksum value alone
- repeatability - using the same algorithm will always produce the exact same hash value
- non-discoverability - a single bit difference will result in a completely different hash value
hash length - hash value length is determined by algorithm type, not by the file size
In other words: let's say you have a file and you want to make sure that when you send it to someone, it will arrive as an exact copy of your original file. So you will use hash value generator to create a hash value which you will send with the file. The person on the other side will download your file and use a similar generator to verify or to create a hash value for his copy of the file and then compare two hashes (one he created and one you sent him) if they match, and if they do it means that file you sent him wasn't anyhow corrupted in the process of transmission.
Hash values are usually included at the end of the filename enclosed with