This tool helps in transferring files and sending messages securely. MD5(Message Digest 5). Enter any string which you want to encrypt and this tool will convert that string into an MD5 hash, which is 32-digit hexadecimal number using a cryptographic hashing algorithm. Now you should send the generated MD5 hash to the recipient. After decrypting the MD5 hash it should yield the same results so that the integrity of such string or file is verified.