In a correctly designed system, a plain password is not stored in the database. Instead, a hash of the password is stored. You are going to verify a password and you will need to use the same one-way function to calculate the hash and do a comparison.
Input: Two arguments. A string to be hashed and a hash algorithm as a string (unicode utf8).
Output: Hexadecimal hash for for input string using given algorithm as a string.
checkio('welcome', 'md5') == '40be4e59b9a2a2b5dffb918c0e86bhe3d7' checkio('happy spam', 'sha224') == '6e9dc3e01d57f1598c2b40ce59fc3527e698c77b15d0840ae96a8b5e'
algorithm in ("md5", "sha224", "sha256", "sha384", "sha512", "sha1")
0 ≤ len(hashed_string) ≤ 2**10