Hash (gb.hash)
This class provides standard hashing functions.
They are based on code provided by 
BusyBox.
This class is static.
Static methods
| Crc32 | Return the CRC32 hash of the Data string. | 
| Md5 | Return the MD5 hash of the Data string. | 
| Sha1 | Return the SHA1 hash of the Data string. | 
| Sha256 | Return the ShA256 hash of the Data string. | 
| Sha512 | Return the SHA512 hash of the Data string. |