| This is the Python version of the MD5 test program from the MD5 | |
| Internet Draft (Rivest and Dusse, The MD5 Message-Digest Algorithm, 10 | |
| July 1991). The file "foo" contains the string "abc" with no trailing | |
| newline. | |
| When called without arguments, it acts as a filter. When called with | |
| "-x", it executes a self-test, and the output should literally match | |
| the output given in the RFC. | |
| Code by Jan-Hein B\"uhrman after the original in C. |