You need MIT certificates to use this system.
You can get them from the MIT certificate server.

Here is some debugging info that might be useful for Sanjoy to have.

SSL_VERSION_INTERFACE mod_ssl/2.4.10
SSL_CIPHER_EXPORT false
CONTEXT_DOCUMENT_ROOT /afs/athena.mit.edu/user/s/a/sanjoy/web_scripts
SERVER_SOFTWARE Apache
CONTEXT_PREFIX 
SSL_SERVER_A_KEY rsaEncryption
SSL_SERVER_S_DN_ST Massachusetts
SERVER_SIGNATURE 
REQUEST_METHOD GET
SERVER_PROTOCOL HTTP/1.1
SSL_SERVER_S_DN CN=*.scripts.mit.edu,O=Massachusetts Institute of Technology,ST=Massachusetts,C=US
PATH /usr/local/bin:/usr/bin:/bin
SSL_CIPHER ECDHE-RSA-AES128-GCM-SHA256
SSL_SERVER_V_START Aug 18 00:00:00 2025 GMT
SSL_TLS_SNI sanjoy.scripts.mit.edu
SSL_SESSION_ID 984eb3b5e9f6f2859196af6fc616a83cf87fa49f3db451f0c0c8fee39ed198ec
SSL_CLIENT_VERIFY NONE
HTTP_USER_AGENT CCBot/2.0 (https://commoncrawl.org/faq/)
HTTP_CONNECTION Keep-Alive
SERVER_NAME sanjoy.scripts.mit.edu
REMOTE_ADDR 18.97.14.89
SSL_CIPHER_ALGKEYSIZE 128
SSL_SECURE_RENEG true
SSL_SERVER_I_DN_C US
SSL_COMPRESS_METHOD NULL
SSL_SERVER_M_VERSION 3
SSL_SERVER_I_DN_O Internet2
HOME /afs/athena.mit.edu/user/s/a/sanjoy
SERVER_ADDR 18.4.86.22
DOCUMENT_ROOT /afs/athena.mit.edu/user/s/a/sanjoy/web_scripts
GATEWAY_INTERFACE CGI/1.1
SERVER_PORT 444
SSL_VERSION_LIBRARY OpenSSL/1.0.1k-fips
JAVA_TOOL_OPTIONS -Xmx128M
SCRIPT_FILENAME /afs/athena.mit.edu/user/s/a/sanjoy/web_scripts/6.055/select_assign.py
SERVER_ADMIN scripts@mit.edu
SSL_SESSION_RESUMED Initial
SSL_SERVER_M_SERIAL D2892A27A55A5DD4DBF18A7B78D0A7A2
SSL_SERVER_A_SIG sha256WithRSAEncryption
HTTP_HOST sanjoy.scripts.mit.edu:444
SCRIPT_NAME /6.055/select_assign.py
HTTPS on
SSL_SERVER_S_DN_C US
REQUEST_URI /6.055/select_assign.py
HTTP_ACCEPT text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
SSL_SERVER_S_DN_O Massachusetts Institute of Technology
SSL_SERVER_S_DN_CN *.scripts.mit.edu
HTTP_IF_MODIFIED_SINCE Thu, 07 Aug 2025 10:43:54 GMT
SSL_SERVER_I_DN_CN InCommon RSA Server CA 2
REMOTE_PORT 36210
HTTP_ACCEPT_LANGUAGE en-US,en;q=0.5
REQUEST_SCHEME https
SSL_SERVER_V_END Aug 18 23:59:59 2026 GMT
SSL_PROTOCOL TLSv1.2
QUERY_STRING 
SSL_CIPHER_USEKEYSIZE 128
HTTP_ACCEPT_ENCODING br,gzip
SSL_SERVER_I_DN CN=InCommon RSA Server CA 2,O=Internet2,C=US