National Addiction & HIV Data Archive Program
How secure is the data deposit form?The transmission of files from your computer to ICPSR over the Hypertext Transfer Protocol (HTTP) is encrypted using Secure Socket Layer (SSL) Version 3 with CAMELLIA_256_CBC, SHA1 for message authentication, and DHE_RSA for the key exchange mechanism. Upon receipt, ICPSR encrypts
the files using AES-256 encryption and writes them to a secure location on our web server. Once every minute, a process at ICPSR checks the web server for incoming files, moves them onto a server behind our firewall, and deletes the copy on the web server.