[cryptography] The NSA and secure VoIP
smb at cs.columbia.edu
Thu Mar 1 22:27:04 EST 2012
makes for interesting reading. I was particularly intrigued by this:
Voice calls are encrypted twice in accordance with NSA policy,
using IPSEC and SRTP, meaning a failure requires “two independent
bad things to happen,” Salter said.
Margaret Salter is the head of the Information Assurance Directorate
of the NSA.
--Steve Bellovin, https://www.cs.columbia.edu/~smb
More information about the cryptography