[cryptography] The NSA and secure VoIP

Steven Bellovin smb at cs.columbia.edu
Thu Mar 1 22:27:04 EST 2012


http://www.scmagazine.com.au/News/292189,nsa-builds-android-phone-for-top-secret-calls.aspx
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








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