Re: [IPsec] Teaser for pitch talk at IETF 108

2020-07-30 Thread Valery Smyslov
Hi Scott, > > > Actually, it does add value from a crypto point of view, at least from a > > specific attack. In a multitarget attack, that is, an attack where we > > assume > > that the attacker has encrypted packets from a large number of SAs, and his > > goal is to recover the keys for any on

Re: [IPsec] Teaser for pitch talk at IETF 108

2020-07-30 Thread Scott Fluhrer (sfluhrer)
> -Original Message- > From: Valery Smyslov > Sent: Thursday, July 30, 2020 4:07 AM > To: Scott Fluhrer (sfluhrer) ; 'Michael Rossberg' > > Cc: 'ipsecme mailing list' > Subject: RE: [IPsec] Teaser for pitch talk at IETF 108 > > Hi Scott, > > > > > Actually, it does add value from a cry

Re: [IPsec] multiple windows need multiple SPIs

2020-07-30 Thread William Allen Simpson
On 7/24/20 2:28 PM, William Allen Simpson wrote: Therefore, I'd recommend that IPsec instead implement a block of related SPIs. Each SPI should have its unique session-key as usual, but all would have the same next protocol header and TCP/UDP port associated with the same flow. In the Photuris E

[IPsec] leading versus trailing ICV

2020-07-30 Thread William Allen Simpson
The comments thus far seem to be mixed. This is a perennial topic. We spent much time on it in PIPE/SIPP/IPv6. We agreed on leading for AH and trailing for ESP. When I wrote the KA9Q NOS code implementing Van Jacobson's packet buffers that eventually was ported to Linux by Alan Cox, the code kn