Fwd: SecureSession protocol version 1.0 ( was Re: [Vm-dev] Re: SecureSession frame types)
Robert Withers <robert.w.withers@gmail.com> Tue, 22 December 2015 01:55 UTC
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Subject: Fwd: SecureSession protocol version 1.0 ( was Re: [Vm-dev] Re: SecureSession frame types)
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From: Robert Withers <robert.w.withers@gmail.com>
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I thought you may be interested in this. Thank you, Robert -------- Forwarded Message -------- Subject: SecureSession protocol version 1.0 ( was Re: [Vm-dev] Re: SecureSession frame types) Date: Mon, 21 Dec 2015 20:42:12 -0500 From: Robert Withers <robert.w.withers@gmail.com> To: Squeak Virtual Machine Development Discussion <vm-dev@lists.squeakfoundation.org>, Pharo Development List <pharo-dev@lists.pharo.org>, 5gangip@ietf.org I updated with all the feedback and here is a version 1.0 pdf specification. I appreciate any comments or suggestions you may have for this. https://www.dropbox.com/s/ywu9pjxrfvg1hys/FrameTypes.pdf?dl=0 Thank you, Robert On 12/20/2015 10:51 AM, Robert Withers wrote: > More, sorry. I left out the msgSize in the FEC spec. Let me reorder > the tagging, fit the 3 bytes of normal msgSpec into 4bytes and thusly... > > > ---Default non-FEC msgSpec + header + payload layout: > > - 8bytes (X) messageSpecification... > - > - (32bits...) > - 4bits tagging > - 6bits multicastSymbol > - 6bits messageVersion > - 2bits sanguinity > - 6bits headerType "Implies Y header size. NOTE: except for FEC > encodings" > - 8bits unused > - (32bits...) > - 4bytes messageSize (X+Y+Z) (Z bytes = (messageSize - headerSize(Y) - > 8bytes msgSpec (X = 8)) > - > - Ybytes message header > https://www.dropbox.com/s/ywu9pjxrfvg1hys/FrameTypes.pdf?dl=0 > - > - Zbytes message payload > > > > Special FEC coded 64bit <msgSpec + header> + payload layout, for 64bit > alignment: > > - 8bytes (X) message specification... > - > - (32bits...) > - 4bits tagging > - 6bits multicastSymbol > - 6bits messageVersion > - 2bits sanguinity > - 6bits FEC message type "NOTE: this means different layout" > - 2bits rsMode > - 6bits partial blockCount > - (32bits...) > - 4bits blockCount "NOTE: for 1MB encoded/982KB data - > blockCount * blockCodeBytes = Z" > - 20bits messageSize (X+Y+Z) (Z bytes = (messageSize - headerSize(Y) - > 8bytes msgSpec (X = 8)) "NOTE: this can specify 1MB data" > - 8bits primitivePolynomial spec (good for our current rsModes) > - > - Y = 0 > - > - Zbytes-sized payload > > Ok, that's what it is I think, this proposal. > > robert > > > > On 12/20/2015 10:33 AM, Robert Withers wrote: >> ---Default non-FEC msgSpec + header + payload layout: >> >> - 6bits multicastSymbol >> - 2bits sanguinity >> - 6bits messageVersion >> - 6bits headerType "NOTE: except for FEC encodings" >> - 4bytes messageSize >> - Xbytes header >> - >> - (messageSized - headerSize - 7specBytes) Bytes-sized payload >> >> >> Special FEC coded 64bit <msgSpec + header> + payload layout, for >> 64bit alignment: >> >> - (32bits...) >> - 6bits multicastSymbol >> - 2bits sanguinity >> - 6bits messageVersion >> - 6bits FEC message type "NOTE: this means different layout" >> - 2bits rsMode >> - (32bits...) >> - 10bits blockCount "NOTE: for 1MB encoded/982KB data" >> - 20bits messageSize "NOTE: this can specify 1MB data plus >> - 8bits primitivePolynomial spec (good for our current rsModes) >> - 4bits tagging >> - >> - (messageSized - headerSize - 4specBytes) OR (blockCount * rsMode's >> blockCodeBytes) Bytes-sized payload > -- . .. ... ^,^ robert Go Panthers!
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