1. Motion to resolve comment 46
September 2003
doc.: IEEE /785r0
September 2003
Motion to resolve comment 46
Gary Spiess (Intermec Technologies)
TGk September 2003
Gary Spiess (Intermec)
Gary Spiess (Intermec)

2. September 2003
Comment 46
Comment – The "Transmitted as" comments in the test vectors need to reflect the change to TSC1 TSC0 in the IV.
Resolution – Check each of the "transmitted as" clauses to match the current byte ordering for the TSC.
Test vector #5:
PN = F0A410FC058C [transmitted as: 8C DefKeyID FC 10 A4 F0]
IV32 = F0A410FC
IV16 = 058C
RC4KEY= C F4 D F4 D9 AF 1A 64 F1 D
SWAPPED, AND WRONG!
RIGHT
Gary Spiess (Intermec)

3. September 2003
Draft references
Figure 23 from clause describes Phase 2 Key Mixing and clearly shows the WEPSeed order as
WEPSeed[0] = TSC1 WEPSeed[1] = (TSC1 | 0x20) & 0x7f WEPSeed[2] = TSC0
Figure 15 from clause describes TKIP MPDU formats and clearly shows the transmit order as
IV[0] = TSC1 IV[1] = WEPSeed[1] IV[2] = TSC0
In clause I.1.2 of test vectors, RC4KEY means WEPSeed, so we can consolidate the equations
RC4KEY[0] = IV[0] = TSC1 RC4KEY[1] = IV[1] = (TSC1 | 0x20) & 0x7f RC4KEY[2] = IV[2] = TSC0
Gary Spiess (Intermec)

4. Extracts from Figures 15 and 23
September 2003
Extracts from Figures 15 and 23
PHASE2_STEP3:
WEPSeed0  TSC1
WEPSeed1  (TSC1 | 0x20) & 0x7F
WEPSeed2  TSC0
WEPSeed3  Lo8((PPK5  Mk16(TK1,TK0)) >> 1)
for i = 0 to 5
WEPSeed4+(2i)  Lo8(PPKi)
WEPSeed5+(2i)  Hi8(PPKi)
end
return WEPSeed0…WEPSeed15
Gary Spiess (Intermec)

5. September 2003
Motion
Motion: For each TKIP test vector, change the order of the three octets following the “transmitted as:” to exactly match the three octets following the “RC4KEY:”
Gary Spiess (Intermec)