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Function build_MIC_ICV

scapy/modules/krack/crypto.py:368–378  ·  view source on GitHub ↗

Compute and return the data with its MIC and ICV

(data, mic_key, source, dest)

Source from the content-addressed store, hash-verified

366
367
368def build_MIC_ICV(data, mic_key, source, dest):
369 """Compute and return the data with its MIC and ICV"""
370 # DATA - MIC(DA - SA - Priority=0 - 0 - 0 - 0 - DATA) - ICV
371 # 802.11i p.47
372
373 sa = mac2str(source) # Source MAC
374 da = mac2str(dest) # Dest MAC
375 MIC = michael(mic_key, da + sa + b"\x00" + b"\x00" * 3 + data)
376 ICV = pack("<I", crc32(data + MIC) & 0xFFFFFFFF)
377
378 return data + MIC + ICV

Callers 1

send_wpa_encMethod · 0.90

Calls 3

mac2strFunction · 0.90
michaelFunction · 0.85
crc32Function · 0.85

Tested by

no test coverage detected