26 lines
997 B
PowerShell
26 lines
997 B
PowerShell
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[Console]::OutputEncoding = [Text.Encoding]::UTF8
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$lines = [IO.File]::ReadAllLines("$env:TEMP\opencode\ss123.tsv")
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$checked = 0; $allDesc = 0
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foreach ($ln in $lines) {
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$p = $ln -split "`t"
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if ($p.Count -lt 5 -or $p[4].Length -lt 100) { continue }
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$hex = $p[4] -replace '[^0-9a-fA-F]',''
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if ($hex.Length -ne 2168) { continue }
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$b = New-Object byte[] 1084
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for ($i = 0; $i -lt 1084; $i++) { $b[$i] = [Convert]::ToByte($hex.Substring($i*2,2),16) }
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if ($b[0x20] -ne 1 -or $b[0x21] -ne 1) { continue }
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$checked++
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if ($checked -gt 200) { break }
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$ok = $true
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foreach ($base in @(0x3C, 0x23C)) {
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for ($i = 0; $i -lt 511; $i++) {
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$d = ($b[$base+$i] - $b[$base+$i+1]) -band 0xFF
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if ($d -ne 1) { $ok = $false; break }
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}
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if (-not $ok) { break }
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}
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if ($ok) { $allDesc++ }
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}
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echo "检查帧: $checked, 全 512B 严格递减(mod256): $allDesc"
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# 若成立 → 数据=加密后的全零, rot 可从首字节推出
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