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In new Сhrome version 37.0.2062.120 m appeared new Secure Preferences file, how make modification preferences now?

Secure Preferences file:

{
"extensions": {
"settings": {
}
},
"protection": {
"macs": {
"browser": {
"show_home_button": "6F07A285FE2C96A4DFF2CA4CA5783179E9C811CBC11DCDDBFB134EDCF6A3744C"
},
"extensions": {
"aaaaaaaaaabbbbbbbbbbcccccccccc": "11D619FC1E8DD99DF100E17B1D95F64D3C46BF6A5538D6031C80608720D9BDAD",
}
}
}
}

What is this protect mac code "11D619FC1E8DD99DF100E17B1D95F64D3C46BF6A5538D6031C80608720D9BDAD"? Is it hash code? How correct generate this code?

SLDEV
  • 31

1 Answers1

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11D619FC1E8DD99DF100E17B1D95F64D3C46BF6A5538D6031C80608720D9BDAD is a lattice based hash called SWIFFT. You can easily revert it and create your own by doing a fast fourier transform on it, find the pointwise product of the range when you interpret the extension id as a multiple-precision integer.

I wrote a tool to do this, but it requires the use of the decoherence library, which is propietary, and you wouldn't be able to use it. But if you want, I can create another hash for your extension id if you post it here.

Adi Shamir
  • 32