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| 供应商 | Secure-IC |
|---|---|
| 型号 | Active mesh against tampering attacks - Active Shield |
| 类型 | Hard IP |
| 到期日 | Silicon proven |
| 源网址 | View more |
| 特征 | Protection against cutting and probing Anti-tamper solution with a mesh placed over the sensitive parts of the circuit (analog/digital/memory) and actively monitored Uses randomly cryptographically-generated patterns to detect integrity violations Mesh can be interleaved with P/G network in topmost layers (no need to sacrifice a layer) Easy to integrate (STA, DRC, Antenna clean, JTAG) Lightweight No calibration after design Fully Digital and based on standard cells Transferable to any Design Kit AMBA interface |
| 详情页 | View more |
| 附件链接 | View more |
Attacks against digital circuits can be performed by directly tampering with the device's internal structure. These attacks are intrusive, and regroup attempts to directly probe or force signals, remove, add or modify features on the chip (metal routing, transistors).
Secure-IC s Active Shield technology is designed to deter such intrusive attacks by placing a mesh over the sensitive parts of the circuit and actively monitoring the mesh's integrity. This counter-measure protects the circuit s features such as metal routing and transistors that are beneath the mesh from undetected access or modification through the front-side, including:
- Wire micro-probing to read or force an equipotential with Focused Ion Beam (FIB)
- Wire cutting (e.g. alarms, entropy source disconnection from a true random number generator...)
- Wire re-routing
- Burnt fuses opening
- ROM Altering
- Scanning imaging attacks (PICA, LVP/LVI)
In order to further deter intrusive attacks, the mesh is actively monitored using random cryptographically-generated patterns to detect integrity violations. By using this technology, modifying and rerouting the mesh becomes very costly as the attacker has to reroute many wires to avoid detection. In addition, the data travelling through the shield mesh cannot be predicted by the attacker, because it is output by a cryptographic block cipher.
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