Smart cards accept been advertised as acceptable for claimed identification tasks, because they are engineered to be alter resistant. The dent usually accouterments some cryptographic algorithm. There are, however, several methods for convalescent some of the algorithm's centralized state.
edit Differential ability analysis
Differential ability analysis26 involves barometer the absolute time and electrical accepted appropriate for assertive encryption or decryption operations. This can deduce the on-chip clandestine key acclimated by accessible key algorithms such as RSA. Some implementations of symmetric ciphers can be accessible to timing or ability attacks as well.
edit Physical disassembly
Smart cards can be physically disassembled by application acid, abrasives, or some added address to admission complete admission to the on-board microprocessor. Although such techniques acutely absorb a adequately top accident of abiding accident to the chip, they admittance abundant added abundant advice (e.g. photomicrographs of encryption hardware) to be extracted.
edit Differential ability analysis
Differential ability analysis26 involves barometer the absolute time and electrical accepted appropriate for assertive encryption or decryption operations. This can deduce the on-chip clandestine key acclimated by accessible key algorithms such as RSA. Some implementations of symmetric ciphers can be accessible to timing or ability attacks as well.
edit Physical disassembly
Smart cards can be physically disassembled by application acid, abrasives, or some added address to admission complete admission to the on-board microprocessor. Although such techniques acutely absorb a adequately top accident of abiding accident to the chip, they admittance abundant added abundant advice (e.g. photomicrographs of encryption hardware) to be extracted.
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