- Hitachi has announced
anti-counterfeiting functionalities on memory chips without microprocessor such as memory cards, tickets or cartridges.
The Japanese company announced today the development of a mechanism for attesting the authenticity of memory chips using highly secure digital signatures.
Since the mechanism requires neither a CPU nor a computational unit, high security can be attained at a very low cost. As a result, counterfeited or altered memory devices can be recognized as such, with a wide range of applications, including memory cards for digital cameras or handheld video game consoles, cartridges for consumer products, admission tickets or gift coupons.
In order to establish that digital contents are authentic and have not been tampered with, digital signatures usually involve cost-intensive computations and require an important processing power. For instance, in some schemes, large integers with hundreds of digits are multiplied hundreds of times using a powerful CPU.
As a consequence, conventional memory chips without CPU cannot handle digital signatures and are confined to the use of basic identification techniques based for example on serial numbers. Moreover, adding a CPU with sufficient processing power...