Patent ID: 7987372

Claim:
A method, comprising: managing access to a memory space shareable by several users, by using a plurality of passwords, the managing access including: defining a maximum number of passwords; providing a password storage zone; dividing the shareable memory space into a plurality of blocks greater in number than the maximum number of passwords; providing, in each block, a parameterization field to parameterize protection of the block; providing, in each parameterization field, a binary index smaller in size than the password and designating a password stored in the password storage zone that is assigned to the protection of the block, a same password possibly being used to protect several blocks; and allocating, to each block, access rights that enable access to the block if one of the several users presents a password that corresponds to the password designated by the index present in the block parameterization field, the allocating being performed by a configured control circuit of an integrated circuit.