公开(公告)号：US20180300237A1

公开(公告)日：2018-10-18

申请号：US16015779

申请日：2018-06-22

申请人： MORPHO

发明人： Ahmadou SERE ,  Frédéric BOULET

IPC分类号： G06F12/02 ,  G06F12/14 ,  G06F7/58

CPC分类号： G06F12/0284 ,  G06F7/582 ,  G06F12/0292 ,  G06F12/1408 ,  G06F2212/251

摘要： A method for access to all cells in a memory area for purposes of writing or reading data blocks in the cells may include, for each access time (Ti with i=0 to N) to the cells in the memory area to be accessed, a process of determining the address (ADRj, with j=0 to N) of the cell of the memory area to be accessed at the access time (Ti), an address (ADRj) determined for an access time Ti not being once again determined for another access time (Tk, k≠j). The process of determining each address (ADRj) may be a pseudorandom process. The method may be used, for example, in any type of card, chip card, SIM card, etc., which includes a processing unit, such as a microcontroller, for manipulating cryptographic data serving to identify and/or authenticate a user of such a card.

公开(公告)号：US20150356008A1

公开(公告)日：2015-12-10

申请号：US14758655

申请日：2013-12-23

申请人： MORPHO

发明人： Ahmadou SERE ,  Frédéric BOULET

IPC分类号： G06F12/02

CPC分类号： G06F12/0284 ,  G06F7/582 ,  G06F12/0292 ,  G06F12/1408 ,  G06F2212/251

摘要： A method for access to all cells in a memory area for purposes of writing or reading data blocks in the cells may include, for each access time (Ti with i=0 to N) to the cells in the memory area to be accessed, a process of determining the address (ADRj, with j=0 to N) of the cell of the memory area to be accessed at the access time (Ti), an address (ADRj) determined for an access time Ti not being once again determined for another access time (Tk, k≠j). The process of determining each address (ADRj) may be a pseudorandom process. The method may be used, for example, in any type of card, chip card, SIM card, etc., which includes a processing unit, such as a microcontroller, for manipulating cryptographic data serving to identify and/or authenticate a user of such a card.

摘要翻译： 为了在单元中写入或读取数据块的目的，访问存储器区域中的所有单元的方法可以包括对于要访问的存储器区域中的单元的每个访问时间（Ti，i = 0到N）， 确定在访问时间（Ti）要访问的存储区域的单元的地址（ADRj，j = 0到N）的处理，对于访问时间Ti确定的地址（ADRj）不再被确定为 另一个访问时间（Tk，k≠j）。 确定每个地址（ADRj）的过程可以是伪随机过程。 该方法可以用于例如任何类型的卡，芯片卡，SIM卡等，其包括诸如微控制器的处理单元，用于操纵用于识别和/或认证用户的密码数据 一张卡。