https://community.nxp.com/t5/S32K/S32K148-SECRET-KEY/m-p/1206284#M9467 <P>Hello Team,</P><P>This chip is pre-provisioned with a cryptographic&nbsp;key at the NXP fab/plant, called the MCU SECRET KEY.&nbsp;</P><P>It&nbsp;allows NXP to execute a mass-erase on the chip if the on-board application gets&nbsp;corrupted and the chip cannot be accessed using the normal process.&nbsp;</P><P>The method to use this key is not well documented as far as I know and I assume part of it confidential.&nbsp;</P><P>My customer expressed a concern that this key may be abused to brick the product (i.e. a tool for denial of service).&nbsp;</P><P>This may happen if the method to use this key becomes public domain information because of academic research or a breach at NXP.&nbsp;</P><P>The customer asked if there is any official statement from NXP regarding this secret key and the possibility of abuse it?</P><P>Please advise back, Thanks in advance.</P><P>Best regards,</P><P>Shai</P> Mon, 04 Jan 2021 21:26:59 GMT shai_b 2021-01-04T21:26:59Z https://community.nxp.com/t5/S32K/S32K148-SECRET-KEY/m-p/1206284#M9467 <P>Hello Team,</P><P>This chip is pre-provisioned with a cryptographic&nbsp;key at the NXP fab/plant, called the MCU SECRET KEY.&nbsp;</P><P>It&nbsp;allows NXP to execute a mass-erase on the chip if the on-board application gets&nbsp;corrupted and the chip cannot be accessed using the normal process.&nbsp;</P><P>The method to use this key is not well documented as far as I know and I assume part of it confidential.&nbsp;</P><P>My customer expressed a concern that this key may be abused to brick the product (i.e. a tool for denial of service).&nbsp;</P><P>This may happen if the method to use this key becomes public domain information because of academic research or a breach at NXP.&nbsp;</P><P>The customer asked if there is any official statement from NXP regarding this secret key and the possibility of abuse it?</P><P>Please advise back, Thanks in advance.</P><P>Best regards,</P><P>Shai</P> Mon, 04 Jan 2021 21:26:59 GMT https://community.nxp.com/t5/S32K/S32K148-SECRET-KEY/m-p/1206284#M9467 shai_b 2021-01-04T21:26:59Z https://community.nxp.com/t5/S32K/S32K148-SECRET-KEY/m-p/1208844#M9526 <P>Hello Shai,</P> <P>The information you have is incorrect.</P> <P>The key you are referring to is unique for each device and is unknown to NXP or any device user, as it is generated "on chip" and never exposed.</P> <P>Furthermore, it cannot be used to "mass erase" the device.</P> <P>If you want / need more information, please send a private message.</P> <P>Hope this clarifies.</P> <P>-Fabrice</P> Fri, 08 Jan 2021 09:24:58 GMT https://community.nxp.com/t5/S32K/S32K148-SECRET-KEY/m-p/1208844#M9526 FabricePoulard 2021-01-08T09:24:58Z