Processing Method for Security Algorithm and Terminal

A method for processing a security algorithm, comprising:

• performing, by a terminal, cell search, and selecting, by the terminal, a target cell from found cells;
• transmitting, by the terminal, a radio resource control (RRC) connection re-establishment request message to the target cell;
• receiving, by the terminal, an RRC connection re-establishment message from the target cell, and determining, by the terminal, whether the RRC connection re-establishment message carries configuration information of a security algorithm supported by the target cell;
• and
• transmitting, by the terminal, an RRC connection re-establishment completion message to the target cell via the security algorithm supported by the target cell, in response to the RRC connection re-establishment message carrying the configuration information of the security algorithm supported by the target cell.

A terminal comprising:

• at least one processor;
• and
• a memory storing computer programs which, when executed by the at least one processor, cause the at least one processor to:
• perform cell search and select a cell supporting a security algorithm as a target cell from found cells, wherein the security algorithm is used by the terminal before radio resource control (RRC) connection re-establishment or RRC connection recovery;
• and
• perform an RRC connection re-establishment procedure or an RRC connection recovery procedure between the terminal and the target cell.