| 摘要 |
A reception part receives RLC-PDU from an RLC processing part to extract information to be used for determining whether security is required. This information is sent to a security management part, which determines whether security is required. Data outputted from the reception part is stored into a data buffer via a data management part. The data, which is regarded by the security management part as requiring security, is read by the data management part from the data buffer, then encrypted by a security calculation part, and then stored back into the data buffer again. Concealed or non-concealed data is read from the data buffer and sent to an FP processing part via a transmission part.
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