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发表于 2017-5-31 17:38:20
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@brookslee
本帖最后由 19831219 于 2017-5-31 17:52 编辑
service request消息是一个非标准的L3消息,需要进行加密吗?我感觉不需要呢,因为协议有一句话说:
When the UE establishes a new NAS signalling connection, it shall send the initial NAS message
- partially ciphered, if it is a CONTROL PLANE SERVICE REQUEST message including an ESM message container information element or a NAS message container information element; and
- unciphered, if it is any other initial NAS message.
但是我看其他的文档有的写的加密 Thus,
the message includes the NAS base key identifier (KSIASME), and is sent encrypted with the encryption
key KNASenc and integrity-protected with the integrity key (NASint). This Service Request message is
delivered to the eNB as included in a RRC Connection Setup Complete message over the radio link
between the UE and eNB. Then it is sent as included in a S1AP message, Initial UE Message, from the
eNB to the MME.
MME进行完整性验证是不是:MME计算MAC,利用最后两个字节同service req中的short MAC做比较,一样就成功了啊?我感觉这样,不过不敢确定
这个消息的格式就是他本身的几个参数吗,我感觉是,但是从有的文档上看加密我就不知道发送这个消息该怎么写了
谢谢!
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