S-BGP and IP prefix aggregation

[王娜 <wn () ndsc com cn>]

I have a question about S-BGP. When IP prefix is aggregated, and a S-BGP speaker receives a route announcement with the 
aggregated ip prefix,

how does it verify the authority of the AS to announce the IP prefix.  The aggregated IP prefix should have not address 
attestation. 

 

 wn () mail ndsc com cn