# AsnAuthorizationContext
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Provides authorization for Amazon to bring an Autonomous System Number (ASN) to a specific Amazon account using bring your own ASN (BYOASN). For details on the format of the message and signature, see [Tutorial: Bring your ASN to IPAM](https://docs.amazonaws.cn/vpc/latest/ipam/tutorials-byoasn.html) in the *Amazon VPC IPAM guide*.

## Contents
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 ** Message **   
The authorization context's message.  
Type: String  
Required: Yes

 ** Signature **   
The authorization context's signature.  
Type: String  
Required: Yes

## See Also
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For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/AsnAuthorizationContext) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/AsnAuthorizationContext) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/AsnAuthorizationContext)