| Package | Description | 
|---|---|
| com.amazonaws.auth | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | AWS3SignerSigner implementation that signs requests with the AWS3 signing protocol. | 
| class  | AWS4SignerSigner implementation that signs requests with the AWS4 signing protocol. | 
| class  | AWS4UnsignedPayloadSignerExactly the same as  AWS4Signerexcept if the request is being sent
 over HTTPS, then it returns the stringUNSIGNED-PAYLOADas the
 content SHA-256 so services that support it can avoid needing to calculate
 the value when authorizing the request. | 
| class  | QueryStringSignerSigner implementation responsible for signing an AWS query string request
 according to the various signature versions and hashing algorithms. | 
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