| 程序包 | 说明 | 
|---|---|
| com.aliyun.oss.common.auth | 
| 限定符和类型 | 类和说明 | 
|---|---|
class  | 
HmacSHA1Signature
Used for computing Hmac-SHA1 signature. 
 | 
class  | 
HmacSHA256Signature
Used for computing Hmac-SHA256 signature. 
 | 
| 限定符和类型 | 方法和说明 | 
|---|---|
static ServiceSignature | 
ServiceSignature.create()
Creates the default  
ServiceSignature instance which is
 HmacSHA1Signature. | 
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