| Package | Description | 
|---|---|
| org.apache.http.impl.auth | Default implementations of standard and common HTTP authentication
 schemes. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | BasicSchemeBasic authentication scheme as defined in RFC 2617. | 
| class  | DigestSchemeDigest authentication scheme as defined in RFC 2617. | 
| class  | GGSSchemeBase | 
| class  | KerberosSchemeKERBEROS authentication scheme. | 
| class  | NegotiateSchemeDeprecated. 
 (4.2)  use  SPNegoSchemeorKerberosScheme. | 
| class  | NTLMSchemeNTLM is a proprietary authentication scheme developed by Microsoft
 and optimized for Windows platforms. | 
| class  | RFC2617SchemeAbstract authentication scheme class that lays foundation for all
 RFC 2617 compliant authentication schemes and provides capabilities common
 to all authentication schemes defined in RFC 2617. | 
| class  | SPNegoSchemeSPNEGO (Simple and Protected GSSAPI Negotiation Mechanism) authentication
 scheme. | 
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