com.amazonaws.auth

Class AbstractAWSSigner

java.lang.Object

com.amazonaws.auth.AbstractAWSSigner

All Implemented Interfaces:

Signer

Direct Known Subclasses:

AWS3Signer, AWS4Signer, QueryStringSigner

public abstract class AbstractAWSSigner
extends Object
implements Signer

Abstract base class for AWS signing protocol implementations. Provides utilities commonly needed by signing protocols such as computing canonicalized host names, query string parameters, etc.

Not intended to be sub-classed by developers.

Constructor Summary

Constructors

Constructor and Description
AbstractAWSSigner()

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	hash(byte[] data) Hashes the binary data using the SHA-256 algorithm.
byte[]	hash(String text) Hashes the string contents (assumed to be UTF-8) using the SHA-256 algorithm.
byte[]	sign(String stringData, byte[] key, SigningAlgorithm algorithm)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.amazonaws.auth.Signer

sign

Constructor Detail

AbstractAWSSigner

public AbstractAWSSigner()

Method Detail

sign

public byte[] sign(String stringData,
          byte[] key,
          SigningAlgorithm algorithm)
            throws AmazonClientException

Throws:

AmazonClientException

hash

public byte[] hash(String text)
            throws AmazonClientException

Hashes the string contents (assumed to be UTF-8) using the SHA-256 algorithm.

Parameters:

text - The string to hash.

Returns:

The hashed bytes from the specified string.

Throws:

AmazonClientException - If the hash cannot be computed.

hash

public byte[] hash(byte[] data)
            throws AmazonClientException

Hashes the binary data using the SHA-256 algorithm.

Parameters:

data - The binary data to hash.

Returns:

The hashed bytes from the specified data.

Throws:

AmazonClientException - If the hash cannot be computed.