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/*
* Copyright 2016, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.google.auth;
import java.util.Objects;
/**
* Interface for a service account signer. A signer for a service account is capable of signing
* bytes using the private key associated with its service account.
*/
public interface ServiceAccountSigner {
class SigningException extends RuntimeException {
private static final long serialVersionUID = -6503954300538947223L;
public SigningException(String message, Exception cause) {
super(message, cause);
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof SigningException)) {
return false;
}
SigningException other = (SigningException) obj;
return Objects.equals(getCause(), other.getCause())
&& Objects.equals(getMessage(), other.getMessage());
}
@Override
public int hashCode() {
return Objects.hash(getMessage(), getCause());
}
}
/**
* Returns the service account associated with the signer.
*
* @return The service account associated with the signer.
*/
String getAccount();
/**
* Signs the provided bytes using the private key associated with the service account.
*
* @param toSign bytes to sign
* @return signed bytes
* @throws SigningException if the attempt to sign the provided bytes failed
*/
byte[] sign(byte[] toSign);
}
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