com.amazonaws.encryptionsdk.internal.Constants Maven / Gradle / Ivy
/*
* Copyright 2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except
* in compliance with the License. A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*/
package com.amazonaws.encryptionsdk.internal;
public final class Constants {
/**
* Default length of the message identifier used to uniquely identify every
* ciphertext created by this library.
*/
public final static int MESSAGE_ID_LEN = 16;
private Constants() {
// Prevent instantiation
}
/**
* Marker for identifying the final frame.
*/
public final static int ENDFRAME_SEQUENCE_NUMBER = ~0; // is 0xFFFFFFFF
/**
* The identifier for non-final frames in the framing content type. This value is used as part
* of the additional authenticated data (AAD) when encryption of content in a frame.
*/
public final static String FRAME_STRING_ID = "AWSKMSEncryptionClient Frame";
/**
* The identifier for the final frame in the framing content type. This value is used as part of
* the additional authenticated data (AAD) when encryption of content in a frame.
*/
public final static String FINAL_FRAME_STRING_ID = "AWSKMSEncryptionClient Final Frame";
/**
* The identifier for the single block content type. This value is used as part of the
* additional authenticated data (AAD) when encryption of content in a single block.
*/
public final static String SINGLE_BLOCK_STRING_ID = "AWSKMSEncryptionClient Single Block";
/**
* Maximum length of the content that can be encrypted in GCM mode.
*/
public final static long GCM_MAX_CONTENT_LEN = (1L << 36) - 32;
public final static int MAX_NONCE_LENGTH = (1 << 8) - 1;
/**
* Maximum value of an unsigned short.
*/
public final static int UNSIGNED_SHORT_MAX_VAL = (1 << 16) - 1;
public final static long MAX_FRAME_NUMBER = (1L << 32) - 1;
public static final String EC_PUBLIC_KEY_FIELD = "aws-crypto-public-key";
}