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Editing: AlgorithmConstants.php
<?php namespace Aws\Crypto; class AlgorithmConstants { /** * The maximum number of 16-byte blocks that can be encrypted with a * GCM cipher. Note the maximum bit-length of the plaintext is (2^39 - 256), * which translates to a maximum byte-length of (2^36 - 32), which in turn * translates to a maximum block-length of (2^32 - 2). * * Reference: NIST Special Publication 800-38D. * @link http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf */ public const GCM_MAX_CONTENT_LENGTH_BITS = (1 << 39) - 256; /** * The Maximum length of the content that can be encrypted in CBC mode. */ public const CBC_MAX_CONTENT_LENGTH_BYTES = 1 << 55; /** * The maximum number of bytes that can be securely encrypted per a single key using AES/CTR. */ public const CTR_MAX_CONTENT_LENGTH_BYTES = -1; }
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