media-cloud-sync / includes / sdk / s3 / Aws / Crypto / Cipher / CipherMethod.php

CipherMethod.php in Media Cloud Sync 1.4.2, at includes/sdk/s3/Aws/Crypto/Cipher/CipherMethod.php

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1	<?php
2
3	namespace Dudlewebs\WPMCS\s3\Aws\Crypto\Cipher;
4
5	interface CipherMethod
6	{
7	/**
8	* Returns an identifier recognizable by `openssl_*` functions, such as
9	* `aes-256-cbc` or `aes-128-ctr`.
10	*
11	* @return string
12	*/
13	public function getOpenSslName();
14	/**
15	* Returns an AES recognizable name, such as 'AES/GCM/NoPadding'.
16	*
17	* @return string
18	*/
19	public function getAesName();
20	/**
21	* Returns the IV that should be used to initialize the next block in
22	* encrypt or decrypt.
23	*
24	* @return string
25	*/
26	public function getCurrentIv();
27	/**
28	* Indicates whether the cipher method used with this IV requires padding
29	* the final block to make sure the plaintext is evenly divisible by the
30	* block size.
31	*
32	* @return boolean
33	*/
34	public function requiresPadding();
35	/**
36	* Adjust the return of this::getCurrentIv to reflect a seek performed on
37	* the encryption stream using this IV object.
38	*
39	* @param int $offset
40	* @param int $whence
41	*
42	* @throws LogicException Thrown if the requested seek is not supported by
43	* this IV implementation. For example, a CBC IV
44	* only supports a full rewind ($offset === 0 &&
45	* $whence === SEEK_SET)
46	*/
47	public function seek($offset, $whence = \SEEK_SET);
48	/**
49	* Take account of the last cipher text block to adjust the return of
50	* this::getCurrentIv
51	*
52	* @param string $cipherTextBlock
53	*/
54	public function update($cipherTextBlock);
55	}
56