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annotate dcrypt/crypto/ManagedBlockCipher.d @ 12:8c7f8fecdd75

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Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
author Thomas Dixon <reikon@reikon.us>
date Sat, 30 Aug 2008 14:38:23 -0400
parents dcrypt/crypto/BlockCipherWrapper.d@cd376996cdb3
children 7ea528b61802
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10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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1 /**
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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2 * This file is part of the dcrypt project.
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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3 *
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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4 * Copyright: Copyright (C) dcrypt contributors 2008. All rights reserved.
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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5 * License: MIT
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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6 * Authors: Thomas Dixon
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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7 */
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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8
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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9 module dcrypt.crypto.ManagedBlockCipher;
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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10
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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11 public import dcrypt.crypto.BlockCipher;
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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12 import dcrypt.crypto.BlockCipherPadding;
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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13
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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14 /**
12
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15 * Wraps a block cipher, enabling the encryption of a stream.
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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16 * Padding, if specified, is to be applied in the finish() call.
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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17 *
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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18 * Based on PaddedBufferedBlockCipher from BC.
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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19 */
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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20 class ManagedBlockCipher : BlockCipher {
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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21 BlockCipher cipher;
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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22 BlockCipherPadding padding;
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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23
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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24 protected {
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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25 ubyte[] buffer;
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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26 uint index;
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27 bool encrypt,
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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28 streamMode = false;
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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29 }
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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30
12
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31 /**
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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32 * Create a managed block cipher.
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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33 *
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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34 * Params:
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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35 * cipher = Block cipher we're wrapping
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36 * padding = Padding or null if no padding
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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37 *
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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38 * Returns: A new ManagedBlockCipher
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39 */
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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40 this(BlockCipher cipher, BlockCipherPadding padding=null) {
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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41 this.cipher = cipher;
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42
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43 char[] mode = cipher.name;
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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44 int i;
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45 for (i = 0; i < mode.length; i++)
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46 if (mode[i] == '/')
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47 break;
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48 if (i < mode.length) {
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49 mode = mode[i+1..i+4];
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50 this.streamMode = (mode == "CTR" || mode == "CFB" || mode == "OFB");
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51 }
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52
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53 this.padding = padding; // null signifies no padding is to be applied
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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54 buffer = new ubyte[blockSize];
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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55 }
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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56
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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57 void init(bool encrypt, CipherParameters params) {
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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58 this.encrypt = encrypt;
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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59 cipher.init(encrypt, params);
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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60 }
12
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61
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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62 char[] name() {
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63 if (padding is null)
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64 return cipher.name;
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65 return cipher.name~"/"~padding.name;
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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66 }
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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67
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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68 uint blockSize() {
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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69 return cipher.blockSize;
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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70 }
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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71
12
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72 /**
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73 * Update the cipher object with data from input_ and if it fills
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74 * a block, place it in output.
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75 *
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76 * Returns: The number of bytes placed in output_.
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77 */
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diff changeset
78 uint update(void[] input_, void[] output_) {
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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diff changeset
79 ubyte[] input = cast(ubyte[]) input_,
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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diff changeset
80 output = cast(ubyte[]) output_;
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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parents:
diff changeset
81
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
82 if (encrypt && input.length > output.length)
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
83 throw new ShortBufferError("Managed "~name()~": Output buffer too short");
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
Thomas Dixon <reikon@reikon.us>
parents:
diff changeset
84
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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diff changeset
85 uint result = 0,
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
86 len = input.length,
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
87 diff = buffer.length - index,
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
Thomas Dixon <reikon@reikon.us>
parents:
diff changeset
88 i = 0;
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
89 if (len > diff) {
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
90 buffer[index..buffer.length] = input[i..diff];
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
91 result += cipher.update(buffer, output[i..i+blockSize]);
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
92 index = 0;
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
93 len -= diff;
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
Thomas Dixon <reikon@reikon.us>
parents:
diff changeset
94 i += blockSize;
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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diff changeset
95
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
96 while (len > blockSize) {
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
97 result += cipher.update(input[i..i+blockSize], output[i..i+blockSize]);
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
98 len -= blockSize;
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
99 i += blockSize;
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
100 }
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
Thomas Dixon <reikon@reikon.us>
parents:
diff changeset
101 }
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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diff changeset
102
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
103 buffer[0..len] = input[i..i+len];
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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104 index += len;
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Thomas Dixon <reikon@reikon.us>
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diff changeset
105
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Thomas Dixon <reikon@reikon.us>
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diff changeset
106 return result;
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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107 }
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Thomas Dixon <reikon@reikon.us>
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diff changeset
108
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Thomas Dixon <reikon@reikon.us>
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diff changeset
109 /**
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110 * Finalize the cipher, passing all remaining buffered input
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Thomas Dixon <reikon@reikon.us>
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111 * through the cipher (padding it first, if specified) and
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Thomas Dixon <reikon@reikon.us>
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diff changeset
112 * subsequently placing it in output_.
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Thomas Dixon <reikon@reikon.us>
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diff changeset
113 *
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Thomas Dixon <reikon@reikon.us>
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114 * Returns: The number of bytes placed in output_.
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Thomas Dixon <reikon@reikon.us>
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diff changeset
115 */
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Thomas Dixon <reikon@reikon.us>
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diff changeset
116 uint finish(void[] output_) {
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Thomas Dixon <reikon@reikon.us>
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diff changeset
117 ubyte[] output = cast(ubyte[]) output_;
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Thomas Dixon <reikon@reikon.us>
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118 uint result = 0;
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Thomas Dixon <reikon@reikon.us>
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diff changeset
119 if (encrypt) {
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Thomas Dixon <reikon@reikon.us>
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diff changeset
120 if (index == blockSize) {
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Thomas Dixon <reikon@reikon.us>
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diff changeset
121 if (padding !is null && output.length < (blockSize << 1))
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
122 throw new ShortBufferError("Managed "~name()~": Output buffer too short");
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Thomas Dixon <reikon@reikon.us>
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diff changeset
123 result += cipher.update(buffer, output[result..result+blockSize]);
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
124 index = 0;
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125 }
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diff changeset
126
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Thomas Dixon <reikon@reikon.us>
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diff changeset
127 if (padding !is null) {
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Thomas Dixon <reikon@reikon.us>
parents: 10
diff changeset
128 uint diff = buffer.length - index;
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Thomas Dixon <reikon@reikon.us>
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diff changeset
129 buffer[index..buffer.length] = padding.pad(diff);
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Thomas Dixon <reikon@reikon.us>
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diff changeset
130 index += diff;
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diff changeset
131 }
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diff changeset
132
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diff changeset
133 if (index)
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diff changeset
134 result += cipher.update(buffer[0..index], output[result..result+index]);
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Thomas Dixon <reikon@reikon.us>
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diff changeset
135 } else {
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Thomas Dixon <reikon@reikon.us>
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diff changeset
136 if (streamMode || index == blockSize) {
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
137 result += cipher.update(buffer[0..index], buffer[0..index]);
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
138 index = 0;
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
Thomas Dixon <reikon@reikon.us>
parents:
diff changeset
139 } else {
12
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
Thomas Dixon <reikon@reikon.us>
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diff changeset
140 reset();
8c7f8fecdd75 Added ManagedBlockCipher, changed Crypto to just import everything, made Hash.update() return itself (for chaining) and ditched BlockCipherWrapper.
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diff changeset
141 throw new ShortBufferError(
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Thomas Dixon <reikon@reikon.us>
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diff changeset
142 "Managed "~name()~": Padded last block not equal to cipher's blocksize");
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Thomas Dixon <reikon@reikon.us>
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diff changeset
143 }
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Thomas Dixon <reikon@reikon.us>
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diff changeset
144 try {
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Thomas Dixon <reikon@reikon.us>
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diff changeset
145 if (padding !is null)
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Thomas Dixon <reikon@reikon.us>
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diff changeset
146 result -= padding.unpad(buffer);
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Thomas Dixon <reikon@reikon.us>
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diff changeset
147 output[0..result] = buffer[0..result];
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Thomas Dixon <reikon@reikon.us>
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diff changeset
148 } finally {
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Thomas Dixon <reikon@reikon.us>
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diff changeset
149 reset();
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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parents:
diff changeset
150 }
12
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Thomas Dixon <reikon@reikon.us>
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diff changeset
151 }
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diff changeset
152 reset();
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diff changeset
153 return result;
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diff changeset
154 }
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diff changeset
155
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Thomas Dixon <reikon@reikon.us>
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diff changeset
156 /**
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Thomas Dixon <reikon@reikon.us>
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diff changeset
157 * Params:
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diff changeset
158 * len = Number of bytes you plan on passing to update()
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Thomas Dixon <reikon@reikon.us>
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diff changeset
159 *
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Thomas Dixon <reikon@reikon.us>
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diff changeset
160 * Returns: The number of bytes to be output upon a call to update()
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Thomas Dixon <reikon@reikon.us>
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diff changeset
161 * with an input length of len bytes.
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Thomas Dixon <reikon@reikon.us>
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diff changeset
162 */
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Thomas Dixon <reikon@reikon.us>
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diff changeset
163 uint updateOutputSize(uint len) {
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Thomas Dixon <reikon@reikon.us>
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diff changeset
164 uint result = len + index;
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Thomas Dixon <reikon@reikon.us>
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diff changeset
165 return result - (result % blockSize);
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Thomas Dixon <reikon@reikon.us>
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diff changeset
166 }
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Thomas Dixon <reikon@reikon.us>
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diff changeset
167
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Thomas Dixon <reikon@reikon.us>
parents: 10
diff changeset
168 /**
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diff changeset
169 * Params:
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diff changeset
170 * len = Number of bytes you plan on passing to update()
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diff changeset
171 *
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Thomas Dixon <reikon@reikon.us>
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diff changeset
172 * Returns: The number of bytes to be output with a call to update()
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173 * using an input of len bytes, followed by a call to finish().
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174 * This method takes into account padding, mode, etc. Will
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175 * return 0 if your input is likely to error (i.e. len is 14
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176 * for AES in ECB mode).
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177 */
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178 uint finishOutputSize(uint len) {
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179 uint result = len + index,
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180 diff = result % blockSize;
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181
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182 // Input is a multiple of block size
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183 if (!diff)
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184 return result;
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185
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186 // No padding, return result if stream mode, 0 if not (it'll error)
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187 if (padding is null)
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188 return (streamMode ? result : 0);
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189
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190 // Padding, return len(input+padding) if encrypting or 0 if not (it'll error)
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191 return (encrypt ? result - diff + blockSize : 0);
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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192 }
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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193
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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194 void reset() {
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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195 cipher.reset();
12
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196 index = 0;
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197 buffer[] = 0;
10
cd376996cdb3 Renamed SymmetricCipher back to Cipher (we don't support any other kind atm, I'll deal with it when we do.). Added BlockCipherWrapper for the encryption of arbitrary streams with or without padding. Removed hashByName, and replaced it with createHash. Re-did the high-level API, and filled out Crypto. Added cipher creation via createCipher. Added dsk to the CONTRIBUTORS file for helping with the design of the high-level API.
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198 }
12
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199 }