25bd5d8adb
subrepo: subdir: "deps/juce" merged: "b13f9084e" upstream: origin: "https://github.com/essej/JUCE.git" branch: "sono6good" commit: "b13f9084e" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo.git" commit: "2f68596"
113 lines
4.2 KiB
C++
113 lines
4.2 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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//==============================================================================
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/**
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BlowFish encryption class.
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@tags{Cryptography}
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*/
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class JUCE_API BlowFish
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{
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public:
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//==============================================================================
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/** Creates an object that can encode/decode based on the specified key.
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The key data can be up to 72 bytes long.
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*/
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BlowFish (const void* keyData, int keyBytes);
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/** Creates a copy of another blowfish object. */
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BlowFish (const BlowFish&);
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/** Copies another blowfish object. */
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BlowFish& operator= (const BlowFish&) noexcept;
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/** Destructor. */
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~BlowFish() noexcept;
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//==============================================================================
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/** Encrypts a pair of 32-bit integers. */
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void encrypt (uint32& data1, uint32& data2) const noexcept;
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/** Decrypts a pair of 32-bit integers. */
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void decrypt (uint32& data1, uint32& data2) const noexcept;
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//==============================================================================
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/** Encrypts a memory block */
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void encrypt (MemoryBlock& data) const;
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/** Decrypts a memory block */
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void decrypt (MemoryBlock& data) const;
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//==============================================================================
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/** Encrypts data in-place
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@param buffer The message that should be encrypted. See bufferSize on size
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requirements!
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@param sizeOfMsg The size of the message that should be encrypted in bytes
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@param bufferSize The size of the buffer in bytes. To accommodate the encrypted
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data, the buffer must be larger than the message: the size of
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the buffer needs to be equal or greater than the size of the
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message in bytes rounded to the next integer which is divisible
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by eight. If the message size in bytes is already divisible by eight
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then you need to add eight bytes to the buffer size. If in doubt
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simply use bufferSize = sizeOfMsg + 8.
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@returns The size of the decrypted data in bytes or -1 if the decryption failed.
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*/
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int encrypt (void* buffer, size_t sizeOfMsg, size_t bufferSize) const noexcept;
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/** Decrypts data in-place
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@param buffer The encrypted data that should be decrypted
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@param bytes The size of the encrypted data in bytes
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@returns The size of the decrypted data in bytes or -1 if the decryption failed.
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*/
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int decrypt (void* buffer, size_t bytes) const noexcept;
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private:
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//==============================================================================
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static int pad (void*, size_t, size_t) noexcept;
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static int unpad (const void*, size_t) noexcept;
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bool apply (void*, size_t, void (BlowFish::*op) (uint32&, uint32&) const) const;
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//==============================================================================
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uint32 p[18];
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HeapBlock<uint32> s[4];
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uint32 F (uint32) const noexcept;
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JUCE_LEAK_DETECTOR (BlowFish)
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};
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} // namespace juce
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