diff options
author | brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7> | 2006-11-18 17:31:01 +0000 |
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committer | brain <brain@e03df62e-2008-0410-955e-edbf42e46eb7> | 2006-11-18 17:31:01 +0000 |
commit | e8722fcff88a3d34b7efb6f10ae9caa89dd94fff (patch) | |
tree | e4487a5a745c2b2a826fc2ab197c902f78dea347 /include/aes.h | |
parent | e315b86451116065f337220dccfe8e53deb3eb43 (diff) |
Change from dos to unix line endings (how did these get in here?)
git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@5765 e03df62e-2008-0410-955e-edbf42e46eb7
Diffstat (limited to 'include/aes.h')
-rw-r--r-- | include/aes.h | 418 |
1 files changed, 209 insertions, 209 deletions
diff --git a/include/aes.h b/include/aes.h index b14338e7a..05f947084 100644 --- a/include/aes.h +++ b/include/aes.h @@ -1,209 +1,209 @@ -#ifndef __AES_H__
-#define __AES_H__
-
-#include <cstring>
-#include "inspircd_config.h"
-#include "base.h"
-
-using namespace std;
-
-/** The AES class is a utility class for use in modules and the core for encryption of data.
- */
-class AES : public classbase
-{
-public:
- enum { ECB=0, CBC=1, CFB=2 };
-
-private:
- enum { DEFAULT_BLOCK_SIZE=16 };
- enum { MAX_BLOCK_SIZE=32, MAX_ROUNDS=14, MAX_KC=8, MAX_BC=8 };
-
- static int Mul(int a, int b)
- {
- return (a != 0 && b != 0) ? sm_alog[(sm_log[a & 0xFF] + sm_log[b & 0xFF]) % 255] : 0;
- }
-
- /** Convenience method used in generating Transposition Boxes
- */
- static int Mul4(int a, char b[])
- {
- if(a == 0)
- return 0;
- a = sm_log[a & 0xFF];
- int a0 = (b[0] != 0) ? sm_alog[(a + sm_log[b[0] & 0xFF]) % 255] & 0xFF : 0;
- int a1 = (b[1] != 0) ? sm_alog[(a + sm_log[b[1] & 0xFF]) % 255] & 0xFF : 0;
- int a2 = (b[2] != 0) ? sm_alog[(a + sm_log[b[2] & 0xFF]) % 255] & 0xFF : 0;
- int a3 = (b[3] != 0) ? sm_alog[(a + sm_log[b[3] & 0xFF]) % 255] & 0xFF : 0;
- return a0 << 24 | a1 << 16 | a2 << 8 | a3;
- }
-
-public:
- AES();
-
- virtual ~AES();
-
- /** Expand a user-supplied key material into a session key.
- *
- * @param key The 128/192/256-bit user-key to use.
- * @param chain Initial chain block for CBC and CFB modes.
- * @param keylength 16, 24 or 32 bytes
- * @param blockSize The block size in bytes of this Rijndael (16, 24 or 32 bytes).
- */
- void MakeKey(char const* key, char const* chain, int keylength=DEFAULT_BLOCK_SIZE, int blockSize=DEFAULT_BLOCK_SIZE);
-
-private:
- /** Auxiliary Function
- */
- void Xor(char* buff, char const* chain)
- {
- if(false==m_bKeyInit)
- return;
- for(int i=0; i<m_blockSize; i++)
- *(buff++) ^= *(chain++);
- }
-
- /** Convenience method to encrypt exactly one block of plaintext, assuming Rijndael's default block size (128-bit).
- * @param in The plaintext
- * @param result The ciphertext generated from a plaintext using the key
- */
- void DefEncryptBlock(char const* in, char* result);
-
- /** Convenience method to decrypt exactly one block of plaintext, assuming Rijndael's default block size (128-bit).
- * @param in The ciphertext.
- * @param result The plaintext generated from a ciphertext using the session key.
- */
- void DefDecryptBlock(char const* in, char* result);
-
-public:
- /** Encrypt exactly one block of plaintext.
- * @param in The plaintext.
- * @param result The ciphertext generated from a plaintext using the key.
- */
- void EncryptBlock(char const* in, char* result);
-
- /** Decrypt exactly one block of ciphertext.
- * @param in The ciphertext.
- * @param result The plaintext generated from a ciphertext using the session key.
- */
- void DecryptBlock(char const* in, char* result);
-
- /** Encrypt multiple blocks of plaintext.
- * @param n Number of bytes to encrypt, must be a multiple of the keysize
- * @param in The plaintext to encrypt
- * @param result The output ciphertext
- * @param iMode Mode to use
- */
- void Encrypt(char const* in, char* result, size_t n, int iMode=ECB);
-
- /** Decrypt multiple blocks of ciphertext.
- * @param n Number of bytes to decrypt, must be a multiple of the keysize
- * @param in The ciphertext to decrypt
- * @param result The output plaintext
- * @param iMode Mode to use
- */
- void Decrypt(char const* in, char* result, size_t n, int iMode=ECB);
-
- /** Get Key Length
- */
- int GetKeyLength()
- {
- if(false==m_bKeyInit)
- return 0;
- return m_keylength;
- }
-
- /** Get Block Size
- */
- int GetBlockSize()
- {
- if(false==m_bKeyInit)
- return 0;
- return m_blockSize;
- }
-
- /** Get Number of Rounds
- */
- int GetRounds()
- {
- if(false==m_bKeyInit)
- return 0;
- return m_iROUNDS;
- }
-
- /** Reset the chain
- */
- void ResetChain()
- {
- memcpy(m_chain, m_chain0, m_blockSize);
- }
-
-public:
- /** Null chain
- */
- static char const* sm_chain0;
-
-private:
- static const int sm_alog[256];
- static const int sm_log[256];
- static const char sm_S[256];
- static const char sm_Si[256];
- static const int sm_T1[256];
- static const int sm_T2[256];
- static const int sm_T3[256];
- static const int sm_T4[256];
- static const int sm_T5[256];
- static const int sm_T6[256];
- static const int sm_T7[256];
- static const int sm_T8[256];
- static const int sm_U1[256];
- static const int sm_U2[256];
- static const int sm_U3[256];
- static const int sm_U4[256];
- static const char sm_rcon[30];
- static const int sm_shifts[3][4][2];
- /** Key Initialization Flag
- */
- bool m_bKeyInit;
- /** Encryption (m_Ke) round key
- */
- int m_Ke[MAX_ROUNDS+1][MAX_BC];
- /** Decryption (m_Kd) round key
- */
- int m_Kd[MAX_ROUNDS+1][MAX_BC];
- /** Key Length
- */
- int m_keylength;
- /** Block Size
- */
- int m_blockSize;
- /** Number of Rounds
- */
- int m_iROUNDS;
- /**Chain Block
- */
- char m_chain0[MAX_BLOCK_SIZE];
- char m_chain[MAX_BLOCK_SIZE];
- /** Auxiliary private use buffers
- */
- int tk[MAX_KC];
- int a[MAX_BC];
- int t[MAX_BC];
-};
-
-#endif
-
-/** Convert from binary to base64
- * @param out Output
- * @param in Input
- * @param inlen Number of bytes in input buffer
- */
-
-void to64frombits(unsigned char *out, const unsigned char *in, int inlen);
-/** Convert from base64 to binary
- * @out Output
- * @in Input
- * @maxlen Size of output buffer
- * @return Number of bytes actually converted
- */
-int from64tobits(char *out, const char *in, int maxlen);
-
+#ifndef __AES_H__ +#define __AES_H__ + +#include <cstring> +#include "inspircd_config.h" +#include "base.h" + +using namespace std; + +/** The AES class is a utility class for use in modules and the core for encryption of data. + */ +class AES : public classbase +{ +public: + enum { ECB=0, CBC=1, CFB=2 }; + +private: + enum { DEFAULT_BLOCK_SIZE=16 }; + enum { MAX_BLOCK_SIZE=32, MAX_ROUNDS=14, MAX_KC=8, MAX_BC=8 }; + + static int Mul(int a, int b) + { + return (a != 0 && b != 0) ? sm_alog[(sm_log[a & 0xFF] + sm_log[b & 0xFF]) % 255] : 0; + } + + /** Convenience method used in generating Transposition Boxes + */ + static int Mul4(int a, char b[]) + { + if(a == 0) + return 0; + a = sm_log[a & 0xFF]; + int a0 = (b[0] != 0) ? sm_alog[(a + sm_log[b[0] & 0xFF]) % 255] & 0xFF : 0; + int a1 = (b[1] != 0) ? sm_alog[(a + sm_log[b[1] & 0xFF]) % 255] & 0xFF : 0; + int a2 = (b[2] != 0) ? sm_alog[(a + sm_log[b[2] & 0xFF]) % 255] & 0xFF : 0; + int a3 = (b[3] != 0) ? sm_alog[(a + sm_log[b[3] & 0xFF]) % 255] & 0xFF : 0; + return a0 << 24 | a1 << 16 | a2 << 8 | a3; + } + +public: + AES(); + + virtual ~AES(); + + /** Expand a user-supplied key material into a session key. + * + * @param key The 128/192/256-bit user-key to use. + * @param chain Initial chain block for CBC and CFB modes. + * @param keylength 16, 24 or 32 bytes + * @param blockSize The block size in bytes of this Rijndael (16, 24 or 32 bytes). + */ + void MakeKey(char const* key, char const* chain, int keylength=DEFAULT_BLOCK_SIZE, int blockSize=DEFAULT_BLOCK_SIZE); + +private: + /** Auxiliary Function + */ + void Xor(char* buff, char const* chain) + { + if(false==m_bKeyInit) + return; + for(int i=0; i<m_blockSize; i++) + *(buff++) ^= *(chain++); + } + + /** Convenience method to encrypt exactly one block of plaintext, assuming Rijndael's default block size (128-bit). + * @param in The plaintext + * @param result The ciphertext generated from a plaintext using the key + */ + void DefEncryptBlock(char const* in, char* result); + + /** Convenience method to decrypt exactly one block of plaintext, assuming Rijndael's default block size (128-bit). + * @param in The ciphertext. + * @param result The plaintext generated from a ciphertext using the session key. + */ + void DefDecryptBlock(char const* in, char* result); + +public: + /** Encrypt exactly one block of plaintext. + * @param in The plaintext. + * @param result The ciphertext generated from a plaintext using the key. + */ + void EncryptBlock(char const* in, char* result); + + /** Decrypt exactly one block of ciphertext. + * @param in The ciphertext. + * @param result The plaintext generated from a ciphertext using the session key. + */ + void DecryptBlock(char const* in, char* result); + + /** Encrypt multiple blocks of plaintext. + * @param n Number of bytes to encrypt, must be a multiple of the keysize + * @param in The plaintext to encrypt + * @param result The output ciphertext + * @param iMode Mode to use + */ + void Encrypt(char const* in, char* result, size_t n, int iMode=ECB); + + /** Decrypt multiple blocks of ciphertext. + * @param n Number of bytes to decrypt, must be a multiple of the keysize + * @param in The ciphertext to decrypt + * @param result The output plaintext + * @param iMode Mode to use + */ + void Decrypt(char const* in, char* result, size_t n, int iMode=ECB); + + /** Get Key Length + */ + int GetKeyLength() + { + if(false==m_bKeyInit) + return 0; + return m_keylength; + } + + /** Get Block Size + */ + int GetBlockSize() + { + if(false==m_bKeyInit) + return 0; + return m_blockSize; + } + + /** Get Number of Rounds + */ + int GetRounds() + { + if(false==m_bKeyInit) + return 0; + return m_iROUNDS; + } + + /** Reset the chain + */ + void ResetChain() + { + memcpy(m_chain, m_chain0, m_blockSize); + } + +public: + /** Null chain + */ + static char const* sm_chain0; + +private: + static const int sm_alog[256]; + static const int sm_log[256]; + static const char sm_S[256]; + static const char sm_Si[256]; + static const int sm_T1[256]; + static const int sm_T2[256]; + static const int sm_T3[256]; + static const int sm_T4[256]; + static const int sm_T5[256]; + static const int sm_T6[256]; + static const int sm_T7[256]; + static const int sm_T8[256]; + static const int sm_U1[256]; + static const int sm_U2[256]; + static const int sm_U3[256]; + static const int sm_U4[256]; + static const char sm_rcon[30]; + static const int sm_shifts[3][4][2]; + /** Key Initialization Flag + */ + bool m_bKeyInit; + /** Encryption (m_Ke) round key + */ + int m_Ke[MAX_ROUNDS+1][MAX_BC]; + /** Decryption (m_Kd) round key + */ + int m_Kd[MAX_ROUNDS+1][MAX_BC]; + /** Key Length + */ + int m_keylength; + /** Block Size + */ + int m_blockSize; + /** Number of Rounds + */ + int m_iROUNDS; + /**Chain Block + */ + char m_chain0[MAX_BLOCK_SIZE]; + char m_chain[MAX_BLOCK_SIZE]; + /** Auxiliary private use buffers + */ + int tk[MAX_KC]; + int a[MAX_BC]; + int t[MAX_BC]; +}; + +#endif + +/** Convert from binary to base64 + * @param out Output + * @param in Input + * @param inlen Number of bytes in input buffer + */ + +void to64frombits(unsigned char *out, const unsigned char *in, int inlen); +/** Convert from base64 to binary + * @out Output + * @in Input + * @maxlen Size of output buffer + * @return Number of bytes actually converted + */ +int from64tobits(char *out, const char *in, int maxlen); + |