-/* +------------------------------------+\r * | Inspire Internet Relay Chat Daemon |\r * +------------------------------------+\r *\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team\r * See: http://www.inspircd.org/wiki/index.php/Credits\r *\r * This program is free but copyrighted software; see\r * the file COPYING for details.\r *\r * ---------------------------------------------------\r */\r\r#ifndef __HASH_H__\r#define __HASH_H__\r\r#include "modules.h"\r\r#define SHA256_DIGEST_SIZE (256 / 8)\r#define SHA256_BLOCK_SIZE (512 / 8)\r\r/** HashRequest is the base class used to send Hash requests to hashing.so.\r * You should not instantiate classes of type HashRequest directly, instead\r * you should instantiate classes of type HashResetRequest, HashSumRequest,\r * HashKeyRequest and HashHexRequest, shown below.\r */\rclass HashRequest : public Request\r{\r /** The keys (IV) to use */\r unsigned int* keys;\r /** The output characters (hex sequence) to use */\r const char* outputs;\r /** The string to hash */\r std::string tohash;\r public:\r /** Initialize HashRequest as an Hash_RESET message */\r HashRequest(const char* req, Module* Me, Module* Target) : Request(Me, Target, req)\r {\r }\r\r /** Initialize HashRequest as an Hash_SUM message */\r HashRequest(Module* Me, Module* Target, const std::string &hashable) : Request(Me, Target, "SUM"), keys(NULL), outputs(NULL), tohash(hashable)\r {\r }\r\r /** Initialize HashRequest as an Hash_KEY message */\r HashRequest(Module* Me, Module* Target, unsigned int* k) : Request(Me, Target, "KEY"), keys(k), outputs(NULL), tohash("")\r {\r }\r\r /** Initialize HashRequest as an Hash_HEX message */\r HashRequest(Module* Me, Module* Target, const char* out) : Request(Me, Target, "HEX"), keys(NULL), outputs(out), tohash("")\r {\r }\r\r /** Get data to be hashed */\r const char* GetHashData()\r {\r return tohash.c_str();\r }\r\r /** Get keys (IVs) to be used */\r unsigned int* GetKeyData()\r {\r return keys;\r }\r\r /** Get output characters (hex sequence) to be used */\r const char* GetOutputs()\r {\r return outputs;\r }\r};\r\r/** Send this class to the hashing module to query for its name.\r *\r * Example:\r * \code\r * cout << "Using hash algorithm: " << HashNameRequest(this, HashModule).Send();\r * \endcode\r */\rclass HashNameRequest : public HashRequest\r{\r public:\r /** Initialize HashNameRequest for sending.\r * @param Me A pointer to the sending module\r * @param Target A pointer to the hashing module\r */\r HashNameRequest(Module* Me, Module* Target) : HashRequest("NAME", Me, Target)\r {\r }\r};\r\r/** Send this class to the hashing module to reset the Hash module to a known state.\r * This will reset the IV to the defaults specified by the Hash spec,\r * and reset the hex sequence to "0123456789abcdef". It should be sent before\r * ANY other Request types.\r *\r * Example:\r * \code\r * // Reset the Hash module.\r * HashResetRequest(this, HashModule).Send();\r * \endcode\r */\rclass HashResetRequest : public HashRequest\r{\r public:\r /** Initialize HashResetRequest for sending.\r * @param Me A pointer to the sending module\r * @param Target A pointer to the hashing module\r */\r HashResetRequest(Module* Me, Module* Target) : HashRequest("RESET", Me, Target)\r {\r }\r};\r\r/** Send this class to the hashing module to HashSUM a std::string.\r * You should make sure you know the state of the module before you send this\r * class, e.g. by first sending an HashResetRequest class. The hash will be\r * returned when you call Send().\r *\r * Example:\r * \code\r * // ALWAYS ALWAYS reset first, or set your own IV and hex chars.\r * HashResetRequest(this, HashModule).Send();\r * // Get the Hash sum of the string 'doodads'.\r * std::string result = HashSumRequest(this, HashModule, "doodads").Send();\r * \endcode\r */\rclass HashSumRequest : public HashRequest\r{\r public:\r /** Initialize HashSumRequest for sending.\r * @param Me A pointer to the sending module\r * @param Target A pointer to the hashing module\r * @param data The data to be hashed\r */\r HashSumRequest(Module* Me, Module* Target, const std::string &data) : HashRequest(Me, Target, data)\r {\r }\r};\r\r/** Send this class to hashing module to change the IVs (keys) to use for hashing.\r * You should make sure you know the state of the module before you send this\r * class, e.g. by first sending an HashResetRequest class. The default values for\r * the IV's are those specified in the Hash specification. Only in very special\r * circumstances should you need to change the IV's (see for example m_cloaking.cpp)\r *\r * Example:\r * \code\r * unsigned int iv[] = { 0xFFFFFFFF, 0x00000000, 0xAAAAAAAA, 0xCCCCCCCC };\r * HashKeyRequest(this, HashModule, iv);\r * \endcode\r */\rclass HashKeyRequest : public HashRequest\r{\r public:\r /** Initialize HashKeyRequest for sending.\r * @param Me A pointer to the sending module\r * @param Target A pointer to the hashing module\r * @param data The new IV's. This should be an array of exactly four 32 bit values.\r * On 64-bit architectures, the upper 32 bits of the values will be discarded.\r */\r HashKeyRequest(Module* Me, Module* Target, unsigned int* data) : HashRequest(Me, Target, data)\r {\r }\r};\r\r/** Send this class to the hashing module to change the hex sequence to use for generating the returned value.\r * You should make sure you know the state of the module before you send this\r * class, e.g. by first sending an HashResetRequest class. The default value for\r * the hex sequence is "0123456789abcdef". Only in very special circumstances should\r * you need to change the hex sequence (see for example m_cloaking.cpp).\r *\r * Example:\r * \code\r * static const char tab[] = "fedcba9876543210";\r * HashHexRequest(this, HashModule, tab);\r * \endcode\r */\rclass HashHexRequest : public HashRequest\r{\r public:\r /** Initialize HashHexRequest for sending.\r * @param Me A pointer to the sending module\r * @param Target A pointer to the hashing module\r * @param data The hex sequence to use. This should contain exactly 16 ASCII characters,\r * terminated by a NULL char.\r */\r HashHexRequest(Module* Me, Module* Target, const char* data) : HashRequest(Me, Target, data)\r {\r }\r};\r\r#endif\r\r
\ No newline at end of file
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2010 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#ifndef __HASH_H__
+#define __HASH_H__
+
+#include "modules.h"
+
+#define SHA256_DIGEST_SIZE (256 / 8)
+#define SHA256_BLOCK_SIZE (512 / 8)
+
+class HashProvider : public DataProvider
+{
+ public:
+ HashProvider(Module* mod, const std::string& Name) : DataProvider(mod, Name) {}
+ virtual std::string sum(const std::string& data) = 0;
+ inline std::string hexsum(const std::string& data)
+ {
+ return BinToHex(sum(data));
+ }
+
+ /** Allows the IVs for the hash to be specified. As the choice of initial IV is
+ * important for the security of a hash, this should not be used except to
+ * maintain backwards compatability. This also allows you to change the hex
+ * sequence from its default of "0123456789abcdef", which does not improve the
+ * strength of the output, but helps confuse those attempting to implement it.
+ *
+ * Only m_md5 implements this request; only m_cloaking should use it.
+ *
+ * Example:
+ * \code
+ * unsigned int iv[] = { 0xFFFFFFFF, 0x00000000, 0xAAAAAAAA, 0xCCCCCCCC };
+ * std::string result = Hash.sumIV(iv, "0123456789abcdef", "data");
+ * \endcode
+ */
+ virtual std::string sumIV(unsigned int* IV, const char* HexMap, const std::string &sdata) = 0;
+};
+
+#endif
+
projects / user / henk / code / inspircd.git / blobdiff