hash_id.cpp

含有多种公开密钥算法、多种块加密、多种数据流加密、多种HASH函数、多种CheckSum校验、多种MAC校验等几十种加密算法的程序

/*************************************************
* Hash Function Identification Source File       *
* (C) 1999-2002 The Botan Project                *
*************************************************/

#include <botan/hash_id.h>
#include <botan/lookup.h>

namespace Botan {

namespace PKCS_IDS {

const byte MD2_ID[] = {
0x30, 0x20, 0x30, 0x0C, 0x06, 0x08, 0x2A, 0x86, 0x48,
0x86, 0xF7, 0x0D, 0x02, 0x02, 0x05, 0x00, 0x04, 0x10 };

const byte MD5_ID[] = {
0x30, 0x20, 0x30, 0x0C, 0x06, 0x08, 0x2A, 0x86, 0x48,
0x86, 0xF7, 0x0D, 0x02, 0x05, 0x05, 0x00, 0x04, 0x10 };

const byte SHA1_ID[] = {
0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2B, 0x0E, 0x03,
0x02, 0x1A, 0x05, 0x00, 0x04, 0x14 };

const byte SHA2_256_ID[] = {
0x30, 0x31, 0x30, 0x0D, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01,
0x65, 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20 };

const byte SHA2_384_ID[] = {
0x30, 0x41, 0x30, 0x0D, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01,
0x65, 0x03, 0x04, 0x02, 0x02, 0x05, 0x00, 0x04, 0x30 };

const byte SHA2_512_ID[] = {
0x30, 0x31, 0x30, 0x0D, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01,
0x65, 0x03, 0x04, 0x02, 0x03, 0x05, 0x00, 0x04, 0x40 };

}

/*************************************************
* Return the HashID, as specified by PKCS        *
*************************************************/
SecureVector<byte> pkcs_hash_id(const std::string& name_or_alias)
   {
   std::string name = deref_alias(name_or_alias);

   SecureVector<byte> out;
   if(name == "MD2")
      out.set(PKCS_IDS::MD2_ID, sizeof(PKCS_IDS::MD2_ID));
   else if(name == "MD5")
      out.set(PKCS_IDS::MD5_ID, sizeof(PKCS_IDS::MD5_ID));
   else if(name == "SHA-1")
      out.set(PKCS_IDS::SHA1_ID, sizeof(PKCS_IDS::SHA1_ID));
   else if(name == "SHA2-256")
      out.set(PKCS_IDS::SHA2_256_ID, sizeof(PKCS_IDS::SHA2_256_ID));
   else if(name == "SHA2-384")
      out.set(PKCS_IDS::SHA2_384_ID, sizeof(PKCS_IDS::SHA2_384_ID));
   else if(name == "SHA2-512")
      out.set(PKCS_IDS::SHA2_512_ID, sizeof(PKCS_IDS::SHA2_512_ID));
   return out;
   }

/*************************************************
* Return the HashID, as specified by IEEE 1363   *
*************************************************/
byte ieee1363_hash_id(const std::string& name_or_alias)
   {
   std::string name = deref_alias(name_or_alias);

   byte hash_id = 0;
   if(name == "RIPEMD-160")
      hash_id = 0x31;
   else if(name == "RIPEMD-128")
      hash_id = 0x32;
   else if(name == "SHA-1")
      hash_id = 0x33;
   return hash_id;
   }

}