blowfish.cc File Reference

#include "blowfish.h"

Go to the source code of this file.

Macros
#define	N   16

Functions
void	Blowfish_Decrypt (BLOWFISH_CTX *ctx, uInt32 *xl, uInt32 *xr)
void	Blowfish_Encrypt (BLOWFISH_CTX *ctx, uInt32 *xl, uInt32 *xr)
void	Blowfish_Init (BLOWFISH_CTX *ctx, unsigned char *key, int keyLen)
static uInt32	F (BLOWFISH_CTX *ctx, uInt32 x)

Variables
static const uInt32	ORIG_P [16+2]
static const uInt32	ORIG_S [4][256]

Macro Definition Documentation

N

#define N   16

Definition at line 9 of file blowfish.cc.

Function Documentation

Blowfish_Decrypt()

void Blowfish_Decrypt	(	BLOWFISH_CTX *	ctx,
		uInt32 *	xl,
		uInt32 *	xr
	)

Definition at line 207 of file blowfish.cc.

                                                                 {
  uInt32 Xl;
  uInt32 Xr;
  uInt32 temp;
  short i;
 
  Xl = *xl;
  Xr = *xr;
 
  for (i = N + 1; i > 1; --i) {
    Xl = Xl ^ ctx->P[i];
    Xr = F(ctx, Xl) ^ Xr;
    /* Exchange Xl and Xr */
    temp = Xl;
    Xl = Xr;
    Xr = temp;
  }
 
  /* Exchange Xl and Xr */
  temp = Xl;
  Xl = Xr;
  Xr = temp;
  Xr = Xr ^ ctx->P[1];
  Xl = Xl ^ ctx->P[0];
  *xl = Xl;
  *xr = Xr;
}

References F(), mps_fire::i, N, BLOWFISH_CTX::P, and groupFilesInBlocks::temp.

Referenced by cond::auth::Cipher::bf_process_alloc().

Blowfish_Encrypt()

void Blowfish_Encrypt	(	BLOWFISH_CTX *	ctx,
		uInt32 *	xl,
		uInt32 *	xr
	)

Definition at line 181 of file blowfish.cc.

                                                                 {
  uInt32 Xl;
  uInt32 Xr;
  uInt32 temp;
  short i;
 
  Xl = *xl;
  Xr = *xr;
 
  for (i = 0; i < N; ++i) {
    Xl = Xl ^ ctx->P[i];
    Xr = F(ctx, Xl) ^ Xr;
    temp = Xl;
    Xl = Xr;
    Xr = temp;
  }
 
  temp = Xl;
  Xl = Xr;
  Xr = temp;
  Xr = Xr ^ ctx->P[N];
  Xl = Xl ^ ctx->P[N + 1];
  *xl = Xl;
  *xr = Xr;
}

References F(), mps_fire::i, N, BLOWFISH_CTX::P, and groupFilesInBlocks::temp.

Referenced by cond::auth::Cipher::bf_process_alloc(), and Blowfish_Init().

Blowfish_Init()

void Blowfish_Init	(	BLOWFISH_CTX *	ctx,
		unsigned char *	key,
		int	keyLen
	)

Definition at line 235 of file blowfish.cc.

                                                                      {
  int i, j, k;
  uInt32 data, datal, datar;
 
  for (i = 0; i < 4; i++) {
    for (j = 0; j < 256; j++)
      ctx->S[i][j] = ORIG_S[i][j];
  }
 
  j = 0;
 
  for (i = 0; i < N + 2; ++i) {
    data = 0x00000000;
 
    for (k = 0; k < 4; ++k) {
      data = (data << 8) | key[j];
      j = j + 1;
      if (j >= keyLen)
        j = 0;
    }
 
    ctx->P[i] = ORIG_P[i] ^ data;
  }
 
  datal = 0x00000000;
  datar = 0x00000000;
 
  for (i = 0; i < N + 2; i += 2) {
    Blowfish_Encrypt(ctx, &datal, &datar);
    ctx->P[i] = datal;
    ctx->P[i + 1] = datar;
  }
 
  for (i = 0; i < 4; ++i) {
    for (j = 0; j < 256; j += 2) {
      Blowfish_Encrypt(ctx, &datal, &datar);
      ctx->S[i][j] = datal;
      ctx->S[i][j + 1] = datar;
    }
  }
}

References Blowfish_Encrypt(), data, mps_fire::i, dqmiolumiharvest::j, dqmdumpme::k, crabWrapper::key, N, ORIG_P, ORIG_S, BLOWFISH_CTX::P, and BLOWFISH_CTX::S.

Referenced by cond::auth::Cipher::Cipher().

F()

uInt32 F ( BLOWFISH_CTX *  ctx, uInt32  x  )

static

Definition at line 163 of file blowfish.cc.

                                      {
  unsigned short a, b, c, d;
  uInt32 y;
 
  d = x & 0x00FF;
  x >>= 8;
  c = x & 0x00FF;
  x >>= 8;
  b = x & 0x00FF;
  x >>= 8;
  a = x & 0x00FF;
 
  y = ctx->S[0][a] + ctx->S[1][b];
  y = y ^ ctx->S[2][c];
  y = y + ctx->S[3][d];
  return y;
}

References a, b, HltBtagPostValidation_cff::c, ztail::d, BLOWFISH_CTX::S, vertices_cff::x, and detailsBasic3DVector::y.

Referenced by L1TConfigDumper::analyze(), Blowfish_Decrypt(), Blowfish_Encrypt(), HcalHaloAlgo::Calculate(), hitfit::Fourvec_Constraint_Calculator::calculate_constraints(), hitfit::Base_Constrainer::call_constraint_fcn(), TangentCircle::charge(), clangcms::EDMPluginDumper::checkASTDecl(), funct::SimplSumOrd< A, B, ProductStruct< C, D > >::combine(), funct::combine(), funct::RatioP1< A, B, Numerical< n > >::combine(), funct::Product< ProductStruct< F, G >, H >::combine(), funct::RatioP2< A, B, ProductStruct< C, D > >::combine(), ForwardDiskSectorBuilderFromDet::computeBounds(), ForwardRingDiskBuilderFromDet::computeBounds(), BarrelDetLayer::computeSurface(), ForwardDetLayer::computeSurface(), TKinFitter::converged(), DAClusterizerInZ::dump(), DAClusterizerInZ_vect::dump(), DAClusterizerInZT_vect::dump(), TrackerTreeGenerator::endJob(), hitfit::Fourvec_Constraint_Calculator::eval(), DAClusterizerInZ_vect::evalF(), TrackerValidationVariables::fillHitQuantities(), ApeEstimator::fillHitVariables(), ApeEstimator::fillTrackVariables(), reco::findMethod(), edm::refitem::findRefItem(), hitfit::Chisq_Constrainer::fit(), reco::componenthelper::SingleComponent< C, T, F >::get(), reco::componenthelper::MultipleComponents< C, T, F, S >::get(), TKinFitter::getF(), edm::refitem::GetRefPtrImpl< C, T, F, KEY >::getRefPtr_(), edm::refitem::GetRefPtrImpl< C, T, F, unsigned int >::getRefPtr_(), LayerMeasurements::groupedMeasurements(), HelixBarrelCylinderCrossing::HelixBarrelCylinderCrossing(), HTXS::HTXSstage1_2_Fine_to_HTXSstage1_2_Fine_FineIndex(), HTXS::HTXSstage1_2_Fine_to_index(), HTXS::HTXSstage1_2_to_HTXSstage1_2_FineIndex(), HTXS::HTXSstage1_2_to_index(), HTXS::HTXSstage1_to_HTXSstage1FineIndex(), HTXS::HTXSstage1_to_index(), MagneticField::inInverseGeV(), math::cholesky::invert11(), math::cholesky::invert22(), math::cholesky::invert33(), math::cholesky::invert44(), math::cholesky::invert55(), LayerMeasurements::measurements(), TkGluedMeasurementDet::measurements(), TkPhase2OTMeasurementDet::measurements(), TkPixelMeasurementDet::measurements(), TkStripMeasurementDet::measurements(), fastsim::HelixTrajectory::nextCrossingTimeC(), HBHEPulseShapeFlagSetter::PerformNominalFit(), ApeEstimator::radialPositionAndError2(), ApeTreeCreateDefault::sectorBuilder(), ApeEstimator::sectorBuilder(), CPPFCluster::timeRMS(), RPCCluster::timeRMS(), RPCCluster::yRMS(), and CPPFCluster::yRMS().

Variable Documentation

ORIG_P

const uInt32 ORIG_P[16+2]

static

Initial value:

= {0x243F6A88L,
                                      0x85A308D3L,
                                      0x13198A2EL,
                                      0x03707344L,
                                      0xA4093822L,
                                      0x299F31D0L,
                                      0x082EFA98L,
                                      0xEC4E6C89L,
                                      0x452821E6L,
                                      0x38D01377L,
                                      0xBE5466CFL,
                                      0x34E90C6CL,
                                      0xC0AC29B7L,
                                      0xC97C50DDL,
                                      0x3F84D5B5L,
                                      0xB5470917L,
                                      0x9216D5D9L,
                                      0x8979FB1BL}

Definition at line 12 of file blowfish.cc.

Referenced by Blowfish_Init().

ORIG_S

const uInt32 ORIG_S[4][256]

static

Definition at line 31 of file blowfish.cc.

Referenced by Blowfish_Init().