Provide simple asymmetric encryption for blinding of float values. More...

#include <SimpleEncrypter.h>

Inheritance diagram for xAOD::SimpleEncrypter:

Collaboration diagram for xAOD::SimpleEncrypter:

Public Types
typedef long long int	LLI_t
	Useful typedefs.
typedef unsigned long long int	ULLI_t

Public Member Functions
	SimpleEncrypter (const std::string &name="SimpleEncrypter")
	Main constructor.
virtual	~SimpleEncrypter ()
	Default destructor.
virtual std::pair< std::string, std::string >	genKeyPair ()
	Generate private and public keys.
virtual void	setPrivKey (std::string keystr)
	Set private key.
virtual void	setPubKey (std::string keystr)
	Set public key.
virtual std::string	getPrivKey () const
	Get private key.
virtual std::string	getPubKey () const
	Get public key.
virtual ULLI_t	encrypt (ULLI_t x)
	Encrypt a positive integer value.
virtual ULLI_t	decrypt (ULLI_t x)
	Decrypt a positive integer value.
virtual float	encrypt (float x)
	Encrypt a positive float value.
virtual float	decrypt (float x)
	Decrypt a positive float value.
void	setLevel (MSG::Level lvl)
	Change the current logging level.
Functions providing the same interface as AthMessaging
bool	msgLvl (const MSG::Level lvl) const
	Test the output level of the object.
MsgStream &	msg () const
	The standard message stream.
MsgStream &	msg (const MSG::Level lvl) const
	The standard message stream.

Private Member Functions
void	initMessaging () const
	Initialize our message level and MessageSvc.
Key generation utilities
Internally generate numeric representation of key pair
virtual void	genKeyPairInternal ()
virtual ULLI_t	genPrime () const
	Find a prime number.
virtual bool	isPrime (ULLI_t n) const
	Check for being a prime number.
virtual ULLI_t	greatestCommonDenominator (ULLI_t n1, ULLI_t n2) const
	Find greatest common denominator.
virtual ULLI_t	genCoprime (ULLI_t n) const
	Find a coprime number.
virtual ULLI_t	genDecryptionExponent (ULLI_t phi, ULLI_t e) const
	Find decryption exponent.
Key conversion utilities
Convert key to hex string
virtual std::string	keyToString (ULLI_t a, ULLI_t b) const
virtual std::pair< ULLI_t, ULLI_t >	decodeKeyString (std::string str) const
	Decode hex string to two integers.
float <-> int conversion utilities
Interpret bits of floating point number as integer
virtual ULLI_t	floatBitsToInt (float val) const
virtual float	intBitsToFloat (ULLI_t val) const
	Interpret bits of integer as floating point number.
Internal en-/decryption methods
Encrypt using format preserving encryption w.r.t. RSA modulus
ULLI_t	encryptFPECycle (ULLI_t a) const
ULLI_t	decryptFPECycle (ULLI_t a) const
	Decrypt using format preserving encryption w.r.t.
ULLI_t	encryptInternal (ULLI_t x) const
	Encrypt integer (internal).
ULLI_t	decryptInternal (ULLI_t x) const
	Decrypt integer (internal).
ULLI_t	powerMod (ULLI_t a, ULLI_t d, ULLI_t n) const
	Exponentiate a with d observing modulus n.
bool	isOkForEnc ()
	Check setup readiness for encryption.
bool	isOkForDec ()
	Check setup readiness for decryption.

Private Attributes
std::string	m_nm
	Message source name.
boost::thread_specific_ptr< MsgStream >	m_msg_tls
	MsgStream instance (a std::cout like with print-out levels).
std::atomic< IMessageSvc * >	m_imsg { nullptr }
	MessageSvc pointer.
std::atomic< MSG::Level >	m_lvl { MSG::NIL }
	Current logging level.
std::atomic_flag m_initialized	ATLAS_THREAD_SAFE = ATOMIC_FLAG_INIT
	Messaging initialized (initMessaging).
Internal member variables
RSA modulus: common part of both keys
ULLI_t	m_n
ULLI_t	m_e
	encryption exponent: public key part II
ULLI_t	m_d
	decryption exponent: private key part II
bool	m_isOkForEnc
	indicates that keys are set and range checks are ok
bool	m_isOkForDec

Static Private Attributes
Internal static consts
Approximate range for prime numbers to be generated in
static const ULLI_t	m_MAXRANGE
static const ULLI_t	m_MINRANGE
static const unsigned int	m_MAXHEXDIGITS
	maximum number of hex digits for key parts

Detailed Description

Provide simple asymmetric encryption for blinding of float values.

Author: Wolfgang Walkowiak <Wolfg.nosp@m.ang..nosp@m.Walko.nosp@m.wiak.nosp@m.@cern.nosp@m..ch.>

Provides asymmetric key encryption for blinding of positive float values. Internally it uses a simple RSA encryption of bits in the floating point numbers. This class is used by the BPhysBlindingTool.

Definition at line 36 of file SimpleEncrypter.h.

Member Typedef Documentation

◆ LLI_t

typedef long long int xAOD::SimpleEncrypter::LLI_t

Useful typedefs.

Definition at line 40 of file SimpleEncrypter.h.

◆ ULLI_t

typedef unsigned long long int xAOD::SimpleEncrypter::ULLI_t

Definition at line 41 of file SimpleEncrypter.h.

Constructor & Destructor Documentation

◆ SimpleEncrypter()

xAOD::SimpleEncrypter::SimpleEncrypter ( const std::string & name = "SimpleEncrypter" )

Main constructor.

Parameters

[in] name of instance

Definition at line 48 of file SimpleEncrypter.cxx.

                                                        :
    asg::AsgMessaging(name), m_n(0), m_e(0), m_d(0),
    m_isOkForEnc(false), m_isOkForDec(false) {
 
    // initialize random number generator
    srand(static_cast<unsigned>(time(0)));
  }

◆ ~SimpleEncrypter()

xAOD::SimpleEncrypter::~SimpleEncrypter ( )

virtual

Default destructor.

Definition at line 59 of file SimpleEncrypter.cxx.

                                    {
 
  }

Member Function Documentation

◆ decodeKeyString()

std::pair< SimpleEncrypter::ULLI_t, SimpleEncrypter::ULLI_t > xAOD::SimpleEncrypter::decodeKeyString ( std::string str ) const

privatevirtual

Decode hex string to two integers.

Definition at line 316 of file SimpleEncrypter.cxx.

                                                       {
    
    std::pair<ULLI_t, ULLI_t> keys(0,0);
    
    TString str(hstr);
    if (str.IsHex() && str.Length() > 3) {
      str.ToLower();
      unsigned int ndigits = strtoul(TString(str(0,2)).Data(), nullptr, 16);
      unsigned int ra = strtoul(TString(str(2,2)).Data(), nullptr, 16); 
      unsigned int rb = strtoul(TString(str(4,2)).Data(), nullptr, 16);
      if ( str.Length() == (int)(2*ndigits + 6) ) {
        keys.first  = strtoll(TString(str(ndigits+6-ra, ra)).Data(),
                              nullptr, 16);
        keys.second = strtoll(TString(str(2*ndigits+6-rb, rb)).Data(),
                              nullptr, 16);
      } else {
        ATH_MSG_ERROR("Private/public key must be a hex string of " <<
                      2*m_MAXHEXDIGITS+6 << " digits!");
      } // if Length()
    } else {
      ATH_MSG_ERROR("Private/public key must be a hex string of " <<
                    2*m_MAXHEXDIGITS+6 << " digits!");
    } // if IsHex() ...
    
    return keys;
  }

◆ decrypt() [1/2]

float xAOD::SimpleEncrypter::decrypt ( float x )

virtual

Decrypt a positive float value.

Parameters

[in] positive float value to be decrypted

Returns: encrypted float value

Definition at line 168 of file SimpleEncrypter.cxx.

                                        {
 
    float b = a;
 
    // As nan is a valid encrypted value, decrypt it as well.
    if ( a > 0. || std::isnan(a) ) {
      if ( isOkForDec() ) {
        ULLI_t ia = floatBitsToInt(a);
        ULLI_t ib = decryptFPECycle(ia);
        b = intBitsToFloat(ib);
      }
    } else {
      ATH_MSG_WARNING("Decrypt: Float value not positive: "
                      << a << Form(" (%a) !", a));
    } // if a > 0
    return b;
  }

◆ decrypt() [2/2]

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::decrypt ( ULLI_t x )

virtual

Decrypt a positive integer value.

Parameters

[in] unsigned integer value to be decrypted

Returns: encrypted unsigned integer value

Definition at line 136 of file SimpleEncrypter.cxx.

                                                         {
 
    ULLI_t b = a;
 
    if ( isOkForDec() ) {
      b = decryptFPECycle(a);
    }
    return b;
  }

◆ decryptFPECycle()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::decryptFPECycle ( ULLI_t a ) const

private

Decrypt using format preserving encryption w.r.t.

RSA modulus

Definition at line 389 of file SimpleEncrypter.cxx.

                                                                         {
 
    ULLI_t dec = 0;
    if ( enc > 0 ) {
      ULLI_t r = (int)(std::log2(m_n));
      ULLI_t rmask = pow(2,r)-1;
      ULLI_t d = enc & rmask;
      ULLI_t b = enc - d;
      do {
        d = decryptInternal(d);
      } while ( d > rmask );
      dec = d + b;
    } // if
    return dec;
  }

◆ decryptInternal()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::decryptInternal ( ULLI_t x ) const

private

Decrypt integer (internal).

Definition at line 414 of file SimpleEncrypter.cxx.

                                                                       {
    
    return powerMod(x, m_d, m_n);
  }

◆ encrypt() [1/2]

float xAOD::SimpleEncrypter::encrypt ( float x )

virtual

Encrypt a positive float value.

Parameters

[in] positive float value to be encrypted

Returns: encrypted float value

Definition at line 148 of file SimpleEncrypter.cxx.

                                        {
 
    float b = a;
 
    if ( a > 0. ) {
      if ( isOkForEnc() ) {
        ULLI_t ia = floatBitsToInt(a);
        ULLI_t ib = encryptFPECycle(ia);
        b = intBitsToFloat(ib);
      }
    } else {
      ATH_MSG_WARNING("Encrypt: Float value not positive: "
                      << a << Form(" (%a) !", a));
    } // if a > 0
    return b;
  }

◆ encrypt() [2/2]

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::encrypt ( ULLI_t x )

virtual

Encrypt a positive integer value.

Parameters

[in] unsigned integer value to be encrypted

Returns: encrypted unsigned integer value

Definition at line 124 of file SimpleEncrypter.cxx.

                                                         {
 
    ULLI_t b = a;
 
    if ( isOkForEnc() ) {
      b = encryptFPECycle(a);
    }
    return b;
  }

◆ encryptFPECycle()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::encryptFPECycle ( ULLI_t a ) const

private

Definition at line 370 of file SimpleEncrypter.cxx.

                                                                       {
    
    ULLI_t enc = 0;
    if ( a > 0 ) {
      ULLI_t r = (int)(std::log2(m_n));
      ULLI_t rmask = pow(2,r)-1;
      ULLI_t c = a & rmask;
      ULLI_t b = a - c;
      do {
        c = encryptInternal(c);
      } while ( c > rmask );    
      enc = b + c;
    } // if
    return enc;
  }

◆ encryptInternal()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::encryptInternal ( ULLI_t x ) const

private

Encrypt integer (internal).

Definition at line 407 of file SimpleEncrypter.cxx.

                                                                       {
    
    return powerMod(x, m_e, m_n);
  }

◆ floatBitsToInt()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::floatBitsToInt ( float val ) const

privatevirtual

Definition at line 346 of file SimpleEncrypter.cxx.

                                                 {
    static_assert(sizeof(float) == sizeof(std::uint32_t),"This code assumes a 32-bit float");
    if (val < 0.0F) {
      ATH_MSG_ERROR("Float value needs to be positive!");
      return 0;
    }
    return std::bit_cast<std::uint32_t>(val);
  }

◆ genCoprime()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::genCoprime ( ULLI_t n ) const

privatevirtual

Find a coprime number.

Definition at line 266 of file SimpleEncrypter.cxx.

                                                                  {
    
    // make sure coprime is larger than 5th Fermat number (2^16+1 = 65537)
    //coverity[dont_call]
    ULLI_t i = (65537 + rand()) % (m_MAXRANGE -1);
    do {
      ++i;
    } while (greatestCommonDenominator(n, i) != 1);
    return i;
  }

◆ genDecryptionExponent()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::genDecryptionExponent	(	ULLI_t	phi,
		ULLI_t	e ) const

privatevirtual

Find decryption exponent.

Definition at line 280 of file SimpleEncrypter.cxx.

                                                                   {
    
    for (ULLI_t i=1; i<m_MAXRANGE; ++i) {
      if ( ((phi * i + 1) % e) == 0 ) {
        return (ULLI_t)((phi * i + 1) / e);
      }
    }
    return 0;
  }

◆ genKeyPair()

std::pair< std::string, std::string > xAOD::SimpleEncrypter::genKeyPair ( )

virtual

Generate private and public keys.

Returns: key pair as string: [private key, public key]

Definition at line 66 of file SimpleEncrypter.cxx.

                                                            {
 
    // default preset
    std::pair<std::string, std::string> keys =
      std::make_pair("__NO_PRIV_KEY__", "__NO_PUB_KEY__");
 
    // generate keys
    genKeyPairInternal();
 
    if ( isOkForEnc() && isOkForDec() ) {
      keys = std::make_pair(getPrivKey(), getPubKey());
    }
    return keys;
  }

◆ genKeyPairInternal()

void xAOD::SimpleEncrypter::genKeyPairInternal ( )

privatevirtual

Definition at line 193 of file SimpleEncrypter.cxx.

                                           {
 
    // Generate prime numbers p != q
    ULLI_t p(1);
    ULLI_t q(1);
    // Euler's phi function
    ULLI_t phi(1);
    
    // reset encryption and decryption exponent
    m_e = 0;
    m_d = 0;
    while ( p == q || m_e < 2 || m_e >= phi || m_d < 2
            || m_e*m_d % phi != 1 ) {
      double dlog2 = 0.;
      while ( p == q || dlog2 < 0.1 || dlog2 > 30. ) {
        p = genPrime();
        q = genPrime();
        dlog2 = fabs(log2(p)-log2(q));
      } // inner while loop
      phi = (p-1)*(q-1);
      m_n = p*q;
      m_e = genCoprime(phi);
      m_d = genDecryptionExponent(phi, m_e);
    } // outer while loop
    m_isOkForDec = false;
    m_isOkForEnc = false;
  }

◆ genPrime()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::genPrime ( ) const

privatevirtual

Find a prime number.

Definition at line 223 of file SimpleEncrypter.cxx.

                                                        {
    //coverity[dont_call]
    ULLI_t t = (m_MINRANGE + rand()) % (m_MAXRANGE-1);
    do {
      t++;
    } while ( !isPrime(t) || t < m_MINRANGE );
    return t;
  }

◆ getPrivKey()

std::string xAOD::SimpleEncrypter::getPrivKey ( ) const

virtual

Get private key.

Returns: hex string with private key

Definition at line 110 of file SimpleEncrypter.cxx.

                                              {
  
    return keyToString(m_n, m_d);
  }

◆ getPubKey()

std::string xAOD::SimpleEncrypter::getPubKey ( ) const

virtual

Get public key.

Returns: hex string with public key

Definition at line 117 of file SimpleEncrypter.cxx.

                                             {
 
    return keyToString(m_e, m_n);    
  }

◆ greatestCommonDenominator()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::greatestCommonDenominator	(	ULLI_t	n1,
		ULLI_t	n2 ) const

privatevirtual

Find greatest common denominator.

Definition at line 251 of file SimpleEncrypter.cxx.

                                                                       {
 
    std::vector<LLI_t> r;
    LLI_t i = 1;
    r.push_back(std::max(n1, n2));
    r.push_back(std::min(n1, n2));
    while (r[i] != 0) {
      ++i;
      r.push_back(r[i-2] % r[i-1]);
    }
    return r[i-1];
  }

◆ initMessaging()

void AthMessaging::initMessaging ( ) const

privateinherited

Initialize our message level and MessageSvc.

This method should only be called once.

Definition at line 39 of file AthMessaging.cxx.

{
  m_imsg = Athena::getMessageSvc();
  // If user did not set an explicit level, set a default
  if (m_lvl == MSG::NIL) {
    m_lvl = m_imsg ?
      static_cast<MSG::Level>( m_imsg.load()->outputLevel(m_nm) ) :
      MSG::INFO;
  }
}

◆ intBitsToFloat()

float xAOD::SimpleEncrypter::intBitsToFloat ( ULLI_t val ) const

privatevirtual

Interpret bits of integer as floating point number.

Definition at line 358 of file SimpleEncrypter.cxx.

                                                  {
    static_assert(sizeof(float) == sizeof(std::uint32_t),"This code assumes a 32-bit float");
    if (val > std::numeric_limits<std::uint32_t>::max()) {
      ATH_MSG_WARNING("Value does not fit in float bit representation: "<< val);
      return 0.0F;
    }
    return std::bit_cast<float>(static_cast<std::uint32_t>(val));
  }

◆ isOkForDec()

bool xAOD::SimpleEncrypter::isOkForDec ( )

private

Check setup readiness for decryption.

Definition at line 464 of file SimpleEncrypter.cxx.

                                   {
 
    if ( !m_isOkForDec ) {
      if ( m_n > 0 && m_d > 1 && m_d < m_n ) {
        m_isOkForDec = true;
      } else {
        ATH_MSG_ERROR("Setup not OK for decryption: private key set?");
      }
    } // if ! m_isOkForDec
    
    return m_isOkForDec;
  }

◆ isOkForEnc()

bool xAOD::SimpleEncrypter::isOkForEnc ( )

private

Check setup readiness for encryption.

Definition at line 448 of file SimpleEncrypter.cxx.

                                   {
 
    if ( !m_isOkForEnc ) {
      if ( m_n > 0 && m_e > 1 && m_e < m_n ) {
        m_isOkForEnc = true;
      } else {
        ATH_MSG_ERROR("Setup not OK for encryption: public key set?");
      }
    } // if ! m_isOkForEnc
    
    return m_isOkForEnc;
  }

◆ isPrime()

bool xAOD::SimpleEncrypter::isPrime ( ULLI_t n ) const

privatevirtual

Check for being a prime number.

Definition at line 234 of file SimpleEncrypter.cxx.

                                              {
    
    bool isPrime = true;
    if (n != 2) {
      for (LLI_t i = 2; i < (LLI_t)sqrt(n) + 1; ++i) {
        if (n % i == 0) {
          isPrime = false;
          break;
        }
      }
    }
    return isPrime;
  }

◆ keyToString()

std::string xAOD::SimpleEncrypter::keyToString	(	ULLI_t	a,
		ULLI_t	b ) const

privatevirtual

Definition at line 292 of file SimpleEncrypter.cxx.

                                                                 {
 
    // length of keys w.r.t. hex digits
    unsigned int ra = (unsigned int)(log(a)/log(16.))+1;
    unsigned int rb = (unsigned int)(log(b)/log(16.))+1;
 
    // random numbers for padding
    //coverity[dont_call]
    unsigned int r1 = rand() & ((1 << 4*(m_MAXHEXDIGITS-ra))-1);
    //coverity[dont_call]
    unsigned int r2 = rand() & ((1 << 4*(m_MAXHEXDIGITS-rb))-1);
 
    // format string
    TString tstr = Form("%02x%02x%02x%0*x%0*llx%0*x%0*llx",
                        m_MAXHEXDIGITS, ra, rb,
                        m_MAXHEXDIGITS-ra, r1, ra, a,
                        m_MAXHEXDIGITS-rb, r2, rb, b);
    
    return std::string(tstr.Data());
  }

◆ msg() [1/2]

MsgStream & asg::AsgMessaging::msg ( ) const

inherited

The standard message stream.

Returns: A reference to the default message stream of this object.

Definition at line 49 of file AsgMessaging.cxx.

                                      {
#ifndef XAOD_STANDALONE
      return ::AthMessaging::msg();
#else // not XAOD_STANDALONE
      return m_msg;
#endif // not XAOD_STANDALONE
   }

◆ msg() [2/2]

MsgStream & asg::AsgMessaging::msg ( const MSG::Level lvl ) const

inherited

The standard message stream.

Parameters

lvl	The message level to set the stream to

Returns: A reference to the default message stream, set to level "lvl"

Definition at line 57 of file AsgMessaging.cxx.

                                                          {
#ifndef XAOD_STANDALONE
      return ::AthMessaging::msg( lvl );
#else // not XAOD_STANDALONE
      m_msg << lvl;
      return m_msg;
#endif // not XAOD_STANDALONE
   }

◆ msgLvl()

bool asg::AsgMessaging::msgLvl ( const MSG::Level lvl ) const

inherited

Test the output level of the object.

Parameters

lvl	The message level to test against

Returns: boolean Indicting if messages at given level will be printed; true If messages at level "lvl" will be printed

Definition at line 41 of file AsgMessaging.cxx.

                                                       {
#ifndef XAOD_STANDALONE
      return ::AthMessaging::msgLvl( lvl );
#else // not XAOD_STANDALONE
      return m_msg.msgLevel( lvl );
#endif // not XAOD_STANDALONE
   }

◆ powerMod()

SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::powerMod	(	ULLI_t	a,
		ULLI_t	d,
		ULLI_t	n ) const

private

Exponentiate a with d observing modulus n.

Definition at line 422 of file SimpleEncrypter.cxx.

                                                              {
 
    int    bin[sizeof(ULLI_t)*CHAR_BIT];
    ULLI_t dec[sizeof(ULLI_t)*CHAR_BIT];
    
    ULLI_t r = (ULLI_t)(std::log2(d))+1;
    ULLI_t tmp = d;
    // decompose exponent into binary number (reverse order!)
    for (ULLI_t i=0; i < r; ++i) {
      bin[r-i-1] = tmp % 2;
      tmp = (LLI_t)(tmp/2);
    } // for i
    
    // perform the exponentiation taking modulus into account
    dec[0] = a;
    for (ULLI_t i=1; i < r; ++i) {
      ULLI_t d2 = dec[i-1]*dec[i-1] % n;
      if ( bin[i] > 0 ) d2 *= a;
      dec[i] = d2 % n;
    } // for i
    
    return dec[r-1];
  }

◆ setLevel()

void AthMessaging::setLevel ( MSG::Level lvl )

inherited

Change the current logging level.

Use this rather than msg().setLevel() for proper operation with MT.

Definition at line 28 of file AthMessaging.cxx.

{
  m_lvl = lvl;
}

◆ setPrivKey()

void xAOD::SimpleEncrypter::setPrivKey ( std::string keystr )

virtual

Set private key.

Parameters

[in] hex string with private key

Definition at line 84 of file SimpleEncrypter.cxx.

                                                   {
  
    std::pair<ULLI_t, ULLI_t> keys = decodeKeyString(std::move(keystr));
    
    if ( m_n > 0 && m_n != keys.first ) {
      ATH_MSG_WARNING("RSA module already set!");
    }
    m_n = keys.first;
    m_d = keys.second;
    m_isOkForDec = false;
  }

◆ setPubKey()

void xAOD::SimpleEncrypter::setPubKey ( std::string keystr )

virtual

Set public key.

Parameters

[in] hex string with public key

Definition at line 98 of file SimpleEncrypter.cxx.

                                                  {
    std::pair<ULLI_t, ULLI_t> keys = decodeKeyString(std::move(keystr));
    if ( m_n > 0 && m_n != keys.second ) {
      ATH_MSG_WARNING("RSA module already set!");
    }
    m_e = keys.first;
    m_n = keys.second;
    m_isOkForEnc = false;
  }

Member Data Documentation

◆ ATLAS_THREAD_SAFE

std::atomic_flag m_initialized AthMessaging::ATLAS_THREAD_SAFE = ATOMIC_FLAG_INIT

mutableprivateinherited

Messaging initialized (initMessaging).

Definition at line 141 of file AthMessaging.h.

◆ m_d

ULLI_t xAOD::SimpleEncrypter::m_d

private

decryption exponent: private key part II

Definition at line 233 of file SimpleEncrypter.h.

◆ m_e

ULLI_t xAOD::SimpleEncrypter::m_e

private

encryption exponent: public key part II

Definition at line 231 of file SimpleEncrypter.h.

◆ m_imsg

std::atomic<IMessageSvc*> AthMessaging::m_imsg { nullptr }

mutableprivateinherited

MessageSvc pointer.

Definition at line 135 of file AthMessaging.h.

135{ nullptr };

◆ m_isOkForDec

bool xAOD::SimpleEncrypter::m_isOkForDec

private

Definition at line 237 of file SimpleEncrypter.h.

◆ m_isOkForEnc

bool xAOD::SimpleEncrypter::m_isOkForEnc

private

indicates that keys are set and range checks are ok

Definition at line 236 of file SimpleEncrypter.h.

◆ m_lvl

std::atomic<MSG::Level> AthMessaging::m_lvl { MSG::NIL }

mutableprivateinherited

Current logging level.

Definition at line 138 of file AthMessaging.h.

138{ MSG::NIL };

◆ m_MAXHEXDIGITS

const unsigned int xAOD::SimpleEncrypter::m_MAXHEXDIGITS

staticprivate

Initial value:

=

(unsigned int)(log(pow(SimpleEncrypter::m_MAXRANGE,2))/log(16.))+3

maximum number of hex digits for key parts

Definition at line 223 of file SimpleEncrypter.h.

◆ m_MAXRANGE

const SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::m_MAXRANGE

staticprivate

Initial value:

=

(SimpleEncrypter::ULLI_t)pow(static_cast<double>(std::numeric_limits<ULLI_t>::max()), 0.25)

Definition at line 220 of file SimpleEncrypter.h.

◆ m_MINRANGE

const SimpleEncrypter::ULLI_t xAOD::SimpleEncrypter::m_MINRANGE

staticprivate

Initial value:

=

(SimpleEncrypter::ULLI_t)SimpleEncrypter::m_MAXRANGE/10

Definition at line 221 of file SimpleEncrypter.h.

◆ m_msg_tls

boost::thread_specific_ptr<MsgStream> AthMessaging::m_msg_tls

mutableprivateinherited

MsgStream instance (a std::cout like with print-out levels).

Definition at line 132 of file AthMessaging.h.

◆ m_n

ULLI_t xAOD::SimpleEncrypter::m_n

private

Definition at line 229 of file SimpleEncrypter.h.

◆ m_nm

std::string AthMessaging::m_nm

privateinherited

Message source name.

Definition at line 129 of file AthMessaging.h.

The documentation for this class was generated from the following files:

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Static Private Attributes

Detailed Description

Member Typedef Documentation

◆ LLI_t

◆ ULLI_t

Constructor & Destructor Documentation

◆ SimpleEncrypter()

◆ ~SimpleEncrypter()

Member Function Documentation

◆ decodeKeyString()

◆ decrypt() [1/2]

◆ decrypt() [2/2]

◆ decryptFPECycle()

◆ decryptInternal()

◆ encrypt() [1/2]

◆ encrypt() [2/2]

◆ encryptFPECycle()

◆ encryptInternal()

◆ floatBitsToInt()

◆ genCoprime()

◆ genDecryptionExponent()

◆ genKeyPair()

◆ genKeyPairInternal()

◆ genPrime()

◆ getPrivKey()

◆ getPubKey()

◆ greatestCommonDenominator()

◆ initMessaging()

◆ intBitsToFloat()

◆ isOkForDec()

◆ isOkForEnc()

◆ isPrime()

◆ keyToString()

◆ msg() [1/2]

◆ msg() [2/2]

◆ msgLvl()

◆ powerMod()

◆ setLevel()

◆ setPrivKey()

◆ setPubKey()

Member Data Documentation

◆ ATLAS_THREAD_SAFE

◆ m_d

◆ m_e

◆ m_imsg

◆ m_isOkForDec

◆ m_isOkForEnc

◆ m_lvl

◆ m_MAXHEXDIGITS

◆ m_MAXRANGE

◆ m_MINRANGE

◆ m_msg_tls

◆ m_n

◆ m_nm