int main()
{
FILE *fp;
int ep,m,a,b,c;
miracl *mip;
epoint *g,*public;
char ifname[50],ofname[50];
big a2,a6,q,x,y,v,u1,u2,r,s,hash;
/* get public data */
fp=fopen("common2.ecs","r");
if (fp==NULL)
{
printf("file common2.ecs does not exist\n");
return 0;
}
fscanf(fp,"%d\n",&m);
mip=mirsys(3+abs(m)/MIRACL,0);
a2=mirvar(0);
a6=mirvar(0);
q=mirvar(0);
x=mirvar(0);
y=mirvar(0);
v=mirvar(0);
u1=mirvar(0);
u2=mirvar(0);
s=mirvar(0);
r=mirvar(0);
hash=mirvar(0);
mip->IOBASE=16;
cinnum(a2,fp);
cinnum(a6,fp);
cinnum(q,fp);
cinnum(x,fp);
cinnum(y,fp);
mip->IOBASE=10;
fscanf(fp,"%d\n",&a);
fscanf(fp,"%d\n",&b);
fscanf(fp,"%d\n",&c);
fclose(fp);
ecurve2_init(m,a,b,c,a2,a6,FALSE,MR_PROJECTIVE); /* initialise curve */
g=epoint2_init();
epoint2_set(x,y,0,g); /* initialise point of order q */
/* get public key of signer */
fp=fopen("public.ecs","r");
if (fp==NULL)
{
printf("file public.ecs does not exist\n");
return 0;
}
fscanf(fp,"%d",&ep);
cinnum(x,fp);
fclose(fp);
public=epoint2_init();
/*
* Class: edu_biu_scapi_primitives_dlog_miracl_MiraclDlogECF2m
* Method: computeF2mExponentiateWithPrecomputedValues
* Signature: (JJ[B)J
* This function wraps the actual computation of the exponentation with precomputed values for the requested base for Dlog groups over F2m. It gets as a parameter
* a pointer to the ebrick structure created by a previous call to initFpExponentiateWithPrecomputedValues. This implies that initFpExponentiateWithPrecomputedValues
* MUST have been called prior to this function for the same base.
*/
JNIEXPORT jlong JNICALL Java_edu_biu_scapi_primitives_dlog_miracl_MiraclDlogECF2m_computeF2mExponentiateWithPrecomputedValues
(JNIEnv * env, jobject, jlong mipp, jlong ebrick2Pointer, jbyteArray exponent){
//private native long computeF2mExponentiateWithPrecomputedValues(long mip, long ebrickPointer, byte[] exponent);
//translate parameters to miracl notation
miracl* mip = (miracl*)mipp;
big exponentB = byteArrayToMiraclBig(env, mip, exponent);
//(x,y) are the coordinates of the point which is the result of the exponentiation
big x, y;
x = mirvar(mip, 0);
y = mirvar(mip, 0);
//calculates the required exponent
mul2_brick(mip, (ebrick2*)ebrick2Pointer, exponentB, x, y);
epoint* p = new epoint();
p = epoint_init(mip);
bool valid = epoint2_set(mip, x, y, 0, p);
mirkill(x);
mirkill(y);
return (jlong)p;
}
/*
* Returns the identity point
*/
epoint* getIdentity(miracl* mip, int field){
big x,y;
epoint* identity = epoint_init(mip);
x = mirvar(mip, 0);
y = mirvar(mip, 0);
//creation of the point depends on the field type
if (field == 1)
epoint_set(mip, x, y, 0, identity);
else
epoint2_set(mip, x, y, 0, identity);
mirkill(x);
mirkill(y);
return identity;
}
/* function createInfinityF2mPoint : This function creates the infinity point in F2m
* param m : miracl pointer
* return : true if the point is on the curve, false otherwise
*/
JNIEXPORT jlong JNICALL Java_edu_biu_scapi_primitives_dlog_miracl_MiraclDlogECF2m_createInfinityF2mPoint
(JNIEnv *env, jobject obj, jlong m){
/* convert the accepted parameters to MIRACL parameters*/
miracl* mip = (miracl*)m;
//create a point with the coordinates 0,0 which is the infinity point in miracl implementation
big x,y;
epoint* p = epoint_init(mip);
x = mirvar(mip, 0);
y = mirvar(mip, 0);
epoint2_set(mip, x, y, 0, (epoint*)p);
mirkill(x);
mirkill(y);
return (jlong) p;
}
/* function createF2mPoint : This function creates a point of elliptic curve over F2m according to the accepted values
* param m : pointer to mip
* param xVal : x value of the point
* param yVal : y value of the point
* param validity : indicates if the point is valid for the current curve or not
* return : A pointer to the created point.
*/
JNIEXPORT jlong JNICALL Java_edu_biu_scapi_primitives_dlog_miracl_ECF2mPointMiracl_createF2mPoint
(JNIEnv *env, jobject obj, jlong m, jbyteArray xVal, jbyteArray yVal){
/* convert the accepted parameters to MIRACL parameters*/
miracl* mip = (miracl*)m;
/* create the point with x,y values */
epoint* p = epoint_init(mip);
big x = byteArrayToMiraclBig(env, mip, xVal);
big y = byteArrayToMiraclBig(env, mip, yVal);
bool valid = epoint2_set(mip, x, y, 0, p);
mirkill(x);
mirkill(y);
if (!valid) {
epoint_free(p);
return 0;
}
return (jlong) p; // return the point
}
/* function invertF2mPoint : This function return the inverse of ec point
* param m : miracl pointer
* param p1 : ellitic curve point
* return : the inverse point
*/
JNIEXPORT jlong JNICALL Java_edu_biu_scapi_primitives_dlog_miracl_MiraclDlogECF2m_invertF2mPoint
(JNIEnv *env, jobject obj, jlong m, jlong p1){
/* convert the accepted parameters to MIRACL parameters*/
miracl* mip = (miracl*)m;
big x, y;
epoint* p2;
x= mirvar(mip, 0);
y= mirvar(mip, 0);
//init the result point and copy p1 values to it
p2 = epoint_init(mip);
epoint2_get(mip, (epoint*)p1, x, y);
epoint2_set(mip, x,y,0, p2);
mirkill(x);
mirkill(y);
//inverse the point
epoint2_negate(mip, p2);
return (jlong)p2; // return the inverse
}
/* function isF2mMember : This function checks if the accepted point is a point of the current elliptic curve (over F2m)
* param m : miracl pointer
* param point : ellitic curve point to check
* return : true if the point is on the curve, false otherwise
*/
JNIEXPORT jboolean JNICALL Java_edu_biu_scapi_primitives_dlog_miracl_MiraclDlogECF2m_isF2mMember
(JNIEnv *env, jobject obj, jlong m, jlong point){
int member = 0;
/* convert the accepted parameters to MIRACL parameters*/
miracl* mip = (miracl*)m;
/* get the x,y, values of the point */
big x,y;
epoint* p = epoint_init(mip);
x = mirvar(mip, 0);
y = mirvar(mip, 0);
epoint2_get(mip, (epoint*)point, x, y);
/* try to create another point with those values. if succeded - the point is in the curve */
if (epoint2_set(mip, x, y, 0, p)==1)
member = 1;
mirkill(x);
mirkill(y);
return member;
}
/* function multiplyF2mPoints : This function multiplies two point of ec over F2m
* param m : miracl pointer
* param p1 : ellitic curve point
* param p2 : ellitic curve point
* return : the multiplication result
*/
JNIEXPORT jlong JNICALL Java_edu_biu_scapi_primitives_dlog_miracl_MiraclDlogECF2m_multiplyF2mPoints
(JNIEnv *env, jobject obj, jlong m, jlong p1, jlong p2){
big x, y;
epoint *p3;
/* convert the accepted parameters to MIRACL parameters*/
miracl* mip = (miracl*)m;
x= mirvar(mip, 0);
y= mirvar(mip, 0);
/* create the result point with the values of p2. This way, p2 values won't damage in the multiplication operation */
p3 = epoint_init(mip);
epoint2_get(mip, (epoint*)p2, x, y);
epoint2_set(mip, x,y,0, p3);
mirkill(x);
mirkill(y);
/* The multiply operation is converted to addition because miracl treat EC as additive group */
ecurve2_add(mip, (epoint*)p1, p3);
return (jlong)p3; //return the result
}
int main()
{
int ia,ib,promptr;
epoint *PA,*PB;
big A,B,a,b,q,pa,pb,key,x,y;
ebrick2 binst;
miracl instance; /* create miracl workspace on the stack */
/* Specify base 16 here so that HEX can be read in directly without a base-change */
miracl *mip=mirsys(&instance,WORDS*HEXDIGS,16); /* size of bigs is fixed */
char mem_big[MR_BIG_RESERVE(10)]; /* we need 10 bigs... */
char mem_ecp[MR_ECP_RESERVE(2)]; /* ..and two elliptic curve points */
memset(mem_big, 0, MR_BIG_RESERVE(10)); /* clear the memory */
memset(mem_ecp, 0, MR_ECP_RESERVE(2));
A=mirvar_mem(mip, mem_big, 0); /* Initialise big numbers */
B=mirvar_mem(mip, mem_big, 1);
pa=mirvar_mem(mip, mem_big, 2);
pb=mirvar_mem(mip, mem_big, 3);
key=mirvar_mem(mip, mem_big, 4);
x=mirvar_mem(mip, mem_big, 5);
y=mirvar_mem(mip, mem_big, 6);
q=mirvar_mem(mip,mem_big,7);
a=mirvar_mem(mip, mem_big, 8);
b=mirvar_mem(mip, mem_big, 9);
PA=epoint_init_mem(mip, mem_ecp, 0); /* initialise Elliptic Curve points */
PB=epoint_init_mem(mip, mem_ecp, 1);
irand(mip, 3L); /* change parameter for different random numbers */
promptr=0;
init_big_from_rom(B,WORDS,rom,WORDS*4,&promptr); /* Read in curve parameter B from ROM */
/* don't need q or G(x,y) (we have precomputed table from it) */
init_big_from_rom(q,WORDS,rom,WORDS*4,&promptr);
init_big_from_rom(x,WORDS,rom,WORDS*4,&promptr);
init_big_from_rom(y,WORDS,rom,WORDS*4,&promptr);
convert(mip,1,A); /* set A=1 */
/* Create precomputation instance from precomputed table in ROM */
ebrick2_init(&binst,prom,A,B,CURVE_M,CURVE_A,CURVE_B,CURVE_C,WINDOW,CURVE_M);
/* offline calculations */
bigbits(mip,CURVE_M,a); /* A's random number */
ia=mul2_brick(mip,&binst,a,pa,pa); /* a*G =(pa,ya), ia is sign of ya */
bigbits(mip,CURVE_M,b); /* B's random number */
ib=mul2_brick(mip,&binst,b,pb,pb); /* b*G =(pb,yb), ib is sign of yb */
/* online calculations */
ecurve2_init(mip,CURVE_M,CURVE_A,CURVE_B,CURVE_C,A,B,FALSE,MR_PROJECTIVE);
epoint2_set(mip,pb,pb,ib,PB); /* decompress PB */
ecurve2_mult(mip,a,PB,PB);
epoint2_get(mip,PB,key,key);
/* since internal base is HEX, can use otnum instead of cotnum - avoiding a base change */
printf("Alice's Key= ");
otnum(mip,key,stdout);
epoint2_set(mip,pa,pa,ia,PB); /* decompress PA */
ecurve2_mult(mip,b,PB,PB);
epoint2_get(mip,PB,key,key);
printf("Bob's Key= ");
otnum(mip,key,stdout);
/* clear the memory */
memset(mem_big, 0, MR_BIG_RESERVE(10));
memset(mem_ecp, 0, MR_ECP_RESERVE(2));
return 0;
}
int main()
{
FILE *fp;
int m,a,b,c;
big e,a2,a6,x,y,r;
epoint *g;
ebrick2 binst;
int i,d,ndig,nb,best,time,store,base;
miracl *mip=mirsys(50,0);
e=mirvar(0);
a2=mirvar(0);
a6=mirvar(0);
x=mirvar(0);
y=mirvar(0);
r=mirvar(0);
fp=fopen("common2.ecs","r");
fscanf(fp,"%d\n",&m);
mip->IOBASE=16;
cinnum(a2,fp);
cinnum(a6,fp);
cinnum(r,fp);
cinnum(x,fp);
cinnum(y,fp);
mip->IOBASE=10;
fscanf(fp,"%d\n",&a);
fscanf(fp,"%d\n",&b);
fscanf(fp,"%d\n",&c);
printf("modulus is %d bits in length\n",m);
printf("Enter size of exponent in bits = ");
scanf("%d",&nb);
getchar();
ebrick2_init(&binst,x,y,a2,a6,m,a,b,c,nb);
printf("%d big numbers have been precomputed and stored\n",binst.store);
bigdig(nb,2,e); /* random exponent */
printf("naive method\n");
ecurve2_init(m,a,b,c,a2,a6,FALSE,MR_PROJECTIVE);
g=epoint2_init();
epoint2_set(x,y,0,g);
ecurve2_mult(e,g,g);
epoint2_get(g,x,y);
cotnum(x,stdout);
cotnum(y,stdout);
zero(x); zero(y);
printf("Brickel et al method\n");
mul2_brick(&binst,e,x,y);
ebrick2_end(&binst);
cotnum(x,stdout);
cotnum(y,stdout);
return 0;
}
int main()
{
int j,k;
big a,b,x,y,p,A2;
time_t seed;
epoint *g;
double tr1,tr2,ts,tv1,tv2,tp,td;
#ifndef MR_NOFULLWIDTH
miracl *mip=mirsys(300,0);
#else
miracl *mip=mirsys(300,MAXBASE);
#endif
p=mirvar(0);
a=mirvar(-3);
b=mirvar(0);
x=mirvar(1);
y=mirvar(0);
A2=mirvar(0);
mip->IOBASE=60;
time(&seed);
irand((long)seed);
printf("MIRACL - %d bit version\n",MIRACL);
#ifdef MR_LITTLE_ENDIAN
printf("Little Endian processor\n");
#endif
#ifdef MR_BIG_ENDIAN
printf("Big Endian processor\n");
#endif
#ifdef MR_NOASM
printf("C-Only Version of MIRACL\n");
#else
printf("Using some assembly language\n");
#endif
#ifdef MR_STRIPPED_DOWN
printf("Stripped down version of MIRACL - no error messages\n");
#endif
#ifdef MR_KCM
k=MR_KCM*MIRACL;
printf("Using KCM method \n");
printf("Optimized for %d, %d, %d, %d...etc. bit moduli\n",k,k*2,k*4,k*8);
#endif
#ifdef MR_COMBA
k=MR_COMBA*MIRACL;
printf("Using COMBA method \n");
printf("Optimized for %d bit moduli\n",k);
#endif
#ifdef MR_PENTIUM
printf("Floating-point co-processor arithmetic used for Pentium\n");
#endif
#ifndef MR_KCM
#ifndef MR_COMBA
#ifndef MR_PENTIUM
printf("No special optimizations\n");
#endif
#endif
#endif
printf("Precomputation uses fixed Window size = %d\n",WINDOW);
printf("So %d values are precomputed and stored\n",(1<<WINDOW));
#ifdef MR_NOFULLWIDTH
printf("No Fullwidth base possible\n");
#else
printf("NOTE: No optimizations/assembly language apply to GF(2^m) Elliptic Curves\n");
#endif
printf("NOTE: times are elapsed real-times - so make sure nothing else is running!\n\n");
printf("Modular exponentiation benchmarks - calculating g^e mod p\n");
printf("From these figures it should be possible to roughly estimate the time\n");
printf("required for your favourite PK algorithm, RSA, DSA, DH, etc.\n");
printf("Key R - random base bits/random exponent bits \n");
printf(" V - random base bits/(small exponent e) \n");
printf(" S - (small base g) /random exponent bits \n");
printf(" P - exponentiation with precomputation (fixed base g)\n");
printf(" D - double exponentiation g^e.a^b mod p\n");
printf("F3 = 257, F4 = 65537\n");
printf("RSA - Rivest-Shamir-Adleman\n");
printf("DH - Diffie Hellman Key exchange\n");
printf("DSA - Digital Signature Algorithm\n");
printf("\n512 bit prime....\n");
cinstr(p,p512);
k=512;
j=160;
tr1=powers(k,j,p);
td=powers_double(k,j,p);
tr2=powers(k,k,p);
ts=powers_small_base(3,j,p);
tp=powers_precomp(k,j,p);
printf("\n");
printf("%4d bit RSA decryption %8.2lf ms \n",2*k,2*tr2);
printf("%4d bit DH %d bit exponent:-\n",k,j);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, small base %8.2lf ms \n",ts);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit DSA %d bit exponent:-\n",k,j);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n1024 bit prime....\n");
cinstr(p,p1024);
k=1024; j=160;
tr1=powers(k,j,p);
td=powers_double(k,j,p);
tr2=powers(k,k,p);
tv1=powers_small_exp(k,3,p);
tv2=powers_small_exp(k,65537L,p);
ts=powers_small_base(3,j,p);
tp=powers_precomp(k,j,p);
printf("\n");
printf("%4d bit RSA decryption %8.2lf ms \n",2*k,2*tr2);
printf("%4d bit RSA encryption e=3 %8.2lf ms \n",k,tv1);
printf("%4d bit RSA encryption e=65537 %8.2lf ms \n",k,tv2);
printf("%4d bit DH %d bit exponent:-\n",k,j);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, small base %8.2lf ms \n",ts);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit DSA %d bit exponent:-\n",k,j);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n2048 bit prime....\n");
cinstr(p,p2048);
k=2048; j=256;
tr1=powers(k,j,p);
td=powers_double(k,j,p);
powers(k,k,p);
tv1=powers_small_exp(k,3,p);
tv2=powers_small_exp(k,65537L,p);
ts=powers_small_base(3,j,p);
tp=powers_precomp(k,j,p);
printf("\n");
printf("%4d bit RSA encryption e=3 %8.2lf ms \n",k,tv1);
printf("%4d bit RSA encryption e=65537 %8.2lf ms \n",k,tv2);
printf("%4d bit DH %d bit exponent:-\n",k,j);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, small base %8.2lf ms \n",ts);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit DSA %d bit exponent:-\n",k,j);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n");
printf("Elliptic Curve point multiplication benchmarks - calculating r.P\n");
printf("From these figures it should be possible to roughly estimate the time\n");
printf("required for your favourite EC PK algorithm, ECDSA, ECDH, etc.\n");
printf("Key - ER - Elliptic Curve point multiplication r.P\n");
printf(" ED - Elliptic Curve double multiplication r.P + s.Q\n");
printf(" EP - Elliptic Curve multiplication with precomputation\n");
printf("EC - Elliptic curve GF(p) - p of no special form \n");
printf("ECDH - Diffie Hellman Key exchange\n");
printf("ECDSA - Digital Signature Algorithm\n");
mip->IOBASE=10;
printf("\n160 bit GF(p) Elliptic Curve....\n");
k=160;
cinstr(p,p160);
cinstr(b,b160);
cinstr(y,y160);
ecurve_init(a,b,p,MR_PROJECTIVE);
g=epoint_init();
if (!epoint_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults(k,g);
td=mult_double(k,g);
tp=mult_precomp(k,x,y,a,b,p);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n192 bit GF(p) Elliptic Curve....\n");
k=192;
cinstr(p,p192);
cinstr(b,b192);
cinstr(y,y192);
ecurve_init(a,b,p,MR_PROJECTIVE);
g=epoint_init();
if (!epoint_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults(k,g);
td=mult_double(k,g);
tp=mult_precomp(k,x,y,a,b,p);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n224 bit GF(p) Elliptic Curve....\n");
k=224;
cinstr(p,p224);
cinstr(b,b224);
cinstr(y,y224);
ecurve_init(a,b,p,MR_PROJECTIVE);
g=epoint_init();
if (!epoint_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults(k,g);
td=mult_double(k,g);
tp=mult_precomp(k,x,y,a,b,p);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n256 bit GF(p) Elliptic Curve....\n");
k=256;
cinstr(p,p256);
cinstr(b,b256);
cinstr(y,y256);
ecurve_init(a,b,p,MR_PROJECTIVE);
g=epoint_init();
if (!epoint_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults(k,g);
td=mult_double(k,g);
tp=mult_precomp(k,x,y,a,b,p);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
#ifndef MR_FP
printf("\n163 bit GF(2^m) Elliptic Curve....\n");
k=163;
mip->IOBASE=16;
cinstr(b,B163);
cinstr(x,x163);
cinstr(y,y163);
mip->IOBASE=10;
convert(A163,A2);
ecurve2_init(m163,a163,b163,c163,A2,b,FALSE,MR_PROJECTIVE);
g=epoint_init();
if (!epoint2_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults2(k,g);
td=mult2_double(k,g);
tp=mult2_precomp(k,x,y,A2,b,m163,a163,b163,c163);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n163 bit GF(2^m) Koblitz Elliptic Curve....\n");
k=163;
mip->IOBASE=16;
cinstr(b,KB163);
cinstr(x,Kx163);
cinstr(y,Ky163);
mip->IOBASE=10;
convert(KA163,A2);
ecurve2_init(m163,a163,b163,c163,A2,b,FALSE,MR_PROJECTIVE);
g=epoint_init();
if (!epoint2_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults2(k,g);
td=mult2_double(k,g);
tp=mult2_precomp(k,x,y,A2,b,m163,a163,b163,c163);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n233 bit GF(2^m) Elliptic Curve....\n");
k=233;
mip->IOBASE=16;
cinstr(b,B233);
cinstr(x,x233);
cinstr(y,y233);
mip->IOBASE=10;
convert(A233,A2);
ecurve2_init(m233,a233,b233,c233,A2,b,FALSE,MR_PROJECTIVE);
g=epoint_init();
if (!epoint2_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults2(k,g);
td=mult2_double(k,g);
tp=mult2_precomp(k,x,y,A2,b,m233,a233,b233,c233);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n233 bit GF(2^m) Koblitz Elliptic Curve....\n");
k=233;
mip->IOBASE=16;
cinstr(b,KB233);
cinstr(x,Kx233);
cinstr(y,Ky233);
mip->IOBASE=10;
convert(KA233,A2);
ecurve2_init(m233,a233,b233,c233,A2,b,FALSE,MR_PROJECTIVE);
g=epoint_init();
if (!epoint2_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults2(k,g);
td=mult2_double(k,g);
tp=mult2_precomp(k,x,y,A2,b,m233,a233,b233,c233);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n283 bit GF(2^m) Elliptic Curve....\n");
k=283;
mip->IOBASE=16;
cinstr(b,B283);
cinstr(x,x283);
cinstr(y,y283);
mip->IOBASE=10;
convert(A283,A2);
ecurve2_init(m283,a283,b283,c283,A2,b,FALSE,MR_PROJECTIVE);
g=epoint_init();
if (!epoint2_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults2(k,g);
td=mult2_double(k,g);
tp=mult2_precomp(k,x,y,A2,b,m283,a283,b283,c283);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n283 bit GF(2^m) Koblitz Elliptic Curve....\n");
k=283;
mip->IOBASE=16;
cinstr(b,KB283);
cinstr(x,Kx283);
cinstr(y,Ky283);
mip->IOBASE=10;
convert(KA283,A2);
ecurve2_init(m283,a283,b283,c283,A2,b,FALSE,MR_PROJECTIVE);
g=epoint_init();
if (!epoint2_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults2(k,g);
td=mult2_double(k,g);
tp=mult2_precomp(k,x,y,A2,b,m283,a283,b283,c283);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n571 bit GF(2^m) Elliptic Curve....\n");
k=571;
mip->IOBASE=16;
cinstr(b,B571);
cinstr(x,x571);
cinstr(y,y571);
mip->IOBASE=10;
convert(A571,A2);
ecurve2_init(m571,a571,b571,c571,A2,b,FALSE,MR_PROJECTIVE);
g=epoint_init();
if (!epoint2_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults2(k,g);
td=mult2_double(k,g);
tp=mult2_precomp(k,x,y,A2,b,m571,a571,b571,c571);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
printf("\n571 bit GF(2^m) Koblitz Elliptic Curve....\n");
k=571;
mip->IOBASE=16;
cinstr(b,KB571);
cinstr(x,Kx571);
cinstr(y,Ky571);
mip->IOBASE=10;
convert(KA571,A2);
ecurve2_init(m571,a571,b571,c571,A2,b,FALSE,MR_PROJECTIVE);
g=epoint_init();
if (!epoint2_set(x,y,0,g))
{
printf("This is not a point on the curve!\n");
exit(0);
}
tr1=mults2(k,g);
td=mult2_double(k,g);
tp=mult2_precomp(k,x,y,A2,b,m571,a571,b571,c571);
printf("\n");
printf("%4d bit ECDH :-\n",k);
printf(" offline, no precomputation %8.2lf ms \n",tr1);
printf(" offline, w. precomputation %8.2lf ms \n",tp);
printf(" online %8.2lf ms \n",tr1);
printf("%4d bit ECDSA :-\n",k);
printf(" signature no precomputation %8.2lf ms \n",tr1);
printf(" signature w. precomputation %8.2lf ms \n",tp);
printf(" verification %8.2lf ms \n",td);
#endif
return 0;
}
int main()
{
FILE *fp;
int ep,m,a,b,c;
epoint *g,*public;
char ifname[50],ofname[50];
big a2,a6,q,x,y,v,u1,u2,r,s,hash;
miracl instance;
miracl *mip=&instance;
char mem[MR_BIG_RESERVE(11)]; /* reserve space on the stack for 11 bigs */
char mem1[MR_ECP_RESERVE(2)]; /* and two elliptic curve points */
memset(mem,0,MR_BIG_RESERVE(11));
memset(mem1,0,MR_ECP_RESERVE(2));
/* get public data */
fp=fopen("common2.ecs","rt");
if (fp==NULL)
{
printf("file common2.ecs does not exist\n");
return 0;
}
fscanf(fp,"%d\n",&m);
mip=mirsys(mip,MR_ROUNDUP(abs(m),4),16);
a2=mirvar_mem(mip,mem,0);
a6=mirvar_mem(mip,mem,1);
q=mirvar_mem(mip,mem,2);
x=mirvar_mem(mip,mem,3);
y=mirvar_mem(mip,mem,4);
v=mirvar_mem(mip,mem,5);
u1=mirvar_mem(mip,mem,6);
u2=mirvar_mem(mip,mem,7);
s=mirvar_mem(mip,mem,8);
r=mirvar_mem(mip,mem,9);
hash=mirvar_mem(mip,mem,10);
innum(mip,a2,fp);
innum(mip,a6,fp);
innum(mip,q,fp);
innum(mip,x,fp);
innum(mip,y,fp);
fscanf(fp,"%d\n",&a);
fscanf(fp,"%d\n",&b);
fscanf(fp,"%d\n",&c);
fclose(fp);
ecurve2_init(mip,m,a,b,c,a2,a6,FALSE,MR_PROJECTIVE); /* initialise curve */
g=epoint_init_mem(mip,mem1,0);
epoint2_set(mip,x,y,0,g); /* initialise point of order q */
/* get public key of signer */
fp=fopen("public.ecs","rt");
if (fp==NULL)
{
printf("file public.ecs does not exist\n");
return 0;
}
fscanf(fp,"%d",&ep);
innum(mip,x,fp);
fclose(fp);
public=epoint_init_mem(mip,mem1,1);
int main()
{
FILE *fp;
int m,a,b,c,cf;
miracl *mip;
char ifname[13],ofname[13];
big a2,a6,q,x,y,d,r,s,k,hash;
epoint *g;
long seed;
/* get public data */
fp=fopen("common2.ecs","r");
if (fp==NULL)
{
printf("file common2.ecs does not exist\n");
return 0;
}
fscanf(fp,"%d\n",&m);
mip=mirsys(3+m/MIRACL,0);
a2=mirvar(0);
a6=mirvar(0);
q=mirvar(0);
x=mirvar(0);
y=mirvar(0);
d=mirvar(0);
r=mirvar(0);
s=mirvar(0);
k=mirvar(0);
hash=mirvar(0);
mip->IOBASE=16;
cinnum(a2,fp); /* curve parameters */
cinnum(a6,fp); /* curve parameters */
cinnum(q,fp); /* order of (x,y) */
cinnum(x,fp); /* (x,y) point on curve of order q */
cinnum(y,fp);
mip->IOBASE=10;
fscanf(fp,"%d\n",&a);
fscanf(fp,"%d\n",&b);
fscanf(fp,"%d\n",&c);
fclose(fp);
/* randomise */
printf("Enter 9 digit random number seed = ");
scanf("%ld",&seed);
getchar();
irand(seed);
ecurve2_init(m,a,b,c,a2,a6,FALSE,MR_PROJECTIVE); /* initialise curve */
g=epoint2_init();
epoint2_set(x,y,0,g); /* set point of order q */
/* calculate r - this can be done offline,
and hence amortized to almost nothing */
bigrand(q,k);
ecurve2_mult(k,g,g); /* see ebrick2.c for method to speed this up */
epoint2_get(g,r,r);
divide(r,q,q);
/* get private key of signer */
fp=fopen("private.ecs","r");
if (fp==NULL)
{
printf("file private.ecs does not exist\n");
return 0;
}
cinnum(d,fp);
fclose(fp);
/* calculate message digest */
printf("file to be signed = ");
gets(ifname);
strcpy(ofname,ifname);
strip(ofname);
strcat(ofname,".ecs");
if ((fp=fopen(ifname,"rb"))==NULL)
{
printf("Unable to open file %s\n",ifname);
return 0;
}
hashing(fp,hash);
fclose(fp);
/* calculate s */
xgcd(k,q,k,k,k);
mad(d,r,hash,q,q,s);
mad(s,k,k,q,q,s);
fp=fopen(ofname,"w");
cotnum(r,fp);
cotnum(s,fp);
fclose(fp);
return 0;
}