ge25519.c

Jenkins

ge25519.c

Absolute File Name:

/home/opencoverage/opencoverage/guest-scripts/openssh/src/ge25519.c

Line

Source

Count

static const crypto_sign_ed25519_ref_fe25519 ge25519_ecd = {{0xA3, 0x78, 0x59, 0x13, 0xCA, 0x4D, 0xEB, 0x75, 0xAB, 0xD8, 0x41, 0x41, 0x4D, 0x0A, 0x70, 0x00,

0x98, 0xE8, 0x79, 0x77, 0x79, 0x40, 0xC7, 0x8C, 0x73, 0xFE, 0x6F, 0x2B, 0xEE, 0x6C, 0x03, 0x52}};

static const crypto_sign_ed25519_ref_fe25519 ge25519_ec2d = {{0x59, 0xF1, 0xB2, 0x26, 0x94, 0x9B, 0xD6, 0xEB, 0x56, 0xB1, 0x83, 0x82, 0x9A, 0x14, 0xE0, 0x00,

0x30, 0xD1, 0xF3, 0xEE, 0xF2, 0x80, 0x8E, 0x19, 0xE7, 0xFC, 0xDF, 0x56, 0xDC, 0xD9, 0x06, 0x24}};

static const crypto_sign_ed25519_ref_fe25519 ge25519_sqrtm1 = {{0xB0, 0xA0, 0x0E, 0x4A, 0x27, 0x1B, 0xEE, 0xC4, 0x78, 0xE4, 0x2F, 0xAD, 0x06, 0x18, 0x43, 0x2F,

0xA7, 0xD7, 0xFB, 0x3D, 0x99, 0x00, 0x4D, 0x2B, 0x0B, 0xDF, 0xC1, 0x4F, 0x80, 0x24, 0x83, 0x2B}};

typedef struct

{

crypto_sign_ed25519_ref_fe25519 x;

crypto_sign_ed25519_ref_fe25519 z;

crypto_sign_ed25519_ref_fe25519 y;

crypto_sign_ed25519_ref_fe25519 t;

} ge25519_p1p1;

typedef struct

{

crypto_sign_ed25519_ref_fe25519 x;

crypto_sign_ed25519_ref_fe25519 y;

crypto_sign_ed25519_ref_fe25519 z;

} ge25519_p2;

typedef struct

{

crypto_sign_ed25519_ref_fe25519 x;

crypto_sign_ed25519_ref_fe25519 y;

} ge25519_aff;

const crypto_sign_ed25519_ref_ge25519 crypto_sign_ed25519_ref_ge25519_base = {{{0x1A, 0xD5, 0x25, 0x8F, 0x60, 0x2D, 0x56, 0xC9, 0xB2, 0xA7, 0x25, 0x95, 0x60, 0xC7, 0x2C, 0x69,

0x5C, 0xDC, 0xD6, 0xFD, 0x31, 0xE2, 0xA4, 0xC0, 0xFE, 0x53, 0x6E, 0xCD, 0xD3, 0x36, 0x69, 0x21}},

{{0x58, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,

0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66}},

{{0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}},

{{0xA3, 0xDD, 0xB7, 0xA5, 0xB3, 0x8A, 0xDE, 0x6D, 0xF5, 0x52, 0x51, 0x77, 0x80, 0x9F, 0xF0, 0x20,

0x7D, 0xE3, 0xAB, 0x64, 0x8E, 0x4E, 0xEA, 0x66, 0x65, 0x76, 0x8B, 0xD7, 0x0F, 0x5F, 0x87, 0x67}}};

static const ge25519_aff ge25519_base_multiples_affine[425] = {

};

static void p1p1_to_p2(ge25519_p2 *r, const ge25519_p1p1 *p)

{

crypto_sign_ed25519_ref_fe25519_mul(&r->x, &p->x, &p->t);

crypto_sign_ed25519_ref_fe25519_mul(&r->y, &p->y, &p->z);

crypto_sign_ed25519_ref_fe25519_mul(&r->z, &p->z, &p->t);

}

executed 5340538 times by 2 tests: end of block

Executed by:

test_kex
test_sshkey

5340538

static void p1p1_to_p3(crypto_sign_ed25519_ref_ge25519 *r, const ge25519_p1p1 *p)

{

p1p1_to_p2((ge25519_p2 *)r, p);

crypto_sign_ed25519_ref_fe25519_mul(&r->t, &p->x, &p->y);

}

executed 1846116 times by 2 tests: end of block

Executed by:

test_kex
test_sshkey

1846116

static void ge25519_mixadd2(crypto_sign_ed25519_ref_ge25519 *r, const ge25519_aff *q)

{

crypto_sign_ed25519_ref_fe25519 a,b,t1,t2,c,d,e,f,g,h,qt;

crypto_sign_ed25519_ref_fe25519_mul(&qt, &q->x, &q->y);

crypto_sign_ed25519_ref_fe25519_sub(&a, &r->y, &r->x);

crypto_sign_ed25519_ref_fe25519_add(&b, &r->y, &r->x);

crypto_sign_ed25519_ref_fe25519_sub(&t1, &q->y, &q->x);

crypto_sign_ed25519_ref_fe25519_add(&t2, &q->y, &q->x);

crypto_sign_ed25519_ref_fe25519_mul(&a, &a, &t1);

crypto_sign_ed25519_ref_fe25519_mul(&b, &b, &t2);

crypto_sign_ed25519_ref_fe25519_sub(&e, &b, &a);

crypto_sign_ed25519_ref_fe25519_add(&h, &b, &a);

crypto_sign_ed25519_ref_fe25519_mul(&c, &r->t, &qt);

crypto_sign_ed25519_ref_fe25519_mul(&c, &c, &ge25519_ec2d);

crypto_sign_ed25519_ref_fe25519_add(&d, &r->z, &r->z);

crypto_sign_ed25519_ref_fe25519_sub(&f, &d, &c);

crypto_sign_ed25519_ref_fe25519_add(&g, &d, &c);

crypto_sign_ed25519_ref_fe25519_mul(&r->x, &e, &f);

crypto_sign_ed25519_ref_fe25519_mul(&r->y, &h, &g);

crypto_sign_ed25519_ref_fe25519_mul(&r->z, &g, &f);

crypto_sign_ed25519_ref_fe25519_mul(&r->t, &e, &h);

}

executed 6552 times by 3 tests: end of block

Executed by:

ssh-keygen
test_kex
test_sshkey

6552

static void add_p1p1(ge25519_p1p1 *r, const crypto_sign_ed25519_ref_ge25519 *p, const crypto_sign_ed25519_ref_ge25519 *q)

{

crypto_sign_ed25519_ref_fe25519 a, b, c, d, t;

crypto_sign_ed25519_ref_fe25519_sub(&a, &p->y, &p->x);

crypto_sign_ed25519_ref_fe25519_sub(&t, &q->y, &q->x);

crypto_sign_ed25519_ref_fe25519_mul(&a, &a, &t);

crypto_sign_ed25519_ref_fe25519_add(&b, &p->x, &p->y);

crypto_sign_ed25519_ref_fe25519_add(&t, &q->x, &q->y);

crypto_sign_ed25519_ref_fe25519_mul(&b, &b, &t);

crypto_sign_ed25519_ref_fe25519_mul(&c, &p->t, &q->t);

crypto_sign_ed25519_ref_fe25519_mul(&c, &c, &ge25519_ec2d);

crypto_sign_ed25519_ref_fe25519_mul(&d, &p->z, &q->z);

crypto_sign_ed25519_ref_fe25519_add(&d, &d, &d);

crypto_sign_ed25519_ref_fe25519_sub(&r->x, &b, &a);

100

crypto_sign_ed25519_ref_fe25519_sub(&r->t, &d, &c);

101

crypto_sign_ed25519_ref_fe25519_add(&r->z, &d, &c);

102

crypto_sign_ed25519_ref_fe25519_add(&r->y, &b, &a);

103

}

executed 1790428 times by 2 tests: end of block

Executed by:

test_kex
test_sshkey

1790428

104

105

106

static void dbl_p1p1(ge25519_p1p1 *r, const ge25519_p2 *p)

107

{

108

crypto_sign_ed25519_ref_fe25519 a,b,c,d;

109

crypto_sign_ed25519_ref_fe25519_square(&a, &p->x);

110

crypto_sign_ed25519_ref_fe25519_square(&b, &p->y);

111

crypto_sign_ed25519_ref_fe25519_square(&c, &p->z);

112

crypto_sign_ed25519_ref_fe25519_add(&c, &c, &c);

113

crypto_sign_ed25519_ref_fe25519_neg(&d, &a);

114

115

crypto_sign_ed25519_ref_fe25519_add(&r->x, &p->x, &p->y);

116

crypto_sign_ed25519_ref_fe25519_square(&r->x, &r->x);

117

crypto_sign_ed25519_ref_fe25519_sub(&r->x, &r->x, &a);

118

crypto_sign_ed25519_ref_fe25519_sub(&r->x, &r->x, &b);

119

crypto_sign_ed25519_ref_fe25519_add(&r->z, &d, &b);

120

crypto_sign_ed25519_ref_fe25519_sub(&r->t, &r->z, &c);

121

crypto_sign_ed25519_ref_fe25519_sub(&r->y, &d, &b);

122

}

executed 3550110 times by 2 tests: end of block

Executed by:

test_kex
test_sshkey

3550110

123

124

125

static void cmov_aff(ge25519_aff *r, const ge25519_aff *p, unsigned char b)

126

{

127

crypto_sign_ed25519_ref_fe25519_cmov(&r->x, &p->x, b);

128

crypto_sign_ed25519_ref_fe25519_cmov(&r->y, &p->y, b);

129

}

executed 26520 times by 3 tests: end of block

Executed by:

ssh-keygen
test_kex
test_sshkey

26520

130

131

static unsigned char equal(signed char b,signed char c)

132

{

133

unsigned char ub = b;

134

unsigned char uc = c;

135

unsigned char x = ub ^ uc;

crypto_uint32 y = x;

y -= 1;

y >>= 31;

return

executed 46410 times by 3 tests: return y;

Executed by:

ssh-keygen
test_kex
test_sshkey

executed 46410 times by 3 tests: return y;

Executed by:

ssh-keygen
test_kex
test_sshkey

46410

140

}

141

142

static unsigned char negative(signed char b)

143

{

144

unsigned long long x = b;

145

x >>= 63;

146

return

executed 6630 times by 3 tests: return x;

Executed by:

ssh-keygen
test_kex
test_sshkey

executed 6630 times by 3 tests: return x;

Executed by:

ssh-keygen
test_kex
test_sshkey

6630

147

}

148

149

static void choose_t(ge25519_aff *t, unsigned long long pos, signed char b)

150

{

151

152

crypto_sign_ed25519_ref_fe25519 v;

153

*t = ge25519_base_multiples_affine[5*pos+0];

154

cmov_aff(t, &ge25519_base_multiples_affine[5*pos+1],equal(b,1) | equal(b,-1));

155

cmov_aff(t, &ge25519_base_multiples_affine[5*pos+2],equal(b,2) | equal(b,-2));

156

cmov_aff(t, &ge25519_base_multiples_affine[5*pos+3],equal(b,3) | equal(b,-3));

157

cmov_aff(t, &ge25519_base_multiples_affine[5*pos+4],equal(b,-4));

158

crypto_sign_ed25519_ref_fe25519_neg(&v, &t->x);

159

crypto_sign_ed25519_ref_fe25519_cmov(&t->x, &v, negative(b));

160

}

executed 6630 times by 3 tests: end of block

Executed by:

ssh-keygen
test_kex
test_sshkey

6630

161

162

static void setneutral(crypto_sign_ed25519_ref_ge25519 *r)

163

{

164

crypto_sign_ed25519_ref_fe25519_setzero(&r->x);

165

crypto_sign_ed25519_ref_fe25519_setone(&r->y);

166

crypto_sign_ed25519_ref_fe25519_setone(&r->z);

167

crypto_sign_ed25519_ref_fe25519_setzero(&r->t);

168

}

executed 13922 times by 2 tests: end of block

Executed by:

test_kex
test_sshkey

13922

int crypto_sign_ed25519_ref_unpackneg_vartime(crypto_sign_ed25519_ref_ge25519 *r, const unsigned char p[32])

176

{

177

unsigned char par;

178

crypto_sign_ed25519_ref_fe25519 t, chk, num, den, den2, den4, den6;

179

crypto_sign_ed25519_ref_fe25519_setone(&r->z);

180

par = p[31] >> 7;

181

crypto_sign_ed25519_ref_fe25519_unpack(&r->y, p);

182

crypto_sign_ed25519_ref_fe25519_square(&num, &r->y);

183

crypto_sign_ed25519_ref_fe25519_mul(&den, &num, &ge25519_ecd);

184

crypto_sign_ed25519_ref_fe25519_sub(&num, &num, &r->z);

185

crypto_sign_ed25519_ref_fe25519_add(&den, &r->z, &den);

crypto_sign_ed25519_ref_fe25519_square(&den2, &den);

190

crypto_sign_ed25519_ref_fe25519_square(&den4, &den2);

191

crypto_sign_ed25519_ref_fe25519_mul(&den6, &den4, &den2);

192

crypto_sign_ed25519_ref_fe25519_mul(&t, &den6, &num);

193

crypto_sign_ed25519_ref_fe25519_mul(&t, &t, &den);

194

195

crypto_sign_ed25519_ref_fe25519_pow2523(&t, &t);

196

197

crypto_sign_ed25519_ref_fe25519_mul(&t, &t, &num);

198

crypto_sign_ed25519_ref_fe25519_mul(&t, &t, &den);

199

crypto_sign_ed25519_ref_fe25519_mul(&t, &t, &den);

200

crypto_sign_ed25519_ref_fe25519_mul(&r->x, &t, &den);

201

202

203

crypto_sign_ed25519_ref_fe25519_square(&chk, &r->x);

204

crypto_sign_ed25519_ref_fe25519_mul(&chk, &chk, &den);

205

if (!crypto_sign_ed25519_ref_fe25519_iseq_vartime(&chk, &num)

!crypto_sign_e...me(&chk, &num)	Description
TRUE	evaluated 14183 times by 2 tests Evaluated by: test_kex test_sshkey
FALSE	evaluated 216 times by 2 tests Evaluated by: test_kex test_sshkey

)

216-14183

206

crypto_sign_ed25519_ref_fe25519_mul(&r->x, &r->x, &ge25519_sqrtm1);

executed 14183 times by 2 tests: crypto_sign_ed25519_ref_fe25519_mul(&r->x, &r->x, &ge25519_sqrtm1);

Executed by:

test_kex
test_sshkey

14183

207

208

209

crypto_sign_ed25519_ref_fe25519_square(&chk, &r->x);

210

crypto_sign_ed25519_ref_fe25519_mul(&chk, &chk, &den);

211

if (!crypto_sign_ed25519_ref_fe25519_iseq_vartime(&chk, &num)

!crypto_sign_e...me(&chk, &num)	Description
TRUE	evaluated 477 times by 1 test Evaluated by: test_sshkey
FALSE	evaluated 13922 times by 2 tests Evaluated by: test_kex test_sshkey

)

477-13922

212

return

executed 477 times by 1 test: return -1;

Executed by:

test_sshkey

-1;

executed 477 times by 1 test: return -1;

Executed by:

test_sshkey

477

213

214

215

if(crypto_sign_ed25519_ref_fe25519_getparity(&r->x) != (1-par)

crypto_sign_ed...>x) != (1-par)	Description
TRUE	evaluated 227 times by 2 tests Evaluated by: test_kex test_sshkey
FALSE	evaluated 13695 times by 2 tests Evaluated by: test_kex test_sshkey

)

227-13695

216

crypto_sign_ed25519_ref_fe25519_neg(&r->x, &r->x);

executed 227 times by 2 tests: crypto_sign_ed25519_ref_fe25519_neg(&r->x, &r->x);

Executed by:

test_kex
test_sshkey

227

217

218

crypto_sign_ed25519_ref_fe25519_mul(&r->t, &r->x, &r->y);

219

return

executed 13922 times by 2 tests: return 0;

Executed by:

test_kex
test_sshkey

executed 13922 times by 2 tests: return 0;

Executed by:

test_kex
test_sshkey

13922

220

}

221

222

void crypto_sign_ed25519_ref_pack(unsigned char r[32], const crypto_sign_ed25519_ref_ge25519 *p)

223

{

224

crypto_sign_ed25519_ref_fe25519 tx, ty, zi;

225

crypto_sign_ed25519_ref_fe25519_invert(&zi, &p->z);

226

crypto_sign_ed25519_ref_fe25519_mul(&tx, &p->x, &zi);

227

crypto_sign_ed25519_ref_fe25519_mul(&ty, &p->y, &zi);

228

crypto_sign_ed25519_ref_fe25519_pack(r, &ty);

229

r[31] ^= crypto_sign_ed25519_ref_fe25519_getparity(&tx) << 7;

230

}

executed 14000 times by 3 tests: end of block

Executed by:

ssh-keygen
test_kex
test_sshkey

14000

231

232

int crypto_sign_ed25519_ref_isneutral_vartime(const crypto_sign_ed25519_ref_ge25519 *p)

233

{

234

int ret = 1;

235

if(!crypto_sign_ed25519_ref_fe25519_iszero(&p->x)

!crypto_sign_e..._iszero(&p->x)	Description
TRUE	never evaluated
FALSE	never evaluated

) ret = 0;

never executed: ret = 0;

236

if(!crypto_sign_ed25519_ref_fe25519_iseq_vartime(&p->y, &p->z)

!crypto_sign_e...(&p->y, &p->z)	Description
TRUE	never evaluated
FALSE	never evaluated

) ret = 0;

never executed: ret = 0;

237

return

never executed: return ret;

ret;

never executed: return ret;

}

void crypto_sign_ed25519_ref_double_scalarmult_vartime(crypto_sign_ed25519_ref_ge25519 *r, const crypto_sign_ed25519_ref_ge25519 *p1, const crypto_sign_ed25519_ref_sc25519 *s1, const crypto_sign_ed25519_ref_ge25519 *p2, const crypto_sign_ed25519_ref_sc25519 *s2)

242

{

243

ge25519_p1p1 tp1p1;

244

crypto_sign_ed25519_ref_ge25519 pre[16];

245

unsigned char b[127];

int i;

setneutral(pre);

pre[1] = *p1;

dbl_p1p1(&tp1p1,(ge25519_p2 *)p1); p1p1_to_p3( &pre[2], &tp1p1);

252

add_p1p1(&tp1p1,&pre[1], &pre[2]); p1p1_to_p3( &pre[3], &tp1p1);

253

pre[4] = *p2;

254

add_p1p1(&tp1p1,&pre[1], &pre[4]); p1p1_to_p3( &pre[5], &tp1p1);

255

add_p1p1(&tp1p1,&pre[2], &pre[4]); p1p1_to_p3( &pre[6], &tp1p1);

256

add_p1p1(&tp1p1,&pre[3], &pre[4]); p1p1_to_p3( &pre[7], &tp1p1);

257

dbl_p1p1(&tp1p1,(ge25519_p2 *)p2); p1p1_to_p3( &pre[8], &tp1p1);

258

add_p1p1(&tp1p1,&pre[1], &pre[8]); p1p1_to_p3( &pre[9], &tp1p1);

259

dbl_p1p1(&tp1p1,(ge25519_p2 *)&pre[5]); p1p1_to_p3(&pre[10], &tp1p1);

260

add_p1p1(&tp1p1,&pre[3], &pre[8]); p1p1_to_p3(&pre[11], &tp1p1);

261

add_p1p1(&tp1p1,&pre[4], &pre[8]); p1p1_to_p3(&pre[12], &tp1p1);

262

add_p1p1(&tp1p1,&pre[1],&pre[12]); p1p1_to_p3(&pre[13], &tp1p1);

263

add_p1p1(&tp1p1,&pre[2],&pre[12]); p1p1_to_p3(&pre[14], &tp1p1);

264

add_p1p1(&tp1p1,&pre[3],&pre[12]); p1p1_to_p3(&pre[15], &tp1p1);

265

266

crypto_sign_ed25519_ref_sc25519_2interleave2(b,s1,s2);

*r = pre[b[126]];

for(i=125;i>=0

i>=0	Description
TRUE	evaluated 1754172 times by 2 tests Evaluated by: test_kex test_sshkey
FALSE	evaluated 13922 times by 2 tests Evaluated by: test_kex test_sshkey

;i--)

13922-1754172

271

{

272

dbl_p1p1(&tp1p1, (ge25519_p2 *)r);

273

p1p1_to_p2((ge25519_p2 *) r, &tp1p1);

274

dbl_p1p1(&tp1p1, (ge25519_p2 *)r);

275

if(b[i]!=0

b[i]!=0	Description
TRUE	evaluated 1651208 times by 2 tests Evaluated by: test_kex test_sshkey
FALSE	evaluated 102964 times by 2 tests Evaluated by: test_kex test_sshkey

)

102964-1651208

276

{

277

p1p1_to_p3(r, &tp1p1);

278

add_p1p1(&tp1p1, r, &pre[b[i]]);

279

}

executed 1651208 times by 2 tests: end of block

Executed by:

test_kex
test_sshkey

1651208

280

if(i != 0

i != 0	Description
TRUE	evaluated 1740250 times by 2 tests Evaluated by: test_kex test_sshkey
FALSE	evaluated 13922 times by 2 tests Evaluated by: test_kex test_sshkey

) p1p1_to_p2((ge25519_p2 *)r, &tp1p1);

executed 1740250 times by 2 tests: p1p1_to_p2((ge25519_p2 *)r, &tp1p1);

Executed by:

test_kex
test_sshkey

13922-1740250

281

else p1p1_to_p3(r, &tp1p1);

executed 13922 times by 2 tests: p1p1_to_p3(r, &tp1p1);

Executed by:

test_kex
test_sshkey

13922

282

}

283

}

executed 13922 times by 2 tests: end of block

Executed by:

test_kex
test_sshkey

13922

284

285

void crypto_sign_ed25519_ref_scalarmult_base(crypto_sign_ed25519_ref_ge25519 *r, const crypto_sign_ed25519_ref_sc25519 *s)

{

signed char b[85];

int i;

ge25519_aff t;

crypto_sign_ed25519_ref_sc25519_window3(b,s);

291

292

choose_t((ge25519_aff *)r, 0, b[0]);

293

crypto_sign_ed25519_ref_fe25519_setone(&r->z);

294

crypto_sign_ed25519_ref_fe25519_mul(&r->t, &r->x, &r->y);

295

for(i=1;i<85

i<85	Description
TRUE	evaluated 6552 times by 3 tests Evaluated by: ssh-keygen test_kex test_sshkey
FALSE	evaluated 78 times by 3 tests Evaluated by: ssh-keygen test_kex test_sshkey