OpenCoverage

ed25519.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssh/src/ed25519.c
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1-
2-
3static void get_hram(unsigned char *hram, const unsigned char *sm, const unsigned char *pk, unsigned char *playground, unsigned long long smlen)-
4{-
5 unsigned long long i;-
6-
7 for (i = 0;i < 32
i < 32Description
TRUEevaluated 447584 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
FALSEevaluated 13987 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
;++i) playground[i] = sm[i];
executed 447584 times by 2 tests: playground[i] = sm[i];
Executed by:
  • test_kex
  • test_sshkey
13987-447584
8 for (i = 32;i < 64
i < 64Description
TRUEevaluated 447584 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
FALSEevaluated 13987 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
;++i) playground[i] = pk[i-32];
executed 447584 times by 2 tests: playground[i] = pk[i-32];
Executed by:
  • test_kex
  • test_sshkey
13987-447584
9 for (i = 64;i < smlen
i < smlenDescription
TRUEevaluated 4495939 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
FALSEevaluated 13987 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
;++i) playground[i] = sm[i];
executed 4495939 times by 2 tests: playground[i] = sm[i];
Executed by:
  • test_kex
  • test_sshkey
13987-4495939
10-
11 crypto_hash_sha512(hram,playground,smlen);-
12}
executed 13987 times by 2 tests: end of block
Executed by:
  • test_kex
  • test_sshkey
13987
13-
14-
15int crypto_sign_ed25519_keypair(-
16 unsigned char *pk,-
17 unsigned char *sk-
18 )-
19{-
20 crypto_sign_ed25519_ref_sc25519 scsk;-
21 crypto_sign_ed25519_ref_ge25519 gepk;-
22 unsigned char extsk[64];-
23 int i;-
24-
25 arc4random_buf((sk), (32));-
26 crypto_hash_sha512(extsk, sk, 32);-
27 extsk[0] &= 248;-
28 extsk[31] &= 127;-
29 extsk[31] |= 64;-
30-
31 crypto_sign_ed25519_ref_sc25519_from32bytes(&scsk,extsk);-
32-
33 crypto_sign_ed25519_ref_scalarmult_base(&gepk, &scsk);-
34 crypto_sign_ed25519_ref_pack(pk, &gepk);-
35 for(i=0;i<32
i<32Description
TRUEevaluated 416 times by 3 tests
Evaluated by:
  • ssh-keygen
  • test_kex
  • test_sshkey
FALSEevaluated 13 times by 3 tests
Evaluated by:
  • ssh-keygen
  • test_kex
  • test_sshkey
;i++)		13-416
36 sk[32 + i] = pk[i];
executed 416 times by 3 tests: sk[32 + i] = pk[i];
Executed by:
  • ssh-keygen
  • test_kex
  • test_sshkey
416
37 return
executed 13 times by 3 tests: return 0;
Executed by:
  • ssh-keygen
  • test_kex
  • test_sshkey
 0;
executed 13 times by 3 tests: return 0;
Executed by:
  • ssh-keygen
  • test_kex
  • test_sshkey
13
38}-
39-
40int crypto_sign_ed25519(-
41 unsigned char *sm,unsigned long long *smlen,-
42 const unsigned char *m,unsigned long long mlen,-
43 const unsigned char *sk-
44 )-
45{-
46 crypto_sign_ed25519_ref_sc25519 sck, scs, scsk;-
47 crypto_sign_ed25519_ref_ge25519 ger;-
48 unsigned char r[32];-
49 unsigned char s[32];-
50 unsigned char extsk[64];-
51 unsigned long long i;-
52 unsigned char hmg[64U];-
53 unsigned char hram[64U];-
54-
55 crypto_hash_sha512(extsk, sk, 32);-
56 extsk[0] &= 248;-
57 extsk[31] &= 127;-
58 extsk[31] |= 64;-
59-
60 *smlen = mlen+64;-
61 for(i=0;i<mlen
i<mlenDescription
TRUEevaluated 12296 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
FALSEevaluated 65 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
;i++)		65-12296
62 sm[64 + i] = m[i];
executed 12296 times by 2 tests: sm[64 + i] = m[i];
Executed by:
  • test_kex
  • test_sshkey
12296
63 for(i=0;i<32
i<32Description
TRUEevaluated 2080 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
FALSEevaluated 65 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
;i++)		65-2080
64 sm[32 + i] = extsk[32+i];
executed 2080 times by 2 tests: sm[32 + i] = extsk[32+i];
Executed by:
  • test_kex
  • test_sshkey
2080
65-
66 crypto_hash_sha512(hmg, sm+32, mlen+32);-
67-
68-
69 crypto_sign_ed25519_ref_sc25519_from64bytes(&sck, hmg);-
70 crypto_sign_ed25519_ref_scalarmult_base(&ger, &sck);-
71 crypto_sign_ed25519_ref_pack(r, &ger);-
72-
73-
74 for(i=0;i<32
i<32Description
TRUEevaluated 2080 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
FALSEevaluated 65 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
;i++)		65-2080
75 sm[i] = r[i];
executed 2080 times by 2 tests: sm[i] = r[i];
Executed by:
  • test_kex
  • test_sshkey
2080
76-
77 get_hram(hram, sm, sk+32, sm, mlen+64);-
78-
79 crypto_sign_ed25519_ref_sc25519_from64bytes(&scs, hram);-
80 crypto_sign_ed25519_ref_sc25519_from32bytes(&scsk, extsk);-
81 crypto_sign_ed25519_ref_sc25519_mul(&scs, &scs, &scsk);-
82-
83 crypto_sign_ed25519_ref_sc25519_add(&scs, &scs, &sck);-
84-
85 crypto_sign_ed25519_ref_sc25519_to32bytes(s,&scs);-
86 for(i=0;i<32
i<32Description
TRUEevaluated 2080 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
FALSEevaluated 65 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
;i++)		65-2080
87 sm[32 + i] = s[i];
executed 2080 times by 2 tests: sm[32 + i] = s[i];
Executed by:
  • test_kex
  • test_sshkey
2080
88-
89 return
executed 65 times by 2 tests: return 0;
Executed by:
  • test_kex
  • test_sshkey
 0;
executed 65 times by 2 tests: return 0;
Executed by:
  • test_kex
  • test_sshkey
65
90}-
91-
92int crypto_sign_ed25519_open(-
93 unsigned char *m,unsigned long long *mlen,-
94 const unsigned char *sm,unsigned long long smlen,-
95 const unsigned char *pk-
96 )-
97{-
98 unsigned int i;-
99 int ret;-
100 unsigned char t2[32];-
101 crypto_sign_ed25519_ref_ge25519 get1, get2;-
102 crypto_sign_ed25519_ref_sc25519 schram, scs;-
103 unsigned char hram[64U];-
104-
105 *mlen = (unsigned long long) -1;-
106 if (smlen < 64
smlen < 64Description
TRUEnever evaluated
FALSEevaluated 14399 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
) return
never executed: return -1;
 -1;
never executed: return -1;
0-14399
107-
108 if (crypto_sign_ed25519_ref_unpackneg_vartime(&get1, pk)
crypto_sign_ed...ime(&get1, pk)Description
TRUEevaluated 477 times by 1 test
Evaluated by:
  • test_sshkey
FALSEevaluated 13922 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
) 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
477-13922
109-
110 get_hram(hram,sm,pk,m,smlen);-
111-
112 crypto_sign_ed25519_ref_sc25519_from64bytes(&schram, hram);-
113-
114 crypto_sign_ed25519_ref_sc25519_from32bytes(&scs, sm+32);-
115-
116 crypto_sign_ed25519_ref_double_scalarmult_vartime(&get2, &get1, &schram, &crypto_sign_ed25519_ref_ge25519_base, &scs);-
117 crypto_sign_ed25519_ref_pack(t2, &get2);-
118-
119 ret = crypto_verify_32(sm, t2);-
120-
121 if (!ret
!retDescription
TRUEevaluated 75 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
FALSEevaluated 13847 times by 1 test
Evaluated by:
  • test_sshkey
)		75-13847
122 {-
123 for(i=0;i<smlen-64
i<smlen-64Description
TRUEevaluated 16198 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
FALSEevaluated 75 times by 2 tests
Evaluated by:
  • test_kex
  • test_sshkey
;i++)		75-16198
124 m[i] = sm[i + 64];
executed 16198 times by 2 tests: m[i] = sm[i + 64];
Executed by:
  • test_kex
  • test_sshkey
16198
125 *mlen = smlen-64;-
126 }
executed 75 times by 2 tests: end of block
Executed by:
  • test_kex
  • test_sshkey
75
127 else-
128 {-
129 for(i=0;i<smlen-64
i<smlen-64Description
TRUEevaluated 4467445 times by 1 test
Evaluated by:
  • test_sshkey
FALSEevaluated 13847 times by 1 test
Evaluated by:
  • test_sshkey
;i++)		13847-4467445
130 m[i] = 0;
executed 4467445 times by 1 test: m[i] = 0;
Executed by:
  • test_sshkey
4467445
131 }
executed 13847 times by 1 test: end of block
Executed by:
  • test_sshkey
13847
132 return
executed 13922 times by 2 tests: return ret;
Executed by:
  • test_kex
  • test_sshkey
 ret;
executed 13922 times by 2 tests: return ret;
Executed by:
  • test_kex
  • test_sshkey
13922
133}-
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