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cts128.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/modes/cts128.c
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1size_t CRYPTO_cts128_encrypt_block(const unsigned char *in, unsigned char *out,-
2 size_t len, const void *key,-
3 unsigned char ivec[16], block128_f block)-
4{ size_t residue, n;-
5-
6 if (len <= 16
len <= 16Description
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
) return
never executed: return 0;
 0;
never executed: return 0;
0-6
7-
8 if ((
(residue=len%16) == 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
residue=len%16) == 0
(residue=len%16) == 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) residue = 16;
executed 3 times by 1 test: residue = 16;
Executed by:
  • cts128test
3
9-
10 len -= residue;-
11-
12 CRYPTO_cbc128_encrypt(in,out,len,key,ivec,block);-
13-
14 in += len;-
15 out += len;-
16-
17 for (n=0; n<residue
n<residueDescription
TRUEevaluated 79 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
; ++n)		6-79
18 ivec[n] ^= in[n];
executed 79 times by 1 test: ivec[n] ^= in[n];
Executed by:
  • cts128test
79
19 (*block)(ivec,ivec,key);-
20 memcpy(out,out-16,residue);-
21 memcpy(out-16,ivec,16);-
22-
23 return
executed 6 times by 1 test: return len+residue;
Executed by:
  • cts128test
 len+residue;
executed 6 times by 1 test: return len+residue;
Executed by:
  • cts128test
6
24}-
25-
26size_t CRYPTO_nistcts128_encrypt_block(const unsigned char *in, unsigned char *out,-
27 size_t len, const void *key,-
28 unsigned char ivec[16], block128_f block)-
29{ size_t residue, n;-
30-
31 if (len < 16
len < 16Description
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
) return
never executed: return 0;
 0;
never executed: return 0;
0-6
32-
33 residue=len%16;-
34-
35 len -= residue;-
36-
37 CRYPTO_cbc128_encrypt(in,out,len,key,ivec,block);-
38-
39 if (residue==0
residue==0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) return
executed 3 times by 1 test: return len;
Executed by:
  • cts128test
 len;
executed 3 times by 1 test: return len;
Executed by:
  • cts128test
3
40-
41 in += len;-
42 out += len;-
43-
44 for (n=0; n<residue
n<residueDescription
TRUEevaluated 31 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
; ++n)		3-31
45 ivec[n] ^= in[n];
executed 31 times by 1 test: ivec[n] ^= in[n];
Executed by:
  • cts128test
31
46 (*block)(ivec,ivec,key);-
47 memcpy(out-16+residue,ivec,16);-
48-
49 return
executed 3 times by 1 test: return len+residue;
Executed by:
  • cts128test
 len+residue;
executed 3 times by 1 test: return len+residue;
Executed by:
  • cts128test
3
50}-
51-
52size_t CRYPTO_cts128_encrypt(const unsigned char *in, unsigned char *out,-
53 size_t len, const void *key,-
54 unsigned char ivec[16], cbc128_f cbc)-
55{ size_t residue;-
56 union { size_t align; unsigned char c[16]; } tmp;-
57-
58 if (len <= 16
len <= 16Description
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
) return
never executed: return 0;
 0;
never executed: return 0;
0-6
59-
60 if ((
(residue=len%16) == 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
residue=len%16) == 0
(residue=len%16) == 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) residue = 16;
executed 3 times by 1 test: residue = 16;
Executed by:
  • cts128test
3
61-
62 len -= residue;-
63-
64 (*cbc)(in,out,len,key,ivec,1);-
65-
66 in += len;-
67 out += len;-
68-
69 memset(tmp.c,0,sizeof(tmp));-
70 memcpy(tmp.c,in,residue);-
71 memcpy(out,out-16,residue);-
72 (*cbc)(tmp.c,out-16,16,key,ivec,1);-
73 return
executed 6 times by 1 test: return len+residue;
Executed by:
  • cts128test
 len+residue;
executed 6 times by 1 test: return len+residue;
Executed by:
  • cts128test
6
74}-
75-
76size_t CRYPTO_nistcts128_encrypt(const unsigned char *in, unsigned char *out,-
77 size_t len, const void *key,-
78 unsigned char ivec[16], cbc128_f cbc)-
79{ size_t residue;-
80 union { size_t align; unsigned char c[16]; } tmp;-
81-
82 if (len < 16
len < 16Description
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
) return
never executed: return 0;
 0;
never executed: return 0;
0-6
83-
84 residue=len%16;-
85-
86 len -= residue;-
87-
88 (*cbc)(in,out,len,key,ivec,1);-
89-
90 if (residue==0
residue==0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) return
executed 3 times by 1 test: return len;
Executed by:
  • cts128test
 len;
executed 3 times by 1 test: return len;
Executed by:
  • cts128test
3
91-
92 in += len;-
93 out += len;-
94-
95 memset(tmp.c,0,sizeof(tmp));-
96 memcpy(tmp.c,in,residue);-
97 (*cbc)(tmp.c,out-16+residue,16,key,ivec,1);-
98 return
executed 3 times by 1 test: return len+residue;
Executed by:
  • cts128test
 len+residue;
executed 3 times by 1 test: return len+residue;
Executed by:
  • cts128test
3
99}-
100-
101size_t CRYPTO_cts128_decrypt_block(const unsigned char *in, unsigned char *out,-
102 size_t len, const void *key,-
103 unsigned char ivec[16], block128_f block)-
104{ size_t residue, n;-
105 union { size_t align; unsigned char c[32]; } tmp;-
106-
107 if (len<=16
len<=16Description
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
) return
never executed: return 0;
 0;
never executed: return 0;
0-6
108-
109 if ((
(residue=len%16) == 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
residue=len%16) == 0
(residue=len%16) == 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) residue = 16;
executed 3 times by 1 test: residue = 16;
Executed by:
  • cts128test
3
110-
111 len -= 16+residue;-
112-
113 if (len
lenDescription
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) {		3
114 CRYPTO_cbc128_decrypt(in,out,len,key,ivec,block);-
115 in += len;-
116 out += len;-
117 }
executed 3 times by 1 test: end of block
Executed by:
  • cts128test
3
118-
119 (*block)(in,tmp.c+16,key);-
120-
121 memcpy(tmp.c,tmp.c+16,16);-
122 memcpy(tmp.c,in+16,residue);-
123 (*block)(tmp.c,tmp.c,key);-
124-
125 for(n=0; n<16
n<16Description
TRUEevaluated 96 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
; ++n) {		6-96
126 unsigned char c = in[n];-
127 out[n] = tmp.c[n] ^ ivec[n];-
128 ivec[n] = c;-
129 }
executed 96 times by 1 test: end of block
Executed by:
  • cts128test
96
130 for(residue+=16; n<residue
n<residueDescription
TRUEevaluated 79 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
; ++n)		6-79
131 out[n] = tmp.c[n] ^ in[n];
executed 79 times by 1 test: out[n] = tmp.c[n] ^ in[n];
Executed by:
  • cts128test
79
132-
133 return
executed 6 times by 1 test: return 16+len+residue;
Executed by:
  • cts128test
 16+len+residue;
executed 6 times by 1 test: return 16+len+residue;
Executed by:
  • cts128test
6
134}-
135-
136size_t CRYPTO_nistcts128_decrypt_block(const unsigned char *in, unsigned char *out,-
137 size_t len, const void *key,-
138 unsigned char ivec[16], block128_f block)-
139{ size_t residue, n;-
140 union { size_t align; unsigned char c[32]; } tmp;-
141-
142 if (len<16
len<16Description
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
) return
never executed: return 0;
 0;
never executed: return 0;
0-6
143-
144 residue=len%16;-
145-
146 if (residue==0
residue==0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) {		3
147 CRYPTO_cbc128_decrypt(in,out,len,key,ivec,block);-
148 return
executed 3 times by 1 test: return len;
Executed by:
  • cts128test
 len;
executed 3 times by 1 test: return len;
Executed by:
  • cts128test
3
149 }-
150-
151 len -= 16+residue;-
152-
153 if (len
lenDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 2 times by 1 test
Evaluated by:
  • cts128test
) {		1-2
154 CRYPTO_cbc128_decrypt(in,out,len,key,ivec,block);-
155 in += len;-
156 out += len;-
157 }
executed 1 time by 1 test: end of block
Executed by:
  • cts128test
1
158-
159 (*block)(in+residue,tmp.c+16,key);-
160-
161 memcpy(tmp.c,tmp.c+16,16);-
162 memcpy(tmp.c,in,residue);-
163 (*block)(tmp.c,tmp.c,key);-
164-
165 for(n=0; n<16
n<16Description
TRUEevaluated 48 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
; ++n) {		3-48
166 unsigned char c = in[n];-
167 out[n] = tmp.c[n] ^ ivec[n];-
168 ivec[n] = in[n+residue];-
169 tmp.c[n] = c;-
170 }
executed 48 times by 1 test: end of block
Executed by:
  • cts128test
48
171 for(residue+=16; n<residue
n<residueDescription
TRUEevaluated 31 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
; ++n)		3-31
172 out[n] = tmp.c[n] ^ tmp.c[n-16];
executed 31 times by 1 test: out[n] = tmp.c[n] ^ tmp.c[n-16];
Executed by:
  • cts128test
31
173-
174 return
executed 3 times by 1 test: return 16+len+residue;
Executed by:
  • cts128test
 16+len+residue;
executed 3 times by 1 test: return 16+len+residue;
Executed by:
  • cts128test
3
175}-
176-
177size_t CRYPTO_cts128_decrypt(const unsigned char *in, unsigned char *out,-
178 size_t len, const void *key,-
179 unsigned char ivec[16], cbc128_f cbc)-
180{ size_t residue;-
181 union { size_t align; unsigned char c[32]; } tmp;-
182-
183 if (len<=16
len<=16Description
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
) return
never executed: return 0;
 0;
never executed: return 0;
0-6
184-
185 if ((
(residue=len%16) == 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
residue=len%16) == 0
(residue=len%16) == 0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) residue = 16;
executed 3 times by 1 test: residue = 16;
Executed by:
  • cts128test
3
186-
187 len -= 16+residue;-
188-
189 if (len
lenDescription
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) {		3
190 (*cbc)(in,out,len,key,ivec,0);-
191 in += len;-
192 out += len;-
193 }
executed 3 times by 1 test: end of block
Executed by:
  • cts128test
3
194-
195 memset(tmp.c,0,sizeof(tmp));-
196-
197 (*cbc)(in,tmp.c,16,key,tmp.c+16,0);-
198-
199 memcpy(tmp.c,in+16,residue);-
200 (*cbc)(tmp.c,tmp.c,32,key,ivec,0);-
201 memcpy(out,tmp.c,16+residue);-
202 return
executed 6 times by 1 test: return 16+len+residue;
Executed by:
  • cts128test
 16+len+residue;
executed 6 times by 1 test: return 16+len+residue;
Executed by:
  • cts128test
6
203}-
204-
205size_t CRYPTO_nistcts128_decrypt(const unsigned char *in, unsigned char *out,-
206 size_t len, const void *key,-
207 unsigned char ivec[16], cbc128_f cbc)-
208{ size_t residue;-
209 union { size_t align; unsigned char c[32]; } tmp;-
210-
211 if (len<16
len<16Description
TRUEnever evaluated
FALSEevaluated 6 times by 1 test
Evaluated by:
  • cts128test
) return
never executed: return 0;
 0;
never executed: return 0;
0-6
212-
213 residue=len%16;-
214-
215 if (residue==0
residue==0Description
TRUEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 3 times by 1 test
Evaluated by:
  • cts128test
) {		3
216 (*cbc)(in,out,len,key,ivec,0);-
217 return
executed 3 times by 1 test: return len;
Executed by:
  • cts128test
 len;
executed 3 times by 1 test: return len;
Executed by:
  • cts128test
3
218 }-
219-
220 len -= 16+residue;-
221-
222 if (len
lenDescription
TRUEevaluated 1 time by 1 test
Evaluated by:
  • cts128test
FALSEevaluated 2 times by 1 test
Evaluated by:
  • cts128test
) {		1-2
223 (*cbc)(in,out,len,key,ivec,0);-
224 in += len;-
225 out += len;-
226 }
executed 1 time by 1 test: end of block
Executed by:
  • cts128test
1
227-
228 memset(tmp.c,0,sizeof(tmp));-
229-
230 (*cbc)(in+residue,tmp.c,16,key,tmp.c+16,0);-
231-
232 memcpy(tmp.c,in,residue);-
233 (*cbc)(tmp.c,tmp.c,32,key,ivec,0);-
234 memcpy(out,tmp.c,16+residue);-
235 return
executed 3 times by 1 test: return 16+len+residue;
Executed by:
  • cts128test
 16+len+residue;
executed 3 times by 1 test: return 16+len+residue;
Executed by:
  • cts128test
3
236}-
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