Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/des/ofb_enc.c |
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1 | /* | - | ||||||
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | - | ||||||
3 | * | - | ||||||
4 | * Licensed under the OpenSSL license (the "License"). You may not use | - | ||||||
5 | * this file except in compliance with the License. You can obtain a copy | - | ||||||
6 | * in the file LICENSE in the source distribution or at | - | ||||||
7 | * https://www.openssl.org/source/license.html | - | ||||||
8 | */ | - | ||||||
9 | - | |||||||
10 | #include "des_locl.h" | - | ||||||
11 | - | |||||||
12 | /* | - | ||||||
13 | * The input and output are loaded in multiples of 8 bits. What this means is | - | ||||||
14 | * that if you have numbits=12 and length=2 the first 12 bits will be | - | ||||||
15 | * retrieved from the first byte and half the second. The second 12 bits | - | ||||||
16 | * will come from the 3rd and half the 4th byte. | - | ||||||
17 | */ | - | ||||||
18 | void DES_ofb_encrypt(const unsigned char *in, unsigned char *out, int numbits, | - | ||||||
19 | long length, DES_key_schedule *schedule, | - | ||||||
20 | DES_cblock *ivec) | - | ||||||
21 | { | - | ||||||
22 | register DES_LONG d0, d1, vv0, vv1, v0, v1, n = (numbits + 7) / 8; | - | ||||||
23 | register DES_LONG mask0, mask1; | - | ||||||
24 | register long l = length; | - | ||||||
25 | register int num = numbits; | - | ||||||
26 | DES_LONG ti[2]; | - | ||||||
27 | unsigned char *iv; | - | ||||||
28 | - | |||||||
29 | if (num > 64)
| 0-2 | ||||||
30 | return; never executed: return; | 0 | ||||||
31 | if (num > 32) {
| 0-2 | ||||||
32 | mask0 = 0xffffffffL; | - | ||||||
33 | if (num >= 64)
| 0-2 | ||||||
34 | mask1 = mask0; executed 2 times by 1 test: mask1 = mask0; Executed by:
| 2 | ||||||
35 | else | - | ||||||
36 | mask1 = (1L << (num - 32)) - 1; never executed: mask1 = (1L << (num - 32)) - 1; | 0 | ||||||
37 | } else { | - | ||||||
38 | if (num == 32)
| 0 | ||||||
39 | mask0 = 0xffffffffL; never executed: mask0 = 0xffffffffL; | 0 | ||||||
40 | else | - | ||||||
41 | mask0 = (1L << num) - 1; never executed: mask0 = (1L << num) - 1; | 0 | ||||||
42 | mask1 = 0x00000000L; | - | ||||||
43 | } never executed: end of block | 0 | ||||||
44 | - | |||||||
45 | iv = &(*ivec)[0]; | - | ||||||
46 | c2l(iv, v0); | - | ||||||
47 | c2l(iv, v1); | - | ||||||
48 | ti[0] = v0; | - | ||||||
49 | ti[1] = v1; | - | ||||||
50 | while (l-- > 0) {
| 2-6 | ||||||
51 | ti[0] = v0; | - | ||||||
52 | ti[1] = v1; | - | ||||||
53 | DES_encrypt1((DES_LONG *)ti, schedule, DES_ENCRYPT); | - | ||||||
54 | vv0 = ti[0]; | - | ||||||
55 | vv1 = ti[1]; | - | ||||||
56 | c2ln(in, d0, d1, n); executed 6 times by 1 test: end of block Executed by:
code before this statement executed 6 times by 1 test: case 7: Executed by:
code before this statement executed 6 times by 1 test: case 6: Executed by:
code before this statement executed 6 times by 1 test: case 5: Executed by:
code before this statement executed 6 times by 1 test: case 4: Executed by:
code before this statement executed 6 times by 1 test: case 3: Executed by:
code before this statement executed 6 times by 1 test: case 2: Executed by:
code before this statement executed 6 times by 1 test: case 1: Executed by:
executed 6 times by 1 test: case 8: Executed by:
never executed: case 7: never executed: case 6: never executed: case 5: never executed: case 4: never executed: case 3: never executed: case 2: executed 6 times by 1 test: case 1: Executed by:
| 0-6 | ||||||
57 | in += n; | - | ||||||
58 | d0 = (d0 ^ vv0) & mask0; | - | ||||||
59 | d1 = (d1 ^ vv1) & mask1; | - | ||||||
60 | l2cn(d0, d1, out, n); executed 6 times by 1 test: end of block Executed by:
code before this statement executed 6 times by 1 test: case 7: Executed by:
code before this statement executed 6 times by 1 test: case 6: Executed by:
code before this statement executed 6 times by 1 test: case 5: Executed by:
code before this statement executed 6 times by 1 test: case 4: Executed by:
code before this statement executed 6 times by 1 test: case 3: Executed by:
code before this statement executed 6 times by 1 test: case 2: Executed by:
code before this statement executed 6 times by 1 test: case 1: Executed by:
executed 6 times by 1 test: case 8: Executed by:
never executed: case 7: never executed: case 6: never executed: case 5: never executed: case 4: never executed: case 3: never executed: case 2: executed 6 times by 1 test: case 1: Executed by:
| 0-6 | ||||||
61 | out += n; | - | ||||||
62 | - | |||||||
63 | if (num == 32) {
| 0-6 | ||||||
64 | v0 = v1; | - | ||||||
65 | v1 = vv0; | - | ||||||
66 | } else if (num == 64) { never executed: end of block
| 0-6 | ||||||
67 | v0 = vv0; | - | ||||||
68 | v1 = vv1; | - | ||||||
69 | } else if (num > 32) { /* && num != 64 */ executed 6 times by 1 test: end of block Executed by:
| 0-6 | ||||||
70 | v0 = ((v1 >> (num - 32)) | (vv0 << (64 - num))) & 0xffffffffL; | - | ||||||
71 | v1 = ((vv0 >> (num - 32)) | (vv1 << (64 - num))) & 0xffffffffL; | - | ||||||
72 | } else { /* num < 32 */ never executed: end of block | 0 | ||||||
73 | - | |||||||
74 | v0 = ((v0 >> num) | (v1 << (32 - num))) & 0xffffffffL; | - | ||||||
75 | v1 = ((v1 >> num) | (vv0 << (32 - num))) & 0xffffffffL; | - | ||||||
76 | } never executed: end of block | 0 | ||||||
77 | } | - | ||||||
78 | iv = &(*ivec)[0]; | - | ||||||
79 | l2c(v0, iv); | - | ||||||
80 | l2c(v1, iv); | - | ||||||
81 | v0 = v1 = d0 = d1 = ti[0] = ti[1] = vv0 = vv1 = 0; | - | ||||||
82 | } executed 2 times by 1 test: end of block Executed by:
| 2 | ||||||
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