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cfb64enc.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/des/cfb64enc.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 encrypted as though 64bit cfb mode is being used.-
14 * The extra state information to record how much of the 64bit block we have-
15 * used is contained in *num;-
16 */-
17-
18void DES_cfb64_encrypt(const unsigned char *in, unsigned char *out,-
19 long length, DES_key_schedule *schedule,-
20 DES_cblock *ivec, int *num, int enc)-
21{-
22 register DES_LONG v0, v1;-
23 register long l = length;-
24 register int n = *num;-
25 DES_LONG ti[2];-
26 unsigned char *iv, c, cc;-
27-
28 iv = &(*ivec)[0];-
29 if (enc) {
encDescription
TRUEevaluated 43 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 31 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
31-43
30 while (l--) {
l--Description
TRUEevaluated 6302 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 43 times by 1 test
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  • libcrypto.so.1.1
43-6302
31 if (n == 0) {
n == 0Description
TRUEevaluated 788 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 5514 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
788-5514
32 c2l(iv, v0);-
33 ti[0] = v0;-
34 c2l(iv, v1);-
35 ti[1] = v1;-
36 DES_encrypt1(ti, schedule, DES_ENCRYPT);-
37 iv = &(*ivec)[0];-
38 v0 = ti[0];-
39 l2c(v0, iv);-
40 v0 = ti[1];-
41 l2c(v0, iv);-
42 iv = &(*ivec)[0];-
43 }
executed 788 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
788
44 c = *(in++) ^ iv[n];-
45 *(out++) = c;-
46 iv[n] = c;-
47 n = (n + 1) & 0x07;-
48 }
executed 6302 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
6302
49 } else {
executed 43 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
43
50 while (l--) {
l--Description
TRUEevaluated 6302 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 31 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
31-6302
51 if (n == 0) {
n == 0Description
TRUEevaluated 788 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
FALSEevaluated 5514 times by 1 test
Evaluated by:
  • libcrypto.so.1.1
788-5514
52 c2l(iv, v0);-
53 ti[0] = v0;-
54 c2l(iv, v1);-
55 ti[1] = v1;-
56 DES_encrypt1(ti, schedule, DES_ENCRYPT);-
57 iv = &(*ivec)[0];-
58 v0 = ti[0];-
59 l2c(v0, iv);-
60 v0 = ti[1];-
61 l2c(v0, iv);-
62 iv = &(*ivec)[0];-
63 }
executed 788 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
788
64 cc = *(in++);-
65 c = iv[n];-
66 iv[n] = cc;-
67 *(out++) = c ^ cc;-
68 n = (n + 1) & 0x07;-
69 }
executed 6302 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
6302
70 }
executed 31 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
31
71 v0 = v1 = ti[0] = ti[1] = c = cc = 0;-
72 *num = n;-
73}
executed 74 times by 1 test: end of block
Executed by:
  • libcrypto.so.1.1
74
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