Absolute File Name: | /home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/bf/bf_cfb64.c |
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1 | /* $OpenBSD: bf_cfb64.c,v 1.5 2014/10/28 07:35:58 jsg Exp $ */ | - | ||||||
2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) | - | ||||||
3 | * All rights reserved. | - | ||||||
4 | * | - | ||||||
5 | * This package is an SSL implementation written | - | ||||||
6 | * by Eric Young (eay@cryptsoft.com). | - | ||||||
7 | * The implementation was written so as to conform with Netscapes SSL. | - | ||||||
8 | * | - | ||||||
9 | * This library is free for commercial and non-commercial use as long as | - | ||||||
10 | * the following conditions are aheared to. The following conditions | - | ||||||
11 | * apply to all code found in this distribution, be it the RC4, RSA, | - | ||||||
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | - | ||||||
13 | * included with this distribution is covered by the same copyright terms | - | ||||||
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | - | ||||||
15 | * | - | ||||||
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | - | ||||||
17 | * the code are not to be removed. | - | ||||||
18 | * If this package is used in a product, Eric Young should be given attribution | - | ||||||
19 | * as the author of the parts of the library used. | - | ||||||
20 | * This can be in the form of a textual message at program startup or | - | ||||||
21 | * in documentation (online or textual) provided with the package. | - | ||||||
22 | * | - | ||||||
23 | * Redistribution and use in source and binary forms, with or without | - | ||||||
24 | * modification, are permitted provided that the following conditions | - | ||||||
25 | * are met: | - | ||||||
26 | * 1. Redistributions of source code must retain the copyright | - | ||||||
27 | * notice, this list of conditions and the following disclaimer. | - | ||||||
28 | * 2. Redistributions in binary form must reproduce the above copyright | - | ||||||
29 | * notice, this list of conditions and the following disclaimer in the | - | ||||||
30 | * documentation and/or other materials provided with the distribution. | - | ||||||
31 | * 3. All advertising materials mentioning features or use of this software | - | ||||||
32 | * must display the following acknowledgement: | - | ||||||
33 | * "This product includes cryptographic software written by | - | ||||||
34 | * Eric Young (eay@cryptsoft.com)" | - | ||||||
35 | * The word 'cryptographic' can be left out if the rouines from the library | - | ||||||
36 | * being used are not cryptographic related :-). | - | ||||||
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | - | ||||||
38 | * the apps directory (application code) you must include an acknowledgement: | - | ||||||
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | - | ||||||
40 | * | - | ||||||
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | - | ||||||
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | - | ||||||
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | - | ||||||
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | - | ||||||
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | - | ||||||
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | - | ||||||
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | - | ||||||
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | - | ||||||
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | - | ||||||
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | - | ||||||
51 | * SUCH DAMAGE. | - | ||||||
52 | * | - | ||||||
53 | * The licence and distribution terms for any publically available version or | - | ||||||
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | - | ||||||
55 | * copied and put under another distribution licence | - | ||||||
56 | * [including the GNU Public Licence.] | - | ||||||
57 | */ | - | ||||||
58 | - | |||||||
59 | #include <openssl/blowfish.h> | - | ||||||
60 | #include "bf_locl.h" | - | ||||||
61 | - | |||||||
62 | /* The input and output encrypted as though 64bit cfb mode is being | - | ||||||
63 | * used. The extra state information to record how much of the | - | ||||||
64 | * 64bit block we have used is contained in *num; | - | ||||||
65 | */ | - | ||||||
66 | - | |||||||
67 | void BF_cfb64_encrypt(const unsigned char *in, unsigned char *out, long length, | - | ||||||
68 | const BF_KEY *schedule, unsigned char *ivec, int *num, int encrypt) | - | ||||||
69 | { | - | ||||||
70 | BF_LONG v0,v1,t; | - | ||||||
71 | int n= *num; | - | ||||||
72 | long l=length; | - | ||||||
73 | BF_LONG ti[2]; | - | ||||||
74 | unsigned char *iv,c,cc; | - | ||||||
75 | - | |||||||
76 | iv=(unsigned char *)ivec; | - | ||||||
77 | if (encrypt)
| 4 | ||||||
78 | { | - | ||||||
79 | while (l--)
| 4-1805 | ||||||
80 | { | - | ||||||
81 | if (n == 0)
| 226-1579 | ||||||
82 | { | - | ||||||
83 | n2l(iv,v0); ti[0]=v0; | - | ||||||
84 | n2l(iv,v1); ti[1]=v1; | - | ||||||
85 | BF_encrypt((BF_LONG *)ti,schedule); | - | ||||||
86 | iv=(unsigned char *)ivec; | - | ||||||
87 | t=ti[0]; l2n(t,iv); | - | ||||||
88 | t=ti[1]; l2n(t,iv); | - | ||||||
89 | iv=(unsigned char *)ivec; | - | ||||||
90 | } executed 226 times by 2 tests: end of block Executed by:
| 226 | ||||||
91 | c= *(in++)^iv[n]; | - | ||||||
92 | *(out++)=c; | - | ||||||
93 | iv[n]=c; | - | ||||||
94 | n=(n+1)&0x07; | - | ||||||
95 | } executed 1805 times by 2 tests: end of block Executed by:
| 1805 | ||||||
96 | } executed 4 times by 2 tests: end of block Executed by:
| 4 | ||||||
97 | else | - | ||||||
98 | { | - | ||||||
99 | while (l--)
| 4-1805 | ||||||
100 | { | - | ||||||
101 | if (n == 0)
| 226-1579 | ||||||
102 | { | - | ||||||
103 | n2l(iv,v0); ti[0]=v0; | - | ||||||
104 | n2l(iv,v1); ti[1]=v1; | - | ||||||
105 | BF_encrypt((BF_LONG *)ti,schedule); | - | ||||||
106 | iv=(unsigned char *)ivec; | - | ||||||
107 | t=ti[0]; l2n(t,iv); | - | ||||||
108 | t=ti[1]; l2n(t,iv); | - | ||||||
109 | iv=(unsigned char *)ivec; | - | ||||||
110 | } executed 226 times by 2 tests: end of block Executed by:
| 226 | ||||||
111 | cc= *(in++); | - | ||||||
112 | c=iv[n]; | - | ||||||
113 | iv[n]=cc; | - | ||||||
114 | *(out++)=c^cc; | - | ||||||
115 | n=(n+1)&0x07; | - | ||||||
116 | } executed 1805 times by 2 tests: end of block Executed by:
| 1805 | ||||||
117 | } executed 4 times by 2 tests: end of block Executed by:
| 4 | ||||||
118 | v0=v1=ti[0]=ti[1]=t=c=cc=0; | - | ||||||
119 | *num=n; | - | ||||||
120 | } executed 8 times by 2 tests: end of block Executed by:
| 8 | ||||||
121 | - | |||||||
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