openssl/crypto/bf/bf_cfb64.c - Issue 2072073002: Delete bundled copy of OpenSSL and replace with README.

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Issue 2072073002: Delete bundled copy of OpenSSL and replace with README. (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/openssl@master

Patch Set: Delete bundled copy of OpenSSL and replace with README. Created 4 years, 6 months ago

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1 /* crypto/bf/bf_cfb64.c */

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 register BF_LONG v0,v1,t;

71 register int n= *num;

72 register long l=length;

73 BF_LONG ti[2];

74 unsigned char *iv,c,cc;

75

76 iv=(unsigned char *)ivec;

77 if (encrypt)

78 {

79 while (l--)

80 {

81 if (n == 0)

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 }

91 c= *(in++)^iv[n];

92 *(out++)=c;

93 iv[n]=c;

94 n=(n+1)&0x07;

95 }

96 }

97 else

98 {

99 while (l--)

100 {

101 if (n == 0)

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 }

111 cc= *(in++);

112 c=iv[n];

113 iv[n]=cc;

114 *(out++)=c^cc;

115 n=(n+1)&0x07;

116 }

117 }

118 v0=v1=ti[0]=ti[1]=t=c=cc=0;

119 *num=n;

120 }

121

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