openssl/crypto/des/pcbc_enc.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/des/pcbc_enc.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 "des_locl.h"

60

61 void DES_pcbc_encrypt(const unsigned char input, unsigned char output,

62 long length, DES_key_schedule *schedule,

63 DES_cblock *ivec, int enc)

64 {

65 register DES_LONG sin0,sin1,xor0,xor1,tout0,tout1;

66 DES_LONG tin[2];

67 const unsigned char *in;

68 unsigned char out,iv;

69

70 in=input;

71 out=output;

72 iv = &(*ivec)[0];

73

74 if (enc)

75 {

76 c2l(iv,xor0);

77 c2l(iv,xor1);

78 for (; length>0; length-=8)

79 {

80 if (length >= 8)

81 {

82 c2l(in,sin0);

83 c2l(in,sin1);

84 }

85 else

86 c2ln(in,sin0,sin1,length);

87 tin[0]=sin0^xor0;

88 tin[1]=sin1^xor1;

89 DES_encrypt1((DES_LONG *)tin,schedule,DES_ENCRYPT);

90 tout0=tin[0];

91 tout1=tin[1];

92 xor0=sin0^tout0;

93 xor1=sin1^tout1;

94 l2c(tout0,out);

95 l2c(tout1,out);

96 }

97 }

98 else

99 {

100 c2l(iv,xor0); c2l(iv,xor1);

101 for (; length>0; length-=8)

102 {

103 c2l(in,sin0);

104 c2l(in,sin1);

105 tin[0]=sin0;

106 tin[1]=sin1;

107 DES_encrypt1((DES_LONG *)tin,schedule,DES_DECRYPT);

108 tout0=tin[0]^xor0;

109 tout1=tin[1]^xor1;

110 if (length >= 8)

111 {

112 l2c(tout0,out);

113 l2c(tout1,out);

114 }

115 else

116 l2cn(tout0,tout1,out,length);

117 xor0=tout0^sin0;

118 xor1=tout1^sin1;

119 }

120 }

121 tin[0]=tin[1]=0;

122 sin0=sin1=xor0=xor1=tout0=tout1=0;

123 }

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