openssl/crypto/rsa/rsa_ssl.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/rsa/rsa_ssl.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 <stdio.h>

60 #include "cryptlib.h"

61 #include <openssl/bn.h>

62 #include <openssl/rsa.h>

63 #include <openssl/rand.h>

64

65 int RSA_padding_add_SSLv23(unsigned char *to, int tlen,

66 const unsigned char *from, int flen)

67 {

68 int i,j;

69 unsigned char *p;

70

71 if (flen > (tlen-11))

72 {

73 RSAerr(RSA_F_RSA_PADDING_ADD_SSLV23,RSA_R_DATA_TOO_LARGE_FOR_KEY _SIZE);

74 return(0);

75 }

76

77 p=(unsigned char *)to;

78

79 *(p++)=0;

80 (p++)=2; / Public Key BT (Block Type) */

81

82 /* pad out with non-zero random data */

83 j=tlen-3-8-flen;

84

85 if (RAND_bytes(p,j) <= 0)

86 return(0);

87 for (i=0; i<j; i++)

88 {

89 if (*p == '\0')

90 do {

91 if (RAND_bytes(p,1) <= 0)

92 return(0);

93 } while (*p == '\0');

94 p++;

95 }

96

97 memset(p,3,8);

98 p+=8;

99 *(p++)='\0';

100

101 memcpy(p,from,(unsigned int)flen);

102 return(1);

103 }

104

105 int RSA_padding_check_SSLv23(unsigned char *to, int tlen,

106 const unsigned char *from, int flen, int num)

107 {

108 int i,j,k;

109 const unsigned char *p;

110

111 p=from;

112 if (flen < 10)

113 {

114 RSAerr(RSA_F_RSA_PADDING_CHECK_SSLV23,RSA_R_DATA_TOO_SMALL);

115 return(-1);

116 }

117 if ((num != (flen+1)) \|\| (*(p++) != 02))

118 {

119 RSAerr(RSA_F_RSA_PADDING_CHECK_SSLV23,RSA_R_BLOCK_TYPE_IS_NOT_02 );

120 return(-1);

121 }

122

123 /* scan over padding data */

124 j=flen-1; /* one for type */

125 for (i=0; i<j; i++)

126 if (*(p++) == 0) break;

127

128 if ((i == j) \|\| (i < 8))

129 {

130 RSAerr(RSA_F_RSA_PADDING_CHECK_SSLV23,RSA_R_NULL_BEFORE_BLOCK_MI SSING);

131 return(-1);

132 }

133 for (k = -9; k<-1; k++)

134 {

135 if (p[k] != 0x03) break;

136 }

137 if (k == -1)

138 {

139 RSAerr(RSA_F_RSA_PADDING_CHECK_SSLV23,RSA_R_SSLV3_ROLLBACK_ATTAC K);

140 return(-1);

141 }

142

143 i++; /* Skip over the '\0' */

144 j-=i;

145 if (j > tlen)

146 {

147 RSAerr(RSA_F_RSA_PADDING_CHECK_SSLV23,RSA_R_DATA_TOO_LARGE);

148 return(-1);

149 }

150 memcpy(to,p,(unsigned int)j);

151

152 return(j);

153 }

154

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