openssl/crypto/rsa/rsa_x931.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 /* rsa_x931.c */

2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL

3 * project 2005.

4 */

5 /* ====================================================================

6 * Copyright (c) 2005 The OpenSSL Project. All rights reserved.

7 *

8 * Redistribution and use in source and binary forms, with or without

9 * modification, are permitted provided that the following conditions

10 * are met:

11 *

12 * 1. Redistributions of source code must retain the above copyright

13 * notice, this list of conditions and the following disclaimer.

14 *

15 * 2. Redistributions in binary form must reproduce the above copyright

16 * notice, this list of conditions and the following disclaimer in

17 * the documentation and/or other materials provided with the

18 * distribution.

19 *

20 * 3. All advertising materials mentioning features or use of this

21 * software must display the following acknowledgment:

22 * "This product includes software developed by the OpenSSL Project

23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"

24 *

25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

26 * endorse or promote products derived from this software without

27 * prior written permission. For written permission, please contact

28 * licensing@OpenSSL.org.

29 *

30 * 5. Products derived from this software may not be called "OpenSSL"

31 * nor may "OpenSSL" appear in their names without prior written

32 * permission of the OpenSSL Project.

33 *

34 * 6. Redistributions of any form whatsoever must retain the following

35 * acknowledgment:

36 * "This product includes software developed by the OpenSSL Project

37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"

38 *

39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR

43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

50 * OF THE POSSIBILITY OF SUCH DAMAGE.

51 * ====================================================================

52 *

53 * This product includes cryptographic software written by Eric Young

54 * (eay@cryptsoft.com). This product includes software written by Tim

55 * Hudson (tjh@cryptsoft.com).

56 *

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 #include <openssl/objects.h>

65

66 int RSA_padding_add_X931(unsigned char *to, int tlen,

67 const unsigned char *from, int flen)

68 {

69 int j;

70 unsigned char *p;

71

72 /* Absolute minimum amount of padding is 1 header nibble, 1 padding

73 * nibble and 2 trailer bytes: but 1 hash if is already in 'from'.

74 */

75

76 j = tlen - flen - 2;

77

78 if (j < 0)

79 {

80 RSAerr(RSA_F_RSA_PADDING_ADD_X931,RSA_R_DATA_TOO_LARGE_FOR_KEY_S IZE);

81 return -1;

82 }

83

84 p=(unsigned char *)to;

85

86 /* If no padding start and end nibbles are in one byte */

87 if (j == 0)

88 *p++ = 0x6A;

89 else

90 {

91 *p++ = 0x6B;

92 if (j > 1)

93 {

94 memset(p, 0xBB, j - 1);

95 p += j - 1;

96 }

97 *p++ = 0xBA;

98 }

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

100 p += flen;

101 *p = 0xCC;

102 return(1);

103 }

104

105 int RSA_padding_check_X931(unsigned char *to, int tlen,

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

107 {

108 int i = 0,j;

109 const unsigned char *p;

110

111 p=from;

112 if ((num != flen) \|\| ((p != 0x6A) && (p != 0x6B)))

113 {

114 RSAerr(RSA_F_RSA_PADDING_CHECK_X931,RSA_R_INVALID_HEADER);

115 return -1;

116 }

117

118 if (*p++ == 0x6B)

119 {

120 j=flen-3;

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

122 {

123 unsigned char c = *p++;

124 if (c == 0xBA)

125 break;

126 if (c != 0xBB)

127 {

128 RSAerr(RSA_F_RSA_PADDING_CHECK_X931,

129 RSA_R_INVALID_PADDING);

130 return -1;

131 }

132 }

133

134 j -= i;

135

136 if (i == 0)

137 {

138 RSAerr(RSA_F_RSA_PADDING_CHECK_X931, RSA_R_INVALID_PADDI NG);

139 return -1;

140 }

141

142 }

143 else j = flen - 2;

144

145 if (p[j] != 0xCC)

146 {

147 RSAerr(RSA_F_RSA_PADDING_CHECK_X931, RSA_R_INVALID_TRAILER);

148 return -1;

149 }

150

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

152

153 return(j);

154 }

155

156 /* Translate between X931 hash ids and NIDs */

157

158 int RSA_X931_hash_id(int nid)

159 {

160 switch (nid)

161 {

162 case NID_sha1:

163 return 0x33;

164

165 case NID_sha256:

166 return 0x34;

167

168 case NID_sha384:

169 return 0x36;

170

171 case NID_sha512:

172 return 0x35;

173

174 }

175 return -1;

176 }

177

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