openssl/crypto/ec/ec_print.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/ec/ec_print.c */

2 /* ====================================================================

3 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.

4 *

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

6 * modification, are permitted provided that the following conditions

7 * are met:

8 *

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

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

11 *

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

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

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

15 * distribution.

16 *

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

18 * software must display the following acknowledgment:

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

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

21 *

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

23 * endorse or promote products derived from this software without

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

25 * openssl-core@openssl.org.

26 *

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

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

29 * permission of the OpenSSL Project.

30 *

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

32 * acknowledgment:

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

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

35 *

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

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

38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

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

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

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

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

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

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

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

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

47 * OF THE POSSIBILITY OF SUCH DAMAGE.

48 * ====================================================================

49 *

50 * This product includes cryptographic software written by Eric Young

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

52 * Hudson (tjh@cryptsoft.com).

53 *

54 */

55

56 #include <openssl/crypto.h>

57 #include "ec_lcl.h"

58

59 BIGNUM EC_POINT_point2bn(const EC_GROUP group,

60 const EC_POINT *point,

61 point_conversion_form_t form,

62 BIGNUM *ret,

63 BN_CTX *ctx)

64 {

65 size_t buf_len=0;

66 unsigned char *buf;

67

68 buf_len = EC_POINT_point2oct(group, point, form,

69 NULL, 0, ctx);

70 if (buf_len == 0)

71 return NULL;

72

73 if ((buf = OPENSSL_malloc(buf_len)) == NULL)

74 return NULL;

75

76 if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx))

77 {

78 OPENSSL_free(buf);

79 return NULL;

80 }

81

82 ret = BN_bin2bn(buf, buf_len, ret);

83

84 OPENSSL_free(buf);

85

86 return ret;

87 }

88

89 EC_POINT EC_POINT_bn2point(const EC_GROUP group,

90 const BIGNUM *bn,

91 EC_POINT *point,

92 BN_CTX *ctx)

93 {

94 size_t buf_len=0;

95 unsigned char *buf;

96 EC_POINT *ret;

97

98 if ((buf_len = BN_num_bytes(bn)) == 0) return NULL;

99 buf = OPENSSL_malloc(buf_len);

100 if (buf == NULL)

101 return NULL;

102

103 if (!BN_bn2bin(bn, buf))

104 {

105 OPENSSL_free(buf);

106 return NULL;

107 }

108

109 if (point == NULL)

110 {

111 if ((ret = EC_POINT_new(group)) == NULL)

112 {

113 OPENSSL_free(buf);

114 return NULL;

115 }

116 }

117 else

118 ret = point;

119

120 if (!EC_POINT_oct2point(group, ret, buf, buf_len, ctx))

121 {

122 if (point == NULL)

123 EC_POINT_clear_free(ret);

124 OPENSSL_free(buf);

125 return NULL;

126 }

127

128 OPENSSL_free(buf);

129 return ret;

130 }

131

132 static const char *HEX_DIGITS = "0123456789ABCDEF";

133

134 /* the return value must be freed (using OPENSSL_free()) */

135 char EC_POINT_point2hex(const EC_GROUP group,

136 const EC_POINT *point,

137 point_conversion_form_t form,

138 BN_CTX *ctx)

139 {

140 char ret, p;

141 size_t buf_len=0,i;

142 unsigned char buf, pbuf;

143

144 buf_len = EC_POINT_point2oct(group, point, form,

145 NULL, 0, ctx);

146 if (buf_len == 0)

147 return NULL;

148

149 if ((buf = OPENSSL_malloc(buf_len)) == NULL)

150 return NULL;

151

152 if (!EC_POINT_point2oct(group, point, form, buf, buf_len, ctx))

153 {

154 OPENSSL_free(buf);

155 return NULL;

156 }

157

158 ret = (char )OPENSSL_malloc(buf_len2+2);

159 if (ret == NULL)

160 {

161 OPENSSL_free(buf);

162 return NULL;

163 }

164 p = ret;

165 pbuf = buf;

166 for (i=buf_len; i > 0; i--)

167 {

168 int v = (int) *(pbuf++);

169 *(p++)=HEX_DIGITS[v>>4];

170 *(p++)=HEX_DIGITS[v&0x0F];

171 }

172 *p='\0';

173

174 OPENSSL_free(buf);

175

176 return ret;

177 }

178

179 EC_POINT EC_POINT_hex2point(const EC_GROUP group,

180 const char *buf,

181 EC_POINT *point,

182 BN_CTX *ctx)

183 {

184 EC_POINT *ret=NULL;

185 BIGNUM *tmp_bn=NULL;

186

187 if (!BN_hex2bn(&tmp_bn, buf))

188 return NULL;

189

190 ret = EC_POINT_bn2point(group, tmp_bn, point, ctx);

191

192 BN_clear_free(tmp_bn);

193

194 return ret;

195 }

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