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

2 * project 2007.

3 */

4 /* ====================================================================

5 * Copyright (c) 2007 The OpenSSL Project. All rights reserved.

6 *

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

8 * modification, are permitted provided that the following conditions

9 * are met:

10 *

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

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

13 *

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

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

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

17 * distribution.

18 *

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

20 * software must display the following acknowledgment:

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

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

23 *

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

25 * endorse or promote products derived from this software without

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

27 * licensing@OpenSSL.org.

28 *

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

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

31 * permission of the OpenSSL Project.

32 *

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

34 * acknowledgment:

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

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

37 *

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

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

40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

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

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

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

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

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

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

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

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

49 * OF THE POSSIBILITY OF SUCH DAMAGE.

50 * ====================================================================

51 *

52 * This product includes cryptographic software written by Eric Young

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

54 * Hudson (tjh@cryptsoft.com).

55 *

56 */

57

58 #include <stdio.h>

59 #include "cryptlib.h"

60 #include <openssl/evp.h>

61 #include "asn1_locl.h"

62

63 #define HMAC_TEST_PRIVATE_KEY_FORMAT

64

65 /* HMAC "ASN1" method. This is just here to indicate the

66 * maximum HMAC output length and to free up an HMAC

67 * key.

68 */

69

70 static int hmac_size(const EVP_PKEY *pkey)

71 {

72 return EVP_MAX_MD_SIZE;

73 }

74

75 static void hmac_key_free(EVP_PKEY *pkey)

76 {

77 ASN1_OCTET_STRING os = (ASN1_OCTET_STRING )pkey->pkey.ptr;

78 if (os)

79 {

80 if (os->data)

81 OPENSSL_cleanse(os->data, os->length);

82 ASN1_OCTET_STRING_free(os);

83 }

84 }

85

86

87 static int hmac_pkey_ctrl(EVP_PKEY pkey, int op, long arg1, void arg2)

88 {

89 switch (op)

90 {

91 case ASN1_PKEY_CTRL_DEFAULT_MD_NID:

92 (int )arg2 = NID_sha1;

93 return 1;

94

95 default:

96 return -2;

97 }

98 }

99

100 #ifdef HMAC_TEST_PRIVATE_KEY_FORMAT

101 /* A bogus private key format for test purposes. This is simply the

102 * HMAC key with "HMAC PRIVATE KEY" in the headers. When enabled the

103 * genpkey utility can be used to "generate" HMAC keys.

104 */

105

106 static int old_hmac_decode(EVP_PKEY *pkey,

107 const unsigned char **pder, int derlen)

108 {

109 ASN1_OCTET_STRING *os;

110 os = ASN1_OCTET_STRING_new();

111 if (!os \|\| !ASN1_OCTET_STRING_set(os, *pder, derlen))

112 return 0;

113 EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, os);

114 return 1;

115 }

116

117 static int old_hmac_encode(const EVP_PKEY pkey, unsigned char *pder)

118 {

119 int inc;

120 ASN1_OCTET_STRING os = (ASN1_OCTET_STRING )pkey->pkey.ptr;

121 if (pder)

122 {

123 if (!*pder)

124 {

125 *pder = OPENSSL_malloc(os->length);

126 inc = 0;

127 }

128 else inc = 1;

129

130 memcpy(*pder, os->data, os->length);

131

132 if (inc)

133 *pder += os->length;

134 }

135

136 return os->length;

137 }

138

139 #endif

140

141 const EVP_PKEY_ASN1_METHOD hmac_asn1_meth =

142 {

143 EVP_PKEY_HMAC,

144 EVP_PKEY_HMAC,

145 0,

146

147 "HMAC",

148 "OpenSSL HMAC method",

149

150 0,0,0,0,

151

152 0,0,0,

153

154 hmac_size,

155 0,

156 0,0,0,0,0,0,0,

157

158 hmac_key_free,

159 hmac_pkey_ctrl,

160 #ifdef HMAC_TEST_PRIVATE_KEY_FORMAT

161 old_hmac_decode,

162 old_hmac_encode

163 #else

164 0,0

165 #endif

166 };

167

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