openssl/crypto/engine/tb_cipher.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 /* ====================================================================

2 * Copyright (c) 2000 The OpenSSL Project. All rights reserved.

3 *

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

5 * modification, are permitted provided that the following conditions

6 * are met:

7 *

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

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

10 *

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

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

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

14 * distribution.

15 *

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

17 * software must display the following acknowledgment:

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

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

20 *

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

22 * endorse or promote products derived from this software without

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

24 * licensing@OpenSSL.org.

25 *

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

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

28 * permission of the OpenSSL Project.

29 *

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

31 * acknowledgment:

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

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

34 *

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

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

37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

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

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

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

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

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

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

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

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

46 * OF THE POSSIBILITY OF SUCH DAMAGE.

47 * ====================================================================

48 *

49 * This product includes cryptographic software written by Eric Young

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

51 * Hudson (tjh@cryptsoft.com).

52 *

53 */

54

55 #include "eng_int.h"

56

57 /* If this symbol is defined then ENGINE_get_cipher_engine(), the function that

58 * is used by EVP to hook in cipher code and cache defaults (etc), will display

59 * brief debugging summaries to stderr with the 'nid'. */

60 /* #define ENGINE_CIPHER_DEBUG */

61

62 static ENGINE_TABLE *cipher_table = NULL;

63

64 void ENGINE_unregister_ciphers(ENGINE *e)

65 {

66 engine_table_unregister(&cipher_table, e);

67 }

68

69 static void engine_unregister_all_ciphers(void)

70 {

71 engine_table_cleanup(&cipher_table);

72 }

73

74 int ENGINE_register_ciphers(ENGINE *e)

75 {

76 if(e->ciphers)

77 {

78 const int *nids;

79 int num_nids = e->ciphers(e, NULL, &nids, 0);

80 if(num_nids > 0)

81 return engine_table_register(&cipher_table,

82 engine_unregister_all_ciphers, e, nids,

83 num_nids, 0);

84 }

85 return 1;

86 }

87

88 void ENGINE_register_all_ciphers()

89 {

90 ENGINE *e;

91

92 for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))

93 ENGINE_register_ciphers(e);

94 }

95

96 int ENGINE_set_default_ciphers(ENGINE *e)

97 {

98 if(e->ciphers)

99 {

100 const int *nids;

101 int num_nids = e->ciphers(e, NULL, &nids, 0);

102 if(num_nids > 0)

103 return engine_table_register(&cipher_table,

104 engine_unregister_all_ciphers, e, nids,

105 num_nids, 1);

106 }

107 return 1;

108 }

109

110 /* Exposed API function to get a functional reference from the implementation

111 * table (ie. try to get a functional reference from the tabled structural

112 * references) for a given cipher 'nid' */

113 ENGINE *ENGINE_get_cipher_engine(int nid)

114 {

115 return engine_table_select(&cipher_table, nid);

116 }

117

118 /* Obtains a cipher implementation from an ENGINE functional reference */

119 const EVP_CIPHER ENGINE_get_cipher(ENGINE e, int nid)

120 {

121 const EVP_CIPHER *ret;

122 ENGINE_CIPHERS_PTR fn = ENGINE_get_ciphers(e);

123 if(!fn \|\| !fn(e, &ret, NULL, nid))

124 {

125 ENGINEerr(ENGINE_F_ENGINE_GET_CIPHER,

126 ENGINE_R_UNIMPLEMENTED_CIPHER);

127 return NULL;

128 }

129 return ret;

130 }

131

132 /* Gets the cipher callback from an ENGINE structure */

133 ENGINE_CIPHERS_PTR ENGINE_get_ciphers(const ENGINE *e)

134 {

135 return e->ciphers;

136 }

137

138 /* Sets the cipher callback in an ENGINE structure */

139 int ENGINE_set_ciphers(ENGINE *e, ENGINE_CIPHERS_PTR f)

140 {

141 e->ciphers = f;

142 return 1;

143 }

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