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1 /* crypto/dsa/dsa.h */ |
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2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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3 * All rights reserved. |
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4 * |
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5 * This package is an SSL implementation written |
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6 * by Eric Young (eay@cryptsoft.com). |
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7 * The implementation was written so as to conform with Netscapes SSL. |
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8 * |
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9 * This library is free for commercial and non-commercial use as long as |
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10 * the following conditions are aheared to. The following conditions |
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11 * apply to all code found in this distribution, be it the RC4, RSA, |
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12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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13 * included with this distribution is covered by the same copyright terms |
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14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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15 * |
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16 * Copyright remains Eric Young's, and as such any Copyright notices in |
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17 * the code are not to be removed. |
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18 * If this package is used in a product, Eric Young should be given attribution |
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19 * as the author of the parts of the library used. |
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20 * This can be in the form of a textual message at program startup or |
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21 * in documentation (online or textual) provided with the package. |
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22 * |
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23 * Redistribution and use in source and binary forms, with or without |
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24 * modification, are permitted provided that the following conditions |
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25 * are met: |
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26 * 1. Redistributions of source code must retain the copyright |
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27 * notice, this list of conditions and the following disclaimer. |
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28 * 2. Redistributions in binary form must reproduce the above copyright |
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29 * notice, this list of conditions and the following disclaimer in the |
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30 * documentation and/or other materials provided with the distribution. |
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31 * 3. All advertising materials mentioning features or use of this software |
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32 * must display the following acknowledgement: |
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33 * "This product includes cryptographic software written by |
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34 * Eric Young (eay@cryptsoft.com)" |
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35 * The word 'cryptographic' can be left out if the rouines from the library |
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36 * being used are not cryptographic related :-). |
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37 * 4. If you include any Windows specific code (or a derivative thereof) from |
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38 * the apps directory (application code) you must include an acknowledgement: |
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39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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40 * |
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41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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51 * SUCH DAMAGE. |
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52 * |
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53 * The licence and distribution terms for any publically available version or |
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54 * derivative of this code cannot be changed. i.e. this code cannot simply be |
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55 * copied and put under another distribution licence |
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56 * [including the GNU Public Licence.] |
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57 */ |
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58 |
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59 /* |
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60 * The DSS routines are based on patches supplied by |
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61 * Steven Schoch <schoch@sheba.arc.nasa.gov>. He basically did the |
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62 * work and I have just tweaked them a little to fit into my |
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63 * stylistic vision for SSLeay :-) */ |
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64 |
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65 #ifndef HEADER_DSA_H |
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66 #define HEADER_DSA_H |
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67 |
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68 #ifdef OPENSSL_NO_DSA |
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69 #error DSA is disabled. |
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70 #endif |
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71 |
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72 #ifndef OPENSSL_NO_BIO |
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73 #include <openssl/bio.h> |
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74 #endif |
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75 #include <openssl/bn.h> |
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76 #include <openssl/crypto.h> |
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77 #include <openssl/ossl_typ.h> |
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78 #ifndef OPENSSL_NO_DH |
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79 # include <openssl/dh.h> |
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80 #endif |
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81 |
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82 #define DSA_FLAG_CACHE_MONT_P 0x01 |
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83 |
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84 #ifdef __cplusplus |
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85 extern "C" { |
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86 #endif |
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87 |
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88 typedef struct dsa_st DSA; |
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89 |
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90 typedef struct DSA_SIG_st |
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91 { |
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92 BIGNUM *r; |
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93 BIGNUM *s; |
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94 } DSA_SIG; |
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95 |
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96 typedef struct dsa_method { |
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97 const char *name; |
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98 DSA_SIG * (*dsa_do_sign)(const unsigned char *dgst, int dlen, DSA *dsa); |
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99 int (*dsa_sign_setup)(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, |
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100 BIGNUM **rp); |
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101 int (*dsa_do_verify)(const unsigned char *dgst, int dgst_len, |
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102 DSA_SIG *sig, DSA *dsa); |
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103 int (*dsa_mod_exp)(DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1, |
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104 BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx, |
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105 BN_MONT_CTX *in_mont); |
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106 int (*bn_mod_exp)(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p, |
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107 const BIGNUM *m, BN_CTX *ctx, |
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108 BN_MONT_CTX *m_ctx); /* Can be null */ |
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109 int (*init)(DSA *dsa); |
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110 int (*finish)(DSA *dsa); |
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111 int flags; |
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112 char *app_data; |
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113 } DSA_METHOD; |
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114 |
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115 struct dsa_st |
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116 { |
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117 /* This first variable is used to pick up errors where |
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118 * a DSA is passed instead of of a EVP_PKEY */ |
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119 int pad; |
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120 long version; |
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121 int write_params; |
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122 BIGNUM *p; |
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123 BIGNUM *q; /* == 20 */ |
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124 BIGNUM *g; |
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125 |
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126 BIGNUM *pub_key; /* y public key */ |
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127 BIGNUM *priv_key; /* x private key */ |
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128 |
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129 BIGNUM *kinv; /* Signing pre-calc */ |
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130 BIGNUM *r; /* Signing pre-calc */ |
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131 |
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132 int flags; |
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133 /* Normally used to cache montgomery values */ |
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134 char *method_mont_p; |
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135 int references; |
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136 CRYPTO_EX_DATA ex_data; |
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137 const DSA_METHOD *meth; |
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138 /* functional reference if 'meth' is ENGINE-provided */ |
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139 ENGINE *engine; |
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140 }; |
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141 |
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142 #define DSAparams_dup(x) (DSA *)ASN1_dup((int (*)())i2d_DSAparams, \ |
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143 (char *(*)())d2i_DSAparams,(char *)(x)) |
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144 #define d2i_DSAparams_fp(fp,x) (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \ |
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145 (char *(*)())d2i_DSAparams,(fp),(unsigned char **)(x)) |
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146 #define i2d_DSAparams_fp(fp,x) ASN1_i2d_fp(i2d_DSAparams,(fp), \ |
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147 (unsigned char *)(x)) |
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148 #define d2i_DSAparams_bio(bp,x) (DSA *)ASN1_d2i_bio((char *(*)())DSA_new, \ |
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149 (char *(*)())d2i_DSAparams,(bp),(unsigned char **)(x)) |
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150 #define i2d_DSAparams_bio(bp,x) ASN1_i2d_bio(i2d_DSAparams,(bp), \ |
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151 (unsigned char *)(x)) |
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152 |
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153 |
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154 DSA_SIG * DSA_SIG_new(void); |
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155 void DSA_SIG_free(DSA_SIG *a); |
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156 int i2d_DSA_SIG(const DSA_SIG *a, unsigned char **pp); |
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157 DSA_SIG * d2i_DSA_SIG(DSA_SIG **v, const unsigned char **pp, long length); |
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158 |
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159 DSA_SIG * DSA_do_sign(const unsigned char *dgst,int dlen,DSA *dsa); |
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160 int DSA_do_verify(const unsigned char *dgst,int dgst_len, |
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161 DSA_SIG *sig,DSA *dsa); |
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162 |
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163 const DSA_METHOD *DSA_OpenSSL(void); |
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164 |
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165 void DSA_set_default_method(const DSA_METHOD *); |
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166 const DSA_METHOD *DSA_get_default_method(void); |
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167 int DSA_set_method(DSA *dsa, const DSA_METHOD *); |
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168 |
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169 DSA * DSA_new(void); |
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170 DSA * DSA_new_method(ENGINE *engine); |
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171 void DSA_free (DSA *r); |
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172 /* "up" the DSA object's reference count */ |
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173 int DSA_up_ref(DSA *r); |
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174 int DSA_size(const DSA *); |
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175 /* next 4 return -1 on error */ |
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176 int DSA_sign_setup( DSA *dsa,BN_CTX *ctx_in,BIGNUM **kinvp,BIGNUM **rp); |
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177 int DSA_sign(int type,const unsigned char *dgst,int dlen, |
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178 unsigned char *sig, unsigned int *siglen, DSA *dsa); |
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179 int DSA_verify(int type,const unsigned char *dgst,int dgst_len, |
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180 const unsigned char *sigbuf, int siglen, DSA *dsa); |
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181 int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, |
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182 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func); |
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183 int DSA_set_ex_data(DSA *d, int idx, void *arg); |
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184 void *DSA_get_ex_data(DSA *d, int idx); |
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185 |
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186 DSA * d2i_DSAPublicKey(DSA **a, const unsigned char **pp, long length); |
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187 DSA * d2i_DSAPrivateKey(DSA **a, const unsigned char **pp, long length); |
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188 DSA * d2i_DSAparams(DSA **a, const unsigned char **pp, long length); |
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189 DSA * DSA_generate_parameters(int bits, |
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190 unsigned char *seed,int seed_len, |
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191 int *counter_ret, unsigned long *h_ret,void |
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192 (*callback)(int, int, void *),void *cb_arg); |
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193 int DSA_generate_key(DSA *a); |
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194 int i2d_DSAPublicKey(const DSA *a, unsigned char **pp); |
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195 int i2d_DSAPrivateKey(const DSA *a, unsigned char **pp); |
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196 int i2d_DSAparams(const DSA *a,unsigned char **pp); |
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197 |
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198 #ifndef OPENSSL_NO_BIO |
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199 int DSAparams_print(BIO *bp, const DSA *x); |
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200 int DSA_print(BIO *bp, const DSA *x, int off); |
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201 #endif |
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202 #ifndef OPENSSL_NO_FP_API |
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203 int DSAparams_print_fp(FILE *fp, const DSA *x); |
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204 int DSA_print_fp(FILE *bp, const DSA *x, int off); |
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205 #endif |
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206 |
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207 #define DSS_prime_checks 50 |
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208 /* Primality test according to FIPS PUB 186[-1], Appendix 2.1: |
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209 * 50 rounds of Rabin-Miller */ |
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210 #define DSA_is_prime(n, callback, cb_arg) \ |
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211 BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg) |
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212 |
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213 #ifndef OPENSSL_NO_DH |
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214 /* Convert DSA structure (key or just parameters) into DH structure |
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215 * (be careful to avoid small subgroup attacks when using this!) */ |
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216 DH *DSA_dup_DH(const DSA *r); |
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217 #endif |
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218 |
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219 /* BEGIN ERROR CODES */ |
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220 /* The following lines are auto generated by the script mkerr.pl. Any changes |
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221 * made after this point may be overwritten when the script is next run. |
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222 */ |
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223 void ERR_load_DSA_strings(void); |
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224 |
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225 /* Error codes for the DSA functions. */ |
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226 |
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227 /* Function codes. */ |
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228 #define DSA_F_D2I_DSA_SIG 110 |
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229 #define DSA_F_DSAPARAMS_PRINT 100 |
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230 #define DSA_F_DSAPARAMS_PRINT_FP 101 |
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231 #define DSA_F_DSA_DO_SIGN 112 |
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232 #define DSA_F_DSA_DO_VERIFY 113 |
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233 #define DSA_F_DSA_NEW_METHOD 103 |
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234 #define DSA_F_DSA_PRINT 104 |
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235 #define DSA_F_DSA_PRINT_FP 105 |
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236 #define DSA_F_DSA_SIGN 106 |
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237 #define DSA_F_DSA_SIGN_SETUP 107 |
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238 #define DSA_F_DSA_SIG_NEW 109 |
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239 #define DSA_F_DSA_VERIFY 108 |
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240 #define DSA_F_I2D_DSA_SIG 111 |
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241 #define DSA_F_SIG_CB 114 |
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242 |
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243 /* Reason codes. */ |
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244 #define DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 100 |
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245 #define DSA_R_MISSING_PARAMETERS 101 |
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246 |
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247 #ifdef __cplusplus |
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248 } |
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249 #endif |
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250 #endif |
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251 |