1 | /*
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2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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3 | *
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4 | * Licensed under the OpenSSL license (the "License"). You may not use
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5 | * this file except in compliance with the License. You can obtain a copy
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6 | * in the file LICENSE in the source distribution or at
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7 | * https://www.openssl.org/source/license.html
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8 | */
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9 |
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10 | /*
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11 | * The DSS routines are based on patches supplied by
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12 | * Steven Schoch <schoch@sheba.arc.nasa.gov>.
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13 | */
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14 |
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15 | #ifndef HEADER_DSA_H
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16 | # define HEADER_DSA_H
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17 |
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18 | # include <openssl/opensslconf.h>
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19 |
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20 | # ifndef OPENSSL_NO_DSA
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21 | # ifdef __cplusplus
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22 | extern "C" {
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23 | # endif
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24 | # include <openssl/e_os2.h>
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25 | # include <openssl/bio.h>
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26 | # include <openssl/crypto.h>
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27 | # include <openssl/ossl_typ.h>
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28 | # include <openssl/opensslconf.h>
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29 | # include <openssl/bn.h>
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30 | # if OPENSSL_API_COMPAT < 0x10100000L
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31 | # include <openssl/dh.h>
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32 | # endif
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33 |
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34 | # ifndef OPENSSL_DSA_MAX_MODULUS_BITS
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35 | # define OPENSSL_DSA_MAX_MODULUS_BITS 10000
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36 | # endif
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37 |
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38 | # define OPENSSL_DSA_FIPS_MIN_MODULUS_BITS 1024
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39 |
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40 | # define DSA_FLAG_CACHE_MONT_P 0x01
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41 | # if OPENSSL_API_COMPAT < 0x10100000L
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42 | /*
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43 | * Does nothing. Previously this switched off constant time behaviour.
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44 | */
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45 | # define DSA_FLAG_NO_EXP_CONSTTIME 0x00
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46 | # endif
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47 |
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48 | /*
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49 | * If this flag is set the DSA method is FIPS compliant and can be used in
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50 | * FIPS mode. This is set in the validated module method. If an application
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51 | * sets this flag in its own methods it is its responsibility to ensure the
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52 | * result is compliant.
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53 | */
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54 |
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55 | # define DSA_FLAG_FIPS_METHOD 0x0400
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56 |
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57 | /*
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58 | * If this flag is set the operations normally disabled in FIPS mode are
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59 | * permitted it is then the applications responsibility to ensure that the
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60 | * usage is compliant.
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61 | */
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62 |
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63 | # define DSA_FLAG_NON_FIPS_ALLOW 0x0400
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64 | # define DSA_FLAG_FIPS_CHECKED 0x0800
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65 |
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66 | /* Already defined in ossl_typ.h */
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67 | /* typedef struct dsa_st DSA; */
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68 | /* typedef struct dsa_method DSA_METHOD; */
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69 |
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70 | typedef struct DSA_SIG_st DSA_SIG;
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71 |
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72 | # define d2i_DSAparams_fp(fp,x) (DSA *)ASN1_d2i_fp((char *(*)())DSA_new, \
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73 | (char *(*)())d2i_DSAparams,(fp),(unsigned char **)(x))
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74 | # define i2d_DSAparams_fp(fp,x) ASN1_i2d_fp(i2d_DSAparams,(fp), \
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75 | (unsigned char *)(x))
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76 | # define d2i_DSAparams_bio(bp,x) ASN1_d2i_bio_of(DSA,DSA_new,d2i_DSAparams,bp,x)
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77 | # define i2d_DSAparams_bio(bp,x) ASN1_i2d_bio_of_const(DSA,i2d_DSAparams,bp,x)
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78 |
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79 | DSA *DSAparams_dup(DSA *x);
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80 | DSA_SIG *DSA_SIG_new(void);
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81 | void DSA_SIG_free(DSA_SIG *a);
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82 | int i2d_DSA_SIG(const DSA_SIG *a, unsigned char **pp);
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83 | DSA_SIG *d2i_DSA_SIG(DSA_SIG **v, const unsigned char **pp, long length);
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84 | void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
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85 | int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s);
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86 |
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87 | DSA_SIG *DSA_do_sign(const unsigned char *dgst, int dlen, DSA *dsa);
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88 | int DSA_do_verify(const unsigned char *dgst, int dgst_len,
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89 | DSA_SIG *sig, DSA *dsa);
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90 |
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91 | const DSA_METHOD *DSA_OpenSSL(void);
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92 |
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93 | void DSA_set_default_method(const DSA_METHOD *);
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94 | const DSA_METHOD *DSA_get_default_method(void);
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95 | int DSA_set_method(DSA *dsa, const DSA_METHOD *);
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96 | const DSA_METHOD *DSA_get_method(DSA *d);
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97 |
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98 | DSA *DSA_new(void);
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99 | DSA *DSA_new_method(ENGINE *engine);
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100 | void DSA_free(DSA *r);
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101 | /* "up" the DSA object's reference count */
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102 | int DSA_up_ref(DSA *r);
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103 | int DSA_size(const DSA *);
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104 | int DSA_bits(const DSA *d);
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105 | int DSA_security_bits(const DSA *d);
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106 | /* next 4 return -1 on error */
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107 | int DSA_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp);
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108 | int DSA_sign(int type, const unsigned char *dgst, int dlen,
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109 | unsigned char *sig, unsigned int *siglen, DSA *dsa);
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110 | int DSA_verify(int type, const unsigned char *dgst, int dgst_len,
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111 | const unsigned char *sigbuf, int siglen, DSA *dsa);
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112 | #define DSA_get_ex_new_index(l, p, newf, dupf, freef) \
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113 | CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DSA, l, p, newf, dupf, freef)
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114 | int DSA_set_ex_data(DSA *d, int idx, void *arg);
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115 | void *DSA_get_ex_data(DSA *d, int idx);
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116 |
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117 | DSA *d2i_DSAPublicKey(DSA **a, const unsigned char **pp, long length);
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118 | DSA *d2i_DSAPrivateKey(DSA **a, const unsigned char **pp, long length);
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119 | DSA *d2i_DSAparams(DSA **a, const unsigned char **pp, long length);
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120 |
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121 | /* Deprecated version */
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122 | DEPRECATEDIN_0_9_8(DSA *DSA_generate_parameters(int bits,
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123 | unsigned char *seed,
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124 | int seed_len,
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125 | int *counter_ret,
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126 | unsigned long *h_ret, void
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127 | (*callback) (int, int,
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128 | void *),
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129 | void *cb_arg))
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130 |
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131 | /* New version */
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132 | int DSA_generate_parameters_ex(DSA *dsa, int bits,
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133 | const unsigned char *seed, int seed_len,
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134 | int *counter_ret, unsigned long *h_ret,
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135 | BN_GENCB *cb);
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136 |
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137 | int DSA_generate_key(DSA *a);
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138 | int i2d_DSAPublicKey(const DSA *a, unsigned char **pp);
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139 | int i2d_DSAPrivateKey(const DSA *a, unsigned char **pp);
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140 | int i2d_DSAparams(const DSA *a, unsigned char **pp);
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141 |
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142 | int DSAparams_print(BIO *bp, const DSA *x);
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143 | int DSA_print(BIO *bp, const DSA *x, int off);
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144 | # ifndef OPENSSL_NO_STDIO
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145 | int DSAparams_print_fp(FILE *fp, const DSA *x);
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146 | int DSA_print_fp(FILE *bp, const DSA *x, int off);
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147 | # endif
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148 |
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149 | # define DSS_prime_checks 50
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150 | /*
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151 | * Primality test according to FIPS PUB 186[-1], Appendix 2.1: 50 rounds of
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152 | * Rabin-Miller
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153 | */
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154 | # define DSA_is_prime(n, callback, cb_arg) \
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155 | BN_is_prime(n, DSS_prime_checks, callback, NULL, cb_arg)
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156 |
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157 | # ifndef OPENSSL_NO_DH
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158 | /*
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159 | * Convert DSA structure (key or just parameters) into DH structure (be
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160 | * careful to avoid small subgroup attacks when using this!)
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161 | */
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162 | DH *DSA_dup_DH(const DSA *r);
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163 | # endif
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164 |
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165 | # define EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, nbits) \
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166 | EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DSA, EVP_PKEY_OP_PARAMGEN, \
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167 | EVP_PKEY_CTRL_DSA_PARAMGEN_BITS, nbits, NULL)
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168 |
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169 | # define EVP_PKEY_CTRL_DSA_PARAMGEN_BITS (EVP_PKEY_ALG_CTRL + 1)
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170 | # define EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS (EVP_PKEY_ALG_CTRL + 2)
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171 | # define EVP_PKEY_CTRL_DSA_PARAMGEN_MD (EVP_PKEY_ALG_CTRL + 3)
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172 |
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173 | void DSA_get0_pqg(const DSA *d,
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174 | const BIGNUM **p, const BIGNUM **q, const BIGNUM **g);
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175 | int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g);
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176 | void DSA_get0_key(const DSA *d,
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177 | const BIGNUM **pub_key, const BIGNUM **priv_key);
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178 | int DSA_set0_key(DSA *d, BIGNUM *pub_key, BIGNUM *priv_key);
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179 | void DSA_clear_flags(DSA *d, int flags);
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180 | int DSA_test_flags(const DSA *d, int flags);
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181 | void DSA_set_flags(DSA *d, int flags);
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182 | ENGINE *DSA_get0_engine(DSA *d);
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183 |
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184 | DSA_METHOD *DSA_meth_new(const char *name, int flags);
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185 | void DSA_meth_free(DSA_METHOD *dsam);
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186 | DSA_METHOD *DSA_meth_dup(const DSA_METHOD *dsam);
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187 | const char *DSA_meth_get0_name(const DSA_METHOD *dsam);
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188 | int DSA_meth_set1_name(DSA_METHOD *dsam, const char *name);
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189 | int DSA_meth_get_flags(DSA_METHOD *dsam);
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190 | int DSA_meth_set_flags(DSA_METHOD *dsam, int flags);
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191 | void *DSA_meth_get0_app_data(const DSA_METHOD *dsam);
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192 | int DSA_meth_set0_app_data(DSA_METHOD *dsam, void *app_data);
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193 | DSA_SIG *(*DSA_meth_get_sign(const DSA_METHOD *dsam))
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194 | (const unsigned char *, int, DSA *);
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195 | int DSA_meth_set_sign(DSA_METHOD *dsam,
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196 | DSA_SIG *(*sign) (const unsigned char *, int, DSA *));
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197 | int (*DSA_meth_get_sign_setup(const DSA_METHOD *dsam))
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198 | (DSA *, BN_CTX *, BIGNUM **, BIGNUM **);
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199 | int DSA_meth_set_sign_setup(DSA_METHOD *dsam,
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200 | int (*sign_setup) (DSA *, BN_CTX *, BIGNUM **, BIGNUM **));
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201 | int (*DSA_meth_get_verify(const DSA_METHOD *dsam))
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202 | (const unsigned char *, int , DSA_SIG *, DSA *);
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203 | int DSA_meth_set_verify(DSA_METHOD *dsam,
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204 | int (*verify) (const unsigned char *, int, DSA_SIG *, DSA *));
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205 | int (*DSA_meth_get_mod_exp(const DSA_METHOD *dsam))
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206 | (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
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207 | const BIGNUM *, const BIGNUM *, BN_CTX *, BN_MONT_CTX *);
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208 | int DSA_meth_set_mod_exp(DSA_METHOD *dsam,
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209 | int (*mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
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210 | const BIGNUM *, const BIGNUM *, const BIGNUM *, BN_CTX *,
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211 | BN_MONT_CTX *));
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212 | int (*DSA_meth_get_bn_mod_exp(const DSA_METHOD *dsam))
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213 | (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *, const BIGNUM *,
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214 | BN_CTX *, BN_MONT_CTX *);
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215 | int DSA_meth_set_bn_mod_exp(DSA_METHOD *dsam,
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216 | int (*bn_mod_exp) (DSA *, BIGNUM *, const BIGNUM *, const BIGNUM *,
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217 | const BIGNUM *, BN_CTX *, BN_MONT_CTX *));
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218 | int (*DSA_meth_get_init(const DSA_METHOD *dsam))(DSA *);
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219 | int DSA_meth_set_init(DSA_METHOD *dsam, int (*init)(DSA *));
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220 | int (*DSA_meth_get_finish(const DSA_METHOD *dsam)) (DSA *);
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221 | int DSA_meth_set_finish(DSA_METHOD *dsam, int (*finish) (DSA *));
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222 | int (*DSA_meth_get_paramgen(const DSA_METHOD *dsam))
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223 | (DSA *, int, const unsigned char *, int, int *, unsigned long *,
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224 | BN_GENCB *);
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225 | int DSA_meth_set_paramgen(DSA_METHOD *dsam,
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226 | int (*paramgen) (DSA *, int, const unsigned char *, int, int *,
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227 | unsigned long *, BN_GENCB *));
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228 | int (*DSA_meth_get_keygen(const DSA_METHOD *dsam)) (DSA *);
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229 | int DSA_meth_set_keygen(DSA_METHOD *dsam, int (*keygen) (DSA *));
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230 |
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231 | /* BEGIN ERROR CODES */
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232 | /*
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233 | * The following lines are auto generated by the script mkerr.pl. Any changes
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234 | * made after this point may be overwritten when the script is next run.
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235 | */
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236 |
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237 | int ERR_load_DSA_strings(void);
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238 |
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239 | /* Error codes for the DSA functions. */
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240 |
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241 | /* Function codes. */
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242 | # define DSA_F_DSAPARAMS_PRINT 100
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243 | # define DSA_F_DSAPARAMS_PRINT_FP 101
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244 | # define DSA_F_DSA_BUILTIN_PARAMGEN 125
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245 | # define DSA_F_DSA_BUILTIN_PARAMGEN2 126
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246 | # define DSA_F_DSA_DO_SIGN 112
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247 | # define DSA_F_DSA_DO_VERIFY 113
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248 | # define DSA_F_DSA_METH_DUP 127
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249 | # define DSA_F_DSA_METH_NEW 128
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250 | # define DSA_F_DSA_METH_SET1_NAME 129
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251 | # define DSA_F_DSA_NEW_METHOD 103
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252 | # define DSA_F_DSA_PARAM_DECODE 119
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253 | # define DSA_F_DSA_PRINT_FP 105
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254 | # define DSA_F_DSA_PRIV_DECODE 115
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255 | # define DSA_F_DSA_PRIV_ENCODE 116
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256 | # define DSA_F_DSA_PUB_DECODE 117
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257 | # define DSA_F_DSA_PUB_ENCODE 118
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258 | # define DSA_F_DSA_SIGN 106
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259 | # define DSA_F_DSA_SIGN_SETUP 107
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260 | # define DSA_F_DSA_SIG_NEW 102
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261 | # define DSA_F_OLD_DSA_PRIV_DECODE 122
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262 | # define DSA_F_PKEY_DSA_CTRL 120
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263 | # define DSA_F_PKEY_DSA_KEYGEN 121
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264 |
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265 | /* Reason codes. */
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266 | # define DSA_R_BAD_Q_VALUE 102
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267 | # define DSA_R_BN_DECODE_ERROR 108
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268 | # define DSA_R_BN_ERROR 109
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269 | # define DSA_R_DECODE_ERROR 104
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270 | # define DSA_R_INVALID_DIGEST_TYPE 106
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271 | # define DSA_R_INVALID_PARAMETERS 112
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272 | # define DSA_R_MISSING_PARAMETERS 101
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273 | # define DSA_R_MODULUS_TOO_LARGE 103
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274 | # define DSA_R_NO_PARAMETERS_SET 107
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275 | # define DSA_R_PARAMETER_ENCODING_ERROR 105
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276 | # define DSA_R_Q_NOT_PRIME 113
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277 | # define DSA_R_SEED_LEN_SMALL 110
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278 |
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279 | # ifdef __cplusplus
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280 | }
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281 | # endif
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282 | # endif
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283 | #endif
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