[331] | 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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