include/crypto/asn1.h

   1 /*
   2  * Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef OSSL_CRYPTO_ASN1_H
  11 # define OSSL_CRYPTO_ASN1_H
  12 # pragma once
  13
  14 # include <openssl/asn1.h>
  15
  16 /* Internal ASN1 structures and functions: not for application use */
  17
  18 /* ASN1 public key method structure */
  19
  20 #include <openssl/core.h>
  21
  22 struct evp_pkey_asn1_method_st {
  23     int pkey_id;
  24     int pkey_base_id;
  25     unsigned long pkey_flags;
  26     char *pem_str;
  27     char *info;
  28     int (*pub_decode) (EVP_PKEY *pk, const X509_PUBKEY *pub);
  29     int (*pub_encode) (X509_PUBKEY *pub, const EVP_PKEY *pk);
  30     int (*pub_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
  31     int (*pub_print) (BIO *out, const EVP_PKEY *pkey, int indent,
  32                       ASN1_PCTX *pctx);
  33     int (*priv_decode) (EVP_PKEY *pk, const PKCS8_PRIV_KEY_INFO *p8inf);
  34     int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk);
  35     int (*priv_print) (BIO *out, const EVP_PKEY *pkey, int indent,
  36                        ASN1_PCTX *pctx);
  37     int (*pkey_size) (const EVP_PKEY *pk);
  38     int (*pkey_bits) (const EVP_PKEY *pk);
  39     int (*pkey_security_bits) (const EVP_PKEY *pk);
  40     int (*param_decode) (EVP_PKEY *pkey,
  41                          const unsigned char **pder, int derlen);
  42     int (*param_encode) (const EVP_PKEY *pkey, unsigned char **pder);
  43     int (*param_missing) (const EVP_PKEY *pk);
  44     int (*param_copy) (EVP_PKEY *to, const EVP_PKEY *from);
  45     int (*param_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
  46     int (*param_print) (BIO *out, const EVP_PKEY *pkey, int indent,
  47                         ASN1_PCTX *pctx);
  48     int (*sig_print) (BIO *out,
  49                       const X509_ALGOR *sigalg, const ASN1_STRING *sig,
  50                       int indent, ASN1_PCTX *pctx);
  51     void (*pkey_free) (EVP_PKEY *pkey);
  52     int (*pkey_ctrl) (EVP_PKEY *pkey, int op, long arg1, void *arg2);
  53     /* Legacy functions for old PEM */
  54     int (*old_priv_decode) (EVP_PKEY *pkey,
  55                             const unsigned char **pder, int derlen);
  56     int (*old_priv_encode) (const EVP_PKEY *pkey, unsigned char **pder);
  57     /* Custom ASN1 signature verification */
  58     int (*item_verify) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, const void *data,
  59                         const X509_ALGOR *a, const ASN1_BIT_STRING *sig,
  60                         EVP_PKEY *pkey);
  61     int (*item_sign) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, const void *data,
  62                       X509_ALGOR *alg1, X509_ALGOR *alg2,
  63                       ASN1_BIT_STRING *sig);
  64     int (*siginf_set) (X509_SIG_INFO *siginf, const X509_ALGOR *alg,
  65                        const ASN1_STRING *sig);
  66     /* Check */
  67     int (*pkey_check) (const EVP_PKEY *pk);
  68     int (*pkey_public_check) (const EVP_PKEY *pk);
  69     int (*pkey_param_check) (const EVP_PKEY *pk);
  70     /* Get/set raw private/public key data */
  71     int (*set_priv_key) (EVP_PKEY *pk, const unsigned char *priv, size_t len);
  72     int (*set_pub_key) (EVP_PKEY *pk, const unsigned char *pub, size_t len);
  73     int (*get_priv_key) (const EVP_PKEY *pk, unsigned char *priv, size_t *len);
  74     int (*get_pub_key) (const EVP_PKEY *pk, unsigned char *pub, size_t *len);
  75
  76     /*
  77      * TODO: Make sure these functions are defined for key types that are
  78      * implemented in providers.
  79      */
  80     /* Exports and imports to / from providers */
  81     size_t (*dirty_cnt) (const EVP_PKEY *pk);
  82     int (*export_to) (const EVP_PKEY *pk, void *to_keydata,
  83                       EVP_KEYMGMT *to_keymgmt, OSSL_LIB_CTX *libctx,
  84                       const char *propq);
  85     OSSL_CALLBACK *import_from;
  86     int (*copy) (EVP_PKEY *to, EVP_PKEY *from);
  87
  88     int (*priv_decode_ex) (EVP_PKEY *pk,
  89                                     const PKCS8_PRIV_KEY_INFO *p8inf,
  90                                     OSSL_LIB_CTX *libctx,
  91                                     const char *propq);
  92 } /* EVP_PKEY_ASN1_METHOD */ ;
  93
  94 DEFINE_STACK_OF_CONST(EVP_PKEY_ASN1_METHOD)
  95
  96 extern const EVP_PKEY_ASN1_METHOD ossl_dh_asn1_meth;
  97 extern const EVP_PKEY_ASN1_METHOD ossl_dhx_asn1_meth;
  98 extern const EVP_PKEY_ASN1_METHOD ossl_dsa_asn1_meths[5];
  99 extern const EVP_PKEY_ASN1_METHOD ossl_eckey_asn1_meth;
 100 extern const EVP_PKEY_ASN1_METHOD ossl_ecx25519_asn1_meth;
 101 extern const EVP_PKEY_ASN1_METHOD ossl_ecx448_asn1_meth;
 102 extern const EVP_PKEY_ASN1_METHOD ossl_ed25519_asn1_meth;
 103 extern const EVP_PKEY_ASN1_METHOD ossl_ed448_asn1_meth;
 104 extern const EVP_PKEY_ASN1_METHOD ossl_sm2_asn1_meth;
 105
 106 extern const EVP_PKEY_ASN1_METHOD ossl_rsa_asn1_meths[2];
 107 extern const EVP_PKEY_ASN1_METHOD ossl_rsa_pss_asn1_meth;
 108
 109 /*
 110  * These are used internally in the ASN1_OBJECT to keep track of whether the
 111  * names and data need to be free()ed
 112  */
 113 # define ASN1_OBJECT_FLAG_DYNAMIC         0x01/* internal use */
 114 # define ASN1_OBJECT_FLAG_CRITICAL        0x02/* critical x509v3 object id */
 115 # define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04/* internal use */
 116 # define ASN1_OBJECT_FLAG_DYNAMIC_DATA    0x08/* internal use */
 117 struct asn1_object_st {
 118     const char *sn, *ln;
 119     int nid;
 120     int length;
 121     const unsigned char *data;  /* data remains const after init */
 122     int flags;                  /* Should we free this one */
 123 };
 124
 125 /* ASN1 print context structure */
 126
 127 struct asn1_pctx_st {
 128     unsigned long flags;
 129     unsigned long nm_flags;
 130     unsigned long cert_flags;
 131     unsigned long oid_flags;
 132     unsigned long str_flags;
 133 } /* ASN1_PCTX */ ;
 134
 135 /* ASN1 type functions */
 136
 137 int ossl_asn1_type_set_octetstring_int(ASN1_TYPE *a, long num,
 138                                        unsigned char *data, int len);
 139 int ossl_asn1_type_get_octetstring_int(const ASN1_TYPE *a, long *num,
 140                                        unsigned char *data, int max_len);
 141
 142 int ossl_x509_algor_new_from_md(X509_ALGOR **palg, const EVP_MD *md);
 143 const EVP_MD *ossl_x509_algor_get_md(X509_ALGOR *alg);
 144 X509_ALGOR *ossl_x509_algor_mgf1_decode(X509_ALGOR *alg);
 145 int ossl_x509_algor_md_to_mgf1(X509_ALGOR **palg, const EVP_MD *mgf1md);
 146 int ossl_asn1_time_print_ex(BIO *bp, const ASN1_TIME *tm);
 147
 148 #endif /* ndef OSSL_CRYPTO_ASN1_H */