2 * Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
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
10 #include <openssl/asn1.h>
12 /* Internal ASN1 structures and functions: not for application use */
14 /* ASN1 public key method structure */
16 #include <openssl/core.h>
18 struct evp_pkey_asn1_method_st {
21 unsigned long pkey_flags;
24 int (*pub_decode) (EVP_PKEY *pk, const X509_PUBKEY *pub);
25 int (*pub_encode) (X509_PUBKEY *pub, const EVP_PKEY *pk);
26 int (*pub_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
27 int (*pub_print) (BIO *out, const EVP_PKEY *pkey, int indent,
29 int (*priv_decode) (EVP_PKEY *pk, const PKCS8_PRIV_KEY_INFO *p8inf);
30 int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk);
31 int (*priv_print) (BIO *out, const EVP_PKEY *pkey, int indent,
33 int (*pkey_size) (const EVP_PKEY *pk);
34 int (*pkey_bits) (const EVP_PKEY *pk);
35 int (*pkey_security_bits) (const EVP_PKEY *pk);
36 int (*param_decode) (EVP_PKEY *pkey,
37 const unsigned char **pder, int derlen);
38 int (*param_encode) (const EVP_PKEY *pkey, unsigned char **pder);
39 int (*param_missing) (const EVP_PKEY *pk);
40 int (*param_copy) (EVP_PKEY *to, const EVP_PKEY *from);
41 int (*param_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
42 int (*param_print) (BIO *out, const EVP_PKEY *pkey, int indent,
44 int (*sig_print) (BIO *out,
45 const X509_ALGOR *sigalg, const ASN1_STRING *sig,
46 int indent, ASN1_PCTX *pctx);
47 void (*pkey_free) (EVP_PKEY *pkey);
48 int (*pkey_ctrl) (EVP_PKEY *pkey, int op, long arg1, void *arg2);
49 /* Legacy functions for old PEM */
50 int (*old_priv_decode) (EVP_PKEY *pkey,
51 const unsigned char **pder, int derlen);
52 int (*old_priv_encode) (const EVP_PKEY *pkey, unsigned char **pder);
53 /* Custom ASN1 signature verification */
54 int (*item_verify) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, const void *data,
55 const X509_ALGOR *a, const ASN1_BIT_STRING *sig,
57 int (*item_sign) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, const void *data,
58 X509_ALGOR *alg1, X509_ALGOR *alg2,
59 ASN1_BIT_STRING *sig);
60 int (*siginf_set) (X509_SIG_INFO *siginf, const X509_ALGOR *alg,
61 const ASN1_STRING *sig);
63 int (*pkey_check) (const EVP_PKEY *pk);
64 int (*pkey_public_check) (const EVP_PKEY *pk);
65 int (*pkey_param_check) (const EVP_PKEY *pk);
66 /* Get/set raw private/public key data */
67 int (*set_priv_key) (EVP_PKEY *pk, const unsigned char *priv, size_t len);
68 int (*set_pub_key) (EVP_PKEY *pk, const unsigned char *pub, size_t len);
69 int (*get_priv_key) (const EVP_PKEY *pk, unsigned char *priv, size_t *len);
70 int (*get_pub_key) (const EVP_PKEY *pk, unsigned char *pub, size_t *len);
73 * TODO: Make sure these functions are defined for key types that are
74 * implemented in providers.
76 /* Exports and imports to / from providers */
77 size_t (*dirty_cnt) (const EVP_PKEY *pk);
78 int (*export_to) (const EVP_PKEY *pk, void *to_keydata,
79 EVP_KEYMGMT *to_keymgmt, OPENSSL_CTX *libctx,
81 OSSL_CALLBACK *import_from;
83 int (*priv_decode_ex) (EVP_PKEY *pk,
84 const PKCS8_PRIV_KEY_INFO *p8inf,
87 } /* EVP_PKEY_ASN1_METHOD */ ;
89 DEFINE_STACK_OF_CONST(EVP_PKEY_ASN1_METHOD)
91 extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
92 extern const EVP_PKEY_ASN1_METHOD dhx_asn1_meth;
93 extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[5];
94 extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
95 extern const EVP_PKEY_ASN1_METHOD ecx25519_asn1_meth;
96 extern const EVP_PKEY_ASN1_METHOD ecx448_asn1_meth;
97 extern const EVP_PKEY_ASN1_METHOD ed25519_asn1_meth;
98 extern const EVP_PKEY_ASN1_METHOD ed448_asn1_meth;
99 extern const EVP_PKEY_ASN1_METHOD sm2_asn1_meth;
101 extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[2];
102 extern const EVP_PKEY_ASN1_METHOD rsa_pss_asn1_meth;
105 * These are used internally in the ASN1_OBJECT to keep track of whether the
106 * names and data need to be free()ed
108 # define ASN1_OBJECT_FLAG_DYNAMIC 0x01/* internal use */
109 # define ASN1_OBJECT_FLAG_CRITICAL 0x02/* critical x509v3 object id */
110 # define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04/* internal use */
111 # define ASN1_OBJECT_FLAG_DYNAMIC_DATA 0x08/* internal use */
112 struct asn1_object_st {
116 const unsigned char *data; /* data remains const after init */
117 int flags; /* Should we free this one */
120 /* ASN1 print context structure */
122 struct asn1_pctx_st {
124 unsigned long nm_flags;
125 unsigned long cert_flags;
126 unsigned long oid_flags;
127 unsigned long str_flags;
130 /* ASN1 type functions */
132 int asn1_type_set_octetstring_int(ASN1_TYPE *a, long num,
133 unsigned char *data, int len);
134 int asn1_type_get_octetstring_int(const ASN1_TYPE *a, long *num,
135 unsigned char *data, int max_len);