1/*
2 * Copyright 2015-2018 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/* Internal ASN1 structures and functions: not for application use */
11
12/* ASN1 public key method structure */
13
14struct evp_pkey_asn1_method_st {
15 int pkey_id;
16 int pkey_base_id;
17 unsigned long pkey_flags;
18 char *pem_str;
19 char *info;
20 int (*pub_decode) (EVP_PKEY *pk, X509_PUBKEY *pub);
21 int (*pub_encode) (X509_PUBKEY *pub, const EVP_PKEY *pk);
22 int (*pub_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
23 int (*pub_print) (BIO *out, const EVP_PKEY *pkey, int indent,
24 ASN1_PCTX *pctx);
25 int (*priv_decode) (EVP_PKEY *pk, const PKCS8_PRIV_KEY_INFO *p8inf);
26 int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk);
27 int (*priv_print) (BIO *out, const EVP_PKEY *pkey, int indent,
28 ASN1_PCTX *pctx);
29 int (*pkey_size) (const EVP_PKEY *pk);
30 int (*pkey_bits) (const EVP_PKEY *pk);
31 int (*pkey_security_bits) (const EVP_PKEY *pk);
32 int (*param_decode) (EVP_PKEY *pkey,
33 const unsigned char **pder, int derlen);
34 int (*param_encode) (const EVP_PKEY *pkey, unsigned char **pder);
35 int (*param_missing) (const EVP_PKEY *pk);
36 int (*param_copy) (EVP_PKEY *to, const EVP_PKEY *from);
37 int (*param_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
38 int (*param_print) (BIO *out, const EVP_PKEY *pkey, int indent,
39 ASN1_PCTX *pctx);
40 int (*sig_print) (BIO *out,
41 const X509_ALGOR *sigalg, const ASN1_STRING *sig,
42 int indent, ASN1_PCTX *pctx);
43 void (*pkey_free) (EVP_PKEY *pkey);
44 int (*pkey_ctrl) (EVP_PKEY *pkey, int op, long arg1, void *arg2);
45 /* Legacy functions for old PEM */
46 int (*old_priv_decode) (EVP_PKEY *pkey,
47 const unsigned char **pder, int derlen);
48 int (*old_priv_encode) (const EVP_PKEY *pkey, unsigned char **pder);
49 /* Custom ASN1 signature verification */
50 int (*item_verify) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
51 X509_ALGOR *a, ASN1_BIT_STRING *sig, EVP_PKEY *pkey);
52 int (*item_sign) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
53 X509_ALGOR *alg1, X509_ALGOR *alg2,
54 ASN1_BIT_STRING *sig);
55 int (*siginf_set) (X509_SIG_INFO *siginf, const X509_ALGOR *alg,
56 const ASN1_STRING *sig);
57 /* Check */
58 int (*pkey_check) (const EVP_PKEY *pk);
59 int (*pkey_public_check) (const EVP_PKEY *pk);
60 int (*pkey_param_check) (const EVP_PKEY *pk);
61 /* Get/set raw private/public key data */
62 int (*set_priv_key) (EVP_PKEY *pk, const unsigned char *priv, size_t len);
63 int (*set_pub_key) (EVP_PKEY *pk, const unsigned char *pub, size_t len);
64 int (*get_priv_key) (const EVP_PKEY *pk, unsigned char *priv, size_t *len);
65 int (*get_pub_key) (const EVP_PKEY *pk, unsigned char *pub, size_t *len);
66
67 /*
68 * TODO: Make sure these functions are defined for key types that are
69 * implemented in providers.
70 */
71 /* Exports to providers */
72 size_t (*dirty_cnt) (const EVP_PKEY *pk);
73 void *(*export_to) (const EVP_PKEY *pk, EVP_KEYMGMT *keymgmt,
74 int want_domainparams);
75} /* EVP_PKEY_ASN1_METHOD */ ;
76
77DEFINE_STACK_OF_CONST(EVP_PKEY_ASN1_METHOD)
78
79extern const EVP_PKEY_ASN1_METHOD cmac_asn1_meth;
80extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
81extern const EVP_PKEY_ASN1_METHOD dhx_asn1_meth;
82extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[5];
83extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
84extern const EVP_PKEY_ASN1_METHOD ecx25519_asn1_meth;
85extern const EVP_PKEY_ASN1_METHOD ecx448_asn1_meth;
86extern const EVP_PKEY_ASN1_METHOD ed25519_asn1_meth;
87extern const EVP_PKEY_ASN1_METHOD ed448_asn1_meth;
88extern const EVP_PKEY_ASN1_METHOD sm2_asn1_meth;
89extern const EVP_PKEY_ASN1_METHOD poly1305_asn1_meth;
90
91extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
92extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[2];
93extern const EVP_PKEY_ASN1_METHOD rsa_pss_asn1_meth;
94extern const EVP_PKEY_ASN1_METHOD siphash_asn1_meth;
95
96/*
97 * These are used internally in the ASN1_OBJECT to keep track of whether the
98 * names and data need to be free()ed
99 */
100# define ASN1_OBJECT_FLAG_DYNAMIC 0x01/* internal use */
101# define ASN1_OBJECT_FLAG_CRITICAL 0x02/* critical x509v3 object id */
102# define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04/* internal use */
103# define ASN1_OBJECT_FLAG_DYNAMIC_DATA 0x08/* internal use */
104struct asn1_object_st {
105 const char *sn, *ln;
106 int nid;
107 int length;
108 const unsigned char *data; /* data remains const after init */
109 int flags; /* Should we free this one */
110};
111
112/* ASN1 print context structure */
113
114struct asn1_pctx_st {
115 unsigned long flags;
116 unsigned long nm_flags;
117 unsigned long cert_flags;
118 unsigned long oid_flags;
119 unsigned long str_flags;
120} /* ASN1_PCTX */ ;
121
122int asn1_d2i_read_bio(BIO *in, BUF_MEM **pb);
123