/* asn1_int.h */
/*
 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
 * 2015.
 */
/* ====================================================================
 * Copyright (c) 2015 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
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 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

/* Internal ASN1 structures and functions: not for application use */

/* ASN1 public key method structure */

struct evp_pkey_asn1_method_st {
    int pkey_id;
    int pkey_base_id;
    unsigned long pkey_flags;
    char *pem_str;
    char *info;
    int (*pub_decode) (EVP_PKEY *pk, X509_PUBKEY *pub);
    int (*pub_encode) (X509_PUBKEY *pub, const EVP_PKEY *pk);
    int (*pub_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
    int (*pub_print) (BIO *out, const EVP_PKEY *pkey, int indent,
                      ASN1_PCTX *pctx);
    int (*priv_decode) (EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf);
    int (*priv_encode) (PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk);
    int (*priv_print) (BIO *out, const EVP_PKEY *pkey, int indent,
                       ASN1_PCTX *pctx);
    int (*pkey_size) (const EVP_PKEY *pk);
    int (*pkey_bits) (const EVP_PKEY *pk);
    int (*pkey_security_bits) (const EVP_PKEY *pk);
    int (*param_decode) (EVP_PKEY *pkey,
                         const unsigned char **pder, int derlen);
    int (*param_encode) (const EVP_PKEY *pkey, unsigned char **pder);
    int (*param_missing) (const EVP_PKEY *pk);
    int (*param_copy) (EVP_PKEY *to, const EVP_PKEY *from);
    int (*param_cmp) (const EVP_PKEY *a, const EVP_PKEY *b);
    int (*param_print) (BIO *out, const EVP_PKEY *pkey, int indent,
                        ASN1_PCTX *pctx);
    int (*sig_print) (BIO *out,
                      const X509_ALGOR *sigalg, const ASN1_STRING *sig,
                      int indent, ASN1_PCTX *pctx);
    void (*pkey_free) (EVP_PKEY *pkey);
    int (*pkey_ctrl) (EVP_PKEY *pkey, int op, long arg1, void *arg2);
    /* Legacy functions for old PEM */
    int (*old_priv_decode) (EVP_PKEY *pkey,
                            const unsigned char **pder, int derlen);
    int (*old_priv_encode) (const EVP_PKEY *pkey, unsigned char **pder);
    /* Custom ASN1 signature verification */
    int (*item_verify) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
                        X509_ALGOR *a, ASN1_BIT_STRING *sig, EVP_PKEY *pkey);
    int (*item_sign) (EVP_MD_CTX *ctx, const ASN1_ITEM *it, void *asn,
                      X509_ALGOR *alg1, X509_ALGOR *alg2,
                      ASN1_BIT_STRING *sig);
} /* EVP_PKEY_ASN1_METHOD */ ;

extern const EVP_PKEY_ASN1_METHOD cmac_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD dhx_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[];
extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[];

/*
 * These are used internally in the ASN1_OBJECT to keep track of whether the
 * names and data need to be free()ed
 */
# define ASN1_OBJECT_FLAG_DYNAMIC         0x01/* internal use */
# define ASN1_OBJECT_FLAG_CRITICAL        0x02/* critical x509v3 object id */
# define ASN1_OBJECT_FLAG_DYNAMIC_STRINGS 0x04/* internal use */
# define ASN1_OBJECT_FLAG_DYNAMIC_DATA    0x08/* internal use */
struct asn1_object_st {
    const char *sn, *ln;
    int nid;
    int length;
    const unsigned char *data;  /* data remains const after init */
    int flags;                  /* Should we free this one */
};

/* ASN1 print context structure */

struct asn1_pctx_st {
    unsigned long flags;
    unsigned long nm_flags;
    unsigned long cert_flags;
    unsigned long oid_flags;
    unsigned long str_flags;
} /* ASN1_PCTX */ ;