asn1_locl.h

Go to the documentation of this file.

/* asn1t.h */
/* Written by Dr Stephen N Henson ([email protected]) for the OpenSSL
 * project 2006.
 */
/* ====================================================================
 * Copyright (c) 2006 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. 
 *
 * 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
 *    [email protected].
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 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
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * ([email protected]).  This product includes software written by Tim
 * Hudson ([email protected]).
 *
 */

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

/* 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 */;

/* 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 (*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 */;

/* Method to handle CRL access.
 * In general a CRL could be very large (several Mb) and can consume large
 * amounts of resources if stored in memory by multiple processes.
 * This method allows general CRL operations to be redirected to more
 * efficient callbacks: for example a CRL entry database.
 */

#define X509_CRL_METHOD_DYNAMIC     1

struct x509_crl_method_st
    {
    int flags;
    int (*crl_init)(X509_CRL *crl);
    int (*crl_free)(X509_CRL *crl);
    int (*crl_lookup)(X509_CRL *crl, X509_REVOKED **ret,
                ASN1_INTEGER *ser, X509_NAME *issuer);
    int (*crl_verify)(X509_CRL *crl, EVP_PKEY *pk);
    };