path: root/lib/x509/x509_int.h

/*
 * Copyright (C) 2003, 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc.
 *
 * Author: Nikos Mavrogiannopoulos
 *
 * This file is part of GNUTLS.
 *
 * The GNUTLS library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 * USA
 *
 */

#ifndef X509_H
# define X509_H

#include <gnutls/x509.h>

#include <libtasn1.h>

/* Remove these when we require libtasn1 v1.6 or later. */
#ifndef ASN1_MAX_NAME_SIZE
# define ASN1_MAX_NAME_SIZE MAX_NAME_SIZE
#endif
#ifndef ASN1_MAX_ERROR_DESCRIPTION_SIZE
# define ASN1_MAX_ERROR_DESCRIPTION_SIZE MAX_ERROR_DESCRIPTION_SIZE
#endif

#define MAX_CRQ_EXTENSIONS_SIZE 8*1024
#define MAX_OID_SIZE 128

#define HASH_OID_SHA1 "1.3.14.3.2.26"
#define HASH_OID_MD5 "1.2.840.113549.2.5"
#define HASH_OID_MD2 "1.2.840.113549.2.2"
#define HASH_OID_RMD160 "1.3.36.3.2.1"
#define HASH_OID_SHA256 "2.16.840.1.101.3.4.2.1"
#define HASH_OID_SHA384 "2.16.840.1.101.3.4.2.2"
#define HASH_OID_SHA512 "2.16.840.1.101.3.4.2.3"

typedef struct gnutls_x509_crl_int
{
  ASN1_TYPE crl;
  int use_extensions;
} gnutls_x509_crl_int;

typedef struct gnutls_x509_crt_int
{
  ASN1_TYPE cert;
  int use_extensions;
} gnutls_x509_crt_int;

typedef struct gnutls_x509_crq_int
{
  ASN1_TYPE crq;
} gnutls_x509_crq_int;

typedef struct gnutls_pkcs7_int
{
  ASN1_TYPE pkcs7;
} gnutls_pkcs7_int;

#define MAX_PRIV_PARAMS_SIZE GNUTLS_MAX_PK_PARAMS /* ok for RSA and DSA */

/* parameters should not be larger than this limit */
#define DSA_PRIVATE_PARAMS 5
#define DSA_PUBLIC_PARAMS 4
#define RSA_PRIVATE_PARAMS 6
#define RSA_PUBLIC_PARAMS 2

#if MAX_PRIV_PARAMS_SIZE - RSA_PRIVATE_PARAMS < 0
# error INCREASE MAX_PRIV_PARAMS
#endif

#if MAX_PRIV_PARAMS_SIZE - DSA_PRIVATE_PARAMS < 0
# error INCREASE MAX_PRIV_PARAMS
#endif

typedef struct gnutls_x509_privkey_int
{
  /* the size of params depends on the public
   * key algorithm
   */
  bigint_t params[MAX_PRIV_PARAMS_SIZE];

  /*
   * RSA: [0] is modulus
   *      [1] is public exponent
   *      [2] is private exponent
   *      [3] is prime1 (p)
   *      [4] is prime2 (q)
   *      [5] is coefficient (u == inverse of p mod q)
   *          note that other packages used inverse of q mod p,
   *          so we need to perform conversions.
   * DSA: [0] is p
   *      [1] is q
   *      [2] is g
   *      [3] is y (public key)
   *      [4] is x (private key)
   */
  int params_size;		/* holds the number of params */

  gnutls_pk_algorithm_t pk_algorithm;

  /* The crippled keys will not use the ASN1_TYPE key.  The encoding
   * will only be performed at the export phase, to optimize copying
   * etc. Cannot be used with the exported API (used internally only).
   */
  int crippled;

  ASN1_TYPE key;
} gnutls_x509_privkey_int;

int _gnutls_x509_crt_cpy (gnutls_x509_crt_t dest, gnutls_x509_crt_t src);


int _gnutls_x509_compare_raw_dn (const gnutls_datum_t * dn1,
				 const gnutls_datum_t * dn2);


int _gnutls_x509_crl_cpy (gnutls_x509_crl_t dest, gnutls_x509_crl_t src);
int _gnutls_x509_crl_get_raw_issuer_dn (gnutls_x509_crl_t crl,
					gnutls_datum_t * dn);

/* sign.c */
int _gnutls_x509_sign (const gnutls_datum_t * tbs,
		       gnutls_digest_algorithm_t hash,
		       gnutls_x509_privkey_t signer,
		       gnutls_datum_t * signature);
int _gnutls_x509_sign_tbs (ASN1_TYPE cert, const char *tbs_name,
			   gnutls_digest_algorithm_t hash,
			   gnutls_x509_privkey_t signer,
			   gnutls_datum_t * signature);
int _gnutls_x509_pkix_sign (ASN1_TYPE src, const char *src_name,
			    gnutls_digest_algorithm_t,
			    gnutls_x509_crt_t issuer,
			    gnutls_x509_privkey_t issuer_key);

/* dn.c */
#define OID_X520_COUNTRY_NAME		"2.5.4.6"
#define OID_X520_ORGANIZATION_NAME	"2.5.4.10"
#define OID_X520_ORGANIZATIONAL_UNIT_NAME "2.5.4.11"
#define OID_X520_COMMON_NAME		"2.5.4.3"
#define OID_X520_LOCALITY_NAME		"2.5.4.7"
#define OID_X520_STATE_OR_PROVINCE_NAME	"2.5.4.8"
#define OID_LDAP_DC			"0.9.2342.19200300.100.1.25"
#define OID_LDAP_UID			"0.9.2342.19200300.100.1.1"
#define OID_PKCS9_EMAIL			"1.2.840.113549.1.9.1"

int _gnutls_x509_parse_dn (ASN1_TYPE asn1_struct,
			   const char *asn1_rdn_name, char *buf,
			   size_t * sizeof_buf);

int _gnutls_x509_parse_dn_oid (ASN1_TYPE asn1_struct,
			       const char *asn1_rdn_name, const char *oid,
			       int indx, unsigned int raw_flag, void *buf,
			       size_t * sizeof_buf);

int _gnutls_x509_set_dn_oid (ASN1_TYPE asn1_struct,
			     const char *asn1_rdn_name, const char *oid,
			     int raw_flag, const char *name, int sizeof_name);

int _gnutls_x509_get_dn_oid (ASN1_TYPE asn1_struct,
			     const char *asn1_rdn_name,
			     int indx, void *_oid, size_t * sizeof_oid);

int _gnutls_parse_general_name (ASN1_TYPE src, const char *src_name,
	int seq, void *name, size_t * name_size,
        unsigned int *ret_type, int othername_oid);
                                        
/* dsa.c */


/* verify.c */
int gnutls_x509_crt_is_issuer (gnutls_x509_crt_t cert,
			       gnutls_x509_crt_t issuer);
int _gnutls_x509_verify_algorithm(gnutls_mac_algorithm_t *hash,
				  const gnutls_datum_t * signature,
				  const gnutls_x509_crt_t crt);
int _gnutls_x509_verify_signature (const gnutls_datum_t * tbs,
				   const gnutls_datum_t * hash,
				   const gnutls_datum_t * signature,
				   gnutls_x509_crt_t issuer);
int _gnutls_x509_privkey_verify_signature (const gnutls_datum_t * tbs,
					   const gnutls_datum_t * signature,
					   gnutls_x509_privkey_t issuer);

/* privkey.h */
ASN1_TYPE _gnutls_privkey_decode_pkcs1_rsa_key (const gnutls_datum_t *raw_key,
						gnutls_x509_privkey_t pkey);
int _gnutls_asn1_encode_dsa (ASN1_TYPE * c2, bigint_t * params);

/* extensions.c */
int _gnutls_x509_crl_get_extension (gnutls_x509_crl_t crl,
				const char *extension_id, int indx,
				gnutls_datum_t * ret, unsigned int *_critical);

int _gnutls_x509_crl_get_extension_oid (gnutls_x509_crl_t crl,
				    int indx, void *oid, size_t * sizeof_oid);

int _gnutls_x509_crl_set_extension (gnutls_x509_crl_t crl,
				const char *ext_id,
				const gnutls_datum_t * ext_data,
				unsigned int critical);

int _gnutls_x509_crt_get_extension (gnutls_x509_crt_t cert,
				    const char *extension_id, int indx,
				    gnutls_datum_t * ret,
				    unsigned int *critical);
int _gnutls_x509_crt_get_extension_oid (gnutls_x509_crt_t cert,
					int indx, void *ret,
					size_t * ret_size);
int _gnutls_x509_ext_extract_keyUsage (uint16_t * keyUsage,
				       opaque * extnValue, int extnValueLen);
int _gnutls_x509_ext_extract_basicConstraints (int *CA,
					       int *pathLenConstraint,
					       opaque * extnValue,
					       int extnValueLen);
int _gnutls_x509_crt_set_extension (gnutls_x509_crt_t cert,
				    const char *extension_id,
				    const gnutls_datum_t * ext_data,
				    unsigned int critical);

int
_gnutls_x509_ext_extract_number (opaque *number,
					   size_t* nr_size,
					   opaque * extnValue,
					   int extnValueLen);
int
_gnutls_x509_ext_gen_number (const opaque* nuber, size_t nr_size, gnutls_datum_t * der_ext);


int _gnutls_x509_ext_gen_basicConstraints (int CA, int pathLenConstraint,
					   gnutls_datum_t * der_ext);
int _gnutls_x509_ext_gen_keyUsage (uint16_t usage, gnutls_datum_t * der_ext);
int _gnutls_x509_ext_gen_subject_alt_name (gnutls_x509_subject_alt_name_t
				       type, const void* data, unsigned int data_size,
				       gnutls_datum_t* prev_der_ext, gnutls_datum_t * der_ext);
int
_gnutls_x509_ext_gen_crl_dist_points (gnutls_x509_subject_alt_name_t
				      type, const void *data, unsigned int data_size,
				      unsigned int reason_flags,
				      gnutls_datum_t * der_ext);
int _gnutls_x509_ext_gen_key_id (const void *id, size_t id_size,
				 gnutls_datum_t * der_data);
int _gnutls_x509_ext_gen_auth_key_id (const void *id, size_t id_size,
				      gnutls_datum_t * der_data);
int _gnutls_x509_ext_extract_proxyCertInfo (int *pathLenConstraint,
					    char **policyLanguage,
					    char **policy,
					    size_t *sizeof_policy,
					    opaque * extnValue,
					    int extnValueLen);
int _gnutls_x509_ext_gen_proxyCertInfo (int pathLenConstraint,
					const char *policyLanguage,
					const char *policy,
					size_t sizeof_policy,
					gnutls_datum_t * der_ext);

/* mpi.c */
int _gnutls_x509_crq_get_mpis (gnutls_x509_crq_t cert,
                           bigint_t * params, int *params_size);
                           
int _gnutls_x509_crt_get_mpis (gnutls_x509_crt_t cert,
			       bigint_t * params, int *params_size);
int _gnutls_x509_read_rsa_params (opaque * der, int dersize, bigint_t * params);
int _gnutls_x509_read_dsa_pubkey (opaque * der, int dersize, bigint_t * params);
int _gnutls_x509_read_dsa_params (opaque * der, int dersize, bigint_t * params);

int _gnutls_x509_write_rsa_params (bigint_t * params, int params_size,
				   gnutls_datum_t * der);
int _gnutls_x509_write_dsa_params (bigint_t * params, int params_size,
				   gnutls_datum_t * der);
int _gnutls_x509_write_dsa_public_key (bigint_t * params, int params_size,
				       gnutls_datum_t * der);

int _gnutls_x509_read_uint (ASN1_TYPE node, const char *value,
			    unsigned int *ret);

int _gnutls_x509_read_der_int  (opaque * der, int dersize, bigint_t* out);

int _gnutls_x509_read_int (ASN1_TYPE node, const char *value,
			   bigint_t * ret_mpi);
int _gnutls_x509_write_int (ASN1_TYPE node, const char *value, bigint_t mpi,
			    int lz);
int _gnutls_x509_write_uint32 (ASN1_TYPE node, const char *value,
			       uint32_t num);

int _gnutls_x509_write_sig_params (ASN1_TYPE dst, const char *dst_name,
				   gnutls_pk_algorithm_t pk_algorithm,
				   gnutls_digest_algorithm_t, bigint_t * params,
				   int params_size);
/* pkcs12.h */
#include <gnutls/pkcs12.h>

typedef struct gnutls_pkcs12_int
{
  ASN1_TYPE pkcs12;
} gnutls_pkcs12_int;

#define MAX_BAG_ELEMENTS 32

struct bag_element
{
  gnutls_datum_t data;
  gnutls_pkcs12_bag_type_t type;
  gnutls_datum_t local_key_id;
  char *friendly_name;
};

typedef struct gnutls_pkcs12_bag_int
{
  struct bag_element element[MAX_BAG_ELEMENTS];
  int bag_elements;
} gnutls_pkcs12_bag_int;

#define BAG_PKCS8_KEY "1.2.840.113549.1.12.10.1.1"
#define BAG_PKCS8_ENCRYPTED_KEY "1.2.840.113549.1.12.10.1.2"
#define BAG_CERTIFICATE "1.2.840.113549.1.12.10.1.3"
#define BAG_CRL "1.2.840.113549.1.12.10.1.4"
#define BAG_SECRET "1.2.840.113549.1.12.10.1.5"

/* PKCS #7
 */
#define DATA_OID "1.2.840.113549.1.7.1"
#define ENC_DATA_OID "1.2.840.113549.1.7.6"

/* Bag attributes
 */
#define FRIENDLY_NAME_OID "1.2.840.113549.1.9.20"
#define KEY_ID_OID "1.2.840.113549.1.9.21"

int
_gnutls_pkcs12_string_to_key (unsigned int id, const opaque * salt,
		       unsigned int salt_size, unsigned int iter,
		       const char *pw, unsigned int req_keylen,
		       opaque * keybuf);

int _gnutls_pkcs7_decrypt_data (const gnutls_datum_t * data,
				const char *password, gnutls_datum_t * dec);

typedef enum schema_id
  {
    PBES2_GENERIC, /* when the algorithm is unknown, temporal use when reading only */
    PBES2_3DES,			/* the stuff in PKCS #5 */
    PBES2_AES_128,
    PBES2_AES_192,
    PBES2_AES_256,
    PKCS12_3DES_SHA1,		/* the stuff in PKCS #12 */
    PKCS12_ARCFOUR_SHA1,
    PKCS12_RC2_40_SHA1
  } schema_id;

int _gnutls_pkcs_flags_to_schema(unsigned int flags);
int _gnutls_pkcs7_encrypt_data (schema_id schema,
				const gnutls_datum_t * data,
				const char *password, gnutls_datum_t * enc);
int _pkcs12_decode_safe_contents (const gnutls_datum_t * content,
				  gnutls_pkcs12_bag_t bag);

int
_pkcs12_encode_safe_contents (gnutls_pkcs12_bag_t bag, ASN1_TYPE * content,
			      int *enc);

int _pkcs12_decode_crt_bag (gnutls_pkcs12_bag_type_t type,
			    const gnutls_datum_t * in, gnutls_datum_t * out);
int _pkcs12_encode_crt_bag (gnutls_pkcs12_bag_type_t type,
			    const gnutls_datum_t * raw, gnutls_datum_t * out);

/* crq */
int _gnutls_x509_crq_set_extension (gnutls_x509_crq_t crq,
				const char *ext_id,
				const gnutls_datum_t * ext_data,
				unsigned int critical);

#endif