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typedef struct gnutls_pkcs12_int {
    ASN1_TYPE pkcs12;
} gnutls_pkcs12_int;

typedef enum gnutls_pkcs12_bag_type_t {
    GNUTLS_BAG_EMPTY = 0,

    GNUTLS_BAG_PKCS8_ENCRYPTED_KEY = 1,
    GNUTLS_BAG_PKCS8_KEY,
    GNUTLS_BAG_CERTIFICATE,
    GNUTLS_BAG_CRL,
    GNUTLS_BAG_ENCRYPTED = 10,
    GNUTLS_BAG_UNKNOWN = 20
} gnutls_pkcs12_bag_type_t;

#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"

/* 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"

typedef struct gnutls_pkcs12_int *gnutls_pkcs12_t;
typedef struct gnutls_pkcs12_bag_int *gnutls_pkcs12_bag_t;

int gnutls_pkcs12_init(gnutls_pkcs12_t * pkcs12);
void gnutls_pkcs12_deinit(gnutls_pkcs12_t pkcs12);
int gnutls_pkcs12_import(gnutls_pkcs12_t pkcs12,
			 const gnutls_datum_t * data,
			 gnutls_x509_crt_fmt_t format, unsigned int flags);

int gnutls_pkcs12_get_bag(gnutls_pkcs12_t pkcs12,
			  int indx, gnutls_pkcs12_bag_t bag);

int gnutls_pkcs12_bag_init(gnutls_pkcs12_bag_t * bag);
void gnutls_pkcs12_bag_deinit(gnutls_pkcs12_bag_t bag);

int
_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,			/* the stuff in PKCS #5 */
    PKCS12_3DES_SHA1,		/* the fucking stuff in PKCS #12 */
    PKCS12_ARCFOUR_SHA1,
    PKCS12_RC2_40_SHA1
} schema_id;

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);