lws-jwk.h

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/*
 * libwebsockets - small server side websockets and web server implementation
 *
 * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

 
enum enum_jwk_meta_tok {
        JWK_META_KTY,
        JWK_META_KID,
        JWK_META_USE,
        JWK_META_KEY_OPS,
        JWK_META_X5C,
        JWK_META_ALG,
 
        LWS_COUNT_JWK_ELEMENTS
};
 
struct lws_jwk {
        /* key data elements */
        struct lws_gencrypto_keyelem e[LWS_GENCRYPTO_MAX_KEYEL_COUNT];
        /* generic meta key elements, like KID */
        struct lws_gencrypto_keyelem meta[LWS_COUNT_JWK_ELEMENTS];
        int kty;                        
        char private_key; /* nonzero = has private key elements */
};
 
typedef int (*lws_jwk_key_import_callback)(struct lws_jwk *s, void *user);
 
struct lws_jwk_parse_state {
        struct lws_jwk *jwk;
        char b64[(((8192 / 8) * 4) / 3) + 1]; /* enough for 8Kb key */
        lws_jwk_key_import_callback per_key_cb;
        void *user;
        int pos;
        int cose_state;
        int seen;
        unsigned int possible;
};

LWS_VISIBLE LWS_EXTERN int
lws_jwk_import(struct lws_jwk *jwk, lws_jwk_key_import_callback cb, void *user,
               const char *in, size_t len);

LWS_VISIBLE LWS_EXTERN void
lws_jwk_destroy(struct lws_jwk *jwk);

LWS_VISIBLE LWS_EXTERN int
lws_jwk_dup_oct(struct lws_jwk *jwk, const void *key, int len);
 
#define LWSJWKF_EXPORT_PRIVATE                          (1 << 0)
#define LWSJWKF_EXPORT_NOCRLF                           (1 << 1)

LWS_VISIBLE LWS_EXTERN int
lws_jwk_export(struct lws_jwk *jwk, int flags, char *p, int *len);

LWS_VISIBLE LWS_EXTERN int
lws_jwk_load(struct lws_jwk *jwk, const char *filename,
             lws_jwk_key_import_callback cb, void *user);

LWS_VISIBLE LWS_EXTERN int
lws_jwk_save(struct lws_jwk *jwk, const char *filename);

LWS_VISIBLE LWS_EXTERN int
lws_jwk_rfc7638_fingerprint(struct lws_jwk *jwk, char *digest32);

LWS_VISIBLE LWS_EXTERN int
lws_jwk_strdup_meta(struct lws_jwk *jwk, enum enum_jwk_meta_tok idx,
                    const char *in, int len);
 
 
LWS_VISIBLE LWS_EXTERN int
lws_jwk_dump(struct lws_jwk *jwk);

LWS_VISIBLE LWS_EXTERN int
lws_jwk_generate(struct lws_context *context, struct lws_jwk *jwk,
                 enum lws_gencrypto_kty kty, int bits, const char *curve);