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/* tokens.h --- Types for DIGEST-MD5 tokens.
* Copyright (C) 2004-2025 Simon Josefsson
*
* This file is part of GNU SASL Library.
*
* GNU SASL 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.
*
* GNU SASL 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 GNU SASL Library; if not, see
* <https://www.gnu.org/licenses/>.
*
*/
#ifndef DIGEST_MD5_TOKENS_H
# define DIGEST_MD5_TOKENS_H
/* Get size_t. */
# include <stddef.h>
/* Length of MD5 output. */
# define DIGEST_MD5_LENGTH 16
/* Quality of Protection types. */
enum digest_md5_qop
{
DIGEST_MD5_QOP_AUTH = 1,
DIGEST_MD5_QOP_AUTH_INT = 2,
DIGEST_MD5_QOP_AUTH_CONF = 4
};
typedef enum digest_md5_qop digest_md5_qop;
/* Cipher types. */
enum digest_md5_cipher
{
DIGEST_MD5_CIPHER_DES = 1,
DIGEST_MD5_CIPHER_3DES = 2,
DIGEST_MD5_CIPHER_RC4 = 4,
DIGEST_MD5_CIPHER_RC4_40 = 8,
DIGEST_MD5_CIPHER_RC4_56 = 16,
DIGEST_MD5_CIPHER_AES_CBC = 32
};
typedef enum digest_md5_cipher digest_md5_cipher;
/*
* digest-challenge =
* 1#( realm | nonce | qop-options | stale | server_maxbuf | charset
* algorithm | cipher-opts | auth-param )
*
* realm = "realm" "=" <"> realm-value <">
* realm-value = qdstr-val
* nonce = "nonce" "=" <"> nonce-value <">
* nonce-value = *qdtext
* qop-options = "qop" "=" <"> qop-list <">
* qop-list = 1#qop-value
* qop-value = "auth" | "auth-int" | "auth-conf" | qop-token
* ;; qop-token is reserved for identifying future
* ;; extensions to DIGEST-MD5
* qop-token = token
* stale = "stale" "=" "true"
* server_maxbuf = "maxbuf" "=" maxbuf-value
* maxbuf-value = 1*DIGIT
* charset = "charset" "=" "utf-8"
* algorithm = "algorithm" "=" "md5-sess"
* cipher-opts = "cipher" "=" <"> 1#cipher-value <">
* cipher-value = "3des" | "des" | "rc4-40" | "rc4" |
* "rc4-56" | "aes-cbc" | cipher-token
* ;; "des" and "3des" ciphers are obsolete.
* ;; cipher-token is reserved for new ciphersuites
* cipher-token = token
* auth-param = token "=" ( token | quoted-string )
*
*/
struct digest_md5_challenge
{
size_t nrealms;
char **realms;
char *nonce;
int qops;
int stale;
unsigned long servermaxbuf;
int utf8;
int ciphers;
};
typedef struct digest_md5_challenge digest_md5_challenge;
# define DIGEST_MD5_RESPONSE_LENGTH 32
/*
* digest-response = 1#( username | realm | nonce | cnonce |
* nonce-count | qop | digest-uri | response |
* client_maxbuf | charset | cipher | authzid |
* auth-param )
*
* username = "username" "=" <"> username-value <">
* username-value = qdstr-val
* cnonce = "cnonce" "=" <"> cnonce-value <">
* cnonce-value = *qdtext
* nonce-count = "nc" "=" nc-value
* nc-value = 8LHEX
* client_maxbuf = "maxbuf" "=" maxbuf-value
* qop = "qop" "=" qop-value
* digest-uri = "digest-uri" "=" <"> digest-uri-value <">
* digest-uri-value = serv-type "/" host [ "/" serv-name ]
* serv-type = 1*ALPHA
* serv-name = host
* response = "response" "=" response-value
* response-value = 32LHEX
* LHEX = "0" | "1" | "2" | "3" |
* "4" | "5" | "6" | "7" |
* "8" | "9" | "a" | "b" |
* "c" | "d" | "e" | "f"
* cipher = "cipher" "=" cipher-value
* authzid = "authzid" "=" <"> authzid-value <">
* authzid-value = qdstr-val
*
*/
struct digest_md5_response
{
char *username;
char *realm;
char *nonce;
char *cnonce;
unsigned long nc;
digest_md5_qop qop;
char *digesturi;
unsigned long clientmaxbuf;
int utf8;
digest_md5_cipher cipher;
char *authzid;
char response[DIGEST_MD5_RESPONSE_LENGTH + 1];
};
typedef struct digest_md5_response digest_md5_response;
/*
* response-auth = "rspauth" "=" response-value
*/
struct digest_md5_finish
{
char rspauth[DIGEST_MD5_RESPONSE_LENGTH + 1];
};
typedef struct digest_md5_finish digest_md5_finish;
#endif /* DIGEST_MD5_TOKENS_H */
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