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/*
* Copyright (c) 2007-2017, Cameron Rich
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the axTLS project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS 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 COPYRIGHT OWNER OR
* 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.
*/
/**
* @file crypto_misc.h
*/
#ifndef HEADER_CRYPTO_MISC_H
#define HEADER_CRYPTO_MISC_H
#ifdef __cplusplus
extern "C" {
#endif
//#include <stdbool.h>
#define bool unsigned int
#define true 1
#define false 0
#include "crypto.h"
#include "bigint.h"
/**************************************************************************
* X509 declarations
**************************************************************************/
#define X509_OK 0
#define X509_NOT_OK -1
#define X509_VFY_ERROR_NO_TRUSTED_CERT -2
#define X509_VFY_ERROR_BAD_SIGNATURE -3
#define X509_VFY_ERROR_NOT_YET_VALID -4
#define X509_VFY_ERROR_EXPIRED -5
#define X509_VFY_ERROR_SELF_SIGNED -6
#define X509_VFY_ERROR_INVALID_CHAIN -7
#define X509_VFY_ERROR_UNSUPPORTED_DIGEST -8
#define X509_INVALID_PRIV_KEY -9
#define X509_INVALID_PUB_KEY -10
#define X509_MAX_CERTS -11
#define X509_VFY_ERROR_BASIC_CONSTRAINT -12
/*
* The Distinguished Name
*/
#define X509_NUM_DN_TYPES 6
#define X509_COMMON_NAME 0
#define X509_ORGANIZATION 1
#define X509_ORGANIZATIONAL_UNIT 2
#define X509_LOCATION 3
#define X509_COUNTRY 4
#define X509_STATE 5
/*
* Key Usage bits
*/
#define IS_SET_KEY_USAGE_FLAG(A, B) (A->key_usage & B)
#define KEY_USAGE_DIGITAL_SIGNATURE 0x0080
#define KEY_USAGE_NON_REPUDIATION 0x0040
#define KEY_USAGE_KEY_ENCIPHERMENT 0x0020
#define KEY_USAGE_DATA_ENCIPHERMENT 0x0010
#define KEY_USAGE_KEY_AGREEMENT 0x0008
#define KEY_USAGE_KEY_CERT_SIGN 0x0004
#define KEY_USAGE_CRL_SIGN 0x0002
#define KEY_USAGE_ENCIPHER_ONLY 0x0001
#define KEY_USAGE_DECIPHER_ONLY 0x8000
struct _x509_ctx
{
char *ca_cert_dn[X509_NUM_DN_TYPES];
char *cert_dn[X509_NUM_DN_TYPES];
char **subject_alt_dnsnames;
time_t not_before;
time_t not_after;
uint8_t *signature;
RSA_CTX *rsa_ctx;
bigint *digest;
uint16_t sig_len;
uint8_t sig_type;
bool basic_constraint_present;
bool basic_constraint_is_critical;
bool key_usage_present;
bool key_usage_is_critical;
bool subject_alt_name_present;
bool subject_alt_name_is_critical;
bool basic_constraint_cA;
int basic_constraint_pathLenConstraint;
uint32_t key_usage;
struct _x509_ctx *next;
};
typedef struct _x509_ctx X509_CTX;
#if defined(CONFIG_SSL_CERT_VERIFICATION) || defined(CONFIG_DEBUG)
typedef struct
{
X509_CTX *cert[CONFIG_X509_MAX_CA_CERTS];
} CA_CERT_CTX;
#endif
int x509_new(const uint8_t *cert, int *len, X509_CTX **ctx);
void x509_free(X509_CTX *x509_ctx);
#if defined(CONFIG_SSL_CERT_VERIFICATION) || defined(CONFIG_DEBUG)
int x509_verify(const CA_CERT_CTX *ca_cert_ctx, const X509_CTX *cert,
int *pathLenConstraint);
void x509_print(const X509_CTX *cert, CA_CERT_CTX *ca_cert_ctx);
#endif
const char * x509_display_error(int error);
/**************************************************************************
* ASN1 declarations
**************************************************************************/
#define ASN1_BOOLEAN 0x01
#define ASN1_INTEGER 0x02
#define ASN1_BIT_STRING 0x03
#define ASN1_OCTET_STRING 0x04
#define ASN1_NULL 0x05
#define ASN1_PRINTABLE_STR2 0x0C
#define ASN1_OID 0x06
#define ASN1_PRINTABLE_STR2 0x0C
#define ASN1_PRINTABLE_STR 0x13
#define ASN1_TELETEX_STR 0x14
#define ASN1_IA5_STR 0x16
#define ASN1_UTC_TIME 0x17
#define ASN1_GENERALIZED_TIME 0x18
#define ASN1_UNICODE_STR 0x1e
#define ASN1_SEQUENCE 0x30
#define ASN1_CONTEXT_DNSNAME 0x82
#define ASN1_SET 0x31
#define ASN1_V3_DATA 0xa3
#define ASN1_IMPLICIT_TAG 0x80
#define ASN1_CONTEXT_DNSNAME 0x82
#define ASN1_EXPLICIT_TAG 0xa0
#define ASN1_V3_DATA 0xa3
#define SIG_TYPE_MD5 0x04
#define SIG_TYPE_SHA1 0x05
#define SIG_TYPE_SHA256 0x0b
#define SIG_TYPE_SHA384 0x0c
#define SIG_TYPE_SHA512 0x0d
uint32_t get_asn1_length(const uint8_t *buf, int *offset);
int asn1_get_private_key(const uint8_t *buf, int len, RSA_CTX **rsa_ctx);
int asn1_get_public_key(const uint8_t *cert, int *offset, RSA_CTX **rsa_ctx); // GWG
int asn1_next_obj(const uint8_t *buf, int *offset, int obj_type);
int asn1_skip_obj(const uint8_t *buf, int *offset, int obj_type);
int asn1_get_big_int(const uint8_t *buf, int *offset, uint8_t **object);
int asn1_get_int(const uint8_t *buf, int *offset, int32_t *val);
int asn1_get_bool(const uint8_t *buf, int *offset, bool *val);
int asn1_get_bit_string_as_int(const uint8_t *buf, int *offset, uint32_t *val);
int asn1_version(const uint8_t *cert, int *offset, int *val);
int asn1_validity(const uint8_t *cert, int *offset, X509_CTX *x509_ctx);
int asn1_name(const uint8_t *cert, int *offset, char *dn[]);
int asn1_public_key(const uint8_t *cert, int *offset, X509_CTX *x509_ctx);
#ifdef CONFIG_SSL_CERT_VERIFICATION
int asn1_signature(const uint8_t *cert, int *offset, X509_CTX *x509_ctx);
int asn1_is_subject_alt_name(const uint8_t *cert, int offset);
int asn1_is_basic_constraints(const uint8_t *cert, int offset);
int asn1_is_key_usage(const uint8_t *cert, int offset);
bool asn1_is_critical_ext(const uint8_t *buf, int *offset);
#endif /* CONFIG_SSL_CERT_VERIFICATION */
int asn1_compare_dn(char * const dn1[], char * const dn2[]);
int asn1_signature_type(const uint8_t *cert,
int *offset, X509_CTX *x509_ctx);
/**************************************************************************
* MISC declarations
**************************************************************************/
#define SALT_SIZE 8
extern const char * const unsupported_str;
typedef void (*crypt_func)(void *, const uint8_t *, uint8_t *, int);
typedef void (*hmac_func)(const uint8_t *msg, int length, const uint8_t *key,
int key_len, uint8_t *digest);
int get_file(const char *filename, uint8_t **buf);
#if defined(CONFIG_SSL_FULL_MODE) || defined(WIN32) || defined(CONFIG_DEBUG)
EXP_FUNC void STDCALL print_blob(const char *format, const uint8_t *data, int size, ...);
#else
#define print_blob(...)
#endif
EXP_FUNC int STDCALL base64_decode(const char *in, int len,
uint8_t *out, int *outlen);
#ifdef __cplusplus
}
#endif
#endif
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