OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	11/17/2022 06:42:18 AM	rwxr-xr-x
📄 ablk_helper.h	773 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 acompress.h	7.89 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 aead.h	18.1 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 aes.h	1.03 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 akcipher.h	11.7 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 algapi.h	11.12 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 authenc.h	845 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 b128ops.h	2.41 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 blake2s.h	2.37 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 blowfish.h	415 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 cast5.h	590 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 cast6.h	636 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 cast_common.h	232 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 cbc.h	3.48 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 chacha20.h	1.01 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 cryptd.h	2.5 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 crypto_wq.h	161 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 ctr.h	524 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 des.h	542 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 dh.h	2.62 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 drbg.h	9.05 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 ecdh.h	2.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 engine.h	4 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 gcm.h	140 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 gf128mul.h	9.41 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 ghash.h	381 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 hash.h	31.48 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 hash_info.h	1.13 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 hmac.h	173 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 if_alg.h	7 KB	11/01/2022 04:52:05 PM	rw-r--r--
📁 internal	-	11/17/2022 06:42:23 AM	rwxr-xr-x
📄 kpp.h	9.68 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 lrw.h	1.22 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mcryptd.h	2.37 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 md5.h	497 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 null.h	569 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 padlock.h	649 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 pcrypt.h	1.4 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 pkcs7.h	1.21 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 poly1305.h	920 bytes	11/01/2022 04:52:05 PM	rw-r--r--
📄 public_key.h	2.08 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 rng.h	6.66 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 scatterwalk.h	3.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 serpent.h	712 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 sha.h	2.88 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sha1_base.h	2.47 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sha256_base.h	3.03 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 sha3.h	704 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 sha512_base.h	3.19 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 skcipher.h	20.7 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 sm3.h	833 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 sm3_base.h	2.95 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 twofish.h	755 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 xts.h	1.81 KB	01/28/2018 09:20:33 PM	rw-r--r--

Editing: drbg.h

/*
 * DRBG based on NIST SP800-90A
 *
 * Copyright Stephan Mueller <smueller@chronox.de>, 2014
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, and the entire permission notice in its entirety,
 *    including the disclaimer of warranties.
 * 2. 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.
 * 3. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.
 *
 * ALTERNATIVELY, this product may be distributed under the terms of
 * the GNU General Public License, in which case the provisions of the GPL are
 * required INSTEAD OF the above restrictions.  (This clause is
 * necessary due to a potential bad interaction between the GPL and
 * the restrictions contained in a BSD-style copyright.)
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
 * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR 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 NOT ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

#ifndef _DRBG_H
#define _DRBG_H

#include <linux/random.h>
#include <linux/scatterlist.h>
#include <crypto/hash.h>
#include <crypto/skcipher.h>
#include <linux/module.h>
#include <linux/crypto.h>
#include <linux/slab.h>
#include <crypto/internal/rng.h>
#include <crypto/rng.h>
#include <linux/fips.h>
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/workqueue.h>

/*
 * Concatenation Helper and string operation helper
 *
 * SP800-90A requires the concatenation of different data. To avoid copying
 * buffers around or allocate additional memory, the following data structure
 * is used to point to the original memory with its size. In addition, it
 * is used to build a linked list. The linked list defines the concatenation
 * of individual buffers. The order of memory block referenced in that
 * linked list determines the order of concatenation.
 */
struct drbg_string {
	const unsigned char *buf;
	size_t len;
	struct list_head list;
};

static inline void drbg_string_fill(struct drbg_string *string,
				    const unsigned char *buf, size_t len)
{
	string->buf = buf;
	string->len = len;
	INIT_LIST_HEAD(&string->list);
}

struct drbg_state;
typedef uint32_t drbg_flag_t;

struct drbg_core {
	drbg_flag_t flags;	/* flags for the cipher */
	__u8 statelen;		/* maximum state length */
	__u8 blocklen_bytes;	/* block size of output in bytes */
	char cra_name[CRYPTO_MAX_ALG_NAME]; /* mapping to kernel crypto API */
	 /* kernel crypto API backend cipher name */
	char backend_cra_name[CRYPTO_MAX_ALG_NAME];
};

struct drbg_state_ops {
	int (*update)(struct drbg_state *drbg, struct list_head *seed,
		      int reseed);
	int (*generate)(struct drbg_state *drbg,
			unsigned char *buf, unsigned int buflen,
			struct list_head *addtl);
	int (*crypto_init)(struct drbg_state *drbg);
	int (*crypto_fini)(struct drbg_state *drbg);

};

struct drbg_test_data {
	struct drbg_string *testentropy; /* TEST PARAMETER: test entropy */
};

enum drbg_seed_state {
	DRBG_SEED_STATE_UNSEEDED,
	DRBG_SEED_STATE_PARTIAL, /* Seeded with !rng_is_initialized() */
	DRBG_SEED_STATE_FULL,
};

struct drbg_state {
	struct mutex drbg_mutex;	/* lock around DRBG */
	unsigned char *V;	/* internal state 10.1.1.1 1a) */
	unsigned char *Vbuf;
	/* hash: static value 10.1.1.1 1b) hmac / ctr: key */
	unsigned char *C;
	unsigned char *Cbuf;
	/* Number of RNG requests since last reseed -- 10.1.1.1 1c) */
	size_t reseed_ctr;
	size_t reseed_threshold;
	 /* some memory the DRBG can use for its operation */
	unsigned char *scratchpad;
	unsigned char *scratchpadbuf;
	void *priv_data;	/* Cipher handle */

struct crypto_skcipher *ctr_handle;	/* CTR mode cipher handle */
	struct skcipher_request *ctr_req;	/* CTR mode request handle */
	__u8 *ctr_null_value_buf;		/* CTR mode unaligned buffer */
	__u8 *ctr_null_value;			/* CTR mode aligned zero buf */
	__u8 *outscratchpadbuf;			/* CTR mode output scratchpad */
        __u8 *outscratchpad;			/* CTR mode aligned outbuf */
	struct crypto_wait ctr_wait;		/* CTR mode async wait obj */

enum drbg_seed_state seeded;		/* DRBG fully seeded? */
	bool pr;		/* Prediction resistance enabled? */
	bool fips_primed;	/* Continuous test primed? */
	unsigned char *prev;	/* FIPS 140-2 continuous test value */
	struct crypto_rng *jent;
	const struct drbg_state_ops *d_ops;
	const struct drbg_core *core;
	struct drbg_string test_data;
};

static inline __u8 drbg_statelen(struct drbg_state *drbg)
{
	if (drbg && drbg->core)
		return drbg->core->statelen;
	return 0;
}

static inline __u8 drbg_blocklen(struct drbg_state *drbg)
{
	if (drbg && drbg->core)
		return drbg->core->blocklen_bytes;
	return 0;
}

static inline __u8 drbg_keylen(struct drbg_state *drbg)
{
	if (drbg && drbg->core)
		return (drbg->core->statelen - drbg->core->blocklen_bytes);
	return 0;
}

static inline size_t drbg_max_request_bytes(struct drbg_state *drbg)
{
	/* SP800-90A requires the limit 2**19 bits, but we return bytes */
	return (1 << 16);
}

static inline size_t drbg_max_addtl(struct drbg_state *drbg)
{
	/* SP800-90A requires 2**35 bytes additional info str / pers str */
#if (__BITS_PER_LONG == 32)
	/*
	 * SP800-90A allows smaller maximum numbers to be returned -- we
	 * return SIZE_MAX - 1 to allow the verification of the enforcement
	 * of this value in drbg_healthcheck_sanity.
	 */
	return (SIZE_MAX - 1);
#else
	return (1UL<<35);
#endif
}

static inline size_t drbg_max_requests(struct drbg_state *drbg)
{
	/* SP800-90A requires 2**48 maximum requests before reseeding */
	return (1<<20);
}

/*
 * This is a wrapper to the kernel crypto API function of
 * crypto_rng_generate() to allow the caller to provide additional data.
 *
 * @drng DRBG handle -- see crypto_rng_get_bytes
 * @outbuf output buffer -- see crypto_rng_get_bytes
 * @outlen length of output buffer -- see crypto_rng_get_bytes
 * @addtl_input additional information string input buffer
 * @addtllen length of additional information string buffer
 *
 * return
 *	see crypto_rng_get_bytes
 */
static inline int crypto_drbg_get_bytes_addtl(struct crypto_rng *drng,
			unsigned char *outbuf, unsigned int outlen,
			struct drbg_string *addtl)
{
	return crypto_rng_generate(drng, addtl->buf, addtl->len,
				   outbuf, outlen);
}

/*
 * TEST code
 *
 * This is a wrapper to the kernel crypto API function of
 * crypto_rng_generate() to allow the caller to provide additional data and
 * allow furnishing of test_data
 *
 * @drng DRBG handle -- see crypto_rng_get_bytes
 * @outbuf output buffer -- see crypto_rng_get_bytes
 * @outlen length of output buffer -- see crypto_rng_get_bytes
 * @addtl_input additional information string input buffer
 * @addtllen length of additional information string buffer
 * @test_data filled test data
 *
 * return
 *	see crypto_rng_get_bytes
 */
static inline int crypto_drbg_get_bytes_addtl_test(struct crypto_rng *drng,
			unsigned char *outbuf, unsigned int outlen,
			struct drbg_string *addtl,
			struct drbg_test_data *test_data)
{
	crypto_rng_set_entropy(drng, test_data->testentropy->buf,
			       test_data->testentropy->len);
	return crypto_rng_generate(drng, addtl->buf, addtl->len,
				   outbuf, outlen);
}

/*
 * TEST code
 *
 * This is a wrapper to the kernel crypto API function of
 * crypto_rng_reset() to allow the caller to provide test_data
 *
 * @drng DRBG handle -- see crypto_rng_reset
 * @pers personalization string input buffer
 * @perslen length of additional information string buffer
 * @test_data filled test data
 *
 * return
 *	see crypto_rng_reset
 */
static inline int crypto_drbg_reset_test(struct crypto_rng *drng,
					 struct drbg_string *pers,
					 struct drbg_test_data *test_data)
{
	crypto_rng_set_entropy(drng, test_data->testentropy->buf,
			       test_data->testentropy->len);
	return crypto_rng_reset(drng, pers->buf, pers->len);
}

/* DRBG type flags */
#define DRBG_CTR	((drbg_flag_t)1<<0)
#define DRBG_HMAC	((drbg_flag_t)1<<1)
#define DRBG_HASH	((drbg_flag_t)1<<2)
#define DRBG_TYPE_MASK	(DRBG_CTR | DRBG_HMAC | DRBG_HASH)
/* DRBG strength flags */
#define DRBG_STRENGTH128	((drbg_flag_t)1<<3)
#define DRBG_STRENGTH192	((drbg_flag_t)1<<4)
#define DRBG_STRENGTH256	((drbg_flag_t)1<<5)
#define DRBG_STRENGTH_MASK	(DRBG_STRENGTH128 | DRBG_STRENGTH192 | \
				 DRBG_STRENGTH256)

enum drbg_prefixes {
	DRBG_PREFIX0 = 0x00,
	DRBG_PREFIX1,
	DRBG_PREFIX2,
	DRBG_PREFIX3
};

#endif /* _DRBG_H */