[thirdparty/openssl.git] / providers / default / ciphers / cipher_des.c

/*
 * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include "cipher_locl.h"
#include "cipher_des.h"
#include "crypto/rand.h"
#include "internal/provider_algs.h"
#include "internal/providercommonerr.h"

/* TODO(3.0) Figure out what flags need to be here */
#define DES_FLAGS (EVP_CIPH_RAND_KEY)

static OSSL_OP_cipher_freectx_fn des_freectx;
static OSSL_OP_cipher_encrypt_init_fn des_einit;
static OSSL_OP_cipher_decrypt_init_fn des_dinit;
static OSSL_OP_cipher_get_ctx_params_fn des_get_ctx_params;
static OSSL_OP_cipher_gettable_ctx_params_fn des_gettable_ctx_params;

static void *des_newctx(void *provctx, size_t kbits, size_t blkbits,
                        size_t ivbits, unsigned int mode, uint64_t flags,
                        const PROV_CIPHER_HW *hw)
{
    PROV_DES_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));

    if (ctx != NULL)
        cipher_generic_initkey(ctx, kbits, blkbits, ivbits, mode, flags, hw,
                               provctx);
    return ctx;
}

static void des_freectx(void *vctx)
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;

    OPENSSL_clear_free(ctx,  sizeof(*ctx));
}

static int des_init(void *vctx, const unsigned char *key, size_t keylen,
                    const unsigned char *iv, size_t ivlen, int enc)
{
    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;

    ctx->enc = enc;

    if (iv != NULL) {
        if (ivlen != ctx->ivlen) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IVLEN);
            return 0;
        }
        memcpy(ctx->iv, iv, ivlen);
    }

    if (key != NULL) {
        if (keylen != ctx->keylen) {
            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEYLEN);
            return 0;
        }
        return ctx->hw->init(ctx, key, keylen);
    }
    return 1;
}

static int des_einit(void *vctx, const unsigned char *key, size_t keylen,
                     const unsigned char *iv, size_t ivlen)
{
    return des_init(vctx, key, keylen, iv, ivlen, 1);
}

static int des_dinit(void *vctx, const unsigned char *key, size_t keylen,
                     const unsigned char *iv, size_t ivlen)
{
    return des_init(vctx, key, keylen, iv, ivlen, 0);
}

static int des_generatekey(PROV_CIPHER_CTX *ctx, void *ptr)
{

    DES_cblock *deskey = ptr;
    size_t kl = ctx->keylen;

    if (kl == 0 || rand_priv_bytes_ex(ctx->libctx, ptr, kl) <= 0)
        return 0;
    DES_set_odd_parity(deskey);
    return 1;
}

CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(des)
    OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY, NULL, 0),
CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(des)

static int des_get_ctx_params(void *vctx, OSSL_PARAM params[])
{
    PROV_CIPHER_CTX  *ctx = (PROV_CIPHER_CTX *)vctx;
    OSSL_PARAM *p;

    if (!cipher_generic_get_ctx_params(vctx, params))
        return 0;

    p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_RANDOM_KEY);
    if (p != NULL && !des_generatekey(ctx, p->data)) {
        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GENERATE_KEY);
        return 0;
    }
    return 1;
}

#define IMPLEMENT_des_cipher(type, lcmode, UCMODE, flags,                      \
                             kbits, blkbits, ivbits, block)                    \
static OSSL_OP_cipher_newctx_fn type##_##lcmode##_newctx;                      \
static void *des_##lcmode##_newctx(void *provctx)                              \
{                                                                              \
    return des_newctx(provctx, kbits, blkbits, ivbits,                         \
                      EVP_CIPH_##UCMODE##_MODE, flags,                         \
                      PROV_CIPHER_HW_des_##lcmode());                          \
}                                                                              \
static OSSL_OP_cipher_get_params_fn des_##lcmode##_get_params;                 \
static int des_##lcmode##_get_params(OSSL_PARAM params[])                      \
{                                                                              \
    return cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, flags,  \
                                     kbits, blkbits, ivbits);                  \
}                                                                              \
const OSSL_DISPATCH des_##lcmode##_functions[] = {                             \
    { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))des_einit },              \
    { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))des_dinit },              \
    { OSSL_FUNC_CIPHER_UPDATE,                                                 \
      (void (*)(void))cipher_generic_##block##_update },                       \
    { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))cipher_generic_##block##_final },\
    { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))cipher_generic_cipher },        \
    { OSSL_FUNC_CIPHER_NEWCTX,                                                 \
      (void (*)(void))des_##lcmode##_newctx },                                 \
    { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))des_freectx },                 \
    { OSSL_FUNC_CIPHER_GET_PARAMS,                                             \
      (void (*)(void))des_##lcmode##_get_params },                             \
    { OSSL_FUNC_CIPHER_GETTABLE_PARAMS,                                        \
      (void (*)(void))cipher_generic_gettable_params },                        \
    { OSSL_FUNC_CIPHER_GET_CTX_PARAMS, (void (*)(void))des_get_ctx_params },   \
    { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,                                    \
      (void (*)(void))des_gettable_ctx_params },                               \
    { OSSL_FUNC_CIPHER_SET_CTX_PARAMS,                                         \
     (void (*)(void))cipher_generic_set_ctx_params },                          \
    { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,                                    \
     (void (*)(void))cipher_generic_settable_ctx_params },                     \
    { 0, NULL }                                                                \
}

/* des_ecb_functions */
IMPLEMENT_des_cipher(des, ecb, ECB, DES_FLAGS, 64, 64, 0, block);
/* des_cbc_functions */
IMPLEMENT_des_cipher(des, cbc, CBC, DES_FLAGS, 64, 64, 64, block);
/* des_ofb64_functions */
IMPLEMENT_des_cipher(des, ofb64, OFB, DES_FLAGS, 64, 8, 64, stream);
/* des_cfb64_functions */
IMPLEMENT_des_cipher(des, cfb64, CFB, DES_FLAGS, 64, 8, 64, stream);
/* des_cfb1_functions */
IMPLEMENT_des_cipher(des, cfb1, CFB, DES_FLAGS, 64, 8, 64, stream);
/* des_cfb8_functions */
IMPLEMENT_des_cipher(des, cfb8, CFB, DES_FLAGS, 64, 8, 64, stream);
Commit	Line	Data
e3f3ee44 SL	1	/*
	2	* Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
	3	*
	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
	8	*/
	9
	10	#include "cipher_locl.h"
	11	#include "cipher_des.h"
25f2138b	12	#include "crypto/rand.h"
e3f3ee44 SL	13	#include "internal/provider_algs.h"
	14	#include "internal/providercommonerr.h"
	15
	16	/* TODO(3.0) Figure out what flags need to be here */
	17	#define DES_FLAGS (EVP_CIPH_RAND_KEY)
	18
	19	static OSSL_OP_cipher_freectx_fn des_freectx;
	20	static OSSL_OP_cipher_encrypt_init_fn des_einit;
	21	static OSSL_OP_cipher_decrypt_init_fn des_dinit;
	22	static OSSL_OP_cipher_get_ctx_params_fn des_get_ctx_params;
	23	static OSSL_OP_cipher_gettable_ctx_params_fn des_gettable_ctx_params;
	24
	25	static void des_newctx(void provctx, size_t kbits, size_t blkbits,
	26	size_t ivbits, unsigned int mode, uint64_t flags,
	27	const PROV_CIPHER_HW *hw)
	28	{
	29	PROV_DES_CTX ctx = OPENSSL_zalloc(sizeof(ctx));
	30
	31	if (ctx != NULL)
	32	cipher_generic_initkey(ctx, kbits, blkbits, ivbits, mode, flags, hw,
	33	provctx);
	34	return ctx;
	35	}
	36
	37	static void des_freectx(void *vctx)
	38	{
	39	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
	40
	41	OPENSSL_clear_free(ctx, sizeof(*ctx));
	42	}
	43
	44	static int des_init(void vctx, const unsigned char key, size_t keylen,
	45	const unsigned char *iv, size_t ivlen, int enc)
	46	{
	47	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
	48
	49	ctx->enc = enc;
	50
	51	if (iv != NULL) {
	52	if (ivlen != ctx->ivlen) {
	53	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IVLEN);
	54	return 0;
	55	}
	56	memcpy(ctx->iv, iv, ivlen);
	57	}
	58
	59	if (key != NULL) {
	60	if (keylen != ctx->keylen) {
	61	ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEYLEN);
	62	return 0;
	63	}
	64	return ctx->hw->init(ctx, key, keylen);
	65	}
	66	return 1;
	67	}
	68
	69	static int des_einit(void vctx, const unsigned char key, size_t keylen,
	70	const unsigned char *iv, size_t ivlen)
	71	{
	72	return des_init(vctx, key, keylen, iv, ivlen, 1);
	73	}
	74
	75	static int des_dinit(void vctx, const unsigned char key, size_t keylen,
	76	const unsigned char *iv, size_t ivlen)
77	{
78	return des_init(vctx, key, keylen, iv, ivlen, 0);
79	}
80
81	static int des_generatekey(PROV_CIPHER_CTX ctx, void ptr)
82	{
83
84	DES_cblock *deskey = ptr;
85	size_t kl = ctx->keylen;
86
87	if (kl == 0 \|\| rand_priv_bytes_ex(ctx->libctx, ptr, kl) <= 0)
88	return 0;
89	DES_set_odd_parity(deskey);
90	return 1;
91	}
92
93	CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(des)
94	OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY, NULL, 0),
95	CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(des)
96
97	static int des_get_ctx_params(void *vctx, OSSL_PARAM params[])
98	{
99	PROV_CIPHER_CTX ctx = (PROV_CIPHER_CTX )vctx;
100	OSSL_PARAM *p;
101
102	if (!cipher_generic_get_ctx_params(vctx, params))
103	return 0;
104
105	p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_RANDOM_KEY);
106	if (p != NULL && !des_generatekey(ctx, p->data)) {
107	ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GENERATE_KEY);
108	return 0;
109	}
110	return 1;
111	}
112
113	#define IMPLEMENT_des_cipher(type, lcmode, UCMODE, flags, \
114	kbits, blkbits, ivbits, block) \
115	static OSSL_OP_cipher_newctx_fn type##_##lcmode##_newctx; \
116	static void des_##lcmode##_newctx(void provctx) \
117	{ \
118	return des_newctx(provctx, kbits, blkbits, ivbits, \
119	EVP_CIPH_##UCMODE##_MODE, flags, \
120	PROV_CIPHER_HW_des_##lcmode()); \
121	} \
122	static OSSL_OP_cipher_get_params_fn des_##lcmode##_get_params; \
123	static int des_##lcmode##_get_params(OSSL_PARAM params[]) \
124	{ \
125	return cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, flags, \
126	kbits, blkbits, ivbits); \
127	} \
128	const OSSL_DISPATCH des_##lcmode##_functions[] = { \
129	{ OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))des_einit }, \
130	{ OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))des_dinit }, \
131	{ OSSL_FUNC_CIPHER_UPDATE, \
132	(void (*)(void))cipher_generic_##block##_update }, \
133	{ OSSL_FUNC_CIPHER_FINAL, (void (*)(void))cipher_generic_##block##_final },\
134	{ OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))cipher_generic_cipher }, \
135	{ OSSL_FUNC_CIPHER_NEWCTX, \
136	(void (*)(void))des_##lcmode##_newctx }, \
137	{ OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))des_freectx }, \
138	{ OSSL_FUNC_CIPHER_GET_PARAMS, \
139	(void (*)(void))des_##lcmode##_get_params }, \
140	{ OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \
141	(void (*)(void))cipher_generic_gettable_params }, \
142	{ OSSL_FUNC_CIPHER_GET_CTX_PARAMS, (void (*)(void))des_get_ctx_params }, \
143	{ OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \
144	(void (*)(void))des_gettable_ctx_params }, \
145	{ OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \
146	(void (*)(void))cipher_generic_set_ctx_params }, \
147	{ OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \
148	(void (*)(void))cipher_generic_settable_ctx_params }, \
149	{ 0, NULL } \
150	}
151
152	/* des_ecb_functions */
153	IMPLEMENT_des_cipher(des, ecb, ECB, DES_FLAGS, 64, 64, 0, block);
154	/* des_cbc_functions */
155	IMPLEMENT_des_cipher(des, cbc, CBC, DES_FLAGS, 64, 64, 64, block);
156	/* des_ofb64_functions */
157	IMPLEMENT_des_cipher(des, ofb64, OFB, DES_FLAGS, 64, 8, 64, stream);
158	/* des_cfb64_functions */
159	IMPLEMENT_des_cipher(des, cfb64, CFB, DES_FLAGS, 64, 8, 64, stream);
160	/* des_cfb1_functions */
161	IMPLEMENT_des_cipher(des, cfb1, CFB, DES_FLAGS, 64, 8, 64, stream);
162	/* des_cfb8_functions */
163	IMPLEMENT_des_cipher(des, cfb8, CFB, DES_FLAGS, 64, 8, 64, stream);