2 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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
11 * DES low level APIs are deprecated for public use, but still ok for internal
14 #include "internal/deprecated.h"
17 #include "internal/cryptlib.h"
18 #ifndef OPENSSL_NO_DES
19 # include <openssl/evp.h>
20 # include <openssl/objects.h>
21 # include "crypto/evp.h"
22 # include <openssl/des.h>
23 # include <openssl/rand.h>
31 void (*cbc) (const void *, void *, size_t,
32 const DES_key_schedule *, unsigned char *);
36 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
37 /* ----------^^^ this is not a typo, just a way to detect that
38 * assembler support was in general requested... */
39 # include "sparc_arch.h"
41 extern unsigned int OPENSSL_sparcv9cap_P[];
43 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
45 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
46 void des_t4_cbc_encrypt(const void *inp, void *out, size_t len,
47 const DES_key_schedule *ks, unsigned char iv[8]);
48 void des_t4_cbc_decrypt(const void *inp, void *out, size_t len,
49 const DES_key_schedule *ks, unsigned char iv[8]);
52 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
53 const unsigned char *iv, int enc);
54 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
57 * Because of various casts and different names can't use
58 * IMPLEMENT_BLOCK_CIPHER
61 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
62 const unsigned char *in, size_t inl)
64 BLOCK_CIPHER_ecb_loop()
65 DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i),
66 EVP_CIPHER_CTX_get_cipher_data(ctx),
67 EVP_CIPHER_CTX_encrypting(ctx));
71 static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
72 const unsigned char *in, size_t inl)
74 while (inl >= EVP_MAXCHUNK) {
75 int num = EVP_CIPHER_CTX_num(ctx);
76 DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
77 EVP_CIPHER_CTX_get_cipher_data(ctx),
78 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num);
79 EVP_CIPHER_CTX_set_num(ctx, num);
85 int num = EVP_CIPHER_CTX_num(ctx);
86 DES_ofb64_encrypt(in, out, (long)inl,
87 EVP_CIPHER_CTX_get_cipher_data(ctx),
88 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num);
89 EVP_CIPHER_CTX_set_num(ctx, num);
94 static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
95 const unsigned char *in, size_t inl)
97 EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_get_cipher_data(ctx);
99 if (dat->stream.cbc != NULL) {
100 (*dat->stream.cbc) (in, out, inl, &dat->ks.ks,
101 EVP_CIPHER_CTX_iv_noconst(ctx));
104 while (inl >= EVP_MAXCHUNK) {
105 DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK,
106 EVP_CIPHER_CTX_get_cipher_data(ctx),
107 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
108 EVP_CIPHER_CTX_encrypting(ctx));
114 DES_ncbc_encrypt(in, out, (long)inl,
115 EVP_CIPHER_CTX_get_cipher_data(ctx),
116 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
117 EVP_CIPHER_CTX_encrypting(ctx));
121 static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
122 const unsigned char *in, size_t inl)
124 while (inl >= EVP_MAXCHUNK) {
125 int num = EVP_CIPHER_CTX_num(ctx);
126 DES_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
127 EVP_CIPHER_CTX_get_cipher_data(ctx),
128 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num,
129 EVP_CIPHER_CTX_encrypting(ctx));
130 EVP_CIPHER_CTX_set_num(ctx, num);
136 int num = EVP_CIPHER_CTX_num(ctx);
137 DES_cfb64_encrypt(in, out, (long)inl,
138 EVP_CIPHER_CTX_get_cipher_data(ctx),
139 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num,
140 EVP_CIPHER_CTX_encrypting(ctx));
141 EVP_CIPHER_CTX_set_num(ctx, num);
147 * Although we have a CFB-r implementation for DES, it doesn't pack the right
148 * way, so wrap it here
150 static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
151 const unsigned char *in, size_t inl)
153 size_t n, chunk = EVP_MAXCHUNK / 8;
154 unsigned char c[1], d[1];
159 while (inl && inl >= chunk) {
160 for (n = 0; n < chunk * 8; ++n) {
161 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
162 DES_cfb_encrypt(c, d, 1, 1, EVP_CIPHER_CTX_get_cipher_data(ctx),
163 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
164 EVP_CIPHER_CTX_encrypting(ctx));
166 (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8))) |
167 ((d[0] & 0x80) >> (unsigned int)(n % 8));
179 static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
180 const unsigned char *in, size_t inl)
182 while (inl >= EVP_MAXCHUNK) {
183 DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
184 EVP_CIPHER_CTX_get_cipher_data(ctx),
185 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
186 EVP_CIPHER_CTX_encrypting(ctx));
192 DES_cfb_encrypt(in, out, 8, (long)inl,
193 EVP_CIPHER_CTX_get_cipher_data(ctx),
194 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
195 EVP_CIPHER_CTX_encrypting(ctx));
199 BLOCK_CIPHER_defs(des, EVP_DES_KEY, NID_des, 8, 8, 8, 64,
200 EVP_CIPH_RAND_KEY, des_init_key, NULL,
201 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
203 BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 1,
204 EVP_CIPH_RAND_KEY, des_init_key, NULL,
205 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
207 BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 8,
208 EVP_CIPH_RAND_KEY, des_init_key, NULL,
209 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
211 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
212 const unsigned char *iv, int enc)
214 DES_cblock *deskey = (DES_cblock *)key;
215 EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_get_cipher_data(ctx);
217 dat->stream.cbc = NULL;
218 # if defined(SPARC_DES_CAPABLE)
219 if (SPARC_DES_CAPABLE) {
220 int mode = EVP_CIPHER_CTX_mode(ctx);
222 if (mode == EVP_CIPH_CBC_MODE) {
223 des_t4_key_expand(key, &dat->ks.ks);
224 dat->stream.cbc = enc ? des_t4_cbc_encrypt : des_t4_cbc_decrypt;
229 DES_set_key_unchecked(deskey, EVP_CIPHER_CTX_get_cipher_data(ctx));
233 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
237 case EVP_CTRL_RAND_KEY:
238 if (RAND_priv_bytes(ptr, 8) <= 0)
240 DES_set_odd_parity((DES_cblock *)ptr);