2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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 #include "internal/cryptlib.h"
12 #ifndef OPENSSL_NO_DES
13 # include <openssl/evp.h>
14 # include <openssl/objects.h>
15 # include "internal/evp_int.h"
16 # include <openssl/des.h>
17 # include <openssl/rand.h>
18 # include <openssl/rand_drbg.h>
19 # include "evp_locl.h"
27 void (*cbc) (const void *, void *, size_t,
28 const DES_key_schedule *, unsigned char *);
32 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
33 /* ----------^^^ this is not a typo, just a way to detect that
34 * assembler support was in general requested... */
35 # include "sparc_arch.h"
37 extern unsigned int OPENSSL_sparcv9cap_P[];
39 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
41 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
42 void des_t4_cbc_encrypt(const void *inp, void *out, size_t len,
43 const DES_key_schedule *ks, unsigned char iv[8]);
44 void des_t4_cbc_decrypt(const void *inp, void *out, size_t len,
45 const DES_key_schedule *ks, unsigned char iv[8]);
48 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
49 const unsigned char *iv, int enc);
50 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
53 * Because of various casts and different names can't use
54 * IMPLEMENT_BLOCK_CIPHER
57 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
58 const unsigned char *in, size_t inl)
60 BLOCK_CIPHER_ecb_loop()
61 DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i),
62 EVP_CIPHER_CTX_get_cipher_data(ctx),
63 EVP_CIPHER_CTX_encrypting(ctx));
67 static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
68 const unsigned char *in, size_t inl)
70 while (inl >= EVP_MAXCHUNK) {
71 int num = EVP_CIPHER_CTX_num(ctx);
72 DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
73 EVP_CIPHER_CTX_get_cipher_data(ctx),
74 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num);
75 EVP_CIPHER_CTX_set_num(ctx, num);
81 int num = EVP_CIPHER_CTX_num(ctx);
82 DES_ofb64_encrypt(in, out, (long)inl,
83 EVP_CIPHER_CTX_get_cipher_data(ctx),
84 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num);
85 EVP_CIPHER_CTX_set_num(ctx, num);
90 static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
91 const unsigned char *in, size_t inl)
93 EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_get_cipher_data(ctx);
95 if (dat->stream.cbc != NULL) {
96 (*dat->stream.cbc) (in, out, inl, &dat->ks.ks,
97 EVP_CIPHER_CTX_iv_noconst(ctx));
100 while (inl >= EVP_MAXCHUNK) {
101 DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK,
102 EVP_CIPHER_CTX_get_cipher_data(ctx),
103 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
104 EVP_CIPHER_CTX_encrypting(ctx));
110 DES_ncbc_encrypt(in, out, (long)inl,
111 EVP_CIPHER_CTX_get_cipher_data(ctx),
112 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
113 EVP_CIPHER_CTX_encrypting(ctx));
117 static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
118 const unsigned char *in, size_t inl)
120 while (inl >= EVP_MAXCHUNK) {
121 int num = EVP_CIPHER_CTX_num(ctx);
122 DES_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
123 EVP_CIPHER_CTX_get_cipher_data(ctx),
124 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num,
125 EVP_CIPHER_CTX_encrypting(ctx));
126 EVP_CIPHER_CTX_set_num(ctx, num);
132 int num = EVP_CIPHER_CTX_num(ctx);
133 DES_cfb64_encrypt(in, out, (long)inl,
134 EVP_CIPHER_CTX_get_cipher_data(ctx),
135 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num,
136 EVP_CIPHER_CTX_encrypting(ctx));
137 EVP_CIPHER_CTX_set_num(ctx, num);
143 * Although we have a CFB-r implementation for DES, it doesn't pack the right
144 * way, so wrap it here
146 static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
147 const unsigned char *in, size_t inl)
149 size_t n, chunk = EVP_MAXCHUNK / 8;
150 unsigned char c[1], d[1];
155 while (inl && inl >= chunk) {
156 for (n = 0; n < chunk * 8; ++n) {
157 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
158 DES_cfb_encrypt(c, d, 1, 1, EVP_CIPHER_CTX_get_cipher_data(ctx),
159 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
160 EVP_CIPHER_CTX_encrypting(ctx));
162 (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8))) |
163 ((d[0] & 0x80) >> (unsigned int)(n % 8));
175 static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
176 const unsigned char *in, size_t inl)
178 while (inl >= EVP_MAXCHUNK) {
179 DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
180 EVP_CIPHER_CTX_get_cipher_data(ctx),
181 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
182 EVP_CIPHER_CTX_encrypting(ctx));
188 DES_cfb_encrypt(in, out, 8, (long)inl,
189 EVP_CIPHER_CTX_get_cipher_data(ctx),
190 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
191 EVP_CIPHER_CTX_encrypting(ctx));
195 BLOCK_CIPHER_defs(des, EVP_DES_KEY, NID_des, 8, 8, 8, 64,
196 EVP_CIPH_RAND_KEY, des_init_key, NULL,
197 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
199 BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 1,
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, 8,
204 EVP_CIPH_RAND_KEY, des_init_key, NULL,
205 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
207 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
208 const unsigned char *iv, int enc)
210 DES_cblock *deskey = (DES_cblock *)key;
211 EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_get_cipher_data(ctx);
213 dat->stream.cbc = NULL;
214 # if defined(SPARC_DES_CAPABLE)
215 if (SPARC_DES_CAPABLE) {
216 int mode = EVP_CIPHER_CTX_mode(ctx);
218 if (mode == EVP_CIPH_CBC_MODE) {
219 des_t4_key_expand(key, &dat->ks.ks);
220 dat->stream.cbc = enc ? des_t4_cbc_encrypt : des_t4_cbc_decrypt;
225 DES_set_key_unchecked(deskey, EVP_CIPHER_CTX_get_cipher_data(ctx));
229 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
233 case EVP_CTRL_RAND_KEY:
234 if (c->drbg != NULL) {
235 if (RAND_DRBG_bytes(c->drbg, ptr, 8) == 0)
237 } else if (RAND_bytes(ptr, 8) <= 0) {
240 DES_set_odd_parity((DES_cblock *)ptr);