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>
25 void (*cbc) (const void *, void *, size_t,
26 const DES_key_schedule *, unsigned char *);
30 # if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__))
31 /* ----------^^^ this is not a typo, just a way to detect that
32 * assembler support was in general requested... */
33 # include "sparc_arch.h"
35 extern unsigned int OPENSSL_sparcv9cap_P[];
37 # define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES)
39 void des_t4_key_expand(const void *key, DES_key_schedule *ks);
40 void des_t4_cbc_encrypt(const void *inp, void *out, size_t len,
41 const DES_key_schedule *ks, unsigned char iv[8]);
42 void des_t4_cbc_decrypt(const void *inp, void *out, size_t len,
43 const DES_key_schedule *ks, unsigned char iv[8]);
46 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
47 const unsigned char *iv, int enc);
48 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
51 * Because of various casts and different names can't use
52 * IMPLEMENT_BLOCK_CIPHER
55 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
56 const unsigned char *in, size_t inl)
58 BLOCK_CIPHER_ecb_loop()
59 DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i),
60 EVP_CIPHER_CTX_get_cipher_data(ctx),
61 EVP_CIPHER_CTX_encrypting(ctx));
65 static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
66 const unsigned char *in, size_t inl)
68 while (inl >= EVP_MAXCHUNK) {
69 int num = EVP_CIPHER_CTX_num(ctx);
70 DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
71 EVP_CIPHER_CTX_get_cipher_data(ctx),
72 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num);
73 EVP_CIPHER_CTX_set_num(ctx, num);
79 int num = EVP_CIPHER_CTX_num(ctx);
80 DES_ofb64_encrypt(in, out, (long)inl,
81 EVP_CIPHER_CTX_get_cipher_data(ctx),
82 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num);
83 EVP_CIPHER_CTX_set_num(ctx, num);
88 static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
89 const unsigned char *in, size_t inl)
91 EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_get_cipher_data(ctx);
93 if (dat->stream.cbc != NULL) {
94 (*dat->stream.cbc) (in, out, inl, &dat->ks.ks,
95 EVP_CIPHER_CTX_iv_noconst(ctx));
98 while (inl >= EVP_MAXCHUNK) {
99 DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK,
100 EVP_CIPHER_CTX_get_cipher_data(ctx),
101 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
102 EVP_CIPHER_CTX_encrypting(ctx));
108 DES_ncbc_encrypt(in, out, (long)inl,
109 EVP_CIPHER_CTX_get_cipher_data(ctx),
110 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
111 EVP_CIPHER_CTX_encrypting(ctx));
115 static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
116 const unsigned char *in, size_t inl)
118 while (inl >= EVP_MAXCHUNK) {
119 int num = EVP_CIPHER_CTX_num(ctx);
120 DES_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
121 EVP_CIPHER_CTX_get_cipher_data(ctx),
122 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num,
123 EVP_CIPHER_CTX_encrypting(ctx));
124 EVP_CIPHER_CTX_set_num(ctx, num);
130 int num = EVP_CIPHER_CTX_num(ctx);
131 DES_cfb64_encrypt(in, out, (long)inl,
132 EVP_CIPHER_CTX_get_cipher_data(ctx),
133 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), &num,
134 EVP_CIPHER_CTX_encrypting(ctx));
135 EVP_CIPHER_CTX_set_num(ctx, num);
141 * Although we have a CFB-r implementation for DES, it doesn't pack the right
142 * way, so wrap it here
144 static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
145 const unsigned char *in, size_t inl)
147 size_t n, chunk = EVP_MAXCHUNK / 8;
148 unsigned char c[1], d[1];
153 while (inl && inl >= chunk) {
154 for (n = 0; n < chunk * 8; ++n) {
155 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
156 DES_cfb_encrypt(c, d, 1, 1, EVP_CIPHER_CTX_get_cipher_data(ctx),
157 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
158 EVP_CIPHER_CTX_encrypting(ctx));
160 (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8))) |
161 ((d[0] & 0x80) >> (unsigned int)(n % 8));
173 static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
174 const unsigned char *in, size_t inl)
176 while (inl >= EVP_MAXCHUNK) {
177 DES_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK,
178 EVP_CIPHER_CTX_get_cipher_data(ctx),
179 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
180 EVP_CIPHER_CTX_encrypting(ctx));
186 DES_cfb_encrypt(in, out, 8, (long)inl,
187 EVP_CIPHER_CTX_get_cipher_data(ctx),
188 (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx),
189 EVP_CIPHER_CTX_encrypting(ctx));
193 BLOCK_CIPHER_defs(des, EVP_DES_KEY, NID_des, 8, 8, 8, 64,
194 EVP_CIPH_RAND_KEY, des_init_key, NULL,
195 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
197 BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 1,
198 EVP_CIPH_RAND_KEY, des_init_key, NULL,
199 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
201 BLOCK_CIPHER_def_cfb(des, EVP_DES_KEY, NID_des, 8, 8, 8,
202 EVP_CIPH_RAND_KEY, des_init_key, NULL,
203 EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, des_ctrl)
205 static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
206 const unsigned char *iv, int enc)
208 DES_cblock *deskey = (DES_cblock *)key;
209 EVP_DES_KEY *dat = (EVP_DES_KEY *) EVP_CIPHER_CTX_get_cipher_data(ctx);
211 dat->stream.cbc = NULL;
212 # if defined(SPARC_DES_CAPABLE)
213 if (SPARC_DES_CAPABLE) {
214 int mode = EVP_CIPHER_CTX_mode(ctx);
216 if (mode == EVP_CIPH_CBC_MODE) {
217 des_t4_key_expand(key, &dat->ks.ks);
218 dat->stream.cbc = enc ? des_t4_cbc_encrypt : des_t4_cbc_decrypt;
223 DES_set_key_unchecked(deskey, EVP_CIPHER_CTX_get_cipher_data(ctx));
227 static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
231 case EVP_CTRL_RAND_KEY:
232 if (RAND_bytes(ptr, 8) <= 0)
234 DES_set_odd_parity((DES_cblock *)ptr);