1 /*
2 * Copyright 1995-2021 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 /*
11 * DES low level APIs are deprecated for public use, but still ok for internal
12 * use.
13 */
14 #include "internal/deprecated.h"
15
16 #include "cipher_tdes_default.h"
17
18 #define ks1 tks.ks[0]
19 #define ks2 tks.ks[1]
20 #define ks3 tks.ks[2]
21
ossl_cipher_hw_tdes_ede2_initkey(PROV_CIPHER_CTX * ctx,const unsigned char * key,size_t keylen)22 static int ossl_cipher_hw_tdes_ede2_initkey(PROV_CIPHER_CTX *ctx,
23 const unsigned char *key,
24 size_t keylen)
25 {
26 PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
27 DES_cblock *deskey = (DES_cblock *)key;
28
29 tctx->tstream.cbc = NULL;
30 # if defined(SPARC_DES_CAPABLE)
31 if (SPARC_DES_CAPABLE) {
32 if (ctx->mode == EVP_CIPH_CBC_MODE) {
33 des_t4_key_expand(&deskey[0], &tctx->ks1);
34 des_t4_key_expand(&deskey[1], &tctx->ks2);
35 memcpy(&tctx->ks3, &tctx->ks1, sizeof(tctx->ks1));
36 tctx->tstream.cbc = ctx->enc ? des_t4_ede3_cbc_encrypt :
37 des_t4_ede3_cbc_decrypt;
38 return 1;
39 }
40 }
41 # endif
42 DES_set_key_unchecked(&deskey[0], &tctx->ks1);
43 DES_set_key_unchecked(&deskey[1], &tctx->ks2);
44 memcpy(&tctx->ks3, &tctx->ks1, sizeof(tctx->ks1));
45 return 1;
46 }
47
ossl_cipher_hw_tdes_ofb(PROV_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,size_t inl)48 static int ossl_cipher_hw_tdes_ofb(PROV_CIPHER_CTX *ctx, unsigned char *out,
49 const unsigned char *in, size_t inl)
50 {
51 PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
52 int num = ctx->num;
53
54 while (inl >= MAXCHUNK) {
55 DES_ede3_ofb64_encrypt(in, out, (long)MAXCHUNK, &tctx->ks1, &tctx->ks2,
56 &tctx->ks3, (DES_cblock *)ctx->iv, &num);
57 inl -= MAXCHUNK;
58 in += MAXCHUNK;
59 out += MAXCHUNK;
60 }
61 if (inl > 0) {
62 DES_ede3_ofb64_encrypt(in, out, (long)inl, &tctx->ks1, &tctx->ks2,
63 &tctx->ks3, (DES_cblock *)ctx->iv, &num);
64 }
65 ctx->num = num;
66 return 1;
67 }
68
ossl_cipher_hw_tdes_cfb(PROV_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,size_t inl)69 static int ossl_cipher_hw_tdes_cfb(PROV_CIPHER_CTX *ctx, unsigned char *out,
70 const unsigned char *in, size_t inl)
71 {
72 PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
73 int num = ctx->num;
74
75 while (inl >= MAXCHUNK) {
76
77 DES_ede3_cfb64_encrypt(in, out, (long)MAXCHUNK,
78 &tctx->ks1, &tctx->ks2, &tctx->ks3,
79 (DES_cblock *)ctx->iv, &num, ctx->enc);
80 inl -= MAXCHUNK;
81 in += MAXCHUNK;
82 out += MAXCHUNK;
83 }
84 if (inl > 0) {
85 DES_ede3_cfb64_encrypt(in, out, (long)inl,
86 &tctx->ks1, &tctx->ks2, &tctx->ks3,
87 (DES_cblock *)ctx->iv, &num, ctx->enc);
88 }
89 ctx->num = num;
90 return 1;
91 }
92
93 /*
94 * Although we have a CFB-r implementation for 3-DES, it doesn't pack the
95 * right way, so wrap it here
96 */
ossl_cipher_hw_tdes_cfb1(PROV_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,size_t inl)97 static int ossl_cipher_hw_tdes_cfb1(PROV_CIPHER_CTX *ctx, unsigned char *out,
98 const unsigned char *in, size_t inl)
99 {
100 PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
101 size_t n;
102 unsigned char c[1];
103 unsigned char d[1] = { 0 };
104
105 if (ctx->use_bits == 0)
106 inl *= 8;
107 for (n = 0; n < inl; ++n) {
108 c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0;
109 DES_ede3_cfb_encrypt(c, d, 1, 1,
110 &tctx->ks1, &tctx->ks2, &tctx->ks3,
111 (DES_cblock *)ctx->iv, ctx->enc);
112 out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8)))
113 | ((d[0] & 0x80) >> (unsigned int)(n % 8));
114 }
115
116 return 1;
117 }
118
ossl_cipher_hw_tdes_cfb8(PROV_CIPHER_CTX * ctx,unsigned char * out,const unsigned char * in,size_t inl)119 static int ossl_cipher_hw_tdes_cfb8(PROV_CIPHER_CTX *ctx, unsigned char *out,
120 const unsigned char *in, size_t inl)
121 {
122 PROV_TDES_CTX *tctx = (PROV_TDES_CTX *)ctx;
123
124 while (inl >= MAXCHUNK) {
125 DES_ede3_cfb_encrypt(in, out, 8, (long)MAXCHUNK,
126 &tctx->ks1, &tctx->ks2, &tctx->ks3,
127 (DES_cblock *)ctx->iv, ctx->enc);
128 inl -= MAXCHUNK;
129 in += MAXCHUNK;
130 out += MAXCHUNK;
131 }
132 if (inl > 0)
133 DES_ede3_cfb_encrypt(in, out, 8, (long)inl,
134 &tctx->ks1, &tctx->ks2, &tctx->ks3,
135 (DES_cblock *)ctx->iv, ctx->enc);
136 return 1;
137 }
138
139 PROV_CIPHER_HW_tdes_mode(ede3, ofb)
140 PROV_CIPHER_HW_tdes_mode(ede3, cfb)
141 PROV_CIPHER_HW_tdes_mode(ede3, cfb1)
142 PROV_CIPHER_HW_tdes_mode(ede3, cfb8)
143
144 PROV_CIPHER_HW_tdes_mode(ede2, ecb)
145 PROV_CIPHER_HW_tdes_mode(ede2, cbc)
146 PROV_CIPHER_HW_tdes_mode(ede2, ofb)
147 PROV_CIPHER_HW_tdes_mode(ede2, cfb)
148
149
