* [including the GNU Public Licence.]
*/
-#ifndef OPENSSL_NO_DES
#include <stdio.h>
#include "cryptlib.h"
+#ifndef OPENSSL_NO_DES
#include <openssl/evp.h>
#include <openssl/objects.h>
#include "evp_locl.h"
+#include <openssl/des.h>
+#include <openssl/rand.h>
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv,int enc);
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv,int enc);
+static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
+
+typedef struct
+ {
+ DES_key_schedule ks1;/* key schedule */
+ DES_key_schedule ks2;/* key schedule (for ede) */
+ DES_key_schedule ks3;/* key schedule (for ede3) */
+ } DES_EDE_KEY;
+
+#define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
+
/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
+ const unsigned char *in, size_t inl)
{
BLOCK_CIPHER_ecb_loop()
- des_ecb3_encrypt((des_cblock *)(in + i), (des_cblock *)(out + i),
- ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
- ctx->encrypt);
+ DES_ecb3_encrypt((const_DES_cblock *)(in + i),
+ (DES_cblock *)(out + i),
+ &data(ctx)->ks1, &data(ctx)->ks2,
+ &data(ctx)->ks3,
+ ctx->encrypt);
return 1;
}
static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
+ const unsigned char *in, size_t inl)
{
- des_ede3_ofb64_encrypt(in, out, (long)inl,
- ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
- (des_cblock *)ctx->iv, &ctx->num);
+ if (inl>=EVP_MAXCHUNK)
+ {
+ DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
+ &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+ (DES_cblock *)ctx->iv, &ctx->num);
+ inl-=EVP_MAXCHUNK;
+ in +=EVP_MAXCHUNK;
+ out+=EVP_MAXCHUNK;
+ }
+ if (inl)
+ DES_ede3_ofb64_encrypt(in, out, (long)inl,
+ &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+ (DES_cblock *)ctx->iv, &ctx->num);
+
return 1;
}
static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
+ const unsigned char *in, size_t inl)
{
#ifdef KSSL_DEBUG
{
printf("\n");
}
#endif /* KSSL_DEBUG */
- des_ede3_cbc_encrypt(in, out, (long)inl,
- ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
- (des_cblock *)ctx->iv, ctx->encrypt);
+ if (inl>=EVP_MAXCHUNK)
+ {
+ DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
+ &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+ (DES_cblock *)ctx->iv, ctx->encrypt);
+ inl-=EVP_MAXCHUNK;
+ in +=EVP_MAXCHUNK;
+ out+=EVP_MAXCHUNK;
+ }
+ if (inl)
+ DES_ede3_cbc_encrypt(in, out, (long)inl,
+ &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+ (DES_cblock *)ctx->iv, ctx->encrypt);
return 1;
}
-static int des_ede_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
+static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
{
- des_ede3_cfb64_encrypt(in, out, (long)inl,
- ctx->c.des_ede.ks1, ctx->c.des_ede.ks2, ctx->c.des_ede.ks3,
- (des_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
+ if (inl>=EVP_MAXCHUNK)
+ {
+ DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK,
+ &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+ (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
+ inl-=EVP_MAXCHUNK;
+ in +=EVP_MAXCHUNK;
+ out+=EVP_MAXCHUNK;
+ }
+ if (inl)
+ DES_ede3_cfb64_encrypt(in, out, (long)inl,
+ &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+ (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
return 1;
}
-BLOCK_CIPHER_defs(des_ede, des_ede, NID_des_ede, 8, 16, 8,
- 0, des_ede_init_key, NULL,
+/* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
+ way, so wrap it here */
+static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+ {
+ size_t n;
+ unsigned char c[1],d[1];
+
+ for(n=0 ; n < inl ; ++n)
+ {
+ c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
+ DES_ede3_cfb_encrypt(c,d,1,1,
+ &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
+ (DES_cblock *)ctx->iv,ctx->encrypt);
+ out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8));
+ }
+
+ return 1;
+ }
+
+static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+ {
+ while (inl>=EVP_MAXCHUNK)
+ {
+ DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
+ &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
+ (DES_cblock *)ctx->iv,ctx->encrypt);
+ inl-=EVP_MAXCHUNK;
+ in +=EVP_MAXCHUNK;
+ out+=EVP_MAXCHUNK;
+ }
+ if (inl)
+ DES_ede3_cfb_encrypt(in,out,8,(long)inl,
+ &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
+ (DES_cblock *)ctx->iv,ctx->encrypt);
+ return 1;
+ }
+
+BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
+ EVP_CIPH_RAND_KEY, des_ede_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
- NULL)
+ des3_ctrl)
-#define des_ede3_cfb_cipher des_ede_cfb_cipher
+#define des_ede3_cfb64_cipher des_ede_cfb64_cipher
#define des_ede3_ofb_cipher des_ede_ofb_cipher
#define des_ede3_cbc_cipher des_ede_cbc_cipher
#define des_ede3_ecb_cipher des_ede_ecb_cipher
-BLOCK_CIPHER_defs(des_ede3, des_ede, NID_des_ede3, 8, 24, 8,
- 0, des_ede3_init_key, NULL,
+BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
+ EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
- NULL)
+ des3_ctrl)
+
+BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
+ EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
+ EVP_CIPHER_set_asn1_iv,
+ EVP_CIPHER_get_asn1_iv,
+ des3_ctrl)
+
+BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
+ EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL,
+ EVP_CIPHER_set_asn1_iv,
+ EVP_CIPHER_get_asn1_iv,
+ des3_ctrl)
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
- des_cblock *deskey = (des_cblock *)key;
-
- des_set_key_unchecked(&deskey[0],ctx->c.des_ede.ks1);
- des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2);
- memcpy( (char *)ctx->c.des_ede.ks3,
- (char *)ctx->c.des_ede.ks1,
- sizeof(ctx->c.des_ede.ks1));
+ DES_cblock *deskey = (DES_cblock *)key;
+#ifdef EVP_CHECK_DES_KEY
+ if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
+ !! DES_set_key_checked(&deskey[1],&data(ctx)->ks2))
+ return 0;
+#else
+ DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
+ DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
+#endif
+ memcpy(&data(ctx)->ks3,&data(ctx)->ks1,
+ sizeof(data(ctx)->ks1));
return 1;
}
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
- des_cblock *deskey = (des_cblock *)key;
+ DES_cblock *deskey = (DES_cblock *)key;
#ifdef KSSL_DEBUG
{
int i;
}
#endif /* KSSL_DEBUG */
- des_set_key_unchecked(&deskey[0],ctx->c.des_ede.ks1);
- des_set_key_unchecked(&deskey[1],ctx->c.des_ede.ks2);
- des_set_key_unchecked(&deskey[2],ctx->c.des_ede.ks3);
-
+#ifdef EVP_CHECK_DES_KEY
+ if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1)
+ || DES_set_key_checked(&deskey[1],&data(ctx)->ks2)
+ || DES_set_key_checked(&deskey[2],&data(ctx)->ks3))
+ return 0;
+#else
+ DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
+ DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
+ DES_set_key_unchecked(&deskey[2],&data(ctx)->ks3);
+#endif
return 1;
}
+static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+ {
+
+ DES_cblock *deskey = ptr;
+
+ switch(type)
+ {
+ case EVP_CTRL_RAND_KEY:
+ if (RAND_bytes(ptr, c->key_len) <= 0)
+ return 0;
+ DES_set_odd_parity(deskey);
+ if (c->key_len >= 16)
+ DES_set_odd_parity(deskey + 1);
+ if (c->key_len >= 24)
+ DES_set_odd_parity(deskey + 2);
+ return 1;
+
+ default:
+ return -1;
+ }
+ }
+
const EVP_CIPHER *EVP_des_ede(void)
{
return &des_ede_ecb;
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