* [including the GNU Public Licence.]
*/
-#ifndef 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_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
- unsigned char *iv,int enc);
+static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
/* Because of various casts and different names can't use IMPLEMENT_BLOCK_CIPHER */
-static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, unsigned char *in, unsigned int inl)
+static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
{
BLOCK_CIPHER_ecb_loop()
- des_ecb_encrypt((des_cblock *)(in + i), (des_cblock *)(out + i), ctx->c.des_ks, ctx->encrypt);
+ DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i), ctx->cipher_data, ctx->encrypt);
return 1;
}
-static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, unsigned char *in, unsigned int inl)
+static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
{
- des_ofb64_encrypt(in, out, (long)inl, ctx->c.des_ks, (des_cblock *)ctx->iv, &ctx->num);
+ while(inl>=EVP_MAXCHUNK)
+ {
+ DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
+ (DES_cblock *)ctx->iv, &ctx->num);
+ inl-=EVP_MAXCHUNK;
+ in +=EVP_MAXCHUNK;
+ out+=EVP_MAXCHUNK;
+ }
+ if (inl)
+ DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data,
+ (DES_cblock *)ctx->iv, &ctx->num);
return 1;
}
-static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, unsigned char *in, unsigned int inl)
+static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
{
- des_ncbc_encrypt(in, out, (long)inl, ctx->c.des_ks, (des_cblock *)ctx->iv, ctx->encrypt);
+ while(inl>=EVP_MAXCHUNK)
+ {
+ DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
+ (DES_cblock *)ctx->iv, ctx->encrypt);
+ inl-=EVP_MAXCHUNK;
+ in +=EVP_MAXCHUNK;
+ out+=EVP_MAXCHUNK;
+ }
+ if (inl)
+ DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data,
+ (DES_cblock *)ctx->iv, ctx->encrypt);
return 1;
}
-static int des_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, unsigned char *in, unsigned int inl)
+static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
{
- des_cfb64_encrypt(in, out, (long)inl, ctx->c.des_ks, (des_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
+ while(inl>=EVP_MAXCHUNK)
+ {
+ DES_cfb64_encrypt(in,out, (long)EVP_MAXCHUNK, ctx->cipher_data,
+ (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
+ inl-=EVP_MAXCHUNK;
+ in +=EVP_MAXCHUNK;
+ out+=EVP_MAXCHUNK;
+ }
+ if (inl)
+ DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
+ (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
return 1;
}
-BLOCK_CIPHER_defs(des, des_ks, NID_des, 8, 8, 8,
- 0, des_init_key, NULL,
+/* Although we have a CFB-r implementation for DES, it doesn't pack the right
+ way, so wrap it here */
+static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+ {
+ size_t n,chunk=EVP_MAXCHUNK/8;
+ unsigned char c[1],d[1];
+
+ if (inl<chunk) chunk=inl;
+
+ while (inl && inl>=chunk)
+ {
+ for(n=0 ; n < chunk*8; ++n)
+ {
+ c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
+ DES_cfb_encrypt(c,d,1,1,ctx->cipher_data,(DES_cblock *)ctx->iv,
+ ctx->encrypt);
+ out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8));
+ }
+ inl-=chunk;
+ in +=chunk;
+ out+=chunk;
+ if (inl<chunk) chunk=inl;
+ }
+
+ return 1;
+ }
+
+static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
+ {
+ while (inl>=EVP_MAXCHUNK)
+ {
+ DES_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,ctx->cipher_data,
+ (DES_cblock *)ctx->iv,ctx->encrypt);
+ inl-=EVP_MAXCHUNK;
+ in +=EVP_MAXCHUNK;
+ out+=EVP_MAXCHUNK;
+ }
+ if (inl)
+ DES_cfb_encrypt(in,out,8,(long)inl,ctx->cipher_data,
+ (DES_cblock *)ctx->iv,ctx->encrypt);
+ return 1;
+ }
+
+BLOCK_CIPHER_defs(des, DES_key_schedule, NID_des, 8, 8, 8, 64,
+ EVP_CIPH_RAND_KEY, des_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
- NULL)
+ des_ctrl)
+BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,1,
+ EVP_CIPH_RAND_KEY, des_init_key,NULL,
+ EVP_CIPHER_set_asn1_iv,
+ EVP_CIPHER_get_asn1_iv,des_ctrl)
-static int des_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
- unsigned char *iv, int enc)
- {
- des_cblock *deskey = (des_cblock *)key;
+BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,8,
+ EVP_CIPH_RAND_KEY,des_init_key,NULL,
+ EVP_CIPHER_set_asn1_iv,
+ EVP_CIPHER_get_asn1_iv,des_ctrl)
- des_set_key_unchecked(deskey,ctx->c.des_ks);
+static int des_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+ {
+ DES_cblock *deskey = (DES_cblock *)key;
+#ifdef EVP_CHECK_DES_KEY
+ if(DES_set_key_checked(deskey,ctx->cipher_data) != 0)
+ return 0;
+#else
+ DES_set_key_unchecked(deskey,ctx->cipher_data);
+#endif
return 1;
}
+static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+ {
+
+ switch(type)
+ {
+ case EVP_CTRL_RAND_KEY:
+ if (RAND_bytes(ptr, 8) <= 0)
+ return 0;
+ DES_set_odd_parity((DES_cblock *)ptr);
+ return 1;
+
+ default:
+ return -1;
+ }
+ }
+
#endif
projects / openssl.git / blobdiff