aboutsummaryrefslogtreecommitdiffstats
path: root/crypto/evp/e_des.c
diff options
context:
space:
mode:
Diffstat (limited to 'crypto/evp/e_des.c')
-rw-r--r--crypto/evp/e_des.c261
1 files changed, 130 insertions, 131 deletions
diff --git a/crypto/evp/e_des.c b/crypto/evp/e_des.c
index ca009f2c5250..ea1a4c422879 100644
--- a/crypto/evp/e_des.c
+++ b/crypto/evp/e_des.c
@@ -5,21 +5,21 @@
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
- *
+ *
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
+ *
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
@@ -34,10 +34,10 @@
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
+ * 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
+ *
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -49,7 +49,7 @@
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
- *
+ *
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
@@ -59,166 +59,165 @@
#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>
+# 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, const unsigned char *key,
- const unsigned char *iv, int enc);
+ 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 */
+/*
+ * 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,
- const unsigned char *in, size_t inl)
+ const unsigned char *in, size_t inl)
{
- BLOCK_CIPHER_ecb_loop()
- DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i), ctx->cipher_data, ctx->encrypt);
- return 1;
+ BLOCK_CIPHER_ecb_loop()
+ 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,
- const unsigned char *in, size_t inl)
+ const unsigned char *in, size_t inl)
{
- 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;
+ 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,
- const unsigned char *in, size_t inl)
+ const unsigned char *in, size_t inl)
{
- 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;
+ 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_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, size_t inl)
+ const unsigned char *in, size_t inl)
{
- 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;
+ 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;
}
-/* Although we have a CFB-r implementation for DES, it doesn't pack the right
- way, so wrap it here */
+/*
+ * 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 >> (unsigned int)(n%8))) |
- ((d[0]&0x80) >> (unsigned int)(n%8));
- }
- inl-=chunk;
- in +=chunk;
- out+=chunk;
- if (inl<chunk) chunk=inl;
- }
+ 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 >> (unsigned int)(n % 8))) |
+ ((d[0] & 0x80) >> (unsigned int)(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;
- }
+ 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);
+ 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,
- des_ctrl)
+ EVP_CIPH_RAND_KEY, des_init_key, NULL,
+ EVP_CIPHER_set_asn1_iv, EVP_CIPHER_get_asn1_iv, 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)
-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)
+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)
+
+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)
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;
- }
+ 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;
- }
- }
+{
+
+ 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