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-rw-r--r--crypto/des/cfb64ede.c363
1 files changed, 179 insertions, 184 deletions
diff --git a/crypto/des/cfb64ede.c b/crypto/des/cfb64ede.c
index de34ecceb96d..5d709c12d3a8 100644
--- a/crypto/des/cfb64ede.c
+++ b/crypto/des/cfb64ede.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
@@ -59,196 +59,191 @@
#include "des_locl.h"
#include "e_os.h"
-/* The input and output encrypted as though 64bit cfb mode is being
- * used. The extra state information to record how much of the
- * 64bit block we have used is contained in *num;
+/*
+ * The input and output encrypted as though 64bit cfb mode is being used.
+ * The extra state information to record how much of the 64bit block we have
+ * used is contained in *num;
*/
void DES_ede3_cfb64_encrypt(const unsigned char *in, unsigned char *out,
- long length, DES_key_schedule *ks1,
- DES_key_schedule *ks2, DES_key_schedule *ks3,
- DES_cblock *ivec, int *num, int enc)
- {
- register DES_LONG v0,v1;
- register long l=length;
- register int n= *num;
- DES_LONG ti[2];
- unsigned char *iv,c,cc;
+ long length, DES_key_schedule *ks1,
+ DES_key_schedule *ks2, DES_key_schedule *ks3,
+ DES_cblock *ivec, int *num, int enc)
+{
+ register DES_LONG v0, v1;
+ register long l = length;
+ register int n = *num;
+ DES_LONG ti[2];
+ unsigned char *iv, c, cc;
- iv=&(*ivec)[0];
- if (enc)
- {
- while (l--)
- {
- if (n == 0)
- {
- c2l(iv,v0);
- c2l(iv,v1);
+ iv = &(*ivec)[0];
+ if (enc) {
+ while (l--) {
+ if (n == 0) {
+ c2l(iv, v0);
+ c2l(iv, v1);
- ti[0]=v0;
- ti[1]=v1;
- DES_encrypt3(ti,ks1,ks2,ks3);
- v0=ti[0];
- v1=ti[1];
+ ti[0] = v0;
+ ti[1] = v1;
+ DES_encrypt3(ti, ks1, ks2, ks3);
+ v0 = ti[0];
+ v1 = ti[1];
- iv = &(*ivec)[0];
- l2c(v0,iv);
- l2c(v1,iv);
- iv = &(*ivec)[0];
- }
- c= *(in++)^iv[n];
- *(out++)=c;
- iv[n]=c;
- n=(n+1)&0x07;
- }
- }
- else
- {
- while (l--)
- {
- if (n == 0)
- {
- c2l(iv,v0);
- c2l(iv,v1);
+ iv = &(*ivec)[0];
+ l2c(v0, iv);
+ l2c(v1, iv);
+ iv = &(*ivec)[0];
+ }
+ c = *(in++) ^ iv[n];
+ *(out++) = c;
+ iv[n] = c;
+ n = (n + 1) & 0x07;
+ }
+ } else {
+ while (l--) {
+ if (n == 0) {
+ c2l(iv, v0);
+ c2l(iv, v1);
- ti[0]=v0;
- ti[1]=v1;
- DES_encrypt3(ti,ks1,ks2,ks3);
- v0=ti[0];
- v1=ti[1];
+ ti[0] = v0;
+ ti[1] = v1;
+ DES_encrypt3(ti, ks1, ks2, ks3);
+ v0 = ti[0];
+ v1 = ti[1];
- iv = &(*ivec)[0];
- l2c(v0,iv);
- l2c(v1,iv);
- iv = &(*ivec)[0];
- }
- cc= *(in++);
- c=iv[n];
- iv[n]=cc;
- *(out++)=c^cc;
- n=(n+1)&0x07;
- }
- }
- v0=v1=ti[0]=ti[1]=c=cc=0;
- *num=n;
- }
+ iv = &(*ivec)[0];
+ l2c(v0, iv);
+ l2c(v1, iv);
+ iv = &(*ivec)[0];
+ }
+ cc = *(in++);
+ c = iv[n];
+ iv[n] = cc;
+ *(out++) = c ^ cc;
+ n = (n + 1) & 0x07;
+ }
+ }
+ v0 = v1 = ti[0] = ti[1] = c = cc = 0;
+ *num = n;
+}
-#ifdef undef /* MACRO */
-void DES_ede2_cfb64_encrypt(unsigned char *in, unsigned char *out, long length,
- DES_key_schedule ks1, DES_key_schedule ks2, DES_cblock (*ivec),
- int *num, int enc)
- {
- DES_ede3_cfb64_encrypt(in,out,length,ks1,ks2,ks1,ivec,num,enc);
- }
+#ifdef undef /* MACRO */
+void DES_ede2_cfb64_encrypt(unsigned char *in, unsigned char *out,
+ long length, DES_key_schedule ks1,
+ DES_key_schedule ks2, DES_cblock (*ivec),
+ int *num, int enc)
+{
+ DES_ede3_cfb64_encrypt(in, out, length, ks1, ks2, ks1, ivec, num, enc);
+}
#endif
-/* This is compatible with the single key CFB-r for DES, even thought that's
+/*
+ * This is compatible with the single key CFB-r for DES, even thought that's
* not what EVP needs.
*/
-void DES_ede3_cfb_encrypt(const unsigned char *in,unsigned char *out,
- int numbits,long length,DES_key_schedule *ks1,
- DES_key_schedule *ks2,DES_key_schedule *ks3,
- DES_cblock *ivec,int enc)
- {
- register DES_LONG d0,d1,v0,v1;
- register unsigned long l=length,n=((unsigned int)numbits+7)/8;
- register int num=numbits,i;
- DES_LONG ti[2];
- unsigned char *iv;
- unsigned char ovec[16];
-
- if (num > 64) return;
- iv = &(*ivec)[0];
- c2l(iv,v0);
- c2l(iv,v1);
- if (enc)
- {
- while (l >= n)
- {
- l-=n;
- ti[0]=v0;
- ti[1]=v1;
- DES_encrypt3(ti,ks1,ks2,ks3);
- c2ln(in,d0,d1,n);
- in+=n;
- d0^=ti[0];
- d1^=ti[1];
- l2cn(d0,d1,out,n);
- out+=n;
- /* 30-08-94 - eay - changed because l>>32 and
- * l<<32 are bad under gcc :-( */
- if (num == 32)
- { v0=v1; v1=d0; }
- else if (num == 64)
- { v0=d0; v1=d1; }
- else
- {
- iv=&ovec[0];
- l2c(v0,iv);
- l2c(v1,iv);
- l2c(d0,iv);
- l2c(d1,iv);
- /* shift ovec left most of the bits... */
- memmove(ovec,ovec+num/8,8+(num%8 ? 1 : 0));
- /* now the remaining bits */
- if(num%8 != 0)
- for(i=0 ; i < 8 ; ++i)
- {
- ovec[i]<<=num%8;
- ovec[i]|=ovec[i+1]>>(8-num%8);
- }
- iv=&ovec[0];
- c2l(iv,v0);
- c2l(iv,v1);
- }
- }
- }
- else
- {
- while (l >= n)
- {
- l-=n;
- ti[0]=v0;
- ti[1]=v1;
- DES_encrypt3(ti,ks1,ks2,ks3);
- c2ln(in,d0,d1,n);
- in+=n;
- /* 30-08-94 - eay - changed because l>>32 and
- * l<<32 are bad under gcc :-( */
- if (num == 32)
- { v0=v1; v1=d0; }
- else if (num == 64)
- { v0=d0; v1=d1; }
- else
- {
- iv=&ovec[0];
- l2c(v0,iv);
- l2c(v1,iv);
- l2c(d0,iv);
- l2c(d1,iv);
- /* shift ovec left most of the bits... */
- memmove(ovec,ovec+num/8,8+(num%8 ? 1 : 0));
- /* now the remaining bits */
- if(num%8 != 0)
- for(i=0 ; i < 8 ; ++i)
- {
- ovec[i]<<=num%8;
- ovec[i]|=ovec[i+1]>>(8-num%8);
- }
- iv=&ovec[0];
- c2l(iv,v0);
- c2l(iv,v1);
- }
- d0^=ti[0];
- d1^=ti[1];
- l2cn(d0,d1,out,n);
- out+=n;
- }
- }
- iv = &(*ivec)[0];
- l2c(v0,iv);
- l2c(v1,iv);
- v0=v1=d0=d1=ti[0]=ti[1]=0;
- }
+void DES_ede3_cfb_encrypt(const unsigned char *in, unsigned char *out,
+ int numbits, long length, DES_key_schedule *ks1,
+ DES_key_schedule *ks2, DES_key_schedule *ks3,
+ DES_cblock *ivec, int enc)
+{
+ register DES_LONG d0, d1, v0, v1;
+ register unsigned long l = length, n = ((unsigned int)numbits + 7) / 8;
+ register int num = numbits, i;
+ DES_LONG ti[2];
+ unsigned char *iv;
+ unsigned char ovec[16];
+ if (num > 64)
+ return;
+ iv = &(*ivec)[0];
+ c2l(iv, v0);
+ c2l(iv, v1);
+ if (enc) {
+ while (l >= n) {
+ l -= n;
+ ti[0] = v0;
+ ti[1] = v1;
+ DES_encrypt3(ti, ks1, ks2, ks3);
+ c2ln(in, d0, d1, n);
+ in += n;
+ d0 ^= ti[0];
+ d1 ^= ti[1];
+ l2cn(d0, d1, out, n);
+ out += n;
+ /*
+ * 30-08-94 - eay - changed because l>>32 and l<<32 are bad under
+ * gcc :-(
+ */
+ if (num == 32) {
+ v0 = v1;
+ v1 = d0;
+ } else if (num == 64) {
+ v0 = d0;
+ v1 = d1;
+ } else {
+ iv = &ovec[0];
+ l2c(v0, iv);
+ l2c(v1, iv);
+ l2c(d0, iv);
+ l2c(d1, iv);
+ /* shift ovec left most of the bits... */
+ memmove(ovec, ovec + num / 8, 8 + (num % 8 ? 1 : 0));
+ /* now the remaining bits */
+ if (num % 8 != 0)
+ for (i = 0; i < 8; ++i) {
+ ovec[i] <<= num % 8;
+ ovec[i] |= ovec[i + 1] >> (8 - num % 8);
+ }
+ iv = &ovec[0];
+ c2l(iv, v0);
+ c2l(iv, v1);
+ }
+ }
+ } else {
+ while (l >= n) {
+ l -= n;
+ ti[0] = v0;
+ ti[1] = v1;
+ DES_encrypt3(ti, ks1, ks2, ks3);
+ c2ln(in, d0, d1, n);
+ in += n;
+ /*
+ * 30-08-94 - eay - changed because l>>32 and l<<32 are bad under
+ * gcc :-(
+ */
+ if (num == 32) {
+ v0 = v1;
+ v1 = d0;
+ } else if (num == 64) {
+ v0 = d0;
+ v1 = d1;
+ } else {
+ iv = &ovec[0];
+ l2c(v0, iv);
+ l2c(v1, iv);
+ l2c(d0, iv);
+ l2c(d1, iv);
+ /* shift ovec left most of the bits... */
+ memmove(ovec, ovec + num / 8, 8 + (num % 8 ? 1 : 0));
+ /* now the remaining bits */
+ if (num % 8 != 0)
+ for (i = 0; i < 8; ++i) {
+ ovec[i] <<= num % 8;
+ ovec[i] |= ovec[i + 1] >> (8 - num % 8);
+ }
+ iv = &ovec[0];
+ c2l(iv, v0);
+ c2l(iv, v1);
+ }
+ d0 ^= ti[0];
+ d1 ^= ti[1];
+ l2cn(d0, d1, out, n);
+ out += n;
+ }
+ }
+ iv = &(*ivec)[0];
+ l2c(v0, iv);
+ l2c(v1, iv);
+ v0 = v1 = d0 = d1 = ti[0] = ti[1] = 0;
+}