1 files changed, 160 insertions, 0 deletions

diff --git a/src/lib/libcrypto/des/enc_writ.c b/src/lib/libcrypto/des/enc_writ.c
new file mode 100644
index 0000000000..29a7330fb0
--- /dev/null
+++ b/src/lib/libcrypto/des/enc_writ.c
@@ -0,0 +1,160 @@
+/* crypto/des/enc_writ.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * 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:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     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 
+ *    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
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * 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
+ * [including the GNU Public Licence.]
+ */
+
+#include <errno.h>
+#include <time.h>
+#include "des_locl.h"
+
+int des_enc_write(fd, buf, len, sched, iv)
+int fd;
+char *buf;
+int len;
+des_key_schedule sched;
+des_cblock (*iv);
+        {
+#ifdef _LIBC
+        extern int srandom();
+        extern unsigned long time();
+        extern int random();
+        extern int write();
+#endif
+
+        long rnum;
+        int i,j,k,outnum;
+        static char *outbuf=NULL;
+        char shortbuf[8];
+        char *p;
+        static int start=1;
+
+        if (outbuf == NULL)
+                {
+                outbuf=(char *)malloc(BSIZE+HDRSIZE);
+                if (outbuf == NULL) return(-1);
+                }
+        /* If we are sending less than 8 bytes, the same char will look
+         * the same if we don't pad it out with random bytes */
+        if (start)
+                {
+                start=0;
+                srandom((unsigned int)time(NULL));
+                }
+
+        /* lets recurse if we want to send the data in small chunks */
+        if (len > MAXWRITE)
+                {
+                j=0;
+                for (i=0; i<len; i+=k)
+                        {
+                        k=des_enc_write(fd,&(buf[i]),
+                                ((len-i) > MAXWRITE)?MAXWRITE:(len-i),sched,iv);
+                        if (k < 0)
+                                return(k);
+                        else
+                                j+=k;
+                        }
+                return(j);
+                }
+
+        /* write length first */
+        p=outbuf;
+        l2n(len,p);
+
+        /* pad short strings */
+        if (len < 8)
+                {
+                p=shortbuf;
+                memcpy(shortbuf,buf,(unsigned int)len);
+                for (i=len; i<8; i++)
+                        shortbuf[i]=random();
+                rnum=8;
+                }
+        else
+                {
+                p=buf;
+                rnum=((len+7)/8*8); /* round up to nearest eight */
+                }
+
+        if (des_rw_mode & DES_PCBC_MODE)
+                des_pcbc_encrypt((des_cblock *)p,
+                        (des_cblock *)&(outbuf[HDRSIZE]),
+                        (long)((len<8)?8:len),sched,iv,DES_ENCRYPT); 
+        else
+                des_cbc_encrypt((des_cblock *)p,
+                        (des_cblock *)&(outbuf[HDRSIZE]),
+                        (long)((len<8)?8:len),sched,iv,DES_ENCRYPT); 
+
+        /* output */
+        outnum=(int)rnum+HDRSIZE;
+
+        for (j=0; j<outnum; j+=i)
+                {
+                /* eay 26/08/92 I was not doing writing from where we
+                 * got upto. */
+                i=write(fd,&(outbuf[j]),(unsigned int)(outnum-j));
+                if (i == -1)
+                        {
+                        if (errno == EINTR)
+                                i=0;
+                        else    /* This is really a bad error - very bad
+                                 * It will stuff-up both ends. */
+                                return(-1);
+                        }
+                }
+
+        return(len);
+        }