diff options
Diffstat (limited to 'crypto/des/enc_writ.c')
| -rw-r--r-- | crypto/des/enc_writ.c | 190 |
1 files changed, 94 insertions, 96 deletions
diff --git a/crypto/des/enc_writ.c b/crypto/des/enc_writ.c index 2353ac1e892f..b4eecc381203 100644 --- a/crypto/des/enc_writ.c +++ b/crypto/des/enc_writ.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 @@ -63,7 +63,7 @@ #include "des_locl.h" #include <openssl/rand.h> -/* +/*- * WARNINGS: * * - The data format used by DES_enc_write() and DES_enc_read() @@ -78,102 +78,100 @@ */ int DES_enc_write(int fd, const void *_buf, int len, - DES_key_schedule *sched, DES_cblock *iv) - { + DES_key_schedule *sched, DES_cblock *iv) +{ #if defined(OPENSSL_NO_POSIX_IO) - return (-1); + return (-1); #else -#ifdef _LIBC - extern unsigned long time(); - extern int write(); -#endif - const unsigned char *buf=_buf; - long rnum; - int i,j,k,outnum; - static unsigned char *outbuf=NULL; - unsigned char shortbuf[8]; - unsigned char *p; - const unsigned char *cp; - static int start=1; +# ifdef _LIBC + extern unsigned long time(); + extern int write(); +# endif + const unsigned char *buf = _buf; + long rnum; + int i, j, k, outnum; + static unsigned char *outbuf = NULL; + unsigned char shortbuf[8]; + unsigned char *p; + const unsigned char *cp; + static int start = 1; - if (outbuf == NULL) - { - outbuf=OPENSSL_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; - } + if (outbuf == NULL) { + outbuf = OPENSSL_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; + } - /* 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); - } + /* 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); + /* write length first */ + p = outbuf; + l2n(len, p); - /* pad short strings */ - if (len < 8) - { - cp=shortbuf; - memcpy(shortbuf,buf,len); - RAND_pseudo_bytes(shortbuf+len, 8-len); - rnum=8; - } - else - { - cp=buf; - rnum=((len+7)/8*8); /* round up to nearest eight */ - } + /* pad short strings */ + if (len < 8) { + cp = shortbuf; + memcpy(shortbuf, buf, len); + RAND_pseudo_bytes(shortbuf + len, 8 - len); + rnum = 8; + } else { + cp = buf; + rnum = ((len + 7) / 8 * 8); /* round up to nearest eight */ + } - if (DES_rw_mode & DES_PCBC_MODE) - DES_pcbc_encrypt(cp,&(outbuf[HDRSIZE]),(len<8)?8:len,sched,iv, - DES_ENCRYPT); - else - DES_cbc_encrypt(cp,&(outbuf[HDRSIZE]),(len<8)?8:len,sched,iv, - DES_ENCRYPT); + if (DES_rw_mode & DES_PCBC_MODE) + DES_pcbc_encrypt(cp, &(outbuf[HDRSIZE]), (len < 8) ? 8 : len, sched, + iv, DES_ENCRYPT); + else + DES_cbc_encrypt(cp, &(outbuf[HDRSIZE]), (len < 8) ? 8 : len, sched, + iv, DES_ENCRYPT); - /* output */ - outnum=rnum+HDRSIZE; + /* output */ + outnum = rnum + HDRSIZE; - for (j=0; j<outnum; j+=i) - { - /* eay 26/08/92 I was not doing writing from where we - * got up to. */ -#ifndef _WIN32 - i=write(fd,(void *)&(outbuf[j]),outnum-j); -#else - i=_write(fd,(void *)&(outbuf[j]),outnum-j); -#endif - if (i == -1) - { -#ifdef EINTR - if (errno == EINTR) - i=0; - else -#endif - /* This is really a bad error - very bad - * It will stuff-up both ends. */ - return(-1); - } - } + for (j = 0; j < outnum; j += i) { + /* + * eay 26/08/92 I was not doing writing from where we got up to. + */ +# ifndef _WIN32 + i = write(fd, (void *)&(outbuf[j]), outnum - j); +# else + i = _write(fd, (void *)&(outbuf[j]), outnum - j); +# endif + if (i == -1) { +# ifdef EINTR + if (errno == EINTR) + i = 0; + else +# endif + /* + * This is really a bad error - very bad It will stuff-up + * both ends. + */ + return (-1); + } + } - return(len); -#endif /* OPENSSL_NO_POSIX_IO */ - } + return (len); +#endif /* OPENSSL_NO_POSIX_IO */ +} |