From: nobody@shell.portal.com
Date: Tue, 17 May 94 02:53:56 PDT
To: cypherpunks@toad.com
Subject: Disguise_PGP_Ascii
Message-ID: <199405170955.CAA03436@jobe.shell.portal.com>
MIME-Version: 1.0
Content-Type: text/plain


-----BEGIN PGP SIGNED MESSAGE-----

It occurred to me that if we are going to be posting pgp'ed files to a
newsgroups it might be best to remove the PGP headers and make the
ciphertext look more text-like.  So here is some code to do that, sort of.
Basically I kept it simple so it's easy to read.

To make this:

- -----BEGIN PGP MESSAGE-----
Version: 2.3a

pgAAANL6C1+DERhOIhjtLQnEA0GZOnXmXa7xSqPTdX1Retrkn+CnnqkBrdGXQ/sO
9Gl+k4MjG/8991Erhl+cay+SBSKS+YoGNp79mwEnvwHICq/WsMs6lTo6GudHku/e
9gnXVHkYg5/lYbAWFLRnIMDhGpeeUqCEoG5vlhl++JMwzgc/lqGCwZAeUd+q5UXG
bqm/sGAo80xtG2hs1LqLPP0lCoqSZ5cJkuNRJBgpm+r8P4PHijCLr9iAE4InFy+F
otm+Ut8SDYbt8OjR9WPig8V7aYdp8x0=
=i8Hu
- -----END PGP MESSAGE-----

turn into this:

- --- --BEG IN  PGP M ESSAG E ---- -.. Ver s ion :  2.3a .. .. pgAAA N L
6C1+ DER hO IhjtL Qn E A0G ZO n X mXa7 x SqP TdX1 Retrk n+Cnn qk Br
dG XQ/sO ..9Gl +k4 MjG/8 9 91Er hl+ca y+SB SKS+ Yo GNp 79 m wEnv w 
HICq /W sMs 6lT o 6GudH ku /e..9 gn XVHk Yg 5/lY bAW FLRn IMDh Gp e
eUq CEo G5 v lhl++ J M w zgc / lqGCw ZAe Ud+q5 UXG ..bq m/s GAo 80xt 
G2 hs1Lq L PP0lC oqS Z5c JkuN RJBg pm+r8 P4P H ijC Lr9iA E4 InFy
+ F..ot m+U t8 SD Ybt8O jR 9WPig 8V 7 aYd p8x 0=..= i8 H u..--- --E ND
 P GP  ME S SAG E---- -..   

type "st e < infile > outfile"

And to convert it back type "st d < infile > outfile"

ST.C:

#include <stdio.h>
#include <time.h>
#ifdef MSDOS || __OS2__
#include <stdlib.h> // for exit()
#endif
void
main(int argc, char **argv)
{
    int         i = 0, j = 0, k;
    char        c;
    if (argc > 2)
    fprintf(stderr, "\nUsage: %s [e|d] < infile > outfile\n", argv[0]), exit(1);
    srand(time(0));
    while (!feof(stdin)) {
        if (toupper(*argv[1]) == 'E') {
            k = rand() % 5;
            for (i = 0; i < k + 1; i++, j++) {
                if (!(j % 50)) putchar('\n');
                c = getchar();
                if (c == '\n') printf("..");
                else putchar(c);
            }
            putchar(' ');
        } else if (toupper(*argv[1]) == 'D') {
            switch (c = getchar()) {
                case ' ':
                case '\n':
                    break;
                case '.':
                    if (i == 1) putchar('\n');
                    i = !i;
                    break;
                default:
                    putchar(c);
                    break;
            }
        } else
        fprintf(stderr, "\nUsage: %s [e|d] < infile > outfile\n", \
                argv[0]), exit(1);
    }
}


-----BEGIN PGP SIGNATURE-----
Version: 2.3a

iQCcAgUBLdh1frhnz857T+PFAQH9RQQ2KC5uYfO8tLlq1X8PcmuJy0Akog84lyfK
sYEiiwMHJsNm6/isVWvihZHBct/DuBkqtNsWXzwxl1rxlVvjTjOMyyDioidbfqnb
IOWLXkY+/vzdvgxr/Z0tV31mwCVoCcHIMUeBZ9+PBCHt16YCEb7emPE0/QzLFWnB
VNUSkSW+hYtP8Ezg1UoS
=TESU
-----END PGP SIGNATURE-----