Commit a1b48f8e authored by Niels Möller's avatar Niels Möller

New base64enc example program, based on code contributed by Jeronimo Pellegrini.

parent bf903923
2012-04-14 Niels Möller <nisse@lysator.liu.se>
* examples/Makefile.in (base64enc): New target. Also added missing
io.o dependency to several other targets.
* examples/base64enc.c: New file, based on example code
contributed by Jeronimo Pellegrini.
* examples/rsa-encrypt.c (process_file): Reorganized fread loop.
(usage): New function.
(main): Implemented --help option.
......
......@@ -15,11 +15,15 @@ BENCH_LIBS = @BENCH_LIBS@
RSA_TARGETS = rsa-keygen$(EXEEXT) rsa-sign$(EXEEXT) \
rsa-verify$(EXEEXT) rsa-encrypt$(EXEEXT) rsa-decrypt$(EXEEXT)
TARGETS = nettle-benchmark$(EXEEXT) eratosthenes$(EXEEXT) @IF_HOGWEED@ $(RSA_TARGETS) next-prime$(EXEEXT) random-prime$(EXEEXT)
TARGETS = nettle-benchmark$(EXEEXT) eratosthenes$(EXEEXT) \
base64enc$(EXEEXT) @IF_HOGWEED@ $(RSA_TARGETS) next-prime$(EXEEXT) random-prime$(EXEEXT)
SOURCES = nettle-benchmark.c eratosthenes.c next-prime.c random-prime.c \
nettle-openssl.c \
io.c read_rsa_key.c \
rsa-encrypt.c rsa-decrypt.c rsa-keygen.c rsa-sign.c rsa-verify.c
rsa-encrypt.c rsa-decrypt.c rsa-keygen.c rsa-sign.c rsa-verify.c \
base64enc.c
GETOPT_OBJS = ../getopt.$(OBJEXT) ../getopt1.$(OBJEXT)
......@@ -41,31 +45,35 @@ next-prime$(EXEEXT): next-prime.$(OBJEXT) $(GETOPT_OBJS) ../libhogweed.a
$(LINK) next-prime.$(OBJEXT) $(GETOPT_OBJS) \
-lhogweed -lnettle $(LIBS) -o next-prime$(EXEEXT)
random-prime$(EXEEXT): random-prime.$(OBJEXT) $(GETOPT_OBJS) ../libhogweed.a
random-prime$(EXEEXT): random-prime.$(OBJEXT) io.$(OBJEXT) $(GETOPT_OBJS) ../libhogweed.a
$(LINK) random-prime.$(OBJEXT) io.$(OBJEXT) $(GETOPT_OBJS) \
-lhogweed -lnettle $(LIBS) -o random-prime$(EXEEXT)
rsa-keygen$(EXEEXT): rsa-keygen.$(OBJEXT) $(GETOPT_OBJS)
rsa-keygen$(EXEEXT): rsa-keygen.$(OBJEXT) io.$(OBJEXT) $(GETOPT_OBJS)
$(LINK) rsa-keygen.$(OBJEXT) io.$(OBJEXT) $(GETOPT_OBJS) \
-lhogweed -lnettle $(LIBS) -o rsa-keygen$(EXEEXT)
rsa-sign$(EXEEXT): rsa-sign.$(OBJEXT) read_rsa_key.$(OBJEXT)
rsa-sign$(EXEEXT): rsa-sign.$(OBJEXT) io.$(OBJEXT) read_rsa_key.$(OBJEXT)
$(LINK) rsa-sign.$(OBJEXT) io.$(OBJEXT) read_rsa_key.$(OBJEXT) \
-lhogweed -lnettle $(LIBS) -o rsa-sign$(EXEEXT)
rsa-verify$(EXEEXT): rsa-verify.$(OBJEXT) read_rsa_key.$(OBJEXT)
rsa-verify$(EXEEXT): rsa-verify.$(OBJEXT) io.$(OBJEXT) read_rsa_key.$(OBJEXT)
$(LINK) rsa-verify.$(OBJEXT) io.$(OBJEXT) read_rsa_key.$(OBJEXT) \
-lhogweed -lnettle $(LIBS) -o rsa-verify$(EXEEXT)
rsa-encrypt$(EXEEXT): rsa-encrypt.$(OBJEXT) read_rsa_key.$(OBJEXT) $(GETOPT_OBJS)
rsa-encrypt$(EXEEXT): rsa-encrypt.$(OBJEXT) io.$(OBJEXT) read_rsa_key.$(OBJEXT) $(GETOPT_OBJS)
$(LINK) rsa-encrypt.$(OBJEXT) io.$(OBJEXT) read_rsa_key.$(OBJEXT) \
$(GETOPT_OBJS) \
-lhogweed -lnettle $(LIBS) -o rsa-encrypt$(EXEEXT)
rsa-decrypt$(EXEEXT): rsa-decrypt.$(OBJEXT) read_rsa_key.$(OBJEXT)
rsa-decrypt$(EXEEXT): rsa-decrypt.$(OBJEXT) io.$(OBJEXT) read_rsa_key.$(OBJEXT)
$(LINK) rsa-decrypt.$(OBJEXT) io.$(OBJEXT) read_rsa_key.$(OBJEXT) \
-lhogweed -lnettle $(LIBS) -o rsa-decrypt$(EXEEXT)
base64enc$(EXEEXT): base64enc.$(OBJEXT) io.$(OBJEXT)
$(LINK) base64enc.$(OBJEXT) io.$(OBJEXT) \
-lnettle $(LIBS) -o base64enc$(EXEEXT)
eratosthenes$(EXEEXT): eratosthenes.$(OBJEXT) $(GETOPT_OBJS)
$(LINK) eratosthenes.$(OBJEXT) $(GETOPT_OBJS) -o eratosthenes$(EXEEXT)
......
/* base64enc -- an encoder for base64
*
* Copyright (C) 2006, 2012 Jeronimo Pellegrini, Niels Möller
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
* MA 02111-1307, USA.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <nettle/base64.h>
#include "io.h"
/* The number of bytes read in each iteration, we do one line at a time: */
#define CHUNK_SIZE 54
/* The *maximum* size of an encoded chunk: */
#define ENCODED_SIZE BASE64_ENCODE_LENGTH(CHUNK_SIZE)
/*
* Reads bytes from standard input and writes base64-encoded
* on standard output.
*/
int main(int argc UNUSED, char **argv UNUSED)
{
struct base64_encode_ctx b64_ctx;
/* Init the context: */
base64_encode_init(&b64_ctx);
#ifdef WIN32
_setmode(0, O_BINARY);
#endif
for (;;)
{
/* "buffer" will hold the bytes from disk: */
uint8_t buffer[CHUNK_SIZE];
/* "result" is the result vector: */
uint8_t result[ENCODED_SIZE + BASE64_ENCODE_FINAL_LENGTH + 1];
unsigned nbytes; /* Number of bytes read from stdin */
int encoded_bytes; /* total number of bytes encoded per iteration */
nbytes = fread(buffer,1,CHUNK_SIZE,stdin);
/* We overwrite result with more data */
encoded_bytes = base64_encode_update(&b64_ctx, result, nbytes, buffer);
if (nbytes < CHUNK_SIZE)
{
if (ferror(stdin))
{
werror ("Error reading file: %s\n", strerror(errno));
return EXIT_FAILURE;
}
encoded_bytes += base64_encode_final(&b64_ctx,result + encoded_bytes);
result[encoded_bytes++] = '\n';
if (!write_string (stdout, encoded_bytes, result)
|| fflush (stdout) != 0)
{
werror ("Error writing file: %s\n", strerror(errno));
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
/* The result vector is written */
result[encoded_bytes++] = '\n';
if (!write_string (stdout, encoded_bytes, result))
{
werror ("Error writing file: %s\n", strerror(errno));
return EXIT_FAILURE;
}
}
}
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