0f97855826
All source files in lib/hcrypto should be built the same way. Since this source directory is dependent on libroken then all source files must be built using the roken.h declarations and included headers. Also, there is no config.h in the local directory so angle brackets include of quotes should be used. Finally, because roken.h includes stdio.h, stdlib.h, stdarg.h, limits.h, strings.h, sys/types.h, etc., do not include them separately. Start all source files with #include <config.h> #include <roken.h> Change-Id: I09ab47f8a5472018efe6c8b59a0e51fde8f24724
145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/*
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* Copyright (c) 2008 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <config.h>
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#include <roken.h>
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#include <krb5-types.h> /* should really be stdint.h */
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#include <hcrypto/evp.h>
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#include <err.h>
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#include <assert.h>
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/* key and initial vector */
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static char key[16] =
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"\xaa\xbb\x45\xd4\xaa\xbb\x45\xd4"
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"\xaa\xbb\x45\xd4\xaa\xbb\x45\xd4";
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static char ivec[16] =
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"\xaa\xbb\x45\xd4\xaa\xbb\x45\xd4"
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"\xaa\xbb\x45\xd4\xaa\xbb\x45\xd4";
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static void
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usage(int exit_code) __attribute__((noreturn));
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static void
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usage(int exit_code)
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{
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printf("usage: %s in out\n", getprogname());
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exit(exit_code);
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}
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int
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main(int argc, char **argv)
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{
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int encryptp = 1;
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const char *ifn = NULL, *ofn = NULL;
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FILE *in, *out;
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void *ibuf, *obuf;
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int ilen, olen;
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size_t block_size = 0;
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const EVP_CIPHER *c = EVP_aes_128_cbc();
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EVP_CIPHER_CTX ctx;
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int ret;
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setprogname(argv[0]);
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if (argc == 2) {
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if (strcmp(argv[1], "--version") == 0) {
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printf("version");
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exit(0);
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}
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if (strcmp(argv[1], "--help") == 0)
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usage(0);
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usage(1);
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} else if (argc == 4) {
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block_size = atoi(argv[1]);
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if (block_size == 0)
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errx(1, "invalid blocksize %s", argv[1]);
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ifn = argv[2];
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ofn = argv[3];
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} else
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usage(1);
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in = fopen(ifn, "r");
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if (in == NULL)
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errx(1, "failed to open input file");
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out = fopen(ofn, "w+");
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if (out == NULL)
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errx(1, "failed to open output file");
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/* Check that key and ivec are long enough */
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assert(EVP_CIPHER_key_length(c) <= sizeof(key));
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assert(EVP_CIPHER_iv_length(c) <= sizeof(ivec));
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/*
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* Allocate buffer, the output buffer is at least
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* EVP_CIPHER_block_size() longer
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*/
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ibuf = malloc(block_size);
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obuf = malloc(block_size + EVP_CIPHER_block_size(c));
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/*
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* Init the memory used for EVP_CIPHER_CTX and set the key and
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* ivec.
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*/
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EVP_CIPHER_CTX_init(&ctx);
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EVP_CipherInit_ex(&ctx, c, NULL, key, ivec, encryptp);
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/* read in buffer */
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while ((ilen = fread(ibuf, 1, block_size, in)) > 0) {
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/* encrypto/decrypt */
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ret = EVP_CipherUpdate(&ctx, obuf, &olen, ibuf, ilen);
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if (ret != 1) {
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EVP_CIPHER_CTX_cleanup(&ctx);
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errx(1, "EVP_CipherUpdate failed");
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}
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/* write out to output file */
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fwrite(obuf, 1, olen, out);
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}
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/* done reading */
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fclose(in);
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/* clear up any last bytes left in the output buffer */
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ret = EVP_CipherFinal_ex(&ctx, obuf, &olen);
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EVP_CIPHER_CTX_cleanup(&ctx);
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if (ret != 1)
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errx(1, "EVP_CipherFinal_ex failed");
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/* write the last bytes out and close */
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fwrite(obuf, 1, olen, out);
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fclose(out);
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return 0;
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}
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