/*?encrypt?V1.1?Fri?Oct?18?04:28:03?NZDT?2002?*/
/*?File?de/encryption?using?libtomcrypt?*/
/*?Written?by?Daniel?Richards??*/
/*?Help?from?Tom?St?Denis?with?various?bits?*/
/*?This?code?is?public?domain?no?rights?reserved.?*/
/*?Encrypts?by?default?-d?flag?enables?decryption?*/
/*?ie:?./encrypt?blowfish?story.txt?story.ct?*/
/*?./encrypt?-d?blowfish?story.ct?story.pt?*/

#include?

int?errno;

int?usage（char?*name）?
{
???int?x;

???printf（“Usage:?%s?[-d]（ecrypt）?cipher?infile?outfile\nCiphers:\n“?name）;
???for?（x?=?0;?cipher_descriptor[x].name?!=?NULL;?x++）?{
??????printf（“%s\n“cipher_descriptor[x].name）;
???}
???exit（1）;
}

void?register_algs（void）
{
???int?x;
???
#ifdef?LTC_RIJNDAEL
??register_cipher?（&aes_desc）;
#endif
#ifdef?LTC_BLOWFISH
??register_cipher?（&blowfish_desc）;
#endif
#ifdef?LTC_XTEA
??register_cipher?（&xtea_desc）;
#endif
#ifdef?LTC_RC5
??register_cipher?（&rc5_desc）;
#endif
#ifdef?LTC_RC6
??register_cipher?（&rc6_desc）;
#endif
#ifdef?LTC_SAFERP
??register_cipher?（&saferp_desc）;
#endif
#ifdef?LTC_TWOFISH
??register_cipher?（&twofish_desc）;
#endif
#ifdef?LTC_SAFER
??register_cipher?（&safer_k64_desc）;
??register_cipher?（&safer_sk64_desc）;
??register_cipher?（&safer_k128_desc）;
??register_cipher?（&safer_sk128_desc）;
#endif
#ifdef?LTC_RC2
??register_cipher?（&rc2_desc）;
#endif
#ifdef?LTC_DES
??register_cipher?（&des_desc）;
??register_cipher?（&des3_desc）;
#endif
#ifdef?LTC_CAST5
??register_cipher?（&cast5_desc）;
#endif
#ifdef?LTC_NOEKEON
??register_cipher?（&noekeon_desc）;
#endif
#ifdef?LTC_SKIPJACK
??register_cipher?（&skipjack_desc）;
#endif
#ifdef?LTC_KHAZAD
??register_cipher?（&khazad_desc）;
#endif
#ifdef?LTC_ANUBIS
??register_cipher?（&anubis_desc）;
#endif

???if?（register_hash（&sha256_desc）?==?-1）?{
??????printf（“Error?registering?LTC_SHA256\n“）;
??????exit（-1）;
???}?

???if?（register_prng（&yarrow_desc）?==?-1）?{
??????printf（“Error?registering?yarrow?PRNG\n“）;
??????exit（-1）;
???}

???if?（register_prng（&sprng_desc）?==?-1）?{
??????printf（“Error?registering?sprng?PRNG\n“）;
??????exit（-1）;
???}
}

int?main（int?argc?char?*argv[]）?
{
???unsigned?char?plaintext[512]ciphertext[512];
???unsigned?char?tmpkey[512]?key[MAXBLOCKSIZE]?IV[MAXBLOCKSIZE];
???unsigned?char?inbuf[512];?/*?i/o?block?size?*/
???unsigned?long?outlen?y?ivsize?x?decrypt;
???symmetric_CTR?ctr;
???int?cipher_idx?hash_idx?ks;
???char?*infile?*outfile?*cipher;
???prng_state?prng;
???FILE?*fdin?*fdout;

???/*?register?algs?so?they?can?be?printed?*/
???register_algs（）;

???if?（argc???????return?usage（argv[0]）;
???}

???if?（!strcmp（argv[1]?“-d“））?{
??????decrypt?=?1;
??????cipher??=?argv[2];
??????infile??=?argv[3];
??????outfile?=?argv[4];
???}?else?{
??????decrypt?=?0;
??????cipher??=?argv[1];
??????infile??=?argv[2];
??????outfile?=?argv[3];
???}???

???/*?file?handles?setup?*/
???fdin?=?fopen（infile“rb“）;
???if?（fdin?==?NULL）?{
??????perror（“Can‘t?open?input?for?reading“）;
??????exit（-1）;
???}

???fdout?=?fopen（outfile

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????902??2007-05-12?22:46??crypt\build.sh

?????文件?????111298??2007-05-12?22:46??crypt\changes

?????文件???????1233??2007-05-12?22:46??crypt\crypt.lof

?????文件?????297576??2007-05-12?22:46??crypt\crypt.tex

?????文件???????6160??2007-05-12?22:46??crypt\demos\encrypt.c

?????文件???????2988??2007-05-12?22:46??crypt\demos\hashsum.c

?????文件???????4333??2007-05-12?22:46??crypt\demos\multi.c

?????文件????????334??2007-05-12?22:46??crypt\demos\small.c

?????文件???????1794??2007-05-12?22:46??crypt\demos\test.c

?????文件????????646??2007-05-12?22:46??crypt\demos\timing.c

?????文件??????24417??2007-05-12?22:46??crypt\demos\tv_gen.c

?????文件?????827358??2007-05-12?22:46??crypt\doc\crypt.pdf

?????文件????????325??2007-05-12?22:46??crypt\doc\footer.html

?????文件????????422??2007-05-12?22:46??crypt\doc\header.html

?????文件??????47498??2007-05-12?22:46??crypt\Doxyfile

?????文件????????517??2007-05-12?22:46??crypt\filter.pl

?????文件????????218??2007-05-12?22:46??crypt\fixupind.pl

?????文件????????681??2007-05-12?22:46??crypt\genlist.sh

?????文件??????34650??2007-05-12?22:46??crypt\libtomcrypt.dsp

?????文件?????????82??2007-05-12?22:46??crypt\LICENSE

?????文件??????17728??2007-05-12?22:46??crypt\makefile

?????文件??????14754??2007-05-12?22:46??crypt\makefile.icc

?????文件??????11445??2007-05-12?22:46??crypt\makefile.msvc

?????文件??????14414??2007-05-12?22:46??crypt\makefile.shared

?????文件??????13617??2009-05-27?20:07??crypt\makefile.unix

?????文件????????122??2007-05-12?22:46??crypt\mess.sh

?????文件????????993??2007-05-12?22:46??crypt\notes\base64_tv.txt

?????文件??????14683??2007-05-12?22:46??crypt\notes\ccm_tv.txt

?????文件??????52936??2007-05-12?22:46??crypt\notes\cipher_tv.txt

?????文件??????23807??2007-05-12?22:46??crypt\notes\eax_tv.txt

............此處省略757個文件信息