libtomcrypt/crypt.c
2010-06-16 12:38:03 +02:00

533 lines
12 KiB
C

#include "mycrypt.h"
#include <signal.h>
#define TAB_SIZE 32
struct _cipher_descriptor cipher_descriptor[TAB_SIZE] = {
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL } };
struct _hash_descriptor hash_descriptor[TAB_SIZE] = {
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL, NULL, NULL } };
struct _prng_descriptor prng_descriptor[TAB_SIZE] = {
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL } };
/* ch1-01-1 */
#if (ARGTYPE == 0)
void crypt_argchk(char *v, char *s, int d)
{
#ifdef SONY_PS2
printf("_ARGCHK '%s' failure on line %d of file %s\n",
v, d, s);
#else
fprintf(stderr, "_ARGCHK '%s' failure on line %d of file %s\n",
v, d, s);
#endif
(void)raise(SIGABRT);
}
#endif
/* ch1-01-1 */
int find_cipher(const char *name)
{
int x;
_ARGCHK(name != NULL);
for (x = 0; x < TAB_SIZE; x++) {
if (cipher_descriptor[x].name != NULL && !strcmp(cipher_descriptor[x].name, name)) {
return x;
}
}
return -1;
}
int find_hash(const char *name)
{
int x;
_ARGCHK(name != NULL);
for (x = 0; x < TAB_SIZE; x++) {
if (hash_descriptor[x].name != NULL && strcmp(hash_descriptor[x].name, name) == 0) {
return x;
}
}
return -1;
}
int find_prng(const char *name)
{
int x;
_ARGCHK(name != NULL);
for (x = 0; x < TAB_SIZE; x++) {
if ((prng_descriptor[x].name != NULL) && strcmp(prng_descriptor[x].name, name) == 0) {
return x;
}
}
return -1;
}
int find_cipher_id(unsigned char ID)
{
int x;
for (x = 0; x < TAB_SIZE; x++) {
if (cipher_descriptor[x].ID == ID) {
return (cipher_descriptor[x].name == NULL) ? -1 : x;
}
}
return -1;
}
int find_hash_id(unsigned char ID)
{
int x;
for (x = 0; x < TAB_SIZE; x++) {
if (hash_descriptor[x].ID == ID) {
return (hash_descriptor[x].name == NULL) ? -1 : x;
}
}
return -1;
}
/* idea from Wayne Scott */
int find_cipher_any(const char *name, int blocklen, int keylen)
{
int x;
_ARGCHK(name != NULL);
x = find_cipher(name);
if (x != -1) return x;
for (x = 0; cipher_descriptor[x].name != NULL && x < TAB_SIZE; x++) {
if (blocklen <= (int)cipher_descriptor[x].block_length && keylen <= (int)cipher_descriptor[x].max_key_length) {
return x;
}
}
return -1;
}
int register_cipher(const struct _cipher_descriptor *cipher)
{
int x;
_ARGCHK(cipher != NULL);
/* is it already registered? */
for (x = 0; x < TAB_SIZE; x++) {
if (cipher_descriptor[x].name != NULL && cipher_descriptor[x].ID == cipher->ID) {
return x;
}
}
/* find a blank spot */
for (x = 0; x < TAB_SIZE; x++) {
if (cipher_descriptor[x].name == NULL) {
memcpy(&cipher_descriptor[x], cipher, sizeof(struct _cipher_descriptor));
return x;
}
}
/* no spot */
return -1;
}
int unregister_cipher(const struct _cipher_descriptor *cipher)
{
int x;
_ARGCHK(cipher != NULL);
/* is it already registered? */
for (x = 0; x < TAB_SIZE; x++) {
if (memcmp(&cipher_descriptor[x], cipher, sizeof(struct _cipher_descriptor)) == 0) {
cipher_descriptor[x].name = NULL;
cipher_descriptor[x].ID = 255;
return CRYPT_OK;
}
}
return CRYPT_ERROR;
}
int register_hash(const struct _hash_descriptor *hash)
{
int x;
_ARGCHK(hash != NULL);
/* is it already registered? */
for (x = 0; x < TAB_SIZE; x++) {
if (memcmp(&hash_descriptor[x], hash, sizeof(struct _hash_descriptor)) == 0) {
return x;
}
}
/* find a blank spot */
for (x = 0; x < TAB_SIZE; x++) {
if (hash_descriptor[x].name == NULL) {
memcpy(&hash_descriptor[x], hash, sizeof(struct _hash_descriptor));
return x;
}
}
/* no spot */
return -1;
}
int unregister_hash(const struct _hash_descriptor *hash)
{
int x;
_ARGCHK(hash != NULL);
/* is it already registered? */
for (x = 0; x < TAB_SIZE; x++) {
if (memcmp(&hash_descriptor[x], hash, sizeof(struct _hash_descriptor)) == 0) {
hash_descriptor[x].name = NULL;
return CRYPT_OK;
}
}
return CRYPT_ERROR;
}
int register_prng(const struct _prng_descriptor *prng)
{
int x;
_ARGCHK(prng != NULL);
/* is it already registered? */
for (x = 0; x < TAB_SIZE; x++) {
if (memcmp(&prng_descriptor[x], prng, sizeof(struct _prng_descriptor)) == 0) {
return x;
}
}
/* find a blank spot */
for (x = 0; x < TAB_SIZE; x++) {
if (prng_descriptor[x].name == NULL) {
memcpy(&prng_descriptor[x], prng, sizeof(struct _prng_descriptor));
return x;
}
}
/* no spot */
return -1;
}
int unregister_prng(const struct _prng_descriptor *prng)
{
int x;
_ARGCHK(prng != NULL);
/* is it already registered? */
for (x = 0; x < TAB_SIZE; x++) {
if (memcmp(&prng_descriptor[x], prng, sizeof(struct _prng_descriptor)) != 0) {
prng_descriptor[x].name = NULL;
return CRYPT_OK;
}
}
return CRYPT_ERROR;
}
int cipher_is_valid(int idx)
{
if (idx < 0 || idx >= TAB_SIZE || cipher_descriptor[idx].name == NULL) {
return CRYPT_INVALID_CIPHER;
}
return CRYPT_OK;
}
int hash_is_valid(int idx)
{
if (idx < 0 || idx >= TAB_SIZE || hash_descriptor[idx].name == NULL) {
return CRYPT_INVALID_HASH;
}
return CRYPT_OK;
}
int prng_is_valid(int idx)
{
if (idx < 0 || idx >= TAB_SIZE || prng_descriptor[idx].name == NULL) {
return CRYPT_INVALID_PRNG;
}
return CRYPT_OK;
}
const char *crypt_build_settings =
"LibTomCrypt " SCRYPT "\n\n"
"Endianess: "
#if defined(ENDIAN_NEUTRAL)
"neutral\n"
#elif defined(ENDIAN_LITTLE)
"little"
#if defined(ENDIAN_32BITWORD)
" (32-bit words)\n"
#else
" (64-bit words)\n"
#endif
#elif defined(ENDIAN_BIG)
"big"
#if defined(ENDIAN_32BITWORD)
" (32-bit words)\n"
#else
" (64-bit words)\n"
#endif
#endif
"Clean stack: "
#if defined(CLEAN_STACK)
"enabled\n"
#else
"disabled\n"
#endif
"Ciphers built-in:\n"
#if defined(BLOWFISH)
" Blowfish\n"
#endif
#if defined(RC2)
" RC2\n"
#endif
#if defined(RC5)
" RC5\n"
#endif
#if defined(RC6)
" RC6\n"
#endif
#if defined(SAFERP)
" Safer+\n"
#endif
#if defined(SAFER)
" Safer\n"
#endif
#if defined(RIJNDAEL)
" Rijndael\n"
#endif
#if defined(XTEA)
" XTEA\n"
#endif
#if defined(TWOFISH)
" Twofish "
#if defined(TWOFISH_SMALL) && defined(TWOFISH_TABLES)
"(small, tables)\n"
#elif defined(TWOFISH_SMALL)
"(small)\n"
#elif defined(TWOFISH_TABLES)
"(tables)\n"
#else
"\n"
#endif
#endif
#if defined(DES)
" DES\n"
#endif
#if defined(CAST5)
" CAST5\n"
#endif
#if defined(NOEKEON)
" Noekeon\n"
#endif
"\nHashes built-in:\n"
#if defined(SHA512)
" SHA-512\n"
#endif
#if defined(SHA384)
" SHA-384\n"
#endif
#if defined(SHA256)
" SHA-256\n"
#endif
#if defined(TIGER)
" TIGER\n"
#endif
#if defined(SHA1)
" SHA1\n"
#endif
#if defined(MD5)
" MD5\n"
#endif
#if defined(MD4)
" MD4\n"
#endif
#if defined(MD2)
" MD2\n"
#endif
#if defined(RIPEMD128)
" RIPEMD128\n"
#endif
"\nBlock Chaining Modes:\n"
#if defined(CFB)
" CFB\n"
#endif
#if defined(OFB)
" OFB\n"
#endif
#if defined(ECB)
" ECB\n"
#endif
#if defined(CBC)
" CBC\n"
#endif
#if defined(CTR)
" CTR\n"
#endif
"\nPRNG:\n"
#if defined(YARROW)
" Yarrow\n"
#endif
#if defined(SPRNG)
" SPRNG\n"
#endif
#if defined(RC4)
" RC4\n"
#endif
"\nPK Algs:\n"
#if defined(MRSA)
" RSA\n"
#endif
#if defined(MDH)
" DH\n"
#endif
#if defined(MECC)
" ECC\n"
#endif
#if defined(KR)
" KR\n"
#endif
"\nCompiler:\n"
#if defined(WIN32)
" WIN32 platform detected.\n"
#endif
#if defined(__CYGWIN__)
" CYGWIN Detected.\n"
#endif
#if defined(__DJGPP__)
" DJGPP Detected.\n"
#endif
#if defined(_MSC_VER)
" MSVC compiler detected.\n"
#endif
#if defined(__GNUC__)
" GCC compiler detected.\n"
#endif
"\nVarious others: "
#if defined(GF)
" GF "
#endif
#if defined(BASE64)
" BASE64 "
#endif
#if defined(MPI)
" MPI "
#endif
#if defined(HMAC)
" HMAC "
#endif
#if defined(TRY_UNRANDOM_FIRST)
" TRY_UNRANDOM_FIRST "
#endif
#if defined(LTC_TEST)
" LTC_TEST "
#endif
"\n"
"\n\n\n"
;