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See ChangeLog: Sun Jan 17 11:04:33 CET 1999 Werner Koch

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This commit is contained in:
Werner Koch 1999-01-17 10:06:03 +00:00
parent 38008c1c20
commit befacf7efa
19 changed files with 199 additions and 156 deletions
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25
cipher/twofish.c
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@ -19,14 +19,14 @@
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h> /* for assert() */
#include <string.h> /* for memcmp() */
#include "types.h" /* for byte and u32 typedefs */
#include "util.h" /* for log_fatal() */
#include "errors.h"
/* Prototype for the self-test function. */
static void selftest(void);
static const char *selftest(void);
/* Macros used by the info function. */
#define FNCCAST_SETKEY(f) ((int(*)(void*, byte*, unsigned))(f))
@ -456,17 +456,23 @@ twofish_setkey (TWOFISH_context *ctx, const byte *key, const unsigned keylen)
/* Temporary for CALC_S. */
byte tmp;
/* Flag for self-test. */
/* Flags for self-test. */
static int initialized = 0;
static const char *selftest_failed=0;
/* Check key length. */
assert (keylen == 16);
if( keylen != 16 )
return G10ERR_WRONG_KEYLEN;
/* Do self-test if necessary. */
if (!initialized) {
initialized = 1;
selftest ();
selftest_failed = selftest ();
if( selftest_failed )
fprintf(stderr, "%s\n", selftest_failed );
}
if( selftest_failed )
return G10ERR_SELFTEST_FAILED;
/* Compute the S vector. The magic numbers are the entries of the RS
* matrix, preprocessed through poly_to_exp. The numbers in the comments
@ -709,7 +715,7 @@ twofish_decrypt (const TWOFISH_context *ctx, byte *out, const byte *in)
/* Test a single encryption and decryption, as a sanity check. */
static void
static const char*
selftest (void)
{
TWOFISH_context ctx; /* Expanded key. */
@ -736,10 +742,11 @@ selftest (void)
twofish_setkey (&ctx, key, sizeof(key));
twofish_encrypt (&ctx, scratch, plaintext);
if (memcmp (scratch, ciphertext, sizeof (ciphertext)))
log_fatal ("Twofish test encryption failed\n");
return "Twofish test encryption failed.";
twofish_decrypt (&ctx, scratch, scratch);
if (memcmp (scratch, plaintext, sizeof (plaintext)))
log_fatal ("Twofish test decryption failed\n");
return "Twofish test decryption failed.";
return NULL;
}
/* More complete test program. This does a thousand encryptions and