X-Git-Url: https://pd.if.org/git/?p=zpackage;a=blobdiff_plain;f=libtomcrypt%2Fsrc%2Fciphers%2Frc5.c;fp=libtomcrypt%2Fsrc%2Fciphers%2Frc5.c;h=0000000000000000000000000000000000000000;hp=bda537f154f536675d8eb8ef71b2c1bbd1ed39bb;hb=8525b30e7685c63751f8f6e71d0dbbceeb1280f0;hpb=d6aefd8ebda828ed4c9fef447f96882c1db52ce1

diff --git a/libtomcrypt/src/ciphers/rc5.c b/libtomcrypt/src/ciphers/rc5.c
deleted file mode 100644
index bda537f..0000000
--- a/libtomcrypt/src/ciphers/rc5.c
+++ /dev/null
@@ -1,322 +0,0 @@
-/* LibTomCrypt, modular cryptographic library -- Tom St Denis
- *
- * LibTomCrypt is a library that provides various cryptographic
- * algorithms in a highly modular and flexible manner.
- *
- * The library is free for all purposes without any express
- * guarantee it works.
- */
-
-/**
-   @file rc5.c
-   LTC_RC5 code by Tom St Denis
-*/
-
-#include "tomcrypt.h"
-
-#ifdef LTC_RC5
-
-const struct ltc_cipher_descriptor rc5_desc =
-{
-    "rc5",
-    2,
-    8, 128, 8, 12,
-    &rc5_setup,
-    &rc5_ecb_encrypt,
-    &rc5_ecb_decrypt,
-    &rc5_test,
-    &rc5_done,
-    &rc5_keysize,
-    NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
-};
-
-static const ulong32 stab[50] = {
-0xb7e15163UL, 0x5618cb1cUL, 0xf45044d5UL, 0x9287be8eUL, 0x30bf3847UL, 0xcef6b200UL, 0x6d2e2bb9UL, 0x0b65a572UL,
-0xa99d1f2bUL, 0x47d498e4UL, 0xe60c129dUL, 0x84438c56UL, 0x227b060fUL, 0xc0b27fc8UL, 0x5ee9f981UL, 0xfd21733aUL,
-0x9b58ecf3UL, 0x399066acUL, 0xd7c7e065UL, 0x75ff5a1eUL, 0x1436d3d7UL, 0xb26e4d90UL, 0x50a5c749UL, 0xeedd4102UL,
-0x8d14babbUL, 0x2b4c3474UL, 0xc983ae2dUL, 0x67bb27e6UL, 0x05f2a19fUL, 0xa42a1b58UL, 0x42619511UL, 0xe0990ecaUL,
-0x7ed08883UL, 0x1d08023cUL, 0xbb3f7bf5UL, 0x5976f5aeUL, 0xf7ae6f67UL, 0x95e5e920UL, 0x341d62d9UL, 0xd254dc92UL,
-0x708c564bUL, 0x0ec3d004UL, 0xacfb49bdUL, 0x4b32c376UL, 0xe96a3d2fUL, 0x87a1b6e8UL, 0x25d930a1UL, 0xc410aa5aUL,
-0x62482413UL, 0x007f9dccUL
-};
-
- /**
-    Initialize the LTC_RC5 block cipher
-    @param key The symmetric key you wish to pass
-    @param keylen The key length in bytes
-    @param num_rounds The number of rounds desired (0 for default)
-    @param skey The key in as scheduled by this function.
-    @return CRYPT_OK if successful
- */
-#ifdef LTC_CLEAN_STACK
-static int _rc5_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey)
-#else
-int rc5_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey)
-#endif
-{
-    ulong32 L[64], *S, A, B, i, j, v, s, t, l;
-
-    LTC_ARGCHK(skey != NULL);
-    LTC_ARGCHK(key  != NULL);
-
-    /* test parameters */
-    if (num_rounds == 0) {
-       num_rounds = rc5_desc.default_rounds;
-    }
-
-    if (num_rounds < 12 || num_rounds > 24) {
-       return CRYPT_INVALID_ROUNDS;
-    }
-
-    /* key must be between 64 and 1024 bits */
-    if (keylen < 8 || keylen > 128) {
-       return CRYPT_INVALID_KEYSIZE;
-    }
-
-    skey->rc5.rounds = num_rounds;
-    S = skey->rc5.K;
-
-    /* copy the key into the L array */
-    for (A = i = j = 0; i < (ulong32)keylen; ) {
-        A = (A << 8) | ((ulong32)(key[i++] & 255));
-        if ((i & 3) == 0) {
-           L[j++] = BSWAP(A);
-           A = 0;
-        }
-    }
-
-    if ((keylen & 3) != 0) {
-       A <<= (ulong32)((8 * (4 - (keylen&3))));
-       L[j++] = BSWAP(A);
-    }
-
-    /* setup the S array */
-    t = (ulong32)(2 * (num_rounds + 1));
-    XMEMCPY(S, stab, t * sizeof(*S));
-
-    /* mix buffer */
-    s = 3 * MAX(t, j);
-    l = j;
-    for (A = B = i = j = v = 0; v < s; v++) {
-        A = S[i] = ROLc(S[i] + A + B, 3);
-        B = L[j] = ROL(L[j] + A + B, (A+B));
-        if (++i == t) { i = 0; }
-        if (++j == l) { j = 0; }
-    }
-    return CRYPT_OK;
-}
-
-#ifdef LTC_CLEAN_STACK
-int rc5_setup(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey)
-{
-   int x;
-   x = _rc5_setup(key, keylen, num_rounds, skey);
-   burn_stack(sizeof(ulong32) * 122 + sizeof(int));
-   return x;
-}
-#endif
-
-/**
-  Encrypts a block of text with LTC_RC5
-  @param pt The input plaintext (8 bytes)
-  @param ct The output ciphertext (8 bytes)
-  @param skey The key as scheduled
-  @return CRYPT_OK if successful
-*/
-#ifdef LTC_CLEAN_STACK
-static int _rc5_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey)
-#else
-int rc5_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey)
-#endif
-{
-   ulong32 A, B, *K;
-   int r;
-   LTC_ARGCHK(skey != NULL);
-   LTC_ARGCHK(pt   != NULL);
-   LTC_ARGCHK(ct   != NULL);
-
-   LOAD32L(A, &pt[0]);
-   LOAD32L(B, &pt[4]);
-   A += skey->rc5.K[0];
-   B += skey->rc5.K[1];
-   K  = skey->rc5.K + 2;
-
-   if ((skey->rc5.rounds & 1) == 0) {
-      for (r = 0; r < skey->rc5.rounds; r += 2) {
-          A = ROL(A ^ B, B) + K[0];
-          B = ROL(B ^ A, A) + K[1];
-          A = ROL(A ^ B, B) + K[2];
-          B = ROL(B ^ A, A) + K[3];
-          K += 4;
-      }
-   } else {
-      for (r = 0; r < skey->rc5.rounds; r++) {
-          A = ROL(A ^ B, B) + K[0];
-          B = ROL(B ^ A, A) + K[1];
-          K += 2;
-      }
-   }
-   STORE32L(A, &ct[0]);
-   STORE32L(B, &ct[4]);
-
-   return CRYPT_OK;
-}
-
-#ifdef LTC_CLEAN_STACK
-int rc5_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey)
-{
-   int err = _rc5_ecb_encrypt(pt, ct, skey);
-   burn_stack(sizeof(ulong32) * 2 + sizeof(int));
-   return err;
-}
-#endif
-
-/**
-  Decrypts a block of text with LTC_RC5
-  @param ct The input ciphertext (8 bytes)
-  @param pt The output plaintext (8 bytes)
-  @param skey The key as scheduled
-  @return CRYPT_OK if successful
-*/
-#ifdef LTC_CLEAN_STACK
-static int _rc5_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey)
-#else
-int rc5_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey)
-#endif
-{
-   ulong32 A, B, *K;
-   int r;
-   LTC_ARGCHK(skey != NULL);
-   LTC_ARGCHK(pt   != NULL);
-   LTC_ARGCHK(ct   != NULL);
-
-   LOAD32L(A, &ct[0]);
-   LOAD32L(B, &ct[4]);
-   K = skey->rc5.K + (skey->rc5.rounds << 1);
-
-   if ((skey->rc5.rounds & 1) == 0) {
-       K -= 2;
-       for (r = skey->rc5.rounds - 1; r >= 0; r -= 2) {
-          B = ROR(B - K[3], A) ^ A;
-          A = ROR(A - K[2], B) ^ B;
-          B = ROR(B - K[1], A) ^ A;
-          A = ROR(A - K[0], B) ^ B;
-          K -= 4;
-        }
-   } else {
-      for (r = skey->rc5.rounds - 1; r >= 0; r--) {
-          B = ROR(B - K[1], A) ^ A;
-          A = ROR(A - K[0], B) ^ B;
-          K -= 2;
-      }
-   }
-   A -= skey->rc5.K[0];
-   B -= skey->rc5.K[1];
-   STORE32L(A, &pt[0]);
-   STORE32L(B, &pt[4]);
-
-   return CRYPT_OK;
-}
-
-#ifdef LTC_CLEAN_STACK
-int rc5_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey)
-{
-   int err = _rc5_ecb_decrypt(ct, pt, skey);
-   burn_stack(sizeof(ulong32) * 2 + sizeof(int));
-   return err;
-}
-#endif
-
-/**
-  Performs a self-test of the LTC_RC5 block cipher
-  @return CRYPT_OK if functional, CRYPT_NOP if self-test has been disabled
-*/
-int rc5_test(void)
-{
- #ifndef LTC_TEST
-    return CRYPT_NOP;
- #else
-   static const struct {
-       unsigned char key[16], pt[8], ct[8];
-   } tests[] = {
-   {
-       { 0x91, 0x5f, 0x46, 0x19, 0xbe, 0x41, 0xb2, 0x51,
-         0x63, 0x55, 0xa5, 0x01, 0x10, 0xa9, 0xce, 0x91 },
-       { 0x21, 0xa5, 0xdb, 0xee, 0x15, 0x4b, 0x8f, 0x6d },
-       { 0xf7, 0xc0, 0x13, 0xac, 0x5b, 0x2b, 0x89, 0x52 }
-   },
-   {
-       { 0x78, 0x33, 0x48, 0xe7, 0x5a, 0xeb, 0x0f, 0x2f,
-         0xd7, 0xb1, 0x69, 0xbb, 0x8d, 0xc1, 0x67, 0x87 },
-       { 0xF7, 0xC0, 0x13, 0xAC, 0x5B, 0x2B, 0x89, 0x52 },
-       { 0x2F, 0x42, 0xB3, 0xB7, 0x03, 0x69, 0xFC, 0x92 }
-   },
-   {
-       { 0xDC, 0x49, 0xdb, 0x13, 0x75, 0xa5, 0x58, 0x4f,
-         0x64, 0x85, 0xb4, 0x13, 0xb5, 0xf1, 0x2b, 0xaf },
-       { 0x2F, 0x42, 0xB3, 0xB7, 0x03, 0x69, 0xFC, 0x92 },
-       { 0x65, 0xc1, 0x78, 0xb2, 0x84, 0xd1, 0x97, 0xcc }
-   }
-   };
-   unsigned char tmp[2][8];
-   int x, y, err;
-   symmetric_key key;
-
-   for (x = 0; x < (int)(sizeof(tests) / sizeof(tests[0])); x++) {
-      /* setup key */
-      if ((err = rc5_setup(tests[x].key, 16, 12, &key)) != CRYPT_OK) {
-         return err;
-      }
-
-      /* encrypt and decrypt */
-      rc5_ecb_encrypt(tests[x].pt, tmp[0], &key);
-      rc5_ecb_decrypt(tmp[0], tmp[1], &key);
-
-      /* compare */
-      if (compare_testvector(tmp[0], 8, tests[x].ct, 8, "RC5 Encrypt", x) != 0 ||
-            compare_testvector(tmp[1], 8, tests[x].pt, 8, "RC5 Decrypt", x) != 0) {
-         return CRYPT_FAIL_TESTVECTOR;
-      }
-
-      /* now see if we can encrypt all zero bytes 1000 times, decrypt and come back where we started */
-      for (y = 0; y < 8; y++) tmp[0][y] = 0;
-      for (y = 0; y < 1000; y++) rc5_ecb_encrypt(tmp[0], tmp[0], &key);
-      for (y = 0; y < 1000; y++) rc5_ecb_decrypt(tmp[0], tmp[0], &key);
-      for (y = 0; y < 8; y++) if (tmp[0][y] != 0) return CRYPT_FAIL_TESTVECTOR;
-   }
-   return CRYPT_OK;
-  #endif
-}
-
-/** Terminate the context
-   @param skey    The scheduled key
-*/
-void rc5_done(symmetric_key *skey)
-{
-  LTC_UNUSED_PARAM(skey);
-}
-
-/**
-  Gets suitable key size
-  @param keysize [in/out] The length of the recommended key (in bytes).  This function will store the suitable size back in this variable.
-  @return CRYPT_OK if the input key size is acceptable.
-*/
-int rc5_keysize(int *keysize)
-{
-   LTC_ARGCHK(keysize != NULL);
-   if (*keysize < 8) {
-      return CRYPT_INVALID_KEYSIZE;
-   } else if (*keysize > 128) {
-      *keysize = 128;
-   }
-   return CRYPT_OK;
-}
-
-#endif
-
-
-
-
-/* ref:         $Format:%D$ */
-/* git commit:  $Format:%H$ */
-/* commit time: $Format:%ai$ */