remove ltc ciphers des safer xtea rc4

[zpackage] / libtomcrypt / src / stream / rc4 / rc4_stream.c

diff --git a/libtomcrypt/src/stream/rc4/rc4_stream.c b/libtomcrypt/src/stream/rc4/rc4_stream.c
deleted file mode 100644 (file)
index 178489d..0000000
--- a/libtomcrypt/src/stream/rc4/rc4_stream.c
+++ /dev/null
@@ -1,111 +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.
- */
-
-#include "tomcrypt.h"
-
-#ifdef LTC_RC4_STREAM
-
-/**
-   Initialize an RC4 context (only the key)
-   @param st        [out] The destination of the RC4 state
-   @param key       The secret key
-   @param keylen    The length of the secret key (8 - 256 bytes)
-   @return CRYPT_OK if successful
-*/
-int rc4_stream_setup(rc4_state *st, const unsigned char *key, unsigned long keylen)
-{
-   unsigned char tmp, *s;
-   int x, y;
-   unsigned long j;
-
-   LTC_ARGCHK(st  != NULL);
-   LTC_ARGCHK(key != NULL);
-   LTC_ARGCHK(keylen >= 5); /* 40-2048 bits */
-
-   s = st->buf;
-   for (x = 0; x < 256; x++) {
-      s[x] = x;
-   }
-
-   for (j = x = y = 0; x < 256; x++) {
-      y = (y + s[x] + key[j++]) & 255;
-      if (j == keylen) {
-         j = 0;
-      }
-      tmp = s[x]; s[x] = s[y]; s[y] = tmp;
-   }
-   st->x = 0;
-   st->y = 0;
-
-   return CRYPT_OK;
-}
-
-/**
-   Encrypt (or decrypt) bytes of ciphertext (or plaintext) with RC4
-   @param st      The RC4 state
-   @param in      The plaintext (or ciphertext)
-   @param inlen   The length of the input (octets)
-   @param out     [out] The ciphertext (or plaintext), length inlen
-   @return CRYPT_OK if successful
-*/
-int rc4_stream_crypt(rc4_state *st, const unsigned char *in, unsigned long inlen, unsigned char *out)
-{
-   unsigned char x, y, *s, tmp;
-
-   LTC_ARGCHK(st  != NULL);
-   LTC_ARGCHK(in  != NULL);
-   LTC_ARGCHK(out != NULL);
-
-   x = st->x;
-   y = st->y;
-   s = st->buf;
-   while (inlen--) {
-      x = (x + 1) & 255;
-      y = (y + s[x]) & 255;
-      tmp = s[x]; s[x] = s[y]; s[y] = tmp;
-      tmp = (s[x] + s[y]) & 255;
-      *out++ = *in++ ^ s[tmp];
-   }
-   st->x = x;
-   st->y = y;
-   return CRYPT_OK;
-}
-
-/**
-  Generate a stream of random bytes via RC4
-  @param st      The RC420 state
-  @param out     [out] The output buffer
-  @param outlen  The output length
-  @return CRYPT_OK on success
- */
-int rc4_stream_keystream(rc4_state *st, unsigned char *out, unsigned long outlen)
-{
-   if (outlen == 0) return CRYPT_OK; /* nothing to do */
-   LTC_ARGCHK(out != NULL);
-   XMEMSET(out, 0, outlen);
-   return rc4_stream_crypt(st, out, outlen, out);
-}
-
-/**
-  Terminate and clear RC4 state
-  @param st      The RC4 state
-  @return CRYPT_OK on success
-*/
-int rc4_stream_done(rc4_state *st)
-{
-   LTC_ARGCHK(st != NULL);
-   XMEMSET(st, 0, sizeof(rc4_state));
-   return CRYPT_OK;
-}
-
-#endif
-
-/* ref:         $Format:%D$ */
-/* git commit:  $Format:%H$ */
-/* commit time: $Format:%ai$ */