import OpenSSL-1.0.0a

1 files changed, 12 insertions, 80 deletions

diff --git a/lib/libssl/src/crypto/modes/ctr128.c b/lib/libssl/src/crypto/modes/ctr128.c
index ee642c5863c..932037f5514 100644
--- a/lib/libssl/src/crypto/modes/ctr128.c
+++ b/lib/libssl/src/crypto/modes/ctr128.c
@@ -48,8 +48,7 @@
  *
  */
 
-#include <openssl/crypto.h>
-#include "modes_lcl.h"
+#include "modes.h"
 #include <string.h>
 
 #ifndef MODES_DEBUG
@@ -59,6 +58,17 @@
 #endif
 #include <assert.h>
 
+typedef unsigned int u32;
+typedef unsigned char u8;
+
+#define STRICT_ALIGNMENT
+#if defined(__i386)	|| defined(__i386__)	|| \
+    defined(__x86_64)	|| defined(__x86_64__)	|| \
+    defined(_M_IX86)	|| defined(_M_AMD64)	|| defined(_M_X64) || \
+    defined(__s390__)	|| defined(__s390x__)
+#  undef STRICT_ALIGNMENT
+#endif
+
 /* NOTE: the IV/counter CTR mode is big-endian.  The code itself
  * is endian-neutral. */
 
@@ -172,81 +182,3 @@ void CRYPTO_ctr128_encrypt(const unsigned char *in, unsigned char *out,
 
 	*num=n;
 }
-
-/* increment upper 96 bits of 128-bit counter by 1 */
-static void ctr96_inc(unsigned char *counter) {
-	u32 n=12;
-	u8  c;
-
-	do {
-		--n;
-		c = counter[n];
-		++c;
-		counter[n] = c;
-		if (c) return;
-	} while (n);
-}
-
-void CRYPTO_ctr128_encrypt_ctr32(const unsigned char *in, unsigned char *out,
-			size_t len, const void *key,
-			unsigned char ivec[16], unsigned char ecount_buf[16],
-			unsigned int *num, ctr128_f func)
-{
-	unsigned int n,ctr32;
-
-	assert(in && out && key && ecount_buf && num);
-	assert(*num < 16);
-
-	n = *num;
-
-	while (n && len) {
-		*(out++) = *(in++) ^ ecount_buf[n];
-		--len;
-		n = (n+1) % 16;
-	}
-
-	ctr32 = GETU32(ivec+12);
-	while (len>=16) {
-		size_t blocks = len/16;
-		/*
-		 * 1<<28 is just a not-so-small yet not-so-large number...
-		 * Below condition is practically never met, but it has to
-		 * be checked for code correctness.
-		 */
-		if (sizeof(size_t)>sizeof(unsigned int) && blocks>(1U<<28))
-			blocks = (1U<<28);
-		/*
-		 * As (*func) operates on 32-bit counter, caller
-		 * has to handle overflow. 'if' below detects the
-		 * overflow, which is then handled by limiting the
-		 * amount of blocks to the exact overflow point...
-		 */
-		ctr32 += (u32)blocks;
-		if (ctr32 < blocks) {
-			blocks -= ctr32;
-			ctr32   = 0;
-		}
-		(*func)(in,out,blocks,key,ivec);
-		/* (*ctr) does not update ivec, caller does: */
-		PUTU32(ivec+12,ctr32);
-		/* ... overflow was detected, propogate carry. */
-		if (ctr32 == 0)	ctr96_inc(ivec);
-		blocks *= 16;
-		len -= blocks;
-		out += blocks;
-		in  += blocks;
-	}
-	if (len) {
-		memset(ecount_buf,0,16);
-		(*func)(ecount_buf,ecount_buf,1,key,ivec);
-		++ctr32;
-		PUTU32(ivec+12,ctr32);
-		if (ctr32 == 0)	ctr96_inc(ivec);
-		while (len--) {
-			out[n] = in[n] ^ ecount_buf[n];
-			++n;
-		}
-	}
-
-	*num=n;
-}