[10261] OpenSSL のときだけ arc4random.c/h と chacha.c/h が使われるようにした (ttssh2-commit) - Tera Term

Revision: 10261
          https://osdn.net/projects/ttssh2/scm/svn/commits/10261
Author:   nmaya
Date:     2022-09-11 14:26:32 +0900 (Sun, 11 Sep 2022)
Log Message:
-----------
OpenSSL のときだけ arc4random.c/h と chacha.c/h が使われるようにした

- LibreSSL のときは compat/stdlib.h を include し LibreSSL の関数を利用する

- RAND_bytes() を呼ぶと LibreSSL の crypto/rand/rand_lib.c の RAND_bytes()
から TTSSH の arc4random.c の arc4random_buf() が呼ばれる状態を解消

Modified Paths:
--------------
    trunk/ttssh2/ttxssh/arc4random.c
    trunk/ttssh2/ttxssh/chacha.c
    trunk/ttssh2/ttxssh/ed25519_crypto_api.h
    trunk/ttssh2/ttxssh/ttxssh.c

-------------- next part --------------
Modified: trunk/ttssh2/ttxssh/arc4random.c
===================================================================

--- trunk/ttssh2/ttxssh/arc4random.c	2022-09-11 05:24:19 UTC (rev 10260)
+++ trunk/ttssh2/ttxssh/arc4random.c	2022-09-11 05:26:32 UTC (rev 10261)
@@ -40,6 +40,14 @@
 
 #define KEYSTREAM_ONLY
 #include "ttxssh.h"
+
+/*
+ * \x82\xB1\x82̃\\x81[\x83X\x82\xCD OpenSSL \x82̂Ƃ\xAB\x82\xBE\x82\xAF\x8Eg\x82\xED\x82\xEA\x82\xE9
+ * LibreSSL \x82̂Ƃ\xAB\x82\xCD libressl/crypto/compat/arc4random.c,
+ * crypto/compat/getentropy_win.c \x82\xAA\x8Eg\x82\xED\x82\xEA\x82\xE9
+ */
+#ifndef LIBRESSL_VERSION_NUMBER
+
 #include "arc4random.h"
 #include "chacha.h"
 
@@ -214,3 +222,5 @@
 	_rs_random_buf(buf, n);
 	_ARC4_UNLOCK();
 }
+
+#endif /* LIBRESSL_VERSION_NUMBER */

Modified: trunk/ttssh2/ttxssh/chacha.c
===================================================================
--- trunk/ttssh2/ttxssh/chacha.c	2022-09-11 05:24:19 UTC (rev 10260)
+++ trunk/ttssh2/ttxssh/chacha.c	2022-09-11 05:26:32 UTC (rev 10261)
@@ -1,221 +1,230 @@
-/* Imported via OpenSSH-7.6p1, TeraTerm Project doda */
-
-/*
-chacha-merged.c version 20080118
-D. J. Bernstein
-Public domain.
-*/
-
-// #include "includes.h"
-
-#include "chacha.h"
-
-/* $OpenBSD: chacha.c,v 1.1 2013/11/21 00:45:44 djm Exp $ */
-
-typedef unsigned char u8;
-typedef unsigned int u32;
-
-typedef struct chacha_ctx chacha_ctx;
-
-#define U8C(v) (v##U)
-#define U32C(v) (v##U)
-
-#define U8V(v) ((u8)(v) & U8C(0xFF))
-#define U32V(v) ((u32)(v) & U32C(0xFFFFFFFF))
-
-#define ROTL32(v, n) \
-  (U32V((v) << (n)) | ((v) >> (32 - (n))))
-
-#define U8TO32_LITTLE(p) \
-  (((u32)((p)[0])      ) | \
-   ((u32)((p)[1]) <<  8) | \
-   ((u32)((p)[2]) << 16) | \
-   ((u32)((p)[3]) << 24))
-
-#define U32TO8_LITTLE(p, v) \
-  do { \
-    (p)[0] = U8V((v)      ); \
-    (p)[1] = U8V((v) >>  8); \
-    (p)[2] = U8V((v) >> 16); \
-    (p)[3] = U8V((v) >> 24); \
-  } while (0)
-
-#define ROTATE(v,c) (ROTL32(v,c))
-#define XOR(v,w) ((v) ^ (w))
-#define PLUS(v,w) (U32V((v) + (w)))
-#define PLUSONE(v) (PLUS((v),1))
-
-#define QUARTERROUND(a,b,c,d) \
-  a = PLUS(a,b); d = ROTATE(XOR(d,a),16); \
-  c = PLUS(c,d); b = ROTATE(XOR(b,c),12); \
-  a = PLUS(a,b); d = ROTATE(XOR(d,a), 8); \
-  c = PLUS(c,d); b = ROTATE(XOR(b,c), 7);
-
-static const char sigma[16] = "expand 32-byte k";
-static const char tau[16] = "expand 16-byte k";
-
-void
-chacha_keysetup(chacha_ctx *x, const u8 *k, u32 kbits)
-{
-  const char *constants;
-
-  x->input[4] = U8TO32_LITTLE(k + 0);
-  x->input[5] = U8TO32_LITTLE(k + 4);
-  x->input[6] = U8TO32_LITTLE(k + 8);
-  x->input[7] = U8TO32_LITTLE(k + 12);
-  if (kbits == 256) { /* recommended */
-    k += 16;
-    constants = sigma;
-  } else { /* kbits == 128 */
-    constants = tau;
-  }
-  x->input[8] = U8TO32_LITTLE(k + 0);
-  x->input[9] = U8TO32_LITTLE(k + 4);
-  x->input[10] = U8TO32_LITTLE(k + 8);
-  x->input[11] = U8TO32_LITTLE(k + 12);
-  x->input[0] = U8TO32_LITTLE(constants + 0);
-  x->input[1] = U8TO32_LITTLE(constants + 4);
-  x->input[2] = U8TO32_LITTLE(constants + 8);
-  x->input[3] = U8TO32_LITTLE(constants + 12);
-}
-
-void
-chacha_ivsetup(chacha_ctx *x, const u8 *iv, const u8 *counter)
-{
-  x->input[12] = counter == NULL ? 0 : U8TO32_LITTLE(counter + 0);
-  x->input[13] = counter == NULL ? 0 : U8TO32_LITTLE(counter + 4);
-  x->input[14] = U8TO32_LITTLE(iv + 0);
-  x->input[15] = U8TO32_LITTLE(iv + 4);
-}
-
-void
-chacha_encrypt_bytes(chacha_ctx *x, const u8 *m, u8 *c, u32 bytes)
-{
-  u32 x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15;
-  u32 j0, j1, j2, j3, j4, j5, j6, j7, j8, j9, j10, j11, j12, j13, j14, j15;
-  u8 *ctarget = NULL;
-  u8 tmp[64];
-  u_int i;
-
-  if (!bytes) return;
-
-  j0 = x->input[0];
-  j1 = x->input[1];
-  j2 = x->input[2];
-  j3 = x->input[3];
-  j4 = x->input[4];
-  j5 = x->input[5];
-  j6 = x->input[6];
-  j7 = x->input[7];
-  j8 = x->input[8];
-  j9 = x->input[9];
-  j10 = x->input[10];
-  j11 = x->input[11];
-  j12 = x->input[12];
-  j13 = x->input[13];
-  j14 = x->input[14];
-  j15 = x->input[15];
-
-  for (;;) {
-    if (bytes < 64) {
-      for (i = 0;i < bytes;++i) tmp[i] = m[i];
-      m = tmp;
-      ctarget = c;
-      c = tmp;
-    }
-    x0 = j0;
-    x1 = j1;
-    x2 = j2;
-    x3 = j3;
-    x4 = j4;
-    x5 = j5;
-    x6 = j6;
-    x7 = j7;
-    x8 = j8;
-    x9 = j9;
-    x10 = j10;
-    x11 = j11;
-    x12 = j12;
-    x13 = j13;
-    x14 = j14;
-    x15 = j15;
-    for (i = 20;i > 0;i -= 2) {
-      QUARTERROUND( x0, x4, x8,x12)
-      QUARTERROUND( x1, x5, x9,x13)
-      QUARTERROUND( x2, x6,x10,x14)
-      QUARTERROUND( x3, x7,x11,x15)
-      QUARTERROUND( x0, x5,x10,x15)
-      QUARTERROUND( x1, x6,x11,x12)
-      QUARTERROUND( x2, x7, x8,x13)
-      QUARTERROUND( x3, x4, x9,x14)
-    }
-    x0 = PLUS(x0,j0);
-    x1 = PLUS(x1,j1);
-    x2 = PLUS(x2,j2);
-    x3 = PLUS(x3,j3);
-    x4 = PLUS(x4,j4);
-    x5 = PLUS(x5,j5);
-    x6 = PLUS(x6,j6);
-    x7 = PLUS(x7,j7);
-    x8 = PLUS(x8,j8);
-    x9 = PLUS(x9,j9);
-    x10 = PLUS(x10,j10);
-    x11 = PLUS(x11,j11);
-    x12 = PLUS(x12,j12);
-    x13 = PLUS(x13,j13);
-    x14 = PLUS(x14,j14);
-    x15 = PLUS(x15,j15);
-
-    x0 = XOR(x0,U8TO32_LITTLE(m + 0));
-    x1 = XOR(x1,U8TO32_LITTLE(m + 4));
-    x2 = XOR(x2,U8TO32_LITTLE(m + 8));
-    x3 = XOR(x3,U8TO32_LITTLE(m + 12));
-    x4 = XOR(x4,U8TO32_LITTLE(m + 16));
-    x5 = XOR(x5,U8TO32_LITTLE(m + 20));
-    x6 = XOR(x6,U8TO32_LITTLE(m + 24));
-    x7 = XOR(x7,U8TO32_LITTLE(m + 28));
-    x8 = XOR(x8,U8TO32_LITTLE(m + 32));
-    x9 = XOR(x9,U8TO32_LITTLE(m + 36));
-    x10 = XOR(x10,U8TO32_LITTLE(m + 40));
-    x11 = XOR(x11,U8TO32_LITTLE(m + 44));
-    x12 = XOR(x12,U8TO32_LITTLE(m + 48));
-    x13 = XOR(x13,U8TO32_LITTLE(m + 52));
-    x14 = XOR(x14,U8TO32_LITTLE(m + 56));
-    x15 = XOR(x15,U8TO32_LITTLE(m + 60));
-
-    j12 = PLUSONE(j12);
-    if (!j12) {
-      j13 = PLUSONE(j13);
-      /* stopping at 2^70 bytes per nonce is user's responsibility */
-    }
-
-    U32TO8_LITTLE(c + 0,x0);
-    U32TO8_LITTLE(c + 4,x1);
-    U32TO8_LITTLE(c + 8,x2);
-    U32TO8_LITTLE(c + 12,x3);
-    U32TO8_LITTLE(c + 16,x4);
-    U32TO8_LITTLE(c + 20,x5);
-    U32TO8_LITTLE(c + 24,x6);
-    U32TO8_LITTLE(c + 28,x7);
-    U32TO8_LITTLE(c + 32,x8);
-    U32TO8_LITTLE(c + 36,x9);
-    U32TO8_LITTLE(c + 40,x10);
-    U32TO8_LITTLE(c + 44,x11);
-    U32TO8_LITTLE(c + 48,x12);
-    U32TO8_LITTLE(c + 52,x13);
-    U32TO8_LITTLE(c + 56,x14);
-    U32TO8_LITTLE(c + 60,x15);
-
-    if (bytes <= 64) {
-      if (bytes < 64) {
-        for (i = 0;i < bytes;++i) ctarget[i] = c[i];
-      }
-      x->input[12] = j12;
-      x->input[13] = j13;
-      return;
-    }
-    bytes -= 64;
-    c += 64;
-    m += 64;
-  }
-}
+/* Imported via OpenSSH-7.6p1, TeraTerm Project doda */
+
+/*
+chacha-merged.c version 20080118
+D. J. Bernstein
+Public domain.
+*/
+
+// #include "includes.h"
+
+/*
+ * \x82\xB1\x82̃\\x81[\x83X\x82\xCD OpenSSL \x82̂Ƃ\xAB\x82\xBE\x82\xAF\x8Eg\x82\xED\x82\xEA\x82\xE9
+ * LibreSSL \x82̂Ƃ\xAB\x82\xCD libressl/crypto/compat/chacha_private.h \x82\xAA\x8Eg\x82\xED\x82\xEA\x82\xE9
+ */
+#include <openssl/opensslv.h> /* For OPENSSL_VERSION_NUMBER */
+#ifndef LIBRESSL_VERSION_NUMBER
+
+#include "chacha.h"
+
+/* $OpenBSD: chacha.c,v 1.1 2013/11/21 00:45:44 djm Exp $ */
+
+typedef unsigned char u8;
+typedef unsigned int u32;
+
+typedef struct chacha_ctx chacha_ctx;
+
+#define U8C(v) (v##U)
+#define U32C(v) (v##U)
+
+#define U8V(v) ((u8)(v) & U8C(0xFF))
+#define U32V(v) ((u32)(v) & U32C(0xFFFFFFFF))
+
+#define ROTL32(v, n) \
+  (U32V((v) << (n)) | ((v) >> (32 - (n))))
+
+#define U8TO32_LITTLE(p) \
+  (((u32)((p)[0])      ) | \
+   ((u32)((p)[1]) <<  8) | \
+   ((u32)((p)[2]) << 16) | \
+   ((u32)((p)[3]) << 24))
+
+#define U32TO8_LITTLE(p, v) \
+  do { \
+    (p)[0] = U8V((v)      ); \
+    (p)[1] = U8V((v) >>  8); \
+    (p)[2] = U8V((v) >> 16); \
+    (p)[3] = U8V((v) >> 24); \
+  } while (0)
+
+#define ROTATE(v,c) (ROTL32(v,c))
+#define XOR(v,w) ((v) ^ (w))
+#define PLUS(v,w) (U32V((v) + (w)))
+#define PLUSONE(v) (PLUS((v),1))
+
+#define QUARTERROUND(a,b,c,d) \
+  a = PLUS(a,b); d = ROTATE(XOR(d,a),16); \
+  c = PLUS(c,d); b = ROTATE(XOR(b,c),12); \
+  a = PLUS(a,b); d = ROTATE(XOR(d,a), 8); \
+  c = PLUS(c,d); b = ROTATE(XOR(b,c), 7);
+
+static const char sigma[16] = "expand 32-byte k";
+static const char tau[16] = "expand 16-byte k";
+
+void
+chacha_keysetup(chacha_ctx *x, const u8 *k, u32 kbits)
+{
+  const char *constants;
+
+  x->input[4] = U8TO32_LITTLE(k + 0);
+  x->input[5] = U8TO32_LITTLE(k + 4);
+  x->input[6] = U8TO32_LITTLE(k + 8);
+  x->input[7] = U8TO32_LITTLE(k + 12);
+  if (kbits == 256) { /* recommended */
+    k += 16;
+    constants = sigma;
+  } else { /* kbits == 128 */
+    constants = tau;
+  }
+  x->input[8] = U8TO32_LITTLE(k + 0);
+  x->input[9] = U8TO32_LITTLE(k + 4);
+  x->input[10] = U8TO32_LITTLE(k + 8);
+  x->input[11] = U8TO32_LITTLE(k + 12);
+  x->input[0] = U8TO32_LITTLE(constants + 0);
+  x->input[1] = U8TO32_LITTLE(constants + 4);
+  x->input[2] = U8TO32_LITTLE(constants + 8);
+  x->input[3] = U8TO32_LITTLE(constants + 12);
+}
+
+void
+chacha_ivsetup(chacha_ctx *x, const u8 *iv, const u8 *counter)
+{
+  x->input[12] = counter == NULL ? 0 : U8TO32_LITTLE(counter + 0);
+  x->input[13] = counter == NULL ? 0 : U8TO32_LITTLE(counter + 4);
+  x->input[14] = U8TO32_LITTLE(iv + 0);
+  x->input[15] = U8TO32_LITTLE(iv + 4);
+}
+
+void
+chacha_encrypt_bytes(chacha_ctx *x, const u8 *m, u8 *c, u32 bytes)
+{
+  u32 x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15;
+  u32 j0, j1, j2, j3, j4, j5, j6, j7, j8, j9, j10, j11, j12, j13, j14, j15;
+  u8 *ctarget = NULL;
+  u8 tmp[64];
+  u_int i;
+
+  if (!bytes) return;
+
+  j0 = x->input[0];
+  j1 = x->input[1];
+  j2 = x->input[2];
+  j3 = x->input[3];
+  j4 = x->input[4];
+  j5 = x->input[5];
+  j6 = x->input[6];
+  j7 = x->input[7];
+  j8 = x->input[8];
+  j9 = x->input[9];
+  j10 = x->input[10];
+  j11 = x->input[11];
+  j12 = x->input[12];
+  j13 = x->input[13];
+  j14 = x->input[14];
+  j15 = x->input[15];
+
+  for (;;) {
+    if (bytes < 64) {
+      for (i = 0;i < bytes;++i) tmp[i] = m[i];
+      m = tmp;
+      ctarget = c;
+      c = tmp;
+    }
+    x0 = j0;
+    x1 = j1;
+    x2 = j2;
+    x3 = j3;
+    x4 = j4;
+    x5 = j5;
+    x6 = j6;
+    x7 = j7;
+    x8 = j8;
+    x9 = j9;
+    x10 = j10;
+    x11 = j11;
+    x12 = j12;
+    x13 = j13;
+    x14 = j14;
+    x15 = j15;
+    for (i = 20;i > 0;i -= 2) {
+      QUARTERROUND( x0, x4, x8,x12)
+      QUARTERROUND( x1, x5, x9,x13)
+      QUARTERROUND( x2, x6,x10,x14)
+      QUARTERROUND( x3, x7,x11,x15)
+      QUARTERROUND( x0, x5,x10,x15)
+      QUARTERROUND( x1, x6,x11,x12)
+      QUARTERROUND( x2, x7, x8,x13)
+      QUARTERROUND( x3, x4, x9,x14)
+    }
+    x0 = PLUS(x0,j0);
+    x1 = PLUS(x1,j1);
+    x2 = PLUS(x2,j2);
+    x3 = PLUS(x3,j3);
+    x4 = PLUS(x4,j4);
+    x5 = PLUS(x5,j5);
+    x6 = PLUS(x6,j6);
+    x7 = PLUS(x7,j7);
+    x8 = PLUS(x8,j8);
+    x9 = PLUS(x9,j9);
+    x10 = PLUS(x10,j10);
+    x11 = PLUS(x11,j11);
+    x12 = PLUS(x12,j12);
+    x13 = PLUS(x13,j13);
+    x14 = PLUS(x14,j14);
+    x15 = PLUS(x15,j15);
+
+    x0 = XOR(x0,U8TO32_LITTLE(m + 0));
+    x1 = XOR(x1,U8TO32_LITTLE(m + 4));
+    x2 = XOR(x2,U8TO32_LITTLE(m + 8));
+    x3 = XOR(x3,U8TO32_LITTLE(m + 12));
+    x4 = XOR(x4,U8TO32_LITTLE(m + 16));
+    x5 = XOR(x5,U8TO32_LITTLE(m + 20));
+    x6 = XOR(x6,U8TO32_LITTLE(m + 24));
+    x7 = XOR(x7,U8TO32_LITTLE(m + 28));
+    x8 = XOR(x8,U8TO32_LITTLE(m + 32));
+    x9 = XOR(x9,U8TO32_LITTLE(m + 36));
+    x10 = XOR(x10,U8TO32_LITTLE(m + 40));
+    x11 = XOR(x11,U8TO32_LITTLE(m + 44));
+    x12 = XOR(x12,U8TO32_LITTLE(m + 48));
+    x13 = XOR(x13,U8TO32_LITTLE(m + 52));
+    x14 = XOR(x14,U8TO32_LITTLE(m + 56));
+    x15 = XOR(x15,U8TO32_LITTLE(m + 60));
+
+    j12 = PLUSONE(j12);
+    if (!j12) {
+      j13 = PLUSONE(j13);
+      /* stopping at 2^70 bytes per nonce is user's responsibility */
+    }
+
+    U32TO8_LITTLE(c + 0,x0);
+    U32TO8_LITTLE(c + 4,x1);
+    U32TO8_LITTLE(c + 8,x2);
+    U32TO8_LITTLE(c + 12,x3);
+    U32TO8_LITTLE(c + 16,x4);
+    U32TO8_LITTLE(c + 20,x5);
+    U32TO8_LITTLE(c + 24,x6);
+    U32TO8_LITTLE(c + 28,x7);
+    U32TO8_LITTLE(c + 32,x8);
+    U32TO8_LITTLE(c + 36,x9);
+    U32TO8_LITTLE(c + 40,x10);
+    U32TO8_LITTLE(c + 44,x11);
+    U32TO8_LITTLE(c + 48,x12);
+    U32TO8_LITTLE(c + 52,x13);
+    U32TO8_LITTLE(c + 56,x14);
+    U32TO8_LITTLE(c + 60,x15);
+
+    if (bytes <= 64) {
+      if (bytes < 64) {
+        for (i = 0;i < bytes;++i) ctarget[i] = c[i];
+      }
+      x->input[12] = j12;
+      x->input[13] = j13;
+      return;
+    }
+    bytes -= 64;
+    c += 64;
+    m += 64;
+  }
+}
+
+#endif /* LIBRESSL_VERSION_NUMBER */

Modified: trunk/ttssh2/ttxssh/ed25519_crypto_api.h
===================================================================
--- trunk/ttssh2/ttxssh/ed25519_crypto_api.h	2022-09-11 05:24:19 UTC (rev 10260)
+++ trunk/ttssh2/ttxssh/ed25519_crypto_api.h	2022-09-11 05:26:32 UTC (rev 10261)
@@ -31,8 +31,14 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include "arc4random.h"
 
+#ifndef LIBRESSL_VERSION_NUMBER
+  #include "arc4random.h"
+#else
+  // include LibreSSL header file
+  #include <compat/stdlib.h>
+#endif
+
 typedef unsigned char u_int8_t;
 typedef unsigned short int u_int16_t;
 typedef unsigned int u_int32_t;

Modified: trunk/ttssh2/ttxssh/ttxssh.c
===================================================================
--- trunk/ttssh2/ttxssh/ttxssh.c	2022-09-11 05:24:19 UTC (rev 10260)
+++ trunk/ttssh2/ttxssh/ttxssh.c	2022-09-11 05:26:32 UTC (rev 10261)
@@ -40,7 +40,6 @@
 #include "ttcommon.h"
 #include "ttlib.h"
 #include "keyfiles.h"
-#include "arc4random.h"
 #include "auth.h"
 #include "helpid.h"
 
@@ -71,6 +70,13 @@
 #include <openssl/rc4.h>
 #include <openssl/md5.h>
 
+#ifndef LIBRESSL_VERSION_NUMBER
+  #include "arc4random.h"
+#else
+  // include LibreSSL header file
+  #include <compat/stdlib.h>
+#endif
+
 // include ZLib header file
 #include <zlib.h>
 


Tera Term

[ttssh2-commit] [10261] OpenSSL のときだけ arc4random.c/h と chacha.c/h が使われるようにした