Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 259 insertions, 0 deletions

diff --git a/comm/third_party/libgcrypt/cipher/rijndael-ppc.c b/comm/third_party/libgcrypt/cipher/rijndael-ppc.c
new file mode 100644
index 0000000000..f5c3236111
--- /dev/null
+++ b/comm/third_party/libgcrypt/cipher/rijndael-ppc.c
@@ -0,0 +1,259 @@
+/* Rijndael (AES) for GnuPG - PowerPC Vector Crypto AES implementation
+ * Copyright (C) 2019 Shawn Landden <shawn@git.icu>
+ * Copyright (C) 2019-2020 Jussi Kivilinna <jussi.kivilinna@iki.fi>
+ *
+ * This file is part of Libgcrypt.
+ *
+ * Libgcrypt is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Libgcrypt is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Alternatively, this code may be used in OpenSSL from The OpenSSL Project,
+ * and Cryptogams by Andy Polyakov, and if made part of a release of either
+ * or both projects, is thereafter dual-licensed under the license said project
+ * is released under.
+ */
+
+#include <config.h>
+
+#include "rijndael-internal.h"
+#include "cipher-internal.h"
+#include "bufhelp.h"
+
+#ifdef USE_PPC_CRYPTO
+
+#include "rijndael-ppc-common.h"
+
+
+#ifdef WORDS_BIGENDIAN
+static const block vec_bswap32_const =
+  { 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12 };
+#else
+static const block vec_bswap32_const_neg =
+  { ~3, ~2, ~1, ~0, ~7, ~6, ~5, ~4, ~11, ~10, ~9, ~8, ~15, ~14, ~13, ~12 };
+#endif
+
+
+static ASM_FUNC_ATTR_INLINE block
+asm_load_be_const(void)
+{
+#ifndef WORDS_BIGENDIAN
+  return ALIGNED_LOAD (&vec_bswap32_const_neg, 0);
+#else
+  static const block vec_dummy = { 0 };
+  return vec_dummy;
+#endif
+}
+
+static ASM_FUNC_ATTR_INLINE block
+asm_be_swap(block vec, block be_bswap_const)
+{
+  (void)be_bswap_const;
+#ifndef WORDS_BIGENDIAN
+  return asm_vperm1 (vec, be_bswap_const);
+#else
+  return vec;
+#endif
+}
+
+static ASM_FUNC_ATTR_INLINE block
+asm_load_be_noswap(unsigned long offset, const void *ptr)
+{
+  block vec;
+#if __GNUC__ >= 4
+  if (__builtin_constant_p (offset) && offset == 0)
+    __asm__ volatile ("lxvw4x %x0,0,%1\n\t"
+		      : "=wa" (vec)
+		      : "r" ((uintptr_t)ptr)
+		      : "memory");
+  else
+#endif
+    __asm__ volatile ("lxvw4x %x0,%1,%2\n\t"
+		      : "=wa" (vec)
+		      : "r" (offset), "r" ((uintptr_t)ptr)
+		      : "memory", "r0");
+  /* NOTE: vec needs to be be-swapped using 'asm_be_swap' by caller */
+  return vec;
+}
+
+static ASM_FUNC_ATTR_INLINE void
+asm_store_be_noswap(block vec, unsigned long offset, void *ptr)
+{
+  /* NOTE: vec be-swapped using 'asm_be_swap' by caller */
+#if __GNUC__ >= 4
+  if (__builtin_constant_p (offset) && offset == 0)
+    __asm__ volatile ("stxvw4x %x0,0,%1\n\t"
+		      :
+		      : "wa" (vec), "r" ((uintptr_t)ptr)
+		      : "memory");
+  else
+#endif
+    __asm__ volatile ("stxvw4x %x0,%1,%2\n\t"
+		      :
+		      : "wa" (vec), "r" (offset), "r" ((uintptr_t)ptr)
+		      : "memory", "r0");
+}
+
+
+static ASM_FUNC_ATTR_INLINE u32
+_gcry_aes_sbox4_ppc8(u32 fourbytes)
+{
+  union
+    {
+      PROPERLY_ALIGNED_TYPE dummy;
+      block data_vec;
+      u32 data32[4];
+    } u;
+
+  u.data32[0] = fourbytes;
+  u.data_vec = vec_sbox_be(u.data_vec);
+  return u.data32[0];
+}
+
+void
+_gcry_aes_ppc8_setkey (RIJNDAEL_context *ctx, const byte *key)
+{
+  const block bige_const = asm_load_be_const();
+  union
+    {
+      PROPERLY_ALIGNED_TYPE dummy;
+      byte data[MAXKC][4];
+      u32 data32[MAXKC];
+    } tkk[2];
+  unsigned int rounds = ctx->rounds;
+  int KC = rounds - 6;
+  unsigned int keylen = KC * 4;
+  u128_t *ekey = (u128_t *)(void *)ctx->keyschenc;
+  unsigned int i, r, t;
+  byte rcon = 1;
+  int j;
+#define k      tkk[0].data
+#define k_u32  tkk[0].data32
+#define tk     tkk[1].data
+#define tk_u32 tkk[1].data32
+#define W      (ctx->keyschenc)
+#define W_u32  (ctx->keyschenc32)
+
+  for (i = 0; i < keylen; i++)
+    {
+      k[i >> 2][i & 3] = key[i];
+    }
+
+  for (j = KC-1; j >= 0; j--)
+    {
+      tk_u32[j] = k_u32[j];
+    }
+  r = 0;
+  t = 0;
+  /* Copy values into round key array.  */
+  for (j = 0; (j < KC) && (r < rounds + 1); )
+    {
+      for (; (j < KC) && (t < 4); j++, t++)
+        {
+          W_u32[r][t] = le_bswap32(tk_u32[j]);
+        }
+      if (t == 4)
+        {
+          r++;
+          t = 0;
+        }
+    }
+  while (r < rounds + 1)
+    {
+      tk_u32[0] ^=
+	le_bswap32(
+	  _gcry_aes_sbox4_ppc8(rol(le_bswap32(tk_u32[KC - 1]), 24)) ^ rcon);
+
+      if (KC != 8)
+        {
+          for (j = 1; j < KC; j++)
+            {
+              tk_u32[j] ^= tk_u32[j-1];
+            }
+        }
+      else
+        {
+          for (j = 1; j < KC/2; j++)
+            {
+              tk_u32[j] ^= tk_u32[j-1];
+            }
+
+          tk_u32[KC/2] ^=
+	    le_bswap32(_gcry_aes_sbox4_ppc8(le_bswap32(tk_u32[KC/2 - 1])));
+
+          for (j = KC/2 + 1; j < KC; j++)
+            {
+              tk_u32[j] ^= tk_u32[j-1];
+            }
+        }
+
+      /* Copy values into round key array.  */
+      for (j = 0; (j < KC) && (r < rounds + 1); )
+        {
+          for (; (j < KC) && (t < 4); j++, t++)
+            {
+              W_u32[r][t] = le_bswap32(tk_u32[j]);
+            }
+          if (t == 4)
+            {
+              r++;
+              t = 0;
+            }
+        }
+
+      rcon = (rcon << 1) ^ (-(rcon >> 7) & 0x1b);
+    }
+
+  /* Store in big-endian order. */
+  for (r = 0; r <= rounds; r++)
+    {
+#ifndef WORDS_BIGENDIAN
+      VEC_STORE_BE(ekey, r, ALIGNED_LOAD (ekey, r), bige_const);
+#else
+      block rvec = ALIGNED_LOAD (ekey, r);
+      ALIGNED_STORE (ekey, r,
+                     vec_perm(rvec, rvec, vec_bswap32_const));
+      (void)bige_const;
+#endif
+    }
+
+#undef W
+#undef tk
+#undef k
+#undef W_u32
+#undef tk_u32
+#undef k_u32
+  wipememory(&tkk, sizeof(tkk));
+}
+
+void
+_gcry_aes_ppc8_prepare_decryption (RIJNDAEL_context *ctx)
+{
+  internal_aes_ppc_prepare_decryption (ctx);
+}
+
+
+#define GCRY_AES_PPC8 1
+#define ENCRYPT_BLOCK_FUNC	_gcry_aes_ppc8_encrypt
+#define DECRYPT_BLOCK_FUNC	_gcry_aes_ppc8_decrypt
+#define CFB_ENC_FUNC		_gcry_aes_ppc8_cfb_enc
+#define CFB_DEC_FUNC		_gcry_aes_ppc8_cfb_dec
+#define CBC_ENC_FUNC		_gcry_aes_ppc8_cbc_enc
+#define CBC_DEC_FUNC		_gcry_aes_ppc8_cbc_dec
+#define CTR_ENC_FUNC		_gcry_aes_ppc8_ctr_enc
+#define OCB_CRYPT_FUNC		_gcry_aes_ppc8_ocb_crypt
+#define OCB_AUTH_FUNC		_gcry_aes_ppc8_ocb_auth
+#define XTS_CRYPT_FUNC		_gcry_aes_ppc8_xts_crypt
+
+#include <rijndael-ppc-functions.h>
+
+#endif /* USE_PPC_CRYPTO */