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libgcrypt: Import libgcrypt 1.11
We currently use an old version of libgcrypt which results in us having fewer ciphers and missing on many other improvements. Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
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Vladimir Serbinenko authored and Daniel Kiper committed
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/* Rijndael (AES) for GnuPG - PowerPC Vector Crypto AES implementation
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* Copyright (C) 2019 Shawn Landden <shawn@git.icu>
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* Copyright (C) 2019-2020, 2022 Jussi Kivilinna <jussi.kivilinna@iki.fi>
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*
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* This file is part of Libgcrypt.
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*
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* Libgcrypt is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* Libgcrypt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*
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* Alternatively, this code may be used in OpenSSL from The OpenSSL Project,
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* and Cryptogams by Andy Polyakov, and if made part of a release of either
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* or both projects, is thereafter dual-licensed under the license said project
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* is released under.
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*/
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#include <config.h>
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#include "rijndael-internal.h"
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#include "cipher-internal.h"
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#include "bufhelp.h"
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#ifdef USE_PPC_CRYPTO
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#include "rijndael-ppc-common.h"
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#ifdef HAVE_GCC_ATTRIBUTE_OPTIMIZE
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# define FUNC_ATTR_OPT __attribute__((optimize("-O2")))
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#else
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# define FUNC_ATTR_OPT
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#endif
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#if defined(__clang__) && defined(HAVE_CLANG_ATTRIBUTE_PPC_TARGET)
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# define PPC_OPT_ATTR __attribute__((target("arch=pwr8"))) FUNC_ATTR_OPT
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#elif defined(HAVE_GCC_ATTRIBUTE_PPC_TARGET)
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# define PPC_OPT_ATTR __attribute__((target("cpu=power8"))) FUNC_ATTR_OPT
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#else
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# define PPC_OPT_ATTR FUNC_ATTR_OPT
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#endif
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#ifndef WORDS_BIGENDIAN
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static const block vec_bswap32_const_neg =
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{ ~3, ~2, ~1, ~0, ~7, ~6, ~5, ~4, ~11, ~10, ~9, ~8, ~15, ~14, ~13, ~12 };
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#endif
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static ASM_FUNC_ATTR_INLINE block
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asm_load_be_const(void)
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{
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#ifndef WORDS_BIGENDIAN
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return ALIGNED_LOAD (&vec_bswap32_const_neg, 0);
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#else
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static const block vec_dummy = { 0 };
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return vec_dummy;
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#endif
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}
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static ASM_FUNC_ATTR_INLINE block
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asm_be_swap(block vec, block be_bswap_const)
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{
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(void)be_bswap_const;
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#ifndef WORDS_BIGENDIAN
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return asm_vperm1 (vec, be_bswap_const);
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#else
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return vec;
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#endif
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}
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static ASM_FUNC_ATTR_INLINE block
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asm_load_be_noswap(unsigned long offset, const void *ptr)
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{
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block vec;
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#if __GNUC__ >= 4
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if (__builtin_constant_p (offset) && offset == 0)
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__asm__ volatile ("lxvw4x %x0,0,%1\n\t"
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: "=wa" (vec)
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: "r" ((uintptr_t)ptr)
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: "memory");
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else
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#endif
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__asm__ volatile ("lxvw4x %x0,%1,%2\n\t"
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: "=wa" (vec)
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: "r" (offset), "r" ((uintptr_t)ptr)
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: "memory", "r0");
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/* NOTE: vec needs to be be-swapped using 'asm_be_swap' by caller */
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return vec;
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}
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static ASM_FUNC_ATTR_INLINE void
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asm_store_be_noswap(block vec, unsigned long offset, void *ptr)
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{
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/* NOTE: vec be-swapped using 'asm_be_swap' by caller */
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#if __GNUC__ >= 4
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if (__builtin_constant_p (offset) && offset == 0)
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__asm__ volatile ("stxvw4x %x0,0,%1\n\t"
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:
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: "wa" (vec), "r" ((uintptr_t)ptr)
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: "memory");
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else
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#endif
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__asm__ volatile ("stxvw4x %x0,%1,%2\n\t"
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:
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: "wa" (vec), "r" (offset), "r" ((uintptr_t)ptr)
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: "memory", "r0");
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}
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static ASM_FUNC_ATTR_INLINE unsigned int
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keysched_idx(unsigned int in)
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{
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#ifdef WORDS_BIGENDIAN
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return in;
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#else
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return (in & ~3U) | (3U - (in & 3U));
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#endif
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}
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static ASM_FUNC_ATTR_INLINE vec_u32
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bcast_u32_to_vec(u32 x)
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{
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vec_u32 v = { x, x, x, x };
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return v;
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}
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static ASM_FUNC_ATTR_INLINE u32
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u32_from_vec(vec_u32 x)
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{
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#ifdef WORDS_BIGENDIAN
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return x[1];
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#else
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return x[2];
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#endif
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}
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void PPC_OPT_ATTR
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_gcry_aes_ppc8_setkey (RIJNDAEL_context *ctx, const byte *key)
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{
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static const vec_u32 rotate24 = { 24, 24, 24, 24 };
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static const vec_u32 rcon_const = { 0x1b, 0x1b, 0x1b, 0x1b };
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vec_u32 tk_vu32[MAXKC];
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unsigned int rounds = ctx->rounds;
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unsigned int KC = rounds - 6;
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u32 *W_u32 = ctx->keyschenc32b;
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unsigned int i, j;
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vec_u32 tk_prev;
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vec_u32 rcon = { 1, 1, 1, 1 };
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for (i = 0; i < KC; i += 2)
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{
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unsigned int idx0 = keysched_idx(i + 0);
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unsigned int idx1 = keysched_idx(i + 1);
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tk_vu32[i + 0] = bcast_u32_to_vec(buf_get_le32(key + i * 4 + 0));
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tk_vu32[i + 1] = bcast_u32_to_vec(buf_get_le32(key + i * 4 + 4));
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W_u32[idx0] = u32_from_vec(vec_revb(tk_vu32[i + 0]));
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W_u32[idx1] = u32_from_vec(vec_revb(tk_vu32[i + 1]));
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}
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for (i = KC, j = KC, tk_prev = tk_vu32[KC - 1];
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i < 4 * (rounds + 1);
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i += 2, j += 2)
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{
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unsigned int idx0 = keysched_idx(i + 0);
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unsigned int idx1 = keysched_idx(i + 1);
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vec_u32 temp0 = tk_prev;
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vec_u32 temp1;
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if (j == KC)
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{
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j = 0;
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temp0 = (vec_u32)(asm_sbox_be((block)vec_rl(temp0, rotate24))) ^ rcon;
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rcon = (vec_u32)(((block)rcon << 1)
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^ (-((block)rcon >> 7) & (block)rcon_const));
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}
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else if (KC == 8 && j == 4)
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{
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temp0 = (vec_u32)asm_sbox_be((block)temp0);
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}
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temp1 = tk_vu32[j + 0];
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tk_vu32[j + 0] = temp0 ^ temp1;
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tk_vu32[j + 1] ^= temp0 ^ temp1;
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tk_prev = tk_vu32[j + 1];
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W_u32[idx0] = u32_from_vec(vec_revb(tk_vu32[j + 0]));
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W_u32[idx1] = u32_from_vec(vec_revb(tk_vu32[j + 1]));
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}
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wipememory(tk_vu32, sizeof(tk_vu32));
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}
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void PPC_OPT_ATTR
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_gcry_aes_ppc8_prepare_decryption (RIJNDAEL_context *ctx)
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{
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internal_aes_ppc_prepare_decryption (ctx);
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}
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#define GCRY_AES_PPC8 1
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#define ENCRYPT_BLOCK_FUNC _gcry_aes_ppc8_encrypt
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#define DECRYPT_BLOCK_FUNC _gcry_aes_ppc8_decrypt
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#define ECB_CRYPT_FUNC _gcry_aes_ppc8_ecb_crypt
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#define CFB_ENC_FUNC _gcry_aes_ppc8_cfb_enc
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#define CFB_DEC_FUNC _gcry_aes_ppc8_cfb_dec
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#define CBC_ENC_FUNC _gcry_aes_ppc8_cbc_enc
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#define CBC_DEC_FUNC _gcry_aes_ppc8_cbc_dec
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#define CTR_ENC_FUNC _gcry_aes_ppc8_ctr_enc
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#define OCB_CRYPT_FUNC _gcry_aes_ppc8_ocb_crypt
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#define OCB_AUTH_FUNC _gcry_aes_ppc8_ocb_auth
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#define XTS_CRYPT_FUNC _gcry_aes_ppc8_xts_crypt
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#define CTR32LE_ENC_FUNC _gcry_aes_ppc8_ctr32le_enc
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#include <rijndael-ppc-functions.h>
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#endif /* USE_PPC_CRYPTO */
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