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211 lines
5.9 KiB
C
211 lines
5.9 KiB
C
/* poly1305.h
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*
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* Copyright (C) 2006-2025 wolfSSL Inc.
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*
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* This file is part of wolfSSL.
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*
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* wolfSSL is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* wolfSSL 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
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*/
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/*!
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\file wolfssl/wolfcrypt/poly1305.h
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*/
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#ifndef WOLF_CRYPT_POLY1305_H
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#define WOLF_CRYPT_POLY1305_H
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#include <wolfssl/wolfcrypt/types.h>
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#ifdef HAVE_POLY1305
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* auto detect between 32bit / 64bit */
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#if defined(__SIZEOF_INT128__) && defined(__LP64__)
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#define WC_HAS_SIZEOF_INT128_64BIT
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#endif
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#if defined(_MSC_VER) && defined(_M_X64)
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#define WC_HAS_MSVC_64BIT
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#endif
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#if (defined(__GNUC__) && defined(__LP64__) && \
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((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4))))
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#define WC_HAS_GCC_4_4_64BIT
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#endif
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#ifdef WOLFSSL_X86_64_BUILD
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#if defined(USE_INTEL_SPEEDUP) && !defined(NO_POLY1305_ASM)
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#define USE_INTEL_POLY1305_SPEEDUP
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#define HAVE_INTEL_AVX1
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#endif
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#endif
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#if defined(USE_INTEL_POLY1305_SPEEDUP)
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#elif (defined(WC_HAS_SIZEOF_INT128_64BIT) || defined(WC_HAS_MSVC_64BIT) || \
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defined(WC_HAS_GCC_4_4_64BIT)) && !defined(WOLFSSL_W64_WRAPPER_TEST)
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#define POLY130564
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#else
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#define POLY130532
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#endif
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enum {
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POLY1305 = 7,
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POLY1305_BLOCK_SIZE = 16,
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POLY1305_DIGEST_SIZE = 16
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};
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#define WC_POLY1305_PAD_SZ 16
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#define WC_POLY1305_MAC_SZ 16
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/* Poly1305 state */
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typedef struct Poly1305 {
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#ifdef USE_INTEL_POLY1305_SPEEDUP
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word64 r[3];
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word64 h[3];
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word64 pad[2];
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word64 hh[20];
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word32 r1[8];
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word32 r2[8];
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word32 r3[8];
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word32 r4[8];
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word64 hm[16];
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unsigned char buffer[8*POLY1305_BLOCK_SIZE];
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size_t leftover;
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unsigned char finished;
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unsigned char started;
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#elif defined(WOLFSSL_ARMASM) && defined(__aarch64__)
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ALIGN128 word64 r64[2];
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ALIGN128 word32 r[5];
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ALIGN128 word32 r_2[5]; /* r^2 */
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ALIGN128 word32 r_4[5]; /* r^4 */
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ALIGN128 word32 h[5];
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word32 pad[4];
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word64 leftover;
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unsigned char buffer[POLY1305_BLOCK_SIZE];
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unsigned char finished;
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#elif defined(WOLFSSL_ARMASM) && !defined(WOLFSSL_ARMASM_THUMB2) && \
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!defined(WOLFSSL_ARMASM_NO_NEON)
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/* NEON implementation for ARM32 */
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word32 r[4];
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word32 h[6];
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word32 pad[4];
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word32 leftover;
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unsigned char buffer[4*POLY1305_BLOCK_SIZE];
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word32 r_21[10];
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word32 r_43[10];
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#elif defined(WOLFSSL_ARMASM)
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/* ARM32 (non-NEON) and Thumb2 */
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word32 r[4];
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word32 h[5];
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word32 pad[4];
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word32 leftover;
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unsigned char buffer[POLY1305_BLOCK_SIZE];
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#elif defined(WOLFSSL_RISCV_ASM)
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word64 r[2];
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#ifdef WOLFSSL_RISCV_VECTOR
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word64 r2[6];
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#endif
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word64 h[3];
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word64 pad[2];
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size_t leftover;
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unsigned char buffer[POLY1305_BLOCK_SIZE];
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#else
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#if defined(POLY130564)
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word64 r[3];
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word64 h[3];
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word64 pad[2];
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#else
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word32 r[5];
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word32 h[5];
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word32 pad[4];
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#endif
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size_t leftover;
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unsigned char buffer[POLY1305_BLOCK_SIZE];
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unsigned char finished;
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#endif /* WOLFSSL_ARMASM */
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} Poly1305;
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/* does init */
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WOLFSSL_API int wc_Poly1305SetKey(Poly1305* poly1305, const byte* key,
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word32 kySz);
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WOLFSSL_API int wc_Poly1305Update(Poly1305* poly1305, const byte* m, word32 bytes);
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WOLFSSL_API int wc_Poly1305Final(Poly1305* poly1305, byte* tag);
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/* AEAD Functions */
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WOLFSSL_API int wc_Poly1305_Pad(Poly1305* ctx, word32 lenToPad);
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WOLFSSL_API int wc_Poly1305_EncodeSizes(Poly1305* ctx, word32 aadSz,
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word32 dataSz);
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#ifdef WORD64_AVAILABLE
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WOLFSSL_API int wc_Poly1305_EncodeSizes64(Poly1305* ctx, word64 aadSz,
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word64 dataSz);
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#endif
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WOLFSSL_API int wc_Poly1305_MAC(Poly1305* ctx, const byte* additional,
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word32 addSz, const byte* input, word32 sz, byte* tag, word32 tagSz);
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#if defined(WOLFSSL_ARMASM)
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#if defined(__aarch64__ )
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#define poly1305_blocks poly1305_blocks_aarch64
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#define poly1305_block poly1305_block_aarch64
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void poly1305_blocks_aarch64(Poly1305* ctx, const unsigned char *m,
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size_t bytes);
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void poly1305_block_aarch64(Poly1305* ctx, const unsigned char *m);
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#else
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#if defined(WOLFSSL_ARMASM_THUMB2)
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#define poly1305_blocks poly1305_blocks_thumb2
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#define poly1305_block poly1305_block_thumb2
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void poly1305_blocks_thumb2(Poly1305* ctx, const unsigned char *m,
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size_t bytes);
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void poly1305_block_thumb2(Poly1305* ctx, const unsigned char *m);
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void poly1305_blocks_thumb2_16(Poly1305* ctx, const unsigned char* m,
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word32 len, int notLast);
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#else
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#define poly1305_blocks poly1305_blocks_arm32
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#define poly1305_block poly1305_block_arm32
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void poly1305_blocks_arm32(Poly1305* ctx, const unsigned char *m, size_t bytes);
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void poly1305_block_arm32(Poly1305* ctx, const unsigned char *m);
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void poly1305_arm32_blocks(Poly1305* ctx, const unsigned char* m, word32 len);
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void poly1305_arm32_blocks_16(Poly1305* ctx, const unsigned char* m, word32 len,
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int notLast);
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#endif
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void poly1305_set_key(Poly1305* ctx, const byte* key);
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void poly1305_final(Poly1305* ctx, byte* mac);
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#endif
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#endif /* WOLFSSL_ARMASM */
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#if defined(WOLFSSL_RISCV_ASM)
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#define poly1305_blocks poly1305_blocks_riscv64
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#define poly1305_block poly1305_block_riscv64
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void poly1305_blocks_riscv64(Poly1305* ctx, const unsigned char *m,
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size_t bytes);
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void poly1305_block_riscv64(Poly1305* ctx, const unsigned char *m);
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#endif
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* HAVE_POLY1305 */
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#endif /* WOLF_CRYPT_POLY1305_H */
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