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Diffstat (limited to 'openssl/crypto/bn/rsaz_exp.c')
| -rwxr-xr-x | openssl/crypto/bn/rsaz_exp.c | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/openssl/crypto/bn/rsaz_exp.c b/openssl/crypto/bn/rsaz_exp.c new file mode 100755 index 000000000..a486b154c --- /dev/null +++ b/openssl/crypto/bn/rsaz_exp.c @@ -0,0 +1,336 @@ +/***************************************************************************** +* * +* Copyright (c) 2012, Intel Corporation * +* * +* All rights reserved. * +* * +* Redistribution and use in source and binary forms, with or without * +* modification, are permitted provided that the following conditions are * +* met: * +* * +* * Redistributions of source code must retain the above copyright * +* notice, this list of conditions and the following disclaimer. * +* * +* * Redistributions in binary form must reproduce the above copyright * +* notice, this list of conditions and the following disclaimer in the * +* documentation and/or other materials provided with the * +* distribution. * +* * +* * Neither the name of the Intel Corporation nor the names of its * +* contributors may be used to endorse or promote products derived from * +* this software without specific prior written permission. * +* * +* * +* THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION ""AS IS"" AND ANY * +* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * +* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * +* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTEL CORPORATION OR * +* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * +* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * +* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * +* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * +* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * +* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * +* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * +* * +****************************************************************************** +* Developers and authors: * +* Shay Gueron (1, 2), and Vlad Krasnov (1) * +* (1) Intel Corporation, Israel Development Center, Haifa, Israel * +* (2) University of Haifa, Israel * +*****************************************************************************/ + +#include "rsaz_exp.h" + +/* + * See crypto/bn/asm/rsaz-avx2.pl for further details. + */ +void rsaz_1024_norm2red_avx2(void *red, const void *norm); +void rsaz_1024_mul_avx2(void *ret, const void *a, const void *b, + const void *n, BN_ULONG k); +void rsaz_1024_sqr_avx2(void *ret, const void *a, const void *n, BN_ULONG k, + int cnt); +void rsaz_1024_scatter5_avx2(void *tbl, const void *val, int i); +void rsaz_1024_gather5_avx2(void *val, const void *tbl, int i); +void rsaz_1024_red2norm_avx2(void *norm, const void *red); + +#if defined(__GNUC__) +# define ALIGN64 __attribute__((aligned(64))) +#elif defined(_MSC_VER) +# define ALIGN64 __declspec(align(64)) +#elif defined(__SUNPRO_C) +# define ALIGN64 +# pragma align 64(one,two80) +#else +/* not fatal, might hurt performance a little */ +# define ALIGN64 +#endif + +ALIGN64 static const BN_ULONG one[40] = { + 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +ALIGN64 static const BN_ULONG two80[40] = { + 0, 0, 1 << 22, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +void RSAZ_1024_mod_exp_avx2(BN_ULONG result_norm[16], + const BN_ULONG base_norm[16], + const BN_ULONG exponent[16], + const BN_ULONG m_norm[16], const BN_ULONG RR[16], + BN_ULONG k0) +{ + unsigned char storage[320 * 3 + 32 * 9 * 16 + 64]; /* 5.5KB */ + unsigned char *p_str = storage + (64 - ((size_t)storage % 64)); + unsigned char *a_inv, *m, *result; + unsigned char *table_s = p_str + 320 * 3; + unsigned char *R2 = table_s; /* borrow */ + int index; + int wvalue; + + if ((((size_t)p_str & 4095) + 320) >> 12) { + result = p_str; + a_inv = p_str + 320; + m = p_str + 320 * 2; /* should not cross page */ + } else { + m = p_str; /* should not cross page */ + result = p_str + 320; + a_inv = p_str + 320 * 2; + } + + rsaz_1024_norm2red_avx2(m, m_norm); + rsaz_1024_norm2red_avx2(a_inv, base_norm); + rsaz_1024_norm2red_avx2(R2, RR); + + rsaz_1024_mul_avx2(R2, R2, R2, m, k0); + rsaz_1024_mul_avx2(R2, R2, two80, m, k0); + + /* table[0] = 1 */ + rsaz_1024_mul_avx2(result, R2, one, m, k0); + /* table[1] = a_inv^1 */ + rsaz_1024_mul_avx2(a_inv, a_inv, R2, m, k0); + + rsaz_1024_scatter5_avx2(table_s, result, 0); + rsaz_1024_scatter5_avx2(table_s, a_inv, 1); + + /* table[2] = a_inv^2 */ + rsaz_1024_sqr_avx2(result, a_inv, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 2); +#if 0 + /* this is almost 2x smaller and less than 1% slower */ + for (index = 3; index < 32; index++) { + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, index); + } +#else + /* table[4] = a_inv^4 */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 4); + /* table[8] = a_inv^8 */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 8); + /* table[16] = a_inv^16 */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 16); + /* table[17] = a_inv^17 */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 17); + + /* table[3] */ + rsaz_1024_gather5_avx2(result, table_s, 2); + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 3); + /* table[6] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 6); + /* table[12] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 12); + /* table[24] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 24); + /* table[25] */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 25); + + /* table[5] */ + rsaz_1024_gather5_avx2(result, table_s, 4); + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 5); + /* table[10] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 10); + /* table[20] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 20); + /* table[21] */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 21); + + /* table[7] */ + rsaz_1024_gather5_avx2(result, table_s, 6); + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 7); + /* table[14] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 14); + /* table[28] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 28); + /* table[29] */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 29); + + /* table[9] */ + rsaz_1024_gather5_avx2(result, table_s, 8); + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 9); + /* table[18] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 18); + /* table[19] */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 19); + + /* table[11] */ + rsaz_1024_gather5_avx2(result, table_s, 10); + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 11); + /* table[22] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 22); + /* table[23] */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 23); + + /* table[13] */ + rsaz_1024_gather5_avx2(result, table_s, 12); + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 13); + /* table[26] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 26); + /* table[27] */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 27); + + /* table[15] */ + rsaz_1024_gather5_avx2(result, table_s, 14); + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 15); + /* table[30] */ + rsaz_1024_sqr_avx2(result, result, m, k0, 1); + rsaz_1024_scatter5_avx2(table_s, result, 30); + /* table[31] */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + rsaz_1024_scatter5_avx2(table_s, result, 31); +#endif + + /* load first window */ + p_str = (unsigned char *)exponent; + wvalue = p_str[127] >> 3; + rsaz_1024_gather5_avx2(result, table_s, wvalue); + + index = 1014; + + while (index > -1) { /* loop for the remaining 127 windows */ + + rsaz_1024_sqr_avx2(result, result, m, k0, 5); + + wvalue = *((unsigned short *)&p_str[index / 8]); + wvalue = (wvalue >> (index % 8)) & 31; + index -= 5; + + rsaz_1024_gather5_avx2(a_inv, table_s, wvalue); /* borrow a_inv */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + } + + /* square four times */ + rsaz_1024_sqr_avx2(result, result, m, k0, 4); + + wvalue = p_str[0] & 15; + + rsaz_1024_gather5_avx2(a_inv, table_s, wvalue); /* borrow a_inv */ + rsaz_1024_mul_avx2(result, result, a_inv, m, k0); + + /* from Montgomery */ + rsaz_1024_mul_avx2(result, result, one, m, k0); + + rsaz_1024_red2norm_avx2(result_norm, result); + + OPENSSL_cleanse(storage, sizeof(storage)); +} + +/* + * See crypto/bn/rsaz-x86_64.pl for further details. + */ +void rsaz_512_mul(void *ret, const void *a, const void *b, const void *n, + BN_ULONG k); +void rsaz_512_mul_scatter4(void *ret, const void *a, const void *n, + BN_ULONG k, const void *tbl, unsigned int power); +void rsaz_512_mul_gather4(void *ret, const void *a, const void *tbl, + const void *n, BN_ULONG k, unsigned int power); +void rsaz_512_mul_by_one(void *ret, const void *a, const void *n, BN_ULONG k); +void rsaz_512_sqr(void *ret, const void *a, const void *n, BN_ULONG k, + int cnt); +void rsaz_512_scatter4(void *tbl, const BN_ULONG *val, int power); +void rsaz_512_gather4(BN_ULONG *val, const void *tbl, int power); + +void RSAZ_512_mod_exp(BN_ULONG result[8], + const BN_ULONG base[8], const BN_ULONG exponent[8], + const BN_ULONG m[8], BN_ULONG k0, const BN_ULONG RR[8]) +{ + unsigned char storage[16 * 8 * 8 + 64 * 2 + 64]; /* 1.2KB */ + unsigned char *table = storage + (64 - ((size_t)storage % 64)); + BN_ULONG *a_inv = (BN_ULONG *)(table + 16 * 8 * 8); + BN_ULONG *temp = (BN_ULONG *)(table + 16 * 8 * 8 + 8 * 8); + unsigned char *p_str = (unsigned char *)exponent; + int index; + unsigned int wvalue; + + /* table[0] = 1_inv */ + temp[0] = 0 - m[0]; + temp[1] = ~m[1]; + temp[2] = ~m[2]; + temp[3] = ~m[3]; + temp[4] = ~m[4]; + temp[5] = ~m[5]; + temp[6] = ~m[6]; + temp[7] = ~m[7]; + rsaz_512_scatter4(table, temp, 0); + + /* table [1] = a_inv^1 */ + rsaz_512_mul(a_inv, base, RR, m, k0); + rsaz_512_scatter4(table, a_inv, 1); + + /* table [2] = a_inv^2 */ + rsaz_512_sqr(temp, a_inv, m, k0, 1); + rsaz_512_scatter4(table, temp, 2); + + for (index = 3; index < 16; index++) + rsaz_512_mul_scatter4(temp, a_inv, m, k0, table, index); + + /* load first window */ + wvalue = p_str[63]; + + rsaz_512_gather4(temp, table, wvalue >> 4); + rsaz_512_sqr(temp, temp, m, k0, 4); + rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue & 0xf); + + for (index = 62; index >= 0; index--) { + wvalue = p_str[index]; + + rsaz_512_sqr(temp, temp, m, k0, 4); + rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue >> 4); + + rsaz_512_sqr(temp, temp, m, k0, 4); + rsaz_512_mul_gather4(temp, temp, table, m, k0, wvalue & 0x0f); + } + + /* from Montgomery */ + rsaz_512_mul_by_one(result, temp, m, k0); + + OPENSSL_cleanse(storage, sizeof(storage)); +} |