mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 06:53:33 +00:00
7b26b42769
This makes breaking changes to add underscores to many non-standard
function names provided by the c library. MODE=tiny is now tinier and
we now use smaller locks that are better for tiny apps in this mode.
Some headers have been renamed to be in the same folder as the build
package, so it'll be easier to know which build dependency is needed.
Certain old misguided interfaces have been removed. Intel intrinsics
headers are now listed in libc/isystem (but not in the amalgamation)
to help further improve open source compatibility. Header complexity
has also been reduced. Lastly, more shell scripts are now available.
Compared to 6f7d0cb1c3, some tiny corrections were made in libc/intrin/g_fds.c and libc/zipos/open.c including double semi colons and incorrect indentation for existing vista changes that were manually pulled from this commit previously.
600 lines
20 KiB
C
600 lines
20 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:4;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/log/check.h"
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#include "libc/nexgen32e/x86feature.h"
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#include "libc/mem/gc.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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#include "third_party/mbedtls/bignum_internal.h"
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#include "third_party/mbedtls/ecp.h"
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#include "third_party/mbedtls/ecp_internal.h"
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#include "third_party/mbedtls/error.h"
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#include "third_party/mbedtls/math.h"
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#include "third_party/mbedtls/profile.h"
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#include "third_party/mbedtls/select.h"
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/* clang-format off */
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static bool
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mbedtls_p384_isz( uint64_t p[6] )
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{
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return( !p[0] & !p[1] & !p[2] & !p[3] & !p[4] & !p[5] );
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}
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static bool
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mbedtls_p384_gte( uint64_t p[7] )
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{
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return( (((int64_t)p[6] > 0) |
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(!p[6] &
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((p[5] > 0xffffffffffffffff) |
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((p[5] == 0xffffffffffffffff) &
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((p[4] > 0xffffffffffffffff) |
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((p[4] == 0xffffffffffffffff) &
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((p[3] > 0xffffffffffffffff) |
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((p[3] == 0xffffffffffffffff) &
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((p[2] > 0xfffffffffffffffe) |
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((p[2] == 0xfffffffffffffffe) &
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((p[1] > 0xffffffff00000000) |
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((p[1] == 0xffffffff00000000) &
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((p[0] > 0x00000000ffffffff) |
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(p[0] == 0x00000000ffffffff)))))))))))))) );
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}
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static int
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mbedtls_p384_cmp( const uint64_t a[7],
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const uint64_t b[7] )
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{
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int i, x, y, done = 0;
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// return -1 if a[6] < b[6]
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x = -((int64_t)a[6] < (int64_t)b[6]);
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done = x;
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// return +1 if a[6] > b[6]
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y = (int64_t)a[6] > (int64_t)b[6];
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x = Select(x, y, done);
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done |= -y;
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for (i = 6; i--;) {
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y = -(a[i] < b[i]);
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x = Select(x, y, done);
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done |= y;
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y = a[i] > b[i];
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x = Select(x, y, done);
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done |= -y;
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}
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return x;
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}
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static inline void
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mbedtls_p384_red( uint64_t p[7] )
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{
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#if defined(__x86_64__) && !defined(__STRICT_ANSI__)
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asm("subq\t%1,%0\n\t"
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"sbbq\t%2,8+%0\n\t"
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"sbbq\t%3,16+%0\n\t"
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"sbbq\t%4,24+%0\n\t"
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"sbbq\t%4,32+%0\n\t"
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"sbbq\t%4,40+%0\n\t"
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"sbbq\t$0,48+%0"
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: "+o"(*p)
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: "r"(0x00000000ffffffffl), "r"(0xffffffff00000000),
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"i"(0xfffffffffffffffel), "i"(0xffffffffffffffff)
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: "memory", "cc");
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#else
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uint64_t c;
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SBB( p[0], p[0], 0x00000000ffffffff, 0, c );
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SBB( p[1], p[1], 0xffffffff00000000, c, c );
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SBB( p[2], p[2], 0xfffffffffffffffe, c, c );
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SBB( p[3], p[3], 0xffffffffffffffff, c, c );
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SBB( p[4], p[4], 0xffffffffffffffff, c, c );
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SBB( p[5], p[5], 0xffffffffffffffff, c, c );
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SBB( p[6], p[6], 0, c, c );
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#endif
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}
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static inline void
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mbedtls_p384_gro( uint64_t p[7] )
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{
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#if defined(__x86_64__) && !defined(__STRICT_ANSI__)
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asm("addq\t%1,%0\n\t"
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"adcq\t%2,8+%0\n\t"
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"adcq\t%3,16+%0\n\t"
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"adcq\t%4,24+%0\n\t"
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"adcq\t%4,32+%0\n\t"
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"adcq\t%4,40+%0\n\t"
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"adcq\t$0,48+%0"
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: "+o"(*p)
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: "r"(0x00000000ffffffffl), "r"(0xffffffff00000000),
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"i"(0xfffffffffffffffel), "i"(0xffffffffffffffff)
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: "memory", "cc");
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#else
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uint64_t c;
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ADC( p[0], p[0], 0x00000000ffffffff, 0, c );
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ADC( p[1], p[1], 0xffffffff00000000, c, c );
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ADC( p[2], p[2], 0xfffffffffffffffe, c, c );
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ADC( p[3], p[3], 0xffffffffffffffff, c, c );
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ADC( p[4], p[4], 0xffffffffffffffff, c, c );
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ADC( p[5], p[5], 0xffffffffffffffff, c, c );
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ADC( p[6], p[6], 0, c, c );
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#endif
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}
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static inline void
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mbedtls_p384_rum( uint64_t p[7] )
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{
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while( mbedtls_p384_gte( p ) )
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mbedtls_p384_red( p );
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}
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void mbedtls_p384_mod( uint64_t X[12] )
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{
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secp384r1(X);
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if( (int64_t)X[6] < 0 ){
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do {
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mbedtls_p384_gro(X);
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} while( (int64_t)X[6] < 0 );
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} else {
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mbedtls_p384_rum(X);
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}
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}
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static inline void
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mbedtls_p384_sar( uint64_t p[7] )
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{
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p[0] = p[0] >> 1 | p[1] << 63;
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p[1] = p[1] >> 1 | p[2] << 63;
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p[2] = p[2] >> 1 | p[3] << 63;
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p[3] = p[3] >> 1 | p[4] << 63;
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p[4] = p[4] >> 1 | p[5] << 63;
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p[5] = p[5] >> 1 | p[6] << 63;
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p[6] = (int64_t)p[6] >> 1;
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}
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static inline void
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mbedtls_p384_shl( uint64_t p[7] )
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{
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p[6] = p[5] >> 63;
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p[5] = p[5] << 1 | p[4] >> 63;
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p[4] = p[4] << 1 | p[3] >> 63;
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p[3] = p[3] << 1 | p[2] >> 63;
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p[2] = p[2] << 1 | p[1] >> 63;
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p[1] = p[1] << 1 | p[0] >> 63;
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p[0] = p[0] << 1;
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mbedtls_p384_rum( p );
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}
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static void
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mbedtls_p384_mul( uint64_t X[12],
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const uint64_t A[6], size_t n,
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const uint64_t B[6], size_t m )
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{
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if( n == 6 && m == 6 && X86_HAVE(ADX) && X86_HAVE(BMI2) )
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{
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Mul6x6Adx( X, A, B );
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}
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else
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{
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if( A == X ) A = gc( memcpy( malloc( 6 * 8 ), A, 6 * 8 ) );
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if( B == X ) B = gc( memcpy( malloc( 6 * 8 ), B, 6 * 8 ) );
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Mul( X, A, n, B, m );
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mbedtls_platform_zeroize( X + n + m, (12 - n - m) * 8 );
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}
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mbedtls_p384_mod( X );
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}
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static void
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mbedtls_p384_plu( uint64_t A[7],
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const uint64_t B[7] )
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{
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#if defined(__x86_64__) && !defined(__STRICT_ANSI__)
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asm("mov\t%1,%%rax\n\t"
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"add\t%%rax,%0\n\t"
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"mov\t8+%1,%%rax\n\t"
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"adc\t%%rax,8+%0\n\t"
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"mov\t16+%1,%%rax\n\t"
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"adc\t%%rax,16+%0\n\t"
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"mov\t24+%1,%%rax\n\t"
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"adc\t%%rax,24+%0\n\t"
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"mov\t32+%1,%%rax\n\t"
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"adc\t%%rax,32+%0\n\t"
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"mov\t40+%1,%%rax\n\t"
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"adc\t%%rax,40+%0\n\t"
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"mov\t48+%1,%%rax\n\t"
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"adc\t%%rax,48+%0"
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: /* no outputs */
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: "o"(*A), "o"(*B)
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: "rax", "memory", "cc");
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#else
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uint64_t c;
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ADC( A[0], A[0], B[0], 0, c );
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ADC( A[1], A[1], B[1], c, c );
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ADC( A[2], A[2], B[2], c, c );
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ADC( A[3], A[3], B[3], c, c );
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ADC( A[4], A[4], B[4], c, c );
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ADC( A[5], A[5], B[5], c, c );
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ADC( A[6], A[6], B[6], c, c );
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#endif
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}
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static void
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mbedtls_p384_slu( uint64_t A[7],
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const uint64_t B[7] )
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{
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#if defined(__x86_64__) && !defined(__STRICT_ANSI__)
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asm("mov\t%1,%%rax\n\t"
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"sub\t%%rax,%0\n\t"
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"mov\t8+%1,%%rax\n\t"
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"sbb\t%%rax,8+%0\n\t"
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"mov\t16+%1,%%rax\n\t"
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"sbb\t%%rax,16+%0\n\t"
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"mov\t24+%1,%%rax\n\t"
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"sbb\t%%rax,24+%0\n\t"
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"mov\t32+%1,%%rax\n\t"
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"sbb\t%%rax,32+%0\n\t"
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"mov\t40+%1,%%rax\n\t"
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"sbb\t%%rax,40+%0\n\t"
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"mov\t48+%1,%%rax\n\t"
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"sbb\t%%rax,48+%0"
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: /* no outputs */
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: "o"(*A), "o"(*B)
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: "rax", "memory", "cc");
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#else
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uint64_t c;
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SBB( A[0], A[0], B[0], 0, c );
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SBB( A[1], A[1], B[1], c, c );
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SBB( A[2], A[2], B[2], c, c );
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SBB( A[3], A[3], B[3], c, c );
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SBB( A[4], A[4], B[4], c, c );
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SBB( A[5], A[5], B[5], c, c );
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SBB( A[6], A[6], B[6], c, c );
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#endif
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}
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static void
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mbedtls_p384_add( uint64_t X[7],
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const uint64_t A[6],
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const uint64_t B[6] )
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{
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#if defined(__x86_64__) && !defined(__STRICT_ANSI__)
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asm("xor\t%%rcx,%%rcx\n\t"
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"mov\t%1,%%rax\n\t"
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"add\t%2,%%rax\n\t"
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"mov\t%%rax,%0\n\t"
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"mov\t8+%1,%%rax\n\t"
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"adc\t8+%2,%%rax\n\t"
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"mov\t%%rax,8+%0\n\t"
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"mov\t16+%1,%%rax\n\t"
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"adc\t16+%2,%%rax\n\t"
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"mov\t%%rax,16+%0\n\t"
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"mov\t24+%1,%%rax\n\t"
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"adc\t24+%2,%%rax\n\t"
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"mov\t%%rax,24+%0\n\t"
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"mov\t32+%1,%%rax\n\t"
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"adc\t32+%2,%%rax\n\t"
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"mov\t%%rax,32+%0\n\t"
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"mov\t40+%1,%%rax\n\t"
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"adc\t40+%2,%%rax\n\t"
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"mov\t%%rax,40+%0\n\t"
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"adc\t$0,%%rcx\n\t"
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"mov\t%%rcx,48+%0"
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: "+o"(*X)
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: "o"(*A), "o"(*B)
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: "rax", "rcx", "memory", "cc");
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#else
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uint64_t c;
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ADC( X[0], A[0], B[0], 0, c );
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ADC( X[1], A[1], B[1], c, c );
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ADC( X[2], A[2], B[2], c, c );
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ADC( X[3], A[3], B[3], c, c );
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ADC( X[4], A[4], B[4], c, c );
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ADC( X[5], A[5], B[5], c, X[6] );
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#endif
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mbedtls_p384_rum( X );
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DCHECK_EQ(0, X[6]);
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}
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static void
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mbedtls_p384_sub( uint64_t X[7],
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const uint64_t A[6],
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const uint64_t B[6] )
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{
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#if defined(__x86_64__) && !defined(__STRICT_ANSI__)
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asm("xor\t%%rcx,%%rcx\n\t"
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"mov\t%1,%%rax\n\t"
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"sub\t%2,%%rax\n\t"
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"mov\t%%rax,%0\n\t"
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"mov\t8+%1,%%rax\n\t"
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"sbb\t8+%2,%%rax\n\t"
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"mov\t%%rax,8+%0\n\t"
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"mov\t16+%1,%%rax\n\t"
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"sbb\t16+%2,%%rax\n\t"
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"mov\t%%rax,16+%0\n\t"
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"mov\t24+%1,%%rax\n\t"
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"sbb\t24+%2,%%rax\n\t"
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"mov\t%%rax,24+%0\n\t"
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"mov\t32+%1,%%rax\n\t"
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"sbb\t32+%2,%%rax\n\t"
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"mov\t%%rax,32+%0\n\t"
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"mov\t40+%1,%%rax\n\t"
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"sbb\t40+%2,%%rax\n\t"
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"mov\t%%rax,40+%0\n\t"
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"sbb\t$0,%%rcx\n\t"
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"mov\t%%rcx,48+%0"
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: "+o"(*X)
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: "o"(*A), "o"(*B)
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: "rax", "rcx", "memory", "cc");
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#else
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uint64_t c;
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SBB( X[0], A[0], B[0], 0, c );
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SBB( X[1], A[1], B[1], c, c );
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SBB( X[2], A[2], B[2], c, c );
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SBB( X[3], A[3], B[3], c, c );
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SBB( X[4], A[4], B[4], c, c );
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SBB( X[5], A[5], B[5], c, c );
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X[6] = -c;
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#endif
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while( (int64_t)X[6] < 0 )
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mbedtls_p384_gro( X );
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DCHECK_EQ(0, X[6]);
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}
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static void
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mbedtls_p384_hub( uint64_t A[7],
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const uint64_t B[6] )
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{
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#if defined(__x86_64__) && !defined(__STRICT_ANSI__)
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asm("xor\t%%rcx,%%rcx\n\t"
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"mov\t%1,%%rax\n\t"
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"sub\t%%rax,%0\n\t"
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"mov\t8+%1,%%rax\n\t"
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"sbb\t%%rax,8+%0\n\t"
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"mov\t16+%1,%%rax\n\t"
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"sbb\t%%rax,16+%0\n\t"
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"mov\t24+%1,%%rax\n\t"
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"sbb\t%%rax,24+%0\n\t"
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"mov\t32+%1,%%rax\n\t"
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"sbb\t%%rax,32+%0\n\t"
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"mov\t40+%1,%%rax\n\t"
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"sbb\t%%rax,40+%0\n\t"
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"sbb\t$0,%%rcx\n\t"
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"mov\t%%rcx,48+%0"
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: "+o"(*A)
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: "o"(*B)
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: "rax", "rcx", "memory", "cc");
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while( (int64_t)A[6] < 0 )
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mbedtls_p384_gro( A );
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DCHECK_EQ(0, A[6]);
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#else
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mbedtls_p384_sub(A, A, B);
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#endif
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}
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static inline void
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mbedtls_p384_cop( uint64_t X[6],
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const uint64_t Y[6] )
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{
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memcpy( X, Y, 6*8 );
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}
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static int
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mbedtls_p384_dim( mbedtls_ecp_point *R )
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{
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int ret;
|
|
if( R->X.n < 6 && ( ret = mbedtls_mpi_grow( &R->X, 6 ) ) ) return( ret );
|
|
if( R->Y.n < 6 && ( ret = mbedtls_mpi_grow( &R->Y, 6 ) ) ) return( ret );
|
|
if( R->Z.n < 6 && ( ret = mbedtls_mpi_grow( &R->Z, 6 ) ) ) return( ret );
|
|
return( 0 );
|
|
}
|
|
|
|
int mbedtls_p384_double_jac( const mbedtls_ecp_group *G,
|
|
const mbedtls_ecp_point *P,
|
|
mbedtls_ecp_point *R )
|
|
{
|
|
int ret;
|
|
uint64_t T[4][12];
|
|
if( IsAsan() ) __asan_verify( P, sizeof( *P ) );
|
|
if( IsAsan() ) __asan_verify( R, sizeof( *R ) );
|
|
if( ( ret = mbedtls_p384_dim( R ) ) ) return( ret );
|
|
if( ( ret = mbedtls_p384_dim( P ) ) ) return( ret );
|
|
mbedtls_platform_zeroize( T, sizeof( T ) );
|
|
mbedtls_p384_mul( T[1], P->Z.p, 6, P->Z.p, 6 );
|
|
mbedtls_p384_add( T[2], P->X.p, T[1] );
|
|
mbedtls_p384_sub( T[3], P->X.p, T[1] );
|
|
mbedtls_p384_mul( T[1], T[2], 6, T[3], 6 );
|
|
mbedtls_mpi_mul_hlp1( 6, T[1], T[0], 3 );
|
|
mbedtls_p384_rum( T[0] );
|
|
mbedtls_p384_mul( T[2], P->Y.p, 6, P->Y.p, 6 );
|
|
mbedtls_p384_shl( T[2] );
|
|
mbedtls_p384_mul( T[1], P->X.p, 6, T[2], 6 );
|
|
mbedtls_p384_shl( T[1] );
|
|
mbedtls_p384_mul( T[3], T[2], 6, T[2], 6 );
|
|
mbedtls_p384_shl( T[3] );
|
|
mbedtls_p384_mul( T[2], T[0], 6, T[0], 6 );
|
|
mbedtls_p384_hub( T[2], T[1] );
|
|
mbedtls_p384_hub( T[2], T[1] );
|
|
mbedtls_p384_hub( T[1], T[2] );
|
|
mbedtls_p384_mul( T[1], T[1], 6, T[0], 6 );
|
|
mbedtls_p384_hub( T[1], T[3] );
|
|
mbedtls_p384_mul( T[3], P->Y.p, 6, P->Z.p, 6 );
|
|
mbedtls_p384_shl( T[3] );
|
|
mbedtls_p384_cop( R->X.p, T[2] );
|
|
mbedtls_p384_cop( R->Y.p, T[1] );
|
|
mbedtls_p384_cop( R->Z.p, T[3] );
|
|
return( 0 );
|
|
}
|
|
|
|
int mbedtls_p384_add_mixed( const mbedtls_ecp_group *G,
|
|
const mbedtls_ecp_point *P,
|
|
const mbedtls_ecp_point *Q,
|
|
mbedtls_ecp_point *R )
|
|
{
|
|
int ret;
|
|
struct {
|
|
uint64_t X[12], Y[12], Z[12];
|
|
uint64_t T1[12], T2[12], T3[12], T4[12];
|
|
size_t Xn, Yn, Zn, QXn, QYn;
|
|
} s;
|
|
if( IsAsan() ) __asan_verify( G, sizeof( *G ) );
|
|
if( IsAsan() ) __asan_verify( P, sizeof( *P ) );
|
|
if( IsAsan() ) __asan_verify( Q, sizeof( *Q ) );
|
|
if( IsAsan() ) __asan_verify( R, sizeof( *R ) );
|
|
if( ( ret = mbedtls_p384_dim( R ) ) ) return( ret );
|
|
mbedtls_platform_zeroize( &s, sizeof( s ) );
|
|
s.Xn = mbedtls_mpi_limbs( &P->X );
|
|
s.Yn = mbedtls_mpi_limbs( &P->Y );
|
|
s.Zn = mbedtls_mpi_limbs( &P->Z );
|
|
s.QXn = mbedtls_mpi_limbs( &Q->X );
|
|
s.QYn = mbedtls_mpi_limbs( &Q->Y );
|
|
CHECK_LE( s.Xn, 6 );
|
|
CHECK_LE( s.Yn, 6 );
|
|
CHECK_LE( s.Zn, 6 );
|
|
CHECK_LE( s.QXn, 6 );
|
|
CHECK_LE( s.QYn, 6 );
|
|
memcpy( s.X, P->X.p, s.Xn * 8 );
|
|
memcpy( s.Y, P->Y.p, s.Yn * 8 );
|
|
memcpy( s.Z, P->Z.p, s.Zn * 8 );
|
|
mbedtls_p384_mul( s.T1, s.Z, s.Zn, s.Z, s.Zn );
|
|
mbedtls_p384_mul( s.T2, s.T1, 6, s.Z, s.Zn );
|
|
mbedtls_p384_mul( s.T1, s.T1, 6, Q->X.p, s.QXn );
|
|
mbedtls_p384_mul( s.T2, s.T2, 6, Q->Y.p, s.QYn );
|
|
mbedtls_p384_hub( s.T1, s.X );
|
|
mbedtls_p384_hub( s.T2, s.Y );
|
|
if( mbedtls_p384_isz( s.T1 ) )
|
|
{
|
|
if( mbedtls_p384_isz( s.T2 ) )
|
|
return( mbedtls_p384_double_jac( G, P, R ) );
|
|
else
|
|
return( mbedtls_ecp_set_zero( R ) );
|
|
}
|
|
mbedtls_p384_mul( s.Z, s.Z, s.Zn, s.T1, 6 );
|
|
mbedtls_p384_mul( s.T3, s.T1, 6, s.T1, 6 );
|
|
mbedtls_p384_mul( s.T4, s.T3, 6, s.T1, 6 );
|
|
mbedtls_p384_mul( s.T3, s.T3, 6, s.X, s.Xn );
|
|
mbedtls_p384_cop( s.T1, s.T3 );
|
|
mbedtls_p384_shl( s.T1 );
|
|
mbedtls_p384_mul( s.X, s.T2, 6, s.T2, 6 );
|
|
mbedtls_p384_hub( s.X, s.T1 );
|
|
mbedtls_p384_hub( s.X, s.T4 );
|
|
mbedtls_p384_hub( s.T3, s.X );
|
|
mbedtls_p384_mul( s.T3, s.T3, 6, s.T2, 6 );
|
|
mbedtls_p384_mul( s.T4, s.T4, 6, s.Y, s.Yn );
|
|
mbedtls_p384_sub( s.Y, s.T3, s.T4 );
|
|
mbedtls_p384_cop( R->X.p, s.X );
|
|
mbedtls_p384_cop( R->Y.p, s.Y );
|
|
mbedtls_p384_cop( R->Z.p, s.Z );
|
|
mbedtls_platform_zeroize( &s, sizeof( s ) );
|
|
return( 0 );
|
|
}
|
|
|
|
static void
|
|
mbedtls_p384_inv( uint64_t X[6],
|
|
const uint64_t A[6],
|
|
const uint64_t N[6] )
|
|
{
|
|
uint64_t TA[7], TU[7], TV[7], UV[4][7];
|
|
mbedtls_platform_zeroize( UV, sizeof( UV ) );
|
|
*(uint64_t *)mempcpy( TA, A, 6*8 ) = 0;
|
|
*(uint64_t *)mempcpy( TU, A, 6*8 ) = 0;
|
|
*(uint64_t *)mempcpy( TV, N, 6*8 ) = 0;
|
|
UV[0][0] = 1;
|
|
UV[3][0] = 1;
|
|
do {
|
|
while( ~TU[0] & 1 ){
|
|
mbedtls_p384_sar( TU );
|
|
if( ( UV[0][0] | UV[1][0] ) & 1 ){
|
|
mbedtls_p384_gro( UV[0] );
|
|
mbedtls_p384_slu( UV[1], TA );
|
|
}
|
|
mbedtls_p384_sar( UV[0] );
|
|
mbedtls_p384_sar( UV[1] );
|
|
}
|
|
while( ~TV[0] & 1 ){
|
|
mbedtls_p384_sar( TV );
|
|
if( ( UV[2][0] | UV[3][0] ) & 1 ){
|
|
mbedtls_p384_gro( UV[2] );
|
|
mbedtls_p384_slu( UV[3], TA );
|
|
}
|
|
mbedtls_p384_sar( UV[2] );
|
|
mbedtls_p384_sar( UV[3] );
|
|
}
|
|
if( mbedtls_p384_cmp( TU, TV ) >= 0 ){
|
|
mbedtls_p384_slu( TU, TV );
|
|
mbedtls_p384_slu( UV[0], UV[2] );
|
|
mbedtls_p384_slu( UV[1], UV[3] );
|
|
} else {
|
|
mbedtls_p384_slu( TV, TU );
|
|
mbedtls_p384_slu( UV[2], UV[0] );
|
|
mbedtls_p384_slu( UV[3], UV[1] );
|
|
}
|
|
} while( TU[0] | TU[1] | TU[2] | TU[3] | TU[4] | TU[5] | TU[6] );
|
|
while( (int64_t)UV[2][6] < 0 )
|
|
mbedtls_p384_gro( UV[2] );
|
|
while( mbedtls_p384_gte( UV[2] ) )
|
|
mbedtls_p384_red( UV[2] );
|
|
mbedtls_p384_cop( X, UV[2] );
|
|
}
|
|
|
|
int mbedtls_p384_normalize_jac( const mbedtls_ecp_group *grp,
|
|
mbedtls_ecp_point *pt )
|
|
{
|
|
int ret;
|
|
uint64_t t[12], Zi[12], ZZi[12];
|
|
if(( ret = mbedtls_p384_dim(pt)) ) return( ret );
|
|
mbedtls_p384_inv( Zi, pt->Z.p, grp->P.p );
|
|
mbedtls_p384_mul( ZZi, Zi, 6, Zi, 6 );
|
|
mbedtls_p384_mul( t, pt->X.p, 6, ZZi, 6 );
|
|
mbedtls_p384_cop( pt->X.p, t );
|
|
mbedtls_p384_mul( t, pt->Y.p, 6, ZZi, 6 );
|
|
mbedtls_p384_mul( t, t, 6, Zi, 6 );
|
|
mbedtls_p384_cop( pt->Y.p, t );
|
|
mbedtls_mpi_lset( &pt->Z, 1 );
|
|
return( 0 );
|
|
}
|
|
|
|
int mbedtls_p384_normalize_jac_many( const mbedtls_ecp_group *grp,
|
|
mbedtls_ecp_point *T[], size_t n )
|
|
{
|
|
size_t i;
|
|
uint64_t *c, u[12], ta[12], Zi[12], ZZi[12];
|
|
if( !( c = mbedtls_calloc( n, 12*8 ) ) )
|
|
return( MBEDTLS_ERR_ECP_ALLOC_FAILED );
|
|
memcpy( c, T[0]->Z.p, T[0]->Z.n*8 );
|
|
for( i = 1; i < n; i++ )
|
|
mbedtls_p384_mul( c+i*12, c+(i-1)*12, 6, T[i]->Z.p, 6 );
|
|
mbedtls_p384_inv( u, c+(n-1)*12, grp->P.p );
|
|
for( i = n - 1; ; i-- ){
|
|
if( !i ){
|
|
mbedtls_p384_cop( Zi, u );
|
|
} else {
|
|
mbedtls_p384_mul( Zi, u, 6, c+(i-1)*12, 6 );
|
|
mbedtls_p384_mul( u, u, 6, T[i]->Z.p, 6 );
|
|
}
|
|
mbedtls_p384_mul( ZZi, Zi, 6, Zi, 6 );
|
|
mbedtls_p384_mul( ta, T[i]->X.p, 6, ZZi, 6 );
|
|
memcpy( T[i]->X.p, ta, 6 * 8 );
|
|
mbedtls_p384_mul( ta, T[i]->Y.p, 6, ZZi, 6 );
|
|
mbedtls_p384_mul( ta, ta, 6, Zi, 6 );
|
|
memcpy( T[i]->Y.p, ta, 6 * 8 );
|
|
mbedtls_mpi_free( &T[i]->Z );
|
|
if( !i ) break;
|
|
}
|
|
mbedtls_platform_zeroize( ta, sizeof( ta ) );
|
|
mbedtls_platform_zeroize( c, n*12*8 );
|
|
mbedtls_free( c );
|
|
return( 0 );
|
|
}
|