summaryrefslogtreecommitdiffstats
path: root/vendor/golang.org/x/crypto/curve25519
diff options
context:
space:
mode:
Diffstat (limited to 'vendor/golang.org/x/crypto/curve25519')
-rw-r--r--vendor/golang.org/x/crypto/curve25519/LICENSE27
-rw-r--r--vendor/golang.org/x/crypto/curve25519/const_amd64.h8
-rw-r--r--vendor/golang.org/x/crypto/curve25519/const_amd64.s20
-rw-r--r--vendor/golang.org/x/crypto/curve25519/cswap_amd64.s65
-rw-r--r--vendor/golang.org/x/crypto/curve25519/curve25519.go834
-rw-r--r--vendor/golang.org/x/crypto/curve25519/doc.go23
-rw-r--r--vendor/golang.org/x/crypto/curve25519/freeze_amd64.s73
-rw-r--r--vendor/golang.org/x/crypto/curve25519/ladderstep_amd64.s1377
-rw-r--r--vendor/golang.org/x/crypto/curve25519/mont25519_amd64.go240
-rw-r--r--vendor/golang.org/x/crypto/curve25519/mul_amd64.s169
-rw-r--r--vendor/golang.org/x/crypto/curve25519/square_amd64.s132
11 files changed, 2968 insertions, 0 deletions
diff --git a/vendor/golang.org/x/crypto/curve25519/LICENSE b/vendor/golang.org/x/crypto/curve25519/LICENSE
new file mode 100644
index 00000000..6a66aea5
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. 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 Google Inc. 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"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 THE COPYRIGHT
+OWNER 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.
diff --git a/vendor/golang.org/x/crypto/curve25519/const_amd64.h b/vendor/golang.org/x/crypto/curve25519/const_amd64.h
new file mode 100644
index 00000000..b3f74162
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/const_amd64.h
@@ -0,0 +1,8 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+#define REDMASK51 0x0007FFFFFFFFFFFF
diff --git a/vendor/golang.org/x/crypto/curve25519/const_amd64.s b/vendor/golang.org/x/crypto/curve25519/const_amd64.s
new file mode 100644
index 00000000..ee7b4bd5
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/const_amd64.s
@@ -0,0 +1,20 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+// +build amd64,!gccgo,!appengine
+
+// These constants cannot be encoded in non-MOVQ immediates.
+// We access them directly from memory instead.
+
+DATA ·_121666_213(SB)/8, $996687872
+GLOBL ·_121666_213(SB), 8, $8
+
+DATA ·_2P0(SB)/8, $0xFFFFFFFFFFFDA
+GLOBL ·_2P0(SB), 8, $8
+
+DATA ·_2P1234(SB)/8, $0xFFFFFFFFFFFFE
+GLOBL ·_2P1234(SB), 8, $8
diff --git a/vendor/golang.org/x/crypto/curve25519/cswap_amd64.s b/vendor/golang.org/x/crypto/curve25519/cswap_amd64.s
new file mode 100644
index 00000000..cd793a5b
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/cswap_amd64.s
@@ -0,0 +1,65 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build amd64,!gccgo,!appengine
+
+// func cswap(inout *[4][5]uint64, v uint64)
+TEXT ·cswap(SB),7,$0
+ MOVQ inout+0(FP),DI
+ MOVQ v+8(FP),SI
+
+ SUBQ $1, SI
+ NOTQ SI
+ MOVQ SI, X15
+ PSHUFD $0x44, X15, X15
+
+ MOVOU 0(DI), X0
+ MOVOU 16(DI), X2
+ MOVOU 32(DI), X4
+ MOVOU 48(DI), X6
+ MOVOU 64(DI), X8
+ MOVOU 80(DI), X1
+ MOVOU 96(DI), X3
+ MOVOU 112(DI), X5
+ MOVOU 128(DI), X7
+ MOVOU 144(DI), X9
+
+ MOVO X1, X10
+ MOVO X3, X11
+ MOVO X5, X12
+ MOVO X7, X13
+ MOVO X9, X14
+
+ PXOR X0, X10
+ PXOR X2, X11
+ PXOR X4, X12
+ PXOR X6, X13
+ PXOR X8, X14
+ PAND X15, X10
+ PAND X15, X11
+ PAND X15, X12
+ PAND X15, X13
+ PAND X15, X14
+ PXOR X10, X0
+ PXOR X10, X1
+ PXOR X11, X2
+ PXOR X11, X3
+ PXOR X12, X4
+ PXOR X12, X5
+ PXOR X13, X6
+ PXOR X13, X7
+ PXOR X14, X8
+ PXOR X14, X9
+
+ MOVOU X0, 0(DI)
+ MOVOU X2, 16(DI)
+ MOVOU X4, 32(DI)
+ MOVOU X6, 48(DI)
+ MOVOU X8, 64(DI)
+ MOVOU X1, 80(DI)
+ MOVOU X3, 96(DI)
+ MOVOU X5, 112(DI)
+ MOVOU X7, 128(DI)
+ MOVOU X9, 144(DI)
+ RET
diff --git a/vendor/golang.org/x/crypto/curve25519/curve25519.go b/vendor/golang.org/x/crypto/curve25519/curve25519.go
new file mode 100644
index 00000000..cb8fbc57
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/curve25519.go
@@ -0,0 +1,834 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// We have an implementation in amd64 assembly so this code is only run on
+// non-amd64 platforms. The amd64 assembly does not support gccgo.
+// +build !amd64 gccgo appengine
+
+package curve25519
+
+import (
+ "encoding/binary"
+)
+
+// This code is a port of the public domain, "ref10" implementation of
+// curve25519 from SUPERCOP 20130419 by D. J. Bernstein.
+
+// fieldElement represents an element of the field GF(2^255 - 19). An element
+// t, entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77
+// t[3]+2^102 t[4]+...+2^230 t[9]. Bounds on each t[i] vary depending on
+// context.
+type fieldElement [10]int32
+
+func feZero(fe *fieldElement) {
+ for i := range fe {
+ fe[i] = 0
+ }
+}
+
+func feOne(fe *fieldElement) {
+ feZero(fe)
+ fe[0] = 1
+}
+
+func feAdd(dst, a, b *fieldElement) {
+ for i := range dst {
+ dst[i] = a[i] + b[i]
+ }
+}
+
+func feSub(dst, a, b *fieldElement) {
+ for i := range dst {
+ dst[i] = a[i] - b[i]
+ }
+}
+
+func feCopy(dst, src *fieldElement) {
+ for i := range dst {
+ dst[i] = src[i]
+ }
+}
+
+// feCSwap replaces (f,g) with (g,f) if b == 1; replaces (f,g) with (f,g) if b == 0.
+//
+// Preconditions: b in {0,1}.
+func feCSwap(f, g *fieldElement, b int32) {
+ b = -b
+ for i := range f {
+ t := b & (f[i] ^ g[i])
+ f[i] ^= t
+ g[i] ^= t
+ }
+}
+
+// load3 reads a 24-bit, little-endian value from in.
+func load3(in []byte) int64 {
+ var r int64
+ r = int64(in[0])
+ r |= int64(in[1]) << 8
+ r |= int64(in[2]) << 16
+ return r
+}
+
+// load4 reads a 32-bit, little-endian value from in.
+func load4(in []byte) int64 {
+ return int64(binary.LittleEndian.Uint32(in))
+}
+
+func feFromBytes(dst *fieldElement, src *[32]byte) {
+ h0 := load4(src[:])
+ h1 := load3(src[4:]) << 6
+ h2 := load3(src[7:]) << 5
+ h3 := load3(src[10:]) << 3
+ h4 := load3(src[13:]) << 2
+ h5 := load4(src[16:])
+ h6 := load3(src[20:]) << 7
+ h7 := load3(src[23:]) << 5
+ h8 := load3(src[26:]) << 4
+ h9 := load3(src[29:]) << 2
+
+ var carry [10]int64
+ carry[9] = (h9 + 1<<24) >> 25
+ h0 += carry[9] * 19
+ h9 -= carry[9] << 25
+ carry[1] = (h1 + 1<<24) >> 25
+ h2 += carry[1]
+ h1 -= carry[1] << 25
+ carry[3] = (h3 + 1<<24) >> 25
+ h4 += carry[3]
+ h3 -= carry[3] << 25
+ carry[5] = (h5 + 1<<24) >> 25
+ h6 += carry[5]
+ h5 -= carry[5] << 25
+ carry[7] = (h7 + 1<<24) >> 25
+ h8 += carry[7]
+ h7 -= carry[7] << 25
+
+ carry[0] = (h0 + 1<<25) >> 26
+ h1 += carry[0]
+ h0 -= carry[0] << 26
+ carry[2] = (h2 + 1<<25) >> 26
+ h3 += carry[2]
+ h2 -= carry[2] << 26
+ carry[4] = (h4 + 1<<25) >> 26
+ h5 += carry[4]
+ h4 -= carry[4] << 26
+ carry[6] = (h6 + 1<<25) >> 26
+ h7 += carry[6]
+ h6 -= carry[6] << 26
+ carry[8] = (h8 + 1<<25) >> 26
+ h9 += carry[8]
+ h8 -= carry[8] << 26
+
+ dst[0] = int32(h0)
+ dst[1] = int32(h1)
+ dst[2] = int32(h2)
+ dst[3] = int32(h3)
+ dst[4] = int32(h4)
+ dst[5] = int32(h5)
+ dst[6] = int32(h6)
+ dst[7] = int32(h7)
+ dst[8] = int32(h8)
+ dst[9] = int32(h9)
+}
+
+// feToBytes marshals h to s.
+// Preconditions:
+// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+//
+// Write p=2^255-19; q=floor(h/p).
+// Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
+//
+// Proof:
+// Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4.
+// Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4.
+//
+// Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
+// Then 0<y<1.
+//
+// Write r=h-pq.
+// Have 0<=r<=p-1=2^255-20.
+// Thus 0<=r+19(2^-255)r<r+19(2^-255)2^255<=2^255-1.
+//
+// Write x=r+19(2^-255)r+y.
+// Then 0<x<2^255 so floor(2^(-255)x) = 0 so floor(q+2^(-255)x) = q.
+//
+// Have q+2^(-255)x = 2^(-255)(h + 19 2^(-25) h9 + 2^(-1))
+// so floor(2^(-255)(h + 19 2^(-25) h9 + 2^(-1))) = q.
+func feToBytes(s *[32]byte, h *fieldElement) {
+ var carry [10]int32
+
+ q := (19*h[9] + (1 << 24)) >> 25
+ q = (h[0] + q) >> 26
+ q = (h[1] + q) >> 25
+ q = (h[2] + q) >> 26
+ q = (h[3] + q) >> 25
+ q = (h[4] + q) >> 26
+ q = (h[5] + q) >> 25
+ q = (h[6] + q) >> 26
+ q = (h[7] + q) >> 25
+ q = (h[8] + q) >> 26
+ q = (h[9] + q) >> 25
+
+ // Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20.
+ h[0] += 19 * q
+ // Goal: Output h-2^255 q, which is between 0 and 2^255-20.
+
+ carry[0] = h[0] >> 26
+ h[1] += carry[0]
+ h[0] -= carry[0] << 26
+ carry[1] = h[1] >> 25
+ h[2] += carry[1]
+ h[1] -= carry[1] << 25
+ carry[2] = h[2] >> 26
+ h[3] += carry[2]
+ h[2] -= carry[2] << 26
+ carry[3] = h[3] >> 25
+ h[4] += carry[3]
+ h[3] -= carry[3] << 25
+ carry[4] = h[4] >> 26
+ h[5] += carry[4]
+ h[4] -= carry[4] << 26
+ carry[5] = h[5] >> 25
+ h[6] += carry[5]
+ h[5] -= carry[5] << 25
+ carry[6] = h[6] >> 26
+ h[7] += carry[6]
+ h[6] -= carry[6] << 26
+ carry[7] = h[7] >> 25
+ h[8] += carry[7]
+ h[7] -= carry[7] << 25
+ carry[8] = h[8] >> 26
+ h[9] += carry[8]
+ h[8] -= carry[8] << 26
+ carry[9] = h[9] >> 25
+ h[9] -= carry[9] << 25
+ // h10 = carry9
+
+ // Goal: Output h[0]+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
+ // Have h[0]+...+2^230 h[9] between 0 and 2^255-1;
+ // evidently 2^255 h10-2^255 q = 0.
+ // Goal: Output h[0]+...+2^230 h[9].
+
+ s[0] = byte(h[0] >> 0)
+ s[1] = byte(h[0] >> 8)
+ s[2] = byte(h[0] >> 16)
+ s[3] = byte((h[0] >> 24) | (h[1] << 2))
+ s[4] = byte(h[1] >> 6)
+ s[5] = byte(h[1] >> 14)
+ s[6] = byte((h[1] >> 22) | (h[2] << 3))
+ s[7] = byte(h[2] >> 5)
+ s[8] = byte(h[2] >> 13)
+ s[9] = byte((h[2] >> 21) | (h[3] << 5))
+ s[10] = byte(h[3] >> 3)
+ s[11] = byte(h[3] >> 11)
+ s[12] = byte((h[3] >> 19) | (h[4] << 6))
+ s[13] = byte(h[4] >> 2)
+ s[14] = byte(h[4] >> 10)
+ s[15] = byte(h[4] >> 18)
+ s[16] = byte(h[5] >> 0)
+ s[17] = byte(h[5] >> 8)
+ s[18] = byte(h[5] >> 16)
+ s[19] = byte((h[5] >> 24) | (h[6] << 1))
+ s[20] = byte(h[6] >> 7)
+ s[21] = byte(h[6] >> 15)
+ s[22] = byte((h[6] >> 23) | (h[7] << 3))
+ s[23] = byte(h[7] >> 5)
+ s[24] = byte(h[7] >> 13)
+ s[25] = byte((h[7] >> 21) | (h[8] << 4))
+ s[26] = byte(h[8] >> 4)
+ s[27] = byte(h[8] >> 12)
+ s[28] = byte((h[8] >> 20) | (h[9] << 6))
+ s[29] = byte(h[9] >> 2)
+ s[30] = byte(h[9] >> 10)
+ s[31] = byte(h[9] >> 18)
+}
+
+// feMul calculates h = f * g
+// Can overlap h with f or g.
+//
+// Preconditions:
+// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+// |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+//
+// Postconditions:
+// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+//
+// Notes on implementation strategy:
+//
+// Using schoolbook multiplication.
+// Karatsuba would save a little in some cost models.
+//
+// Most multiplications by 2 and 19 are 32-bit precomputations;
+// cheaper than 64-bit postcomputations.
+//
+// There is one remaining multiplication by 19 in the carry chain;
+// one *19 precomputation can be merged into this,
+// but the resulting data flow is considerably less clean.
+//
+// There are 12 carries below.
+// 10 of them are 2-way parallelizable and vectorizable.
+// Can get away with 11 carries, but then data flow is much deeper.
+//
+// With tighter constraints on inputs can squeeze carries into int32.
+func feMul(h, f, g *fieldElement) {
+ f0 := f[0]
+ f1 := f[1]
+ f2 := f[2]
+ f3 := f[3]
+ f4 := f[4]
+ f5 := f[5]
+ f6 := f[6]
+ f7 := f[7]
+ f8 := f[8]
+ f9 := f[9]
+ g0 := g[0]
+ g1 := g[1]
+ g2 := g[2]
+ g3 := g[3]
+ g4 := g[4]
+ g5 := g[5]
+ g6 := g[6]
+ g7 := g[7]
+ g8 := g[8]
+ g9 := g[9]
+ g1_19 := 19 * g1 // 1.4*2^29
+ g2_19 := 19 * g2 // 1.4*2^30; still ok
+ g3_19 := 19 * g3
+ g4_19 := 19 * g4
+ g5_19 := 19 * g5
+ g6_19 := 19 * g6
+ g7_19 := 19 * g7
+ g8_19 := 19 * g8
+ g9_19 := 19 * g9
+ f1_2 := 2 * f1
+ f3_2 := 2 * f3
+ f5_2 := 2 * f5
+ f7_2 := 2 * f7
+ f9_2 := 2 * f9
+ f0g0 := int64(f0) * int64(g0)
+ f0g1 := int64(f0) * int64(g1)
+ f0g2 := int64(f0) * int64(g2)
+ f0g3 := int64(f0) * int64(g3)
+ f0g4 := int64(f0) * int64(g4)
+ f0g5 := int64(f0) * int64(g5)
+ f0g6 := int64(f0) * int64(g6)
+ f0g7 := int64(f0) * int64(g7)
+ f0g8 := int64(f0) * int64(g8)
+ f0g9 := int64(f0) * int64(g9)
+ f1g0 := int64(f1) * int64(g0)
+ f1g1_2 := int64(f1_2) * int64(g1)
+ f1g2 := int64(f1) * int64(g2)
+ f1g3_2 := int64(f1_2) * int64(g3)
+ f1g4 := int64(f1) * int64(g4)
+ f1g5_2 := int64(f1_2) * int64(g5)
+ f1g6 := int64(f1) * int64(g6)
+ f1g7_2 := int64(f1_2) * int64(g7)
+ f1g8 := int64(f1) * int64(g8)
+ f1g9_38 := int64(f1_2) * int64(g9_19)
+ f2g0 := int64(f2) * int64(g0)
+ f2g1 := int64(f2) * int64(g1)
+ f2g2 := int64(f2) * int64(g2)
+ f2g3 := int64(f2) * int64(g3)
+ f2g4 := int64(f2) * int64(g4)
+ f2g5 := int64(f2) * int64(g5)
+ f2g6 := int64(f2) * int64(g6)
+ f2g7 := int64(f2) * int64(g7)
+ f2g8_19 := int64(f2) * int64(g8_19)
+ f2g9_19 := int64(f2) * int64(g9_19)
+ f3g0 := int64(f3) * int64(g0)
+ f3g1_2 := int64(f3_2) * int64(g1)
+ f3g2 := int64(f3) * int64(g2)
+ f3g3_2 := int64(f3_2) * int64(g3)
+ f3g4 := int64(f3) * int64(g4)
+ f3g5_2 := int64(f3_2) * int64(g5)
+ f3g6 := int64(f3) * int64(g6)
+ f3g7_38 := int64(f3_2) * int64(g7_19)
+ f3g8_19 := int64(f3) * int64(g8_19)
+ f3g9_38 := int64(f3_2) * int64(g9_19)
+ f4g0 := int64(f4) * int64(g0)
+ f4g1 := int64(f4) * int64(g1)
+ f4g2 := int64(f4) * int64(g2)
+ f4g3 := int64(f4) * int64(g3)
+ f4g4 := int64(f4) * int64(g4)
+ f4g5 := int64(f4) * int64(g5)
+ f4g6_19 := int64(f4) * int64(g6_19)
+ f4g7_19 := int64(f4) * int64(g7_19)
+ f4g8_19 := int64(f4) * int64(g8_19)
+ f4g9_19 := int64(f4) * int64(g9_19)
+ f5g0 := int64(f5) * int64(g0)
+ f5g1_2 := int64(f5_2) * int64(g1)
+ f5g2 := int64(f5) * int64(g2)
+ f5g3_2 := int64(f5_2) * int64(g3)
+ f5g4 := int64(f5) * int64(g4)
+ f5g5_38 := int64(f5_2) * int64(g5_19)
+ f5g6_19 := int64(f5) * int64(g6_19)
+ f5g7_38 := int64(f5_2) * int64(g7_19)
+ f5g8_19 := int64(f5) * int64(g8_19)
+ f5g9_38 := int64(f5_2) * int64(g9_19)
+ f6g0 := int64(f6) * int64(g0)
+ f6g1 := int64(f6) * int64(g1)
+ f6g2 := int64(f6) * int64(g2)
+ f6g3 := int64(f6) * int64(g3)
+ f6g4_19 := int64(f6) * int64(g4_19)
+ f6g5_19 := int64(f6) * int64(g5_19)
+ f6g6_19 := int64(f6) * int64(g6_19)
+ f6g7_19 := int64(f6) * int64(g7_19)
+ f6g8_19 := int64(f6) * int64(g8_19)
+ f6g9_19 := int64(f6) * int64(g9_19)
+ f7g0 := int64(f7) * int64(g0)
+ f7g1_2 := int64(f7_2) * int64(g1)
+ f7g2 := int64(f7) * int64(g2)
+ f7g3_38 := int64(f7_2) * int64(g3_19)
+ f7g4_19 := int64(f7) * int64(g4_19)
+ f7g5_38 := int64(f7_2) * int64(g5_19)
+ f7g6_19 := int64(f7) * int64(g6_19)
+ f7g7_38 := int64(f7_2) * int64(g7_19)
+ f7g8_19 := int64(f7) * int64(g8_19)
+ f7g9_38 := int64(f7_2) * int64(g9_19)
+ f8g0 := int64(f8) * int64(g0)
+ f8g1 := int64(f8) * int64(g1)
+ f8g2_19 := int64(f8) * int64(g2_19)
+ f8g3_19 := int64(f8) * int64(g3_19)
+ f8g4_19 := int64(f8) * int64(g4_19)
+ f8g5_19 := int64(f8) * int64(g5_19)
+ f8g6_19 := int64(f8) * int64(g6_19)
+ f8g7_19 := int64(f8) * int64(g7_19)
+ f8g8_19 := int64(f8) * int64(g8_19)
+ f8g9_19 := int64(f8) * int64(g9_19)
+ f9g0 := int64(f9) * int64(g0)
+ f9g1_38 := int64(f9_2) * int64(g1_19)
+ f9g2_19 := int64(f9) * int64(g2_19)
+ f9g3_38 := int64(f9_2) * int64(g3_19)
+ f9g4_19 := int64(f9) * int64(g4_19)
+ f9g5_38 := int64(f9_2) * int64(g5_19)
+ f9g6_19 := int64(f9) * int64(g6_19)
+ f9g7_38 := int64(f9_2) * int64(g7_19)
+ f9g8_19 := int64(f9) * int64(g8_19)
+ f9g9_38 := int64(f9_2) * int64(g9_19)
+ h0 := f0g0 + f1g9_38 + f2g8_19 + f3g7_38 + f4g6_19 + f5g5_38 + f6g4_19 + f7g3_38 + f8g2_19 + f9g1_38
+ h1 := f0g1 + f1g0 + f2g9_19 + f3g8_19 + f4g7_19 + f5g6_19 + f6g5_19 + f7g4_19 + f8g3_19 + f9g2_19
+ h2 := f0g2 + f1g1_2 + f2g0 + f3g9_38 + f4g8_19 + f5g7_38 + f6g6_19 + f7g5_38 + f8g4_19 + f9g3_38
+ h3 := f0g3 + f1g2 + f2g1 + f3g0 + f4g9_19 + f5g8_19 + f6g7_19 + f7g6_19 + f8g5_19 + f9g4_19
+ h4 := f0g4 + f1g3_2 + f2g2 + f3g1_2 + f4g0 + f5g9_38 + f6g8_19 + f7g7_38 + f8g6_19 + f9g5_38
+ h5 := f0g5 + f1g4 + f2g3 + f3g2 + f4g1 + f5g0 + f6g9_19 + f7g8_19 + f8g7_19 + f9g6_19
+ h6 := f0g6 + f1g5_2 + f2g4 + f3g3_2 + f4g2 + f5g1_2 + f6g0 + f7g9_38 + f8g8_19 + f9g7_38
+ h7 := f0g7 + f1g6 + f2g5 + f3g4 + f4g3 + f5g2 + f6g1 + f7g0 + f8g9_19 + f9g8_19
+ h8 := f0g8 + f1g7_2 + f2g6 + f3g5_2 + f4g4 + f5g3_2 + f6g2 + f7g1_2 + f8g0 + f9g9_38
+ h9 := f0g9 + f1g8 + f2g7 + f3g6 + f4g5 + f5g4 + f6g3 + f7g2 + f8g1 + f9g0
+ var carry [10]int64
+
+ // |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38))
+ // i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8
+ // |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19))
+ // i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9
+
+ carry[0] = (h0 + (1 << 25)) >> 26
+ h1 += carry[0]
+ h0 -= carry[0] << 26
+ carry[4] = (h4 + (1 << 25)) >> 26
+ h5 += carry[4]
+ h4 -= carry[4] << 26
+ // |h0| <= 2^25
+ // |h4| <= 2^25
+ // |h1| <= 1.51*2^58
+ // |h5| <= 1.51*2^58
+
+ carry[1] = (h1 + (1 << 24)) >> 25
+ h2 += carry[1]
+ h1 -= carry[1] << 25
+ carry[5] = (h5 + (1 << 24)) >> 25
+ h6 += carry[5]
+ h5 -= carry[5] << 25
+ // |h1| <= 2^24; from now on fits into int32
+ // |h5| <= 2^24; from now on fits into int32
+ // |h2| <= 1.21*2^59
+ // |h6| <= 1.21*2^59
+
+ carry[2] = (h2 + (1 << 25)) >> 26
+ h3 += carry[2]
+ h2 -= carry[2] << 26
+ carry[6] = (h6 + (1 << 25)) >> 26
+ h7 += carry[6]
+ h6 -= carry[6] << 26
+ // |h2| <= 2^25; from now on fits into int32 unchanged
+ // |h6| <= 2^25; from now on fits into int32 unchanged
+ // |h3| <= 1.51*2^58
+ // |h7| <= 1.51*2^58
+
+ carry[3] = (h3 + (1 << 24)) >> 25
+ h4 += carry[3]
+ h3 -= carry[3] << 25
+ carry[7] = (h7 + (1 << 24)) >> 25
+ h8 += carry[7]
+ h7 -= carry[7] << 25
+ // |h3| <= 2^24; from now on fits into int32 unchanged
+ // |h7| <= 2^24; from now on fits into int32 unchanged
+ // |h4| <= 1.52*2^33
+ // |h8| <= 1.52*2^33
+
+ carry[4] = (h4 + (1 << 25)) >> 26
+ h5 += carry[4]
+ h4 -= carry[4] << 26
+ carry[8] = (h8 + (1 << 25)) >> 26
+ h9 += carry[8]
+ h8 -= carry[8] << 26
+ // |h4| <= 2^25; from now on fits into int32 unchanged
+ // |h8| <= 2^25; from now on fits into int32 unchanged
+ // |h5| <= 1.01*2^24
+ // |h9| <= 1.51*2^58
+
+ carry[9] = (h9 + (1 << 24)) >> 25
+ h0 += carry[9] * 19
+ h9 -= carry[9] << 25
+ // |h9| <= 2^24; from now on fits into int32 unchanged
+ // |h0| <= 1.8*2^37
+
+ carry[0] = (h0 + (1 << 25)) >> 26
+ h1 += carry[0]
+ h0 -= carry[0] << 26
+ // |h0| <= 2^25; from now on fits into int32 unchanged
+ // |h1| <= 1.01*2^24
+
+ h[0] = int32(h0)
+ h[1] = int32(h1)
+ h[2] = int32(h2)
+ h[3] = int32(h3)
+ h[4] = int32(h4)
+ h[5] = int32(h5)
+ h[6] = int32(h6)
+ h[7] = int32(h7)
+ h[8] = int32(h8)
+ h[9] = int32(h9)
+}
+
+// feSquare calculates h = f*f. Can overlap h with f.
+//
+// Preconditions:
+// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+//
+// Postconditions:
+// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+func feSquare(h, f *fieldElement) {
+ f0 := f[0]
+ f1 := f[1]
+ f2 := f[2]
+ f3 := f[3]
+ f4 := f[4]
+ f5 := f[5]
+ f6 := f[6]
+ f7 := f[7]
+ f8 := f[8]
+ f9 := f[9]
+ f0_2 := 2 * f0
+ f1_2 := 2 * f1
+ f2_2 := 2 * f2
+ f3_2 := 2 * f3
+ f4_2 := 2 * f4
+ f5_2 := 2 * f5
+ f6_2 := 2 * f6
+ f7_2 := 2 * f7
+ f5_38 := 38 * f5 // 1.31*2^30
+ f6_19 := 19 * f6 // 1.31*2^30
+ f7_38 := 38 * f7 // 1.31*2^30
+ f8_19 := 19 * f8 // 1.31*2^30
+ f9_38 := 38 * f9 // 1.31*2^30
+ f0f0 := int64(f0) * int64(f0)
+ f0f1_2 := int64(f0_2) * int64(f1)
+ f0f2_2 := int64(f0_2) * int64(f2)
+ f0f3_2 := int64(f0_2) * int64(f3)
+ f0f4_2 := int64(f0_2) * int64(f4)
+ f0f5_2 := int64(f0_2) * int64(f5)
+ f0f6_2 := int64(f0_2) * int64(f6)
+ f0f7_2 := int64(f0_2) * int64(f7)
+ f0f8_2 := int64(f0_2) * int64(f8)
+ f0f9_2 := int64(f0_2) * int64(f9)
+ f1f1_2 := int64(f1_2) * int64(f1)
+ f1f2_2 := int64(f1_2) * int64(f2)
+ f1f3_4 := int64(f1_2) * int64(f3_2)
+ f1f4_2 := int64(f1_2) * int64(f4)
+ f1f5_4 := int64(f1_2) * int64(f5_2)
+ f1f6_2 := int64(f1_2) * int64(f6)
+ f1f7_4 := int64(f1_2) * int64(f7_2)
+ f1f8_2 := int64(f1_2) * int64(f8)
+ f1f9_76 := int64(f1_2) * int64(f9_38)
+ f2f2 := int64(f2) * int64(f2)
+ f2f3_2 := int64(f2_2) * int64(f3)
+ f2f4_2 := int64(f2_2) * int64(f4)
+ f2f5_2 := int64(f2_2) * int64(f5)
+ f2f6_2 := int64(f2_2) * int64(f6)
+ f2f7_2 := int64(f2_2) * int64(f7)
+ f2f8_38 := int64(f2_2) * int64(f8_19)
+ f2f9_38 := int64(f2) * int64(f9_38)
+ f3f3_2 := int64(f3_2) * int64(f3)
+ f3f4_2 := int64(f3_2) * int64(f4)
+ f3f5_4 := int64(f3_2) * int64(f5_2)
+ f3f6_2 := int64(f3_2) * int64(f6)
+ f3f7_76 := int64(f3_2) * int64(f7_38)
+ f3f8_38 := int64(f3_2) * int64(f8_19)
+ f3f9_76 := int64(f3_2) * int64(f9_38)
+ f4f4 := int64(f4) * int64(f4)
+ f4f5_2 := int64(f4_2) * int64(f5)
+ f4f6_38 := int64(f4_2) * int64(f6_19)
+ f4f7_38 := int64(f4) * int64(f7_38)
+ f4f8_38 := int64(f4_2) * int64(f8_19)
+ f4f9_38 := int64(f4) * int64(f9_38)
+ f5f5_38 := int64(f5) * int64(f5_38)
+ f5f6_38 := int64(f5_2) * int64(f6_19)
+ f5f7_76 := int64(f5_2) * int64(f7_38)
+ f5f8_38 := int64(f5_2) * int64(f8_19)
+ f5f9_76 := int64(f5_2) * int64(f9_38)
+ f6f6_19 := int64(f6) * int64(f6_19)
+ f6f7_38 := int64(f6) * int64(f7_38)
+ f6f8_38 := int64(f6_2) * int64(f8_19)
+ f6f9_38 := int64(f6) * int64(f9_38)
+ f7f7_38 := int64(f7) * int64(f7_38)
+ f7f8_38 := int64(f7_2) * int64(f8_19)
+ f7f9_76 := int64(f7_2) * int64(f9_38)
+ f8f8_19 := int64(f8) * int64(f8_19)
+ f8f9_38 := int64(f8) * int64(f9_38)
+ f9f9_38 := int64(f9) * int64(f9_38)
+ h0 := f0f0 + f1f9_76 + f2f8_38 + f3f7_76 + f4f6_38 + f5f5_38
+ h1 := f0f1_2 + f2f9_38 + f3f8_38 + f4f7_38 + f5f6_38
+ h2 := f0f2_2 + f1f1_2 + f3f9_76 + f4f8_38 + f5f7_76 + f6f6_19
+ h3 := f0f3_2 + f1f2_2 + f4f9_38 + f5f8_38 + f6f7_38
+ h4 := f0f4_2 + f1f3_4 + f2f2 + f5f9_76 + f6f8_38 + f7f7_38
+ h5 := f0f5_2 + f1f4_2 + f2f3_2 + f6f9_38 + f7f8_38
+ h6 := f0f6_2 + f1f5_4 + f2f4_2 + f3f3_2 + f7f9_76 + f8f8_19
+ h7 := f0f7_2 + f1f6_2 + f2f5_2 + f3f4_2 + f8f9_38
+ h8 := f0f8_2 + f1f7_4 + f2f6_2 + f3f5_4 + f4f4 + f9f9_38
+ h9 := f0f9_2 + f1f8_2 + f2f7_2 + f3f6_2 + f4f5_2
+ var carry [10]int64
+
+ carry[0] = (h0 + (1 << 25)) >> 26
+ h1 += carry[0]
+ h0 -= carry[0] << 26
+ carry[4] = (h4 + (1 << 25)) >> 26
+ h5 += carry[4]
+ h4 -= carry[4] << 26
+
+ carry[1] = (h1 + (1 << 24)) >> 25
+ h2 += carry[1]
+ h1 -= carry[1] << 25
+ carry[5] = (h5 + (1 << 24)) >> 25
+ h6 += carry[5]
+ h5 -= carry[5] << 25
+
+ carry[2] = (h2 + (1 << 25)) >> 26
+ h3 += carry[2]
+ h2 -= carry[2] << 26
+ carry[6] = (h6 + (1 << 25)) >> 26
+ h7 += carry[6]
+ h6 -= carry[6] << 26
+
+ carry[3] = (h3 + (1 << 24)) >> 25
+ h4 += carry[3]
+ h3 -= carry[3] << 25
+ carry[7] = (h7 + (1 << 24)) >> 25
+ h8 += carry[7]
+ h7 -= carry[7] << 25
+
+ carry[4] = (h4 + (1 << 25)) >> 26
+ h5 += carry[4]
+ h4 -= carry[4] << 26
+ carry[8] = (h8 + (1 << 25)) >> 26
+ h9 += carry[8]
+ h8 -= carry[8] << 26
+
+ carry[9] = (h9 + (1 << 24)) >> 25
+ h0 += carry[9] * 19
+ h9 -= carry[9] << 25
+
+ carry[0] = (h0 + (1 << 25)) >> 26
+ h1 += carry[0]
+ h0 -= carry[0] << 26
+
+ h[0] = int32(h0)
+ h[1] = int32(h1)
+ h[2] = int32(h2)
+ h[3] = int32(h3)
+ h[4] = int32(h4)
+ h[5] = int32(h5)
+ h[6] = int32(h6)
+ h[7] = int32(h7)
+ h[8] = int32(h8)
+ h[9] = int32(h9)
+}
+
+// feMul121666 calculates h = f * 121666. Can overlap h with f.
+//
+// Preconditions:
+// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+//
+// Postconditions:
+// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+func feMul121666(h, f *fieldElement) {
+ h0 := int64(f[0]) * 121666
+ h1 := int64(f[1]) * 121666
+ h2 := int64(f[2]) * 121666
+ h3 := int64(f[3]) * 121666
+ h4 := int64(f[4]) * 121666
+ h5 := int64(f[5]) * 121666
+ h6 := int64(f[6]) * 121666
+ h7 := int64(f[7]) * 121666
+ h8 := int64(f[8]) * 121666
+ h9 := int64(f[9]) * 121666
+ var carry [10]int64
+
+ carry[9] = (h9 + (1 << 24)) >> 25
+ h0 += carry[9] * 19
+ h9 -= carry[9] << 25
+ carry[1] = (h1 + (1 << 24)) >> 25
+ h2 += carry[1]
+ h1 -= carry[1] << 25
+ carry[3] = (h3 + (1 << 24)) >> 25
+ h4 += carry[3]
+ h3 -= carry[3] << 25
+ carry[5] = (h5 + (1 << 24)) >> 25
+ h6 += carry[5]
+ h5 -= carry[5] << 25
+ carry[7] = (h7 + (1 << 24)) >> 25
+ h8 += carry[7]
+ h7 -= carry[7] << 25
+
+ carry[0] = (h0 + (1 << 25)) >> 26
+ h1 += carry[0]
+ h0 -= carry[0] << 26
+ carry[2] = (h2 + (1 << 25)) >> 26
+ h3 += carry[2]
+ h2 -= carry[2] << 26
+ carry[4] = (h4 + (1 << 25)) >> 26
+ h5 += carry[4]
+ h4 -= carry[4] << 26
+ carry[6] = (h6 + (1 << 25)) >> 26
+ h7 += carry[6]
+ h6 -= carry[6] << 26
+ carry[8] = (h8 + (1 << 25)) >> 26
+ h9 += carry[8]
+ h8 -= carry[8] << 26
+
+ h[0] = int32(h0)
+ h[1] = int32(h1)
+ h[2] = int32(h2)
+ h[3] = int32(h3)
+ h[4] = int32(h4)
+ h[5] = int32(h5)
+ h[6] = int32(h6)
+ h[7] = int32(h7)
+ h[8] = int32(h8)
+ h[9] = int32(h9)
+}
+
+// feInvert sets out = z^-1.
+func feInvert(out, z *fieldElement) {
+ var t0, t1, t2, t3 fieldElement
+ var i int
+
+ feSquare(&t0, z)
+ for i = 1; i < 1; i++ {
+ feSquare(&t0, &t0)
+ }
+ feSquare(&t1, &t0)
+ for i = 1; i < 2; i++ {
+ feSquare(&t1, &t1)
+ }
+ feMul(&t1, z, &t1)
+ feMul(&t0, &t0, &t1)
+ feSquare(&t2, &t0)
+ for i = 1; i < 1; i++ {
+ feSquare(&t2, &t2)
+ }
+ feMul(&t1, &t1, &t2)
+ feSquare(&t2, &t1)
+ for i = 1; i < 5; i++ {
+ feSquare(&t2, &t2)
+ }
+ feMul(&t1, &t2, &t1)
+ feSquare(&t2, &t1)
+ for i = 1; i < 10; i++ {
+ feSquare(&t2, &t2)
+ }
+ feMul(&t2, &t2, &t1)
+ feSquare(&t3, &t2)
+ for i = 1; i < 20; i++ {
+ feSquare(&t3, &t3)
+ }
+ feMul(&t2, &t3, &t2)
+ feSquare(&t2, &t2)
+ for i = 1; i < 10; i++ {
+ feSquare(&t2, &t2)
+ }
+ feMul(&t1, &t2, &t1)
+ feSquare(&t2, &t1)
+ for i = 1; i < 50; i++ {
+ feSquare(&t2, &t2)
+ }
+ feMul(&t2, &t2, &t1)
+ feSquare(&t3, &t2)
+ for i = 1; i < 100; i++ {
+ feSquare(&t3, &t3)
+ }
+ feMul(&t2, &t3, &t2)
+ feSquare(&t2, &t2)
+ for i = 1; i < 50; i++ {
+ feSquare(&t2, &t2)
+ }
+ feMul(&t1, &t2, &t1)
+ feSquare(&t1, &t1)
+ for i = 1; i < 5; i++ {
+ feSquare(&t1, &t1)
+ }
+ feMul(out, &t1, &t0)
+}
+
+func scalarMult(out, in, base *[32]byte) {
+ var e [32]byte
+
+ copy(e[:], in[:])
+ e[0] &= 248
+ e[31] &= 127
+ e[31] |= 64
+
+ var x1, x2, z2, x3, z3, tmp0, tmp1 fieldElement
+ feFromBytes(&x1, base)
+ feOne(&x2)
+ feCopy(&x3, &x1)
+ feOne(&z3)
+
+ swap := int32(0)
+ for pos := 254; pos >= 0; pos-- {
+ b := e[pos/8] >> uint(pos&7)
+ b &= 1
+ swap ^= int32(b)
+ feCSwap(&x2, &x3, swap)
+ feCSwap(&z2, &z3, swap)
+ swap = int32(b)
+
+ feSub(&tmp0, &x3, &z3)
+ feSub(&tmp1, &x2, &z2)
+ feAdd(&x2, &x2, &z2)
+ feAdd(&z2, &x3, &z3)
+ feMul(&z3, &tmp0, &x2)
+ feMul(&z2, &z2, &tmp1)
+ feSquare(&tmp0, &tmp1)
+ feSquare(&tmp1, &x2)
+ feAdd(&x3, &z3, &z2)
+ feSub(&z2, &z3, &z2)
+ feMul(&x2, &tmp1, &tmp0)
+ feSub(&tmp1, &tmp1, &tmp0)
+ feSquare(&z2, &z2)
+ feMul121666(&z3, &tmp1)
+ feSquare(&x3, &x3)
+ feAdd(&tmp0, &tmp0, &z3)
+ feMul(&z3, &x1, &z2)
+ feMul(&z2, &tmp1, &tmp0)
+ }
+
+ feCSwap(&x2, &x3, swap)
+ feCSwap(&z2, &z3, swap)
+
+ feInvert(&z2, &z2)
+ feMul(&x2, &x2, &z2)
+ feToBytes(out, &x2)
+}
diff --git a/vendor/golang.org/x/crypto/curve25519/doc.go b/vendor/golang.org/x/crypto/curve25519/doc.go
new file mode 100644
index 00000000..da9b10d9
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/doc.go
@@ -0,0 +1,23 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package curve25519 provides an implementation of scalar multiplication on
+// the elliptic curve known as curve25519. See https://cr.yp.to/ecdh.html
+package curve25519 // import "golang.org/x/crypto/curve25519"
+
+// basePoint is the x coordinate of the generator of the curve.
+var basePoint = [32]byte{9, 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}
+
+// ScalarMult sets dst to the product in*base where dst and base are the x
+// coordinates of group points and all values are in little-endian form.
+func ScalarMult(dst, in, base *[32]byte) {
+ scalarMult(dst, in, base)
+}
+
+// ScalarBaseMult sets dst to the product in*base where dst and base are the x
+// coordinates of group points, base is the standard generator and all values
+// are in little-endian form.
+func ScalarBaseMult(dst, in *[32]byte) {
+ ScalarMult(dst, in, &basePoint)
+}
diff --git a/vendor/golang.org/x/crypto/curve25519/freeze_amd64.s b/vendor/golang.org/x/crypto/curve25519/freeze_amd64.s
new file mode 100644
index 00000000..39081610
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/freeze_amd64.s
@@ -0,0 +1,73 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+// +build amd64,!gccgo,!appengine
+
+#include "const_amd64.h"
+
+// func freeze(inout *[5]uint64)
+TEXT ·freeze(SB),7,$0-8
+ MOVQ inout+0(FP), DI
+
+ MOVQ 0(DI),SI
+ MOVQ 8(DI),DX
+ MOVQ 16(DI),CX
+ MOVQ 24(DI),R8
+ MOVQ 32(DI),R9
+ MOVQ $REDMASK51,AX
+ MOVQ AX,R10
+ SUBQ $18,R10
+ MOVQ $3,R11
+REDUCELOOP:
+ MOVQ SI,R12
+ SHRQ $51,R12
+ ANDQ AX,SI
+ ADDQ R12,DX
+ MOVQ DX,R12
+ SHRQ $51,R12
+ ANDQ AX,DX
+ ADDQ R12,CX
+ MOVQ CX,R12
+ SHRQ $51,R12
+ ANDQ AX,CX
+ ADDQ R12,R8
+ MOVQ R8,R12
+ SHRQ $51,R12
+ ANDQ AX,R8
+ ADDQ R12,R9
+ MOVQ R9,R12
+ SHRQ $51,R12
+ ANDQ AX,R9
+ IMUL3Q $19,R12,R12
+ ADDQ R12,SI
+ SUBQ $1,R11
+ JA REDUCELOOP
+ MOVQ $1,R12
+ CMPQ R10,SI
+ CMOVQLT R11,R12
+ CMPQ AX,DX
+ CMOVQNE R11,R12
+ CMPQ AX,CX
+ CMOVQNE R11,R12
+ CMPQ AX,R8
+ CMOVQNE R11,R12
+ CMPQ AX,R9
+ CMOVQNE R11,R12
+ NEGQ R12
+ ANDQ R12,AX
+ ANDQ R12,R10
+ SUBQ R10,SI
+ SUBQ AX,DX
+ SUBQ AX,CX
+ SUBQ AX,R8
+ SUBQ AX,R9
+ MOVQ SI,0(DI)
+ MOVQ DX,8(DI)
+ MOVQ CX,16(DI)
+ MOVQ R8,24(DI)
+ MOVQ R9,32(DI)
+ RET
diff --git a/vendor/golang.org/x/crypto/curve25519/ladderstep_amd64.s b/vendor/golang.org/x/crypto/curve25519/ladderstep_amd64.s
new file mode 100644
index 00000000..9e9040b2
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/ladderstep_amd64.s
@@ -0,0 +1,1377 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+// +build amd64,!gccgo,!appengine
+
+#include "const_amd64.h"
+
+// func ladderstep(inout *[5][5]uint64)
+TEXT ·ladderstep(SB),0,$296-8
+ MOVQ inout+0(FP),DI
+
+ MOVQ 40(DI),SI
+ MOVQ 48(DI),DX
+ MOVQ 56(DI),CX
+ MOVQ 64(DI),R8
+ MOVQ 72(DI),R9
+ MOVQ SI,AX
+ MOVQ DX,R10
+ MOVQ CX,R11
+ MOVQ R8,R12
+ MOVQ R9,R13
+ ADDQ ·_2P0(SB),AX
+ ADDQ ·_2P1234(SB),R10
+ ADDQ ·_2P1234(SB),R11
+ ADDQ ·_2P1234(SB),R12
+ ADDQ ·_2P1234(SB),R13
+ ADDQ 80(DI),SI
+ ADDQ 88(DI),DX
+ ADDQ 96(DI),CX
+ ADDQ 104(DI),R8
+ ADDQ 112(DI),R9
+ SUBQ 80(DI),AX
+ SUBQ 88(DI),R10
+ SUBQ 96(DI),R11
+ SUBQ 104(DI),R12
+ SUBQ 112(DI),R13
+ MOVQ SI,0(SP)
+ MOVQ DX,8(SP)
+ MOVQ CX,16(SP)
+ MOVQ R8,24(SP)
+ MOVQ R9,32(SP)
+ MOVQ AX,40(SP)
+ MOVQ R10,48(SP)
+ MOVQ R11,56(SP)
+ MOVQ R12,64(SP)
+ MOVQ R13,72(SP)
+ MOVQ 40(SP),AX
+ MULQ 40(SP)
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 40(SP),AX
+ SHLQ $1,AX
+ MULQ 48(SP)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 40(SP),AX
+ SHLQ $1,AX
+ MULQ 56(SP)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 40(SP),AX
+ SHLQ $1,AX
+ MULQ 64(SP)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 40(SP),AX
+ SHLQ $1,AX
+ MULQ 72(SP)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 48(SP),AX
+ MULQ 48(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 48(SP),AX
+ SHLQ $1,AX
+ MULQ 56(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 48(SP),AX
+ SHLQ $1,AX
+ MULQ 64(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 48(SP),DX
+ IMUL3Q $38,DX,AX
+ MULQ 72(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 56(SP),AX
+ MULQ 56(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 56(SP),DX
+ IMUL3Q $38,DX,AX
+ MULQ 64(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 56(SP),DX
+ IMUL3Q $38,DX,AX
+ MULQ 72(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 64(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 64(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 64(SP),DX
+ IMUL3Q $38,DX,AX
+ MULQ 72(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 72(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 72(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ $REDMASK51,DX
+ SHLQ $13,CX:SI
+ ANDQ DX,SI
+ SHLQ $13,R9:R8
+ ANDQ DX,R8
+ ADDQ CX,R8
+ SHLQ $13,R11:R10
+ ANDQ DX,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ DX,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ DX,R14
+ ADDQ R13,R14
+ IMUL3Q $19,R15,CX
+ ADDQ CX,SI
+ MOVQ SI,CX
+ SHRQ $51,CX
+ ADDQ R8,CX
+ ANDQ DX,SI
+ MOVQ CX,R8
+ SHRQ $51,CX
+ ADDQ R10,CX
+ ANDQ DX,R8
+ MOVQ CX,R9
+ SHRQ $51,CX
+ ADDQ R12,CX
+ ANDQ DX,R9
+ MOVQ CX,AX
+ SHRQ $51,CX
+ ADDQ R14,CX
+ ANDQ DX,AX
+ MOVQ CX,R10
+ SHRQ $51,CX
+ IMUL3Q $19,CX,CX
+ ADDQ CX,SI
+ ANDQ DX,R10
+ MOVQ SI,80(SP)
+ MOVQ R8,88(SP)
+ MOVQ R9,96(SP)
+ MOVQ AX,104(SP)
+ MOVQ R10,112(SP)
+ MOVQ 0(SP),AX
+ MULQ 0(SP)
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 0(SP),AX
+ SHLQ $1,AX
+ MULQ 8(SP)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 0(SP),AX
+ SHLQ $1,AX
+ MULQ 16(SP)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 0(SP),AX
+ SHLQ $1,AX
+ MULQ 24(SP)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 0(SP),AX
+ SHLQ $1,AX
+ MULQ 32(SP)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 8(SP),AX
+ MULQ 8(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 8(SP),AX
+ SHLQ $1,AX
+ MULQ 16(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 8(SP),AX
+ SHLQ $1,AX
+ MULQ 24(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 8(SP),DX
+ IMUL3Q $38,DX,AX
+ MULQ 32(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 16(SP),AX
+ MULQ 16(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 16(SP),DX
+ IMUL3Q $38,DX,AX
+ MULQ 24(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 16(SP),DX
+ IMUL3Q $38,DX,AX
+ MULQ 32(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 24(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 24(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 24(SP),DX
+ IMUL3Q $38,DX,AX
+ MULQ 32(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 32(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 32(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ $REDMASK51,DX
+ SHLQ $13,CX:SI
+ ANDQ DX,SI
+ SHLQ $13,R9:R8
+ ANDQ DX,R8
+ ADDQ CX,R8
+ SHLQ $13,R11:R10
+ ANDQ DX,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ DX,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ DX,R14
+ ADDQ R13,R14
+ IMUL3Q $19,R15,CX
+ ADDQ CX,SI
+ MOVQ SI,CX
+ SHRQ $51,CX
+ ADDQ R8,CX
+ ANDQ DX,SI
+ MOVQ CX,R8
+ SHRQ $51,CX
+ ADDQ R10,CX
+ ANDQ DX,R8
+ MOVQ CX,R9
+ SHRQ $51,CX
+ ADDQ R12,CX
+ ANDQ DX,R9
+ MOVQ CX,AX
+ SHRQ $51,CX
+ ADDQ R14,CX
+ ANDQ DX,AX
+ MOVQ CX,R10
+ SHRQ $51,CX
+ IMUL3Q $19,CX,CX
+ ADDQ CX,SI
+ ANDQ DX,R10
+ MOVQ SI,120(SP)
+ MOVQ R8,128(SP)
+ MOVQ R9,136(SP)
+ MOVQ AX,144(SP)
+ MOVQ R10,152(SP)
+ MOVQ SI,SI
+ MOVQ R8,DX
+ MOVQ R9,CX
+ MOVQ AX,R8
+ MOVQ R10,R9
+ ADDQ ·_2P0(SB),SI
+ ADDQ ·_2P1234(SB),DX
+ ADDQ ·_2P1234(SB),CX
+ ADDQ ·_2P1234(SB),R8
+ ADDQ ·_2P1234(SB),R9
+ SUBQ 80(SP),SI
+ SUBQ 88(SP),DX
+ SUBQ 96(SP),CX
+ SUBQ 104(SP),R8
+ SUBQ 112(SP),R9
+ MOVQ SI,160(SP)
+ MOVQ DX,168(SP)
+ MOVQ CX,176(SP)
+ MOVQ R8,184(SP)
+ MOVQ R9,192(SP)
+ MOVQ 120(DI),SI
+ MOVQ 128(DI),DX
+ MOVQ 136(DI),CX
+ MOVQ 144(DI),R8
+ MOVQ 152(DI),R9
+ MOVQ SI,AX
+ MOVQ DX,R10
+ MOVQ CX,R11
+ MOVQ R8,R12
+ MOVQ R9,R13
+ ADDQ ·_2P0(SB),AX
+ ADDQ ·_2P1234(SB),R10
+ ADDQ ·_2P1234(SB),R11
+ ADDQ ·_2P1234(SB),R12
+ ADDQ ·_2P1234(SB),R13
+ ADDQ 160(DI),SI
+ ADDQ 168(DI),DX
+ ADDQ 176(DI),CX
+ ADDQ 184(DI),R8
+ ADDQ 192(DI),R9
+ SUBQ 160(DI),AX
+ SUBQ 168(DI),R10
+ SUBQ 176(DI),R11
+ SUBQ 184(DI),R12
+ SUBQ 192(DI),R13
+ MOVQ SI,200(SP)
+ MOVQ DX,208(SP)
+ MOVQ CX,216(SP)
+ MOVQ R8,224(SP)
+ MOVQ R9,232(SP)
+ MOVQ AX,240(SP)
+ MOVQ R10,248(SP)
+ MOVQ R11,256(SP)
+ MOVQ R12,264(SP)
+ MOVQ R13,272(SP)
+ MOVQ 224(SP),SI
+ IMUL3Q $19,SI,AX
+ MOVQ AX,280(SP)
+ MULQ 56(SP)
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 232(SP),DX
+ IMUL3Q $19,DX,AX
+ MOVQ AX,288(SP)
+ MULQ 48(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 200(SP),AX
+ MULQ 40(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 200(SP),AX
+ MULQ 48(SP)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 200(SP),AX
+ MULQ 56(SP)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 200(SP),AX
+ MULQ 64(SP)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 200(SP),AX
+ MULQ 72(SP)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 208(SP),AX
+ MULQ 40(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 208(SP),AX
+ MULQ 48(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 208(SP),AX
+ MULQ 56(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 208(SP),AX
+ MULQ 64(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 208(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 72(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 216(SP),AX
+ MULQ 40(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 216(SP),AX
+ MULQ 48(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 216(SP),AX
+ MULQ 56(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 216(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 64(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 216(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 72(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 224(SP),AX
+ MULQ 40(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 224(SP),AX
+ MULQ 48(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 280(SP),AX
+ MULQ 64(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 280(SP),AX
+ MULQ 72(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 232(SP),AX
+ MULQ 40(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 288(SP),AX
+ MULQ 56(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 288(SP),AX
+ MULQ 64(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 288(SP),AX
+ MULQ 72(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ $REDMASK51,DX
+ SHLQ $13,CX:SI
+ ANDQ DX,SI
+ SHLQ $13,R9:R8
+ ANDQ DX,R8
+ ADDQ CX,R8
+ SHLQ $13,R11:R10
+ ANDQ DX,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ DX,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ DX,R14
+ ADDQ R13,R14
+ IMUL3Q $19,R15,CX
+ ADDQ CX,SI
+ MOVQ SI,CX
+ SHRQ $51,CX
+ ADDQ R8,CX
+ MOVQ CX,R8
+ SHRQ $51,CX
+ ANDQ DX,SI
+ ADDQ R10,CX
+ MOVQ CX,R9
+ SHRQ $51,CX
+ ANDQ DX,R8
+ ADDQ R12,CX
+ MOVQ CX,AX
+ SHRQ $51,CX
+ ANDQ DX,R9
+ ADDQ R14,CX
+ MOVQ CX,R10
+ SHRQ $51,CX
+ ANDQ DX,AX
+ IMUL3Q $19,CX,CX
+ ADDQ CX,SI
+ ANDQ DX,R10
+ MOVQ SI,40(SP)
+ MOVQ R8,48(SP)
+ MOVQ R9,56(SP)
+ MOVQ AX,64(SP)
+ MOVQ R10,72(SP)
+ MOVQ 264(SP),SI
+ IMUL3Q $19,SI,AX
+ MOVQ AX,200(SP)
+ MULQ 16(SP)
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 272(SP),DX
+ IMUL3Q $19,DX,AX
+ MOVQ AX,208(SP)
+ MULQ 8(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 240(SP),AX
+ MULQ 0(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 240(SP),AX
+ MULQ 8(SP)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 240(SP),AX
+ MULQ 16(SP)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 240(SP),AX
+ MULQ 24(SP)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 240(SP),AX
+ MULQ 32(SP)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 248(SP),AX
+ MULQ 0(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 248(SP),AX
+ MULQ 8(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 248(SP),AX
+ MULQ 16(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 248(SP),AX
+ MULQ 24(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 248(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 32(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 256(SP),AX
+ MULQ 0(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 256(SP),AX
+ MULQ 8(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 256(SP),AX
+ MULQ 16(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 256(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 24(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 256(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 32(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 264(SP),AX
+ MULQ 0(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 264(SP),AX
+ MULQ 8(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 200(SP),AX
+ MULQ 24(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 200(SP),AX
+ MULQ 32(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 272(SP),AX
+ MULQ 0(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 208(SP),AX
+ MULQ 16(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 208(SP),AX
+ MULQ 24(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 208(SP),AX
+ MULQ 32(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ $REDMASK51,DX
+ SHLQ $13,CX:SI
+ ANDQ DX,SI
+ SHLQ $13,R9:R8
+ ANDQ DX,R8
+ ADDQ CX,R8
+ SHLQ $13,R11:R10
+ ANDQ DX,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ DX,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ DX,R14
+ ADDQ R13,R14
+ IMUL3Q $19,R15,CX
+ ADDQ CX,SI
+ MOVQ SI,CX
+ SHRQ $51,CX
+ ADDQ R8,CX
+ MOVQ CX,R8
+ SHRQ $51,CX
+ ANDQ DX,SI
+ ADDQ R10,CX
+ MOVQ CX,R9
+ SHRQ $51,CX
+ ANDQ DX,R8
+ ADDQ R12,CX
+ MOVQ CX,AX
+ SHRQ $51,CX
+ ANDQ DX,R9
+ ADDQ R14,CX
+ MOVQ CX,R10
+ SHRQ $51,CX
+ ANDQ DX,AX
+ IMUL3Q $19,CX,CX
+ ADDQ CX,SI
+ ANDQ DX,R10
+ MOVQ SI,DX
+ MOVQ R8,CX
+ MOVQ R9,R11
+ MOVQ AX,R12
+ MOVQ R10,R13
+ ADDQ ·_2P0(SB),DX
+ ADDQ ·_2P1234(SB),CX
+ ADDQ ·_2P1234(SB),R11
+ ADDQ ·_2P1234(SB),R12
+ ADDQ ·_2P1234(SB),R13
+ ADDQ 40(SP),SI
+ ADDQ 48(SP),R8
+ ADDQ 56(SP),R9
+ ADDQ 64(SP),AX
+ ADDQ 72(SP),R10
+ SUBQ 40(SP),DX
+ SUBQ 48(SP),CX
+ SUBQ 56(SP),R11
+ SUBQ 64(SP),R12
+ SUBQ 72(SP),R13
+ MOVQ SI,120(DI)
+ MOVQ R8,128(DI)
+ MOVQ R9,136(DI)
+ MOVQ AX,144(DI)
+ MOVQ R10,152(DI)
+ MOVQ DX,160(DI)
+ MOVQ CX,168(DI)
+ MOVQ R11,176(DI)
+ MOVQ R12,184(DI)
+ MOVQ R13,192(DI)
+ MOVQ 120(DI),AX
+ MULQ 120(DI)
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 120(DI),AX
+ SHLQ $1,AX
+ MULQ 128(DI)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 120(DI),AX
+ SHLQ $1,AX
+ MULQ 136(DI)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 120(DI),AX
+ SHLQ $1,AX
+ MULQ 144(DI)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 120(DI),AX
+ SHLQ $1,AX
+ MULQ 152(DI)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 128(DI),AX
+ MULQ 128(DI)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 128(DI),AX
+ SHLQ $1,AX
+ MULQ 136(DI)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 128(DI),AX
+ SHLQ $1,AX
+ MULQ 144(DI)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 128(DI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 152(DI)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 136(DI),AX
+ MULQ 136(DI)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 136(DI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 144(DI)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 136(DI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 152(DI)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 144(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 144(DI)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 144(DI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 152(DI)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 152(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 152(DI)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ $REDMASK51,DX
+ SHLQ $13,CX:SI
+ ANDQ DX,SI
+ SHLQ $13,R9:R8
+ ANDQ DX,R8
+ ADDQ CX,R8
+ SHLQ $13,R11:R10
+ ANDQ DX,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ DX,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ DX,R14
+ ADDQ R13,R14
+ IMUL3Q $19,R15,CX
+ ADDQ CX,SI
+ MOVQ SI,CX
+ SHRQ $51,CX
+ ADDQ R8,CX
+ ANDQ DX,SI
+ MOVQ CX,R8
+ SHRQ $51,CX
+ ADDQ R10,CX
+ ANDQ DX,R8
+ MOVQ CX,R9
+ SHRQ $51,CX
+ ADDQ R12,CX
+ ANDQ DX,R9
+ MOVQ CX,AX
+ SHRQ $51,CX
+ ADDQ R14,CX
+ ANDQ DX,AX
+ MOVQ CX,R10
+ SHRQ $51,CX
+ IMUL3Q $19,CX,CX
+ ADDQ CX,SI
+ ANDQ DX,R10
+ MOVQ SI,120(DI)
+ MOVQ R8,128(DI)
+ MOVQ R9,136(DI)
+ MOVQ AX,144(DI)
+ MOVQ R10,152(DI)
+ MOVQ 160(DI),AX
+ MULQ 160(DI)
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 160(DI),AX
+ SHLQ $1,AX
+ MULQ 168(DI)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 160(DI),AX
+ SHLQ $1,AX
+ MULQ 176(DI)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 160(DI),AX
+ SHLQ $1,AX
+ MULQ 184(DI)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 160(DI),AX
+ SHLQ $1,AX
+ MULQ 192(DI)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 168(DI),AX
+ MULQ 168(DI)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 168(DI),AX
+ SHLQ $1,AX
+ MULQ 176(DI)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 168(DI),AX
+ SHLQ $1,AX
+ MULQ 184(DI)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 168(DI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 192(DI)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 176(DI),AX
+ MULQ 176(DI)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 176(DI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 184(DI)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 176(DI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 192(DI)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 184(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 184(DI)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 184(DI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 192(DI)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 192(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 192(DI)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ $REDMASK51,DX
+ SHLQ $13,CX:SI
+ ANDQ DX,SI
+ SHLQ $13,R9:R8
+ ANDQ DX,R8
+ ADDQ CX,R8
+ SHLQ $13,R11:R10
+ ANDQ DX,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ DX,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ DX,R14
+ ADDQ R13,R14
+ IMUL3Q $19,R15,CX
+ ADDQ CX,SI
+ MOVQ SI,CX
+ SHRQ $51,CX
+ ADDQ R8,CX
+ ANDQ DX,SI
+ MOVQ CX,R8
+ SHRQ $51,CX
+ ADDQ R10,CX
+ ANDQ DX,R8
+ MOVQ CX,R9
+ SHRQ $51,CX
+ ADDQ R12,CX
+ ANDQ DX,R9
+ MOVQ CX,AX
+ SHRQ $51,CX
+ ADDQ R14,CX
+ ANDQ DX,AX
+ MOVQ CX,R10
+ SHRQ $51,CX
+ IMUL3Q $19,CX,CX
+ ADDQ CX,SI
+ ANDQ DX,R10
+ MOVQ SI,160(DI)
+ MOVQ R8,168(DI)
+ MOVQ R9,176(DI)
+ MOVQ AX,184(DI)
+ MOVQ R10,192(DI)
+ MOVQ 184(DI),SI
+ IMUL3Q $19,SI,AX
+ MOVQ AX,0(SP)
+ MULQ 16(DI)
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 192(DI),DX
+ IMUL3Q $19,DX,AX
+ MOVQ AX,8(SP)
+ MULQ 8(DI)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 160(DI),AX
+ MULQ 0(DI)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 160(DI),AX
+ MULQ 8(DI)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 160(DI),AX
+ MULQ 16(DI)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 160(DI),AX
+ MULQ 24(DI)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 160(DI),AX
+ MULQ 32(DI)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 168(DI),AX
+ MULQ 0(DI)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 168(DI),AX
+ MULQ 8(DI)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 168(DI),AX
+ MULQ 16(DI)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 168(DI),AX
+ MULQ 24(DI)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 168(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 32(DI)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 176(DI),AX
+ MULQ 0(DI)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 176(DI),AX
+ MULQ 8(DI)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 176(DI),AX
+ MULQ 16(DI)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 176(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 24(DI)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 176(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 32(DI)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 184(DI),AX
+ MULQ 0(DI)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 184(DI),AX
+ MULQ 8(DI)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 0(SP),AX
+ MULQ 24(DI)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 0(SP),AX
+ MULQ 32(DI)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 192(DI),AX
+ MULQ 0(DI)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 8(SP),AX
+ MULQ 16(DI)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 8(SP),AX
+ MULQ 24(DI)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 8(SP),AX
+ MULQ 32(DI)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ $REDMASK51,DX
+ SHLQ $13,CX:SI
+ ANDQ DX,SI
+ SHLQ $13,R9:R8
+ ANDQ DX,R8
+ ADDQ CX,R8
+ SHLQ $13,R11:R10
+ ANDQ DX,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ DX,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ DX,R14
+ ADDQ R13,R14
+ IMUL3Q $19,R15,CX
+ ADDQ CX,SI
+ MOVQ SI,CX
+ SHRQ $51,CX
+ ADDQ R8,CX
+ MOVQ CX,R8
+ SHRQ $51,CX
+ ANDQ DX,SI
+ ADDQ R10,CX
+ MOVQ CX,R9
+ SHRQ $51,CX
+ ANDQ DX,R8
+ ADDQ R12,CX
+ MOVQ CX,AX
+ SHRQ $51,CX
+ ANDQ DX,R9
+ ADDQ R14,CX
+ MOVQ CX,R10
+ SHRQ $51,CX
+ ANDQ DX,AX
+ IMUL3Q $19,CX,CX
+ ADDQ CX,SI
+ ANDQ DX,R10
+ MOVQ SI,160(DI)
+ MOVQ R8,168(DI)
+ MOVQ R9,176(DI)
+ MOVQ AX,184(DI)
+ MOVQ R10,192(DI)
+ MOVQ 144(SP),SI
+ IMUL3Q $19,SI,AX
+ MOVQ AX,0(SP)
+ MULQ 96(SP)
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 152(SP),DX
+ IMUL3Q $19,DX,AX
+ MOVQ AX,8(SP)
+ MULQ 88(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 120(SP),AX
+ MULQ 80(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 120(SP),AX
+ MULQ 88(SP)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 120(SP),AX
+ MULQ 96(SP)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 120(SP),AX
+ MULQ 104(SP)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 120(SP),AX
+ MULQ 112(SP)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 128(SP),AX
+ MULQ 80(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 128(SP),AX
+ MULQ 88(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 128(SP),AX
+ MULQ 96(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 128(SP),AX
+ MULQ 104(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 128(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 112(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 136(SP),AX
+ MULQ 80(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 136(SP),AX
+ MULQ 88(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 136(SP),AX
+ MULQ 96(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 136(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 104(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 136(SP),DX
+ IMUL3Q $19,DX,AX
+ MULQ 112(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 144(SP),AX
+ MULQ 80(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 144(SP),AX
+ MULQ 88(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 0(SP),AX
+ MULQ 104(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 0(SP),AX
+ MULQ 112(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 152(SP),AX
+ MULQ 80(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 8(SP),AX
+ MULQ 96(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 8(SP),AX
+ MULQ 104(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 8(SP),AX
+ MULQ 112(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ $REDMASK51,DX
+ SHLQ $13,CX:SI
+ ANDQ DX,SI
+ SHLQ $13,R9:R8
+ ANDQ DX,R8
+ ADDQ CX,R8
+ SHLQ $13,R11:R10
+ ANDQ DX,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ DX,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ DX,R14
+ ADDQ R13,R14
+ IMUL3Q $19,R15,CX
+ ADDQ CX,SI
+ MOVQ SI,CX
+ SHRQ $51,CX
+ ADDQ R8,CX
+ MOVQ CX,R8
+ SHRQ $51,CX
+ ANDQ DX,SI
+ ADDQ R10,CX
+ MOVQ CX,R9
+ SHRQ $51,CX
+ ANDQ DX,R8
+ ADDQ R12,CX
+ MOVQ CX,AX
+ SHRQ $51,CX
+ ANDQ DX,R9
+ ADDQ R14,CX
+ MOVQ CX,R10
+ SHRQ $51,CX
+ ANDQ DX,AX
+ IMUL3Q $19,CX,CX
+ ADDQ CX,SI
+ ANDQ DX,R10
+ MOVQ SI,40(DI)
+ MOVQ R8,48(DI)
+ MOVQ R9,56(DI)
+ MOVQ AX,64(DI)
+ MOVQ R10,72(DI)
+ MOVQ 160(SP),AX
+ MULQ ·_121666_213(SB)
+ SHRQ $13,AX
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 168(SP),AX
+ MULQ ·_121666_213(SB)
+ SHRQ $13,AX
+ ADDQ AX,CX
+ MOVQ DX,R8
+ MOVQ 176(SP),AX
+ MULQ ·_121666_213(SB)
+ SHRQ $13,AX
+ ADDQ AX,R8
+ MOVQ DX,R9
+ MOVQ 184(SP),AX
+ MULQ ·_121666_213(SB)
+ SHRQ $13,AX
+ ADDQ AX,R9
+ MOVQ DX,R10
+ MOVQ 192(SP),AX
+ MULQ ·_121666_213(SB)
+ SHRQ $13,AX
+ ADDQ AX,R10
+ IMUL3Q $19,DX,DX
+ ADDQ DX,SI
+ ADDQ 80(SP),SI
+ ADDQ 88(SP),CX
+ ADDQ 96(SP),R8
+ ADDQ 104(SP),R9
+ ADDQ 112(SP),R10
+ MOVQ SI,80(DI)
+ MOVQ CX,88(DI)
+ MOVQ R8,96(DI)
+ MOVQ R9,104(DI)
+ MOVQ R10,112(DI)
+ MOVQ 104(DI),SI
+ IMUL3Q $19,SI,AX
+ MOVQ AX,0(SP)
+ MULQ 176(SP)
+ MOVQ AX,SI
+ MOVQ DX,CX
+ MOVQ 112(DI),DX
+ IMUL3Q $19,DX,AX
+ MOVQ AX,8(SP)
+ MULQ 168(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 80(DI),AX
+ MULQ 160(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 80(DI),AX
+ MULQ 168(SP)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 80(DI),AX
+ MULQ 176(SP)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 80(DI),AX
+ MULQ 184(SP)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 80(DI),AX
+ MULQ 192(SP)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 88(DI),AX
+ MULQ 160(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 88(DI),AX
+ MULQ 168(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 88(DI),AX
+ MULQ 176(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 88(DI),AX
+ MULQ 184(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 88(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 192(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 96(DI),AX
+ MULQ 160(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 96(DI),AX
+ MULQ 168(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 96(DI),AX
+ MULQ 176(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 96(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 184(SP)
+ ADDQ AX,SI
+ ADCQ DX,CX
+ MOVQ 96(DI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 192(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 104(DI),AX
+ MULQ 160(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 104(DI),AX
+ MULQ 168(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 0(SP),AX
+ MULQ 184(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 0(SP),AX
+ MULQ 192(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 112(DI),AX
+ MULQ 160(SP)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 8(SP),AX
+ MULQ 176(SP)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 8(SP),AX
+ MULQ 184(SP)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 8(SP),AX
+ MULQ 192(SP)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ $REDMASK51,DX
+ SHLQ $13,CX:SI
+ ANDQ DX,SI
+ SHLQ $13,R9:R8
+ ANDQ DX,R8
+ ADDQ CX,R8
+ SHLQ $13,R11:R10
+ ANDQ DX,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ DX,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ DX,R14
+ ADDQ R13,R14
+ IMUL3Q $19,R15,CX
+ ADDQ CX,SI
+ MOVQ SI,CX
+ SHRQ $51,CX
+ ADDQ R8,CX
+ MOVQ CX,R8
+ SHRQ $51,CX
+ ANDQ DX,SI
+ ADDQ R10,CX
+ MOVQ CX,R9
+ SHRQ $51,CX
+ ANDQ DX,R8
+ ADDQ R12,CX
+ MOVQ CX,AX
+ SHRQ $51,CX
+ ANDQ DX,R9
+ ADDQ R14,CX
+ MOVQ CX,R10
+ SHRQ $51,CX
+ ANDQ DX,AX
+ IMUL3Q $19,CX,CX
+ ADDQ CX,SI
+ ANDQ DX,R10
+ MOVQ SI,80(DI)
+ MOVQ R8,88(DI)
+ MOVQ R9,96(DI)
+ MOVQ AX,104(DI)
+ MOVQ R10,112(DI)
+ RET
diff --git a/vendor/golang.org/x/crypto/curve25519/mont25519_amd64.go b/vendor/golang.org/x/crypto/curve25519/mont25519_amd64.go
new file mode 100644
index 00000000..5822bd53
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/mont25519_amd64.go
@@ -0,0 +1,240 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build amd64,!gccgo,!appengine
+
+package curve25519
+
+// These functions are implemented in the .s files. The names of the functions
+// in the rest of the file are also taken from the SUPERCOP sources to help
+// people following along.
+
+//go:noescape
+
+func cswap(inout *[5]uint64, v uint64)
+
+//go:noescape
+
+func ladderstep(inout *[5][5]uint64)
+
+//go:noescape
+
+func freeze(inout *[5]uint64)
+
+//go:noescape
+
+func mul(dest, a, b *[5]uint64)
+
+//go:noescape
+
+func square(out, in *[5]uint64)
+
+// mladder uses a Montgomery ladder to calculate (xr/zr) *= s.
+func mladder(xr, zr *[5]uint64, s *[32]byte) {
+ var work [5][5]uint64
+
+ work[0] = *xr
+ setint(&work[1], 1)
+ setint(&work[2], 0)
+ work[3] = *xr
+ setint(&work[4], 1)
+
+ j := uint(6)
+ var prevbit byte
+
+ for i := 31; i >= 0; i-- {
+ for j < 8 {
+ bit := ((*s)[i] >> j) & 1
+ swap := bit ^ prevbit
+ prevbit = bit
+ cswap(&work[1], uint64(swap))
+ ladderstep(&work)
+ j--
+ }
+ j = 7
+ }
+
+ *xr = work[1]
+ *zr = work[2]
+}
+
+func scalarMult(out, in, base *[32]byte) {
+ var e [32]byte
+ copy(e[:], (*in)[:])
+ e[0] &= 248
+ e[31] &= 127
+ e[31] |= 64
+
+ var t, z [5]uint64
+ unpack(&t, base)
+ mladder(&t, &z, &e)
+ invert(&z, &z)
+ mul(&t, &t, &z)
+ pack(out, &t)
+}
+
+func setint(r *[5]uint64, v uint64) {
+ r[0] = v
+ r[1] = 0
+ r[2] = 0
+ r[3] = 0
+ r[4] = 0
+}
+
+// unpack sets r = x where r consists of 5, 51-bit limbs in little-endian
+// order.
+func unpack(r *[5]uint64, x *[32]byte) {
+ r[0] = uint64(x[0]) |
+ uint64(x[1])<<8 |
+ uint64(x[2])<<16 |
+ uint64(x[3])<<24 |
+ uint64(x[4])<<32 |
+ uint64(x[5])<<40 |
+ uint64(x[6]&7)<<48
+
+ r[1] = uint64(x[6])>>3 |
+ uint64(x[7])<<5 |
+ uint64(x[8])<<13 |
+ uint64(x[9])<<21 |
+ uint64(x[10])<<29 |
+ uint64(x[11])<<37 |
+ uint64(x[12]&63)<<45
+
+ r[2] = uint64(x[12])>>6 |
+ uint64(x[13])<<2 |
+ uint64(x[14])<<10 |
+ uint64(x[15])<<18 |
+ uint64(x[16])<<26 |
+ uint64(x[17])<<34 |
+ uint64(x[18])<<42 |
+ uint64(x[19]&1)<<50
+
+ r[3] = uint64(x[19])>>1 |
+ uint64(x[20])<<7 |
+ uint64(x[21])<<15 |
+ uint64(x[22])<<23 |
+ uint64(x[23])<<31 |
+ uint64(x[24])<<39 |
+ uint64(x[25]&15)<<47
+
+ r[4] = uint64(x[25])>>4 |
+ uint64(x[26])<<4 |
+ uint64(x[27])<<12 |
+ uint64(x[28])<<20 |
+ uint64(x[29])<<28 |
+ uint64(x[30])<<36 |
+ uint64(x[31]&127)<<44
+}
+
+// pack sets out = x where out is the usual, little-endian form of the 5,
+// 51-bit limbs in x.
+func pack(out *[32]byte, x *[5]uint64) {
+ t := *x
+ freeze(&t)
+
+ out[0] = byte(t[0])
+ out[1] = byte(t[0] >> 8)
+ out[2] = byte(t[0] >> 16)
+ out[3] = byte(t[0] >> 24)
+ out[4] = byte(t[0] >> 32)
+ out[5] = byte(t[0] >> 40)
+ out[6] = byte(t[0] >> 48)
+
+ out[6] ^= byte(t[1]<<3) & 0xf8
+ out[7] = byte(t[1] >> 5)
+ out[8] = byte(t[1] >> 13)
+ out[9] = byte(t[1] >> 21)
+ out[10] = byte(t[1] >> 29)
+ out[11] = byte(t[1] >> 37)
+ out[12] = byte(t[1] >> 45)
+
+ out[12] ^= byte(t[2]<<6) & 0xc0
+ out[13] = byte(t[2] >> 2)
+ out[14] = byte(t[2] >> 10)
+ out[15] = byte(t[2] >> 18)
+ out[16] = byte(t[2] >> 26)
+ out[17] = byte(t[2] >> 34)
+ out[18] = byte(t[2] >> 42)
+ out[19] = byte(t[2] >> 50)
+
+ out[19] ^= byte(t[3]<<1) & 0xfe
+ out[20] = byte(t[3] >> 7)
+ out[21] = byte(t[3] >> 15)
+ out[22] = byte(t[3] >> 23)
+ out[23] = byte(t[3] >> 31)
+ out[24] = byte(t[3] >> 39)
+ out[25] = byte(t[3] >> 47)
+
+ out[25] ^= byte(t[4]<<4) & 0xf0
+ out[26] = byte(t[4] >> 4)
+ out[27] = byte(t[4] >> 12)
+ out[28] = byte(t[4] >> 20)
+ out[29] = byte(t[4] >> 28)
+ out[30] = byte(t[4] >> 36)
+ out[31] = byte(t[4] >> 44)
+}
+
+// invert calculates r = x^-1 mod p using Fermat's little theorem.
+func invert(r *[5]uint64, x *[5]uint64) {
+ var z2, z9, z11, z2_5_0, z2_10_0, z2_20_0, z2_50_0, z2_100_0, t [5]uint64
+
+ square(&z2, x) /* 2 */
+ square(&t, &z2) /* 4 */
+ square(&t, &t) /* 8 */
+ mul(&z9, &t, x) /* 9 */
+ mul(&z11, &z9, &z2) /* 11 */
+ square(&t, &z11) /* 22 */
+ mul(&z2_5_0, &t, &z9) /* 2^5 - 2^0 = 31 */
+
+ square(&t, &z2_5_0) /* 2^6 - 2^1 */
+ for i := 1; i < 5; i++ { /* 2^20 - 2^10 */
+ square(&t, &t)
+ }
+ mul(&z2_10_0, &t, &z2_5_0) /* 2^10 - 2^0 */
+
+ square(&t, &z2_10_0) /* 2^11 - 2^1 */
+ for i := 1; i < 10; i++ { /* 2^20 - 2^10 */
+ square(&t, &t)
+ }
+ mul(&z2_20_0, &t, &z2_10_0) /* 2^20 - 2^0 */
+
+ square(&t, &z2_20_0) /* 2^21 - 2^1 */
+ for i := 1; i < 20; i++ { /* 2^40 - 2^20 */
+ square(&t, &t)
+ }
+ mul(&t, &t, &z2_20_0) /* 2^40 - 2^0 */
+
+ square(&t, &t) /* 2^41 - 2^1 */
+ for i := 1; i < 10; i++ { /* 2^50 - 2^10 */
+ square(&t, &t)
+ }
+ mul(&z2_50_0, &t, &z2_10_0) /* 2^50 - 2^0 */
+
+ square(&t, &z2_50_0) /* 2^51 - 2^1 */
+ for i := 1; i < 50; i++ { /* 2^100 - 2^50 */
+ square(&t, &t)
+ }
+ mul(&z2_100_0, &t, &z2_50_0) /* 2^100 - 2^0 */
+
+ square(&t, &z2_100_0) /* 2^101 - 2^1 */
+ for i := 1; i < 100; i++ { /* 2^200 - 2^100 */
+ square(&t, &t)
+ }
+ mul(&t, &t, &z2_100_0) /* 2^200 - 2^0 */
+
+ square(&t, &t) /* 2^201 - 2^1 */
+ for i := 1; i < 50; i++ { /* 2^250 - 2^50 */
+ square(&t, &t)
+ }
+ mul(&t, &t, &z2_50_0) /* 2^250 - 2^0 */
+
+ square(&t, &t) /* 2^251 - 2^1 */
+ square(&t, &t) /* 2^252 - 2^2 */
+ square(&t, &t) /* 2^253 - 2^3 */
+
+ square(&t, &t) /* 2^254 - 2^4 */
+
+ square(&t, &t) /* 2^255 - 2^5 */
+ mul(r, &t, &z11) /* 2^255 - 21 */
+}
diff --git a/vendor/golang.org/x/crypto/curve25519/mul_amd64.s b/vendor/golang.org/x/crypto/curve25519/mul_amd64.s
new file mode 100644
index 00000000..5ce80a2e
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/mul_amd64.s
@@ -0,0 +1,169 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+// +build amd64,!gccgo,!appengine
+
+#include "const_amd64.h"
+
+// func mul(dest, a, b *[5]uint64)
+TEXT ·mul(SB),0,$16-24
+ MOVQ dest+0(FP), DI
+ MOVQ a+8(FP), SI
+ MOVQ b+16(FP), DX
+
+ MOVQ DX,CX
+ MOVQ 24(SI),DX
+ IMUL3Q $19,DX,AX
+ MOVQ AX,0(SP)
+ MULQ 16(CX)
+ MOVQ AX,R8
+ MOVQ DX,R9
+ MOVQ 32(SI),DX
+ IMUL3Q $19,DX,AX
+ MOVQ AX,8(SP)
+ MULQ 8(CX)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 0(SI),AX
+ MULQ 0(CX)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 0(SI),AX
+ MULQ 8(CX)
+ MOVQ AX,R10
+ MOVQ DX,R11
+ MOVQ 0(SI),AX
+ MULQ 16(CX)
+ MOVQ AX,R12
+ MOVQ DX,R13
+ MOVQ 0(SI),AX
+ MULQ 24(CX)
+ MOVQ AX,R14
+ MOVQ DX,R15
+ MOVQ 0(SI),AX
+ MULQ 32(CX)
+ MOVQ AX,BX
+ MOVQ DX,BP
+ MOVQ 8(SI),AX
+ MULQ 0(CX)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 8(SI),AX
+ MULQ 8(CX)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 8(SI),AX
+ MULQ 16(CX)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 8(SI),AX
+ MULQ 24(CX)
+ ADDQ AX,BX
+ ADCQ DX,BP
+ MOVQ 8(SI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 32(CX)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 16(SI),AX
+ MULQ 0(CX)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 16(SI),AX
+ MULQ 8(CX)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 16(SI),AX
+ MULQ 16(CX)
+ ADDQ AX,BX
+ ADCQ DX,BP
+ MOVQ 16(SI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 24(CX)
+ ADDQ AX,R8
+ ADCQ DX,R9
+ MOVQ 16(SI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 32(CX)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 24(SI),AX
+ MULQ 0(CX)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ 24(SI),AX
+ MULQ 8(CX)
+ ADDQ AX,BX
+ ADCQ DX,BP
+ MOVQ 0(SP),AX
+ MULQ 24(CX)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 0(SP),AX
+ MULQ 32(CX)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 32(SI),AX
+ MULQ 0(CX)
+ ADDQ AX,BX
+ ADCQ DX,BP
+ MOVQ 8(SP),AX
+ MULQ 16(CX)
+ ADDQ AX,R10
+ ADCQ DX,R11
+ MOVQ 8(SP),AX
+ MULQ 24(CX)
+ ADDQ AX,R12
+ ADCQ DX,R13
+ MOVQ 8(SP),AX
+ MULQ 32(CX)
+ ADDQ AX,R14
+ ADCQ DX,R15
+ MOVQ $REDMASK51,SI
+ SHLQ $13,R9:R8
+ ANDQ SI,R8
+ SHLQ $13,R11:R10
+ ANDQ SI,R10
+ ADDQ R9,R10
+ SHLQ $13,R13:R12
+ ANDQ SI,R12
+ ADDQ R11,R12
+ SHLQ $13,R15:R14
+ ANDQ SI,R14
+ ADDQ R13,R14
+ SHLQ $13,BP:BX
+ ANDQ SI,BX
+ ADDQ R15,BX
+ IMUL3Q $19,BP,DX
+ ADDQ DX,R8
+ MOVQ R8,DX
+ SHRQ $51,DX
+ ADDQ R10,DX
+ MOVQ DX,CX
+ SHRQ $51,DX
+ ANDQ SI,R8
+ ADDQ R12,DX
+ MOVQ DX,R9
+ SHRQ $51,DX
+ ANDQ SI,CX
+ ADDQ R14,DX
+ MOVQ DX,AX
+ SHRQ $51,DX
+ ANDQ SI,R9
+ ADDQ BX,DX
+ MOVQ DX,R10
+ SHRQ $51,DX
+ ANDQ SI,AX
+ IMUL3Q $19,DX,DX
+ ADDQ DX,R8
+ ANDQ SI,R10
+ MOVQ R8,0(DI)
+ MOVQ CX,8(DI)
+ MOVQ R9,16(DI)
+ MOVQ AX,24(DI)
+ MOVQ R10,32(DI)
+ RET
diff --git a/vendor/golang.org/x/crypto/curve25519/square_amd64.s b/vendor/golang.org/x/crypto/curve25519/square_amd64.s
new file mode 100644
index 00000000..12f73734
--- /dev/null
+++ b/vendor/golang.org/x/crypto/curve25519/square_amd64.s
@@ -0,0 +1,132 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+// +build amd64,!gccgo,!appengine
+
+#include "const_amd64.h"
+
+// func square(out, in *[5]uint64)
+TEXT ·square(SB),7,$0-16
+ MOVQ out+0(FP), DI
+ MOVQ in+8(FP), SI
+
+ MOVQ 0(SI),AX
+ MULQ 0(SI)
+ MOVQ AX,CX
+ MOVQ DX,R8
+ MOVQ 0(SI),AX
+ SHLQ $1,AX
+ MULQ 8(SI)
+ MOVQ AX,R9
+ MOVQ DX,R10
+ MOVQ 0(SI),AX
+ SHLQ $1,AX
+ MULQ 16(SI)
+ MOVQ AX,R11
+ MOVQ DX,R12
+ MOVQ 0(SI),AX
+ SHLQ $1,AX
+ MULQ 24(SI)
+ MOVQ AX,R13
+ MOVQ DX,R14
+ MOVQ 0(SI),AX
+ SHLQ $1,AX
+ MULQ 32(SI)
+ MOVQ AX,R15
+ MOVQ DX,BX
+ MOVQ 8(SI),AX
+ MULQ 8(SI)
+ ADDQ AX,R11
+ ADCQ DX,R12
+ MOVQ 8(SI),AX
+ SHLQ $1,AX
+ MULQ 16(SI)
+ ADDQ AX,R13
+ ADCQ DX,R14
+ MOVQ 8(SI),AX
+ SHLQ $1,AX
+ MULQ 24(SI)
+ ADDQ AX,R15
+ ADCQ DX,BX
+ MOVQ 8(SI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 32(SI)
+ ADDQ AX,CX
+ ADCQ DX,R8
+ MOVQ 16(SI),AX
+ MULQ 16(SI)
+ ADDQ AX,R15
+ ADCQ DX,BX
+ MOVQ 16(SI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 24(SI)
+ ADDQ AX,CX
+ ADCQ DX,R8
+ MOVQ 16(SI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 32(SI)
+ ADDQ AX,R9
+ ADCQ DX,R10
+ MOVQ 24(SI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 24(SI)
+ ADDQ AX,R9
+ ADCQ DX,R10
+ MOVQ 24(SI),DX
+ IMUL3Q $38,DX,AX
+ MULQ 32(SI)
+ ADDQ AX,R11
+ ADCQ DX,R12
+ MOVQ 32(SI),DX
+ IMUL3Q $19,DX,AX
+ MULQ 32(SI)
+ ADDQ AX,R13
+ ADCQ DX,R14
+ MOVQ $REDMASK51,SI
+ SHLQ $13,R8:CX
+ ANDQ SI,CX
+ SHLQ $13,R10:R9
+ ANDQ SI,R9
+ ADDQ R8,R9
+ SHLQ $13,R12:R11
+ ANDQ SI,R11
+ ADDQ R10,R11
+ SHLQ $13,R14:R13
+ ANDQ SI,R13
+ ADDQ R12,R13
+ SHLQ $13,BX:R15
+ ANDQ SI,R15
+ ADDQ R14,R15
+ IMUL3Q $19,BX,DX
+ ADDQ DX,CX
+ MOVQ CX,DX
+ SHRQ $51,DX
+ ADDQ R9,DX
+ ANDQ SI,CX
+ MOVQ DX,R8
+ SHRQ $51,DX
+ ADDQ R11,DX
+ ANDQ SI,R8
+ MOVQ DX,R9
+ SHRQ $51,DX
+ ADDQ R13,DX
+ ANDQ SI,R9
+ MOVQ DX,AX
+ SHRQ $51,DX
+ ADDQ R15,DX
+ ANDQ SI,AX
+ MOVQ DX,R10
+ SHRQ $51,DX
+ IMUL3Q $19,DX,DX
+ ADDQ DX,CX
+ ANDQ SI,R10
+ MOVQ CX,0(DI)
+ MOVQ R8,8(DI)
+ MOVQ R9,16(DI)
+ MOVQ AX,24(DI)
+ MOVQ R10,32(DI)
+ RET
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 00:16:46 +0000