add package

[bytom/vapor.git] / vendor / github.com / minio / sha256-simd / sha256block_noasm.go

diff --git a/vendor/github.com/minio/sha256-simd/sha256block_noasm.go b/vendor/github.com/minio/sha256-simd/sha256block_noasm.go
new file mode 100644 (file)
index 0000000..356ca53
--- /dev/null
+++ b/vendor/github.com/minio/sha256-simd/sha256block_noasm.go
@@ -0,0 +1,136 @@
+//+build !arm64 !amd64 noasm appengine
+
+/*
+ * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sha256
+
+func blockGeneric(dig *digest, p []byte) {
+       var w [64]uint32
+       h0, h1, h2, h3, h4, h5, h6, h7 := dig.h[0], dig.h[1], dig.h[2], dig.h[3], dig.h[4], dig.h[5], dig.h[6], dig.h[7]
+       for len(p) >= chunk {
+               // Can interlace the computation of w with the
+               // rounds below if needed for speed.
+               for i := 0; i < 16; i++ {
+                       j := i * 4
+                       w[i] = uint32(p[j])<<24 | uint32(p[j+1])<<16 | uint32(p[j+2])<<8 | uint32(p[j+3])
+               }
+               for i := 16; i < 64; i++ {
+                       v1 := w[i-2]
+                       t1 := (v1>>17 | v1<<(32-17)) ^ (v1>>19 | v1<<(32-19)) ^ (v1 >> 10)
+                       v2 := w[i-15]
+                       t2 := (v2>>7 | v2<<(32-7)) ^ (v2>>18 | v2<<(32-18)) ^ (v2 >> 3)
+                       w[i] = t1 + w[i-7] + t2 + w[i-16]
+               }
+
+               a, b, c, d, e, f, g, h := h0, h1, h2, h3, h4, h5, h6, h7
+
+               for i := 0; i < 64; i++ {
+                       t1 := h + ((e>>6 | e<<(32-6)) ^ (e>>11 | e<<(32-11)) ^ (e>>25 | e<<(32-25))) + ((e & f) ^ (^e & g)) + _K[i] + w[i]
+
+                       t2 := ((a>>2 | a<<(32-2)) ^ (a>>13 | a<<(32-13)) ^ (a>>22 | a<<(32-22))) + ((a & b) ^ (a & c) ^ (b & c))
+
+                       h = g
+                       g = f
+                       f = e
+                       e = d + t1
+                       d = c
+                       c = b
+                       b = a
+                       a = t1 + t2
+               }
+
+               h0 += a
+               h1 += b
+               h2 += c
+               h3 += d
+               h4 += e
+               h5 += f
+               h6 += g
+               h7 += h
+
+               p = p[chunk:]
+       }
+
+       dig.h[0], dig.h[1], dig.h[2], dig.h[3], dig.h[4], dig.h[5], dig.h[6], dig.h[7] = h0, h1, h2, h3, h4, h5, h6, h7
+}
+
+var _K = []uint32{
+       0x428a2f98,
+       0x71374491,
+       0xb5c0fbcf,
+       0xe9b5dba5,
+       0x3956c25b,
+       0x59f111f1,
+       0x923f82a4,
+       0xab1c5ed5,
+       0xd807aa98,
+       0x12835b01,
+       0x243185be,
+       0x550c7dc3,
+       0x72be5d74,
+       0x80deb1fe,
+       0x9bdc06a7,
+       0xc19bf174,
+       0xe49b69c1,
+       0xefbe4786,
+       0x0fc19dc6,
+       0x240ca1cc,
+       0x2de92c6f,
+       0x4a7484aa,
+       0x5cb0a9dc,
+       0x76f988da,
+       0x983e5152,
+       0xa831c66d,
+       0xb00327c8,
+       0xbf597fc7,
+       0xc6e00bf3,
+       0xd5a79147,
+       0x06ca6351,
+       0x14292967,
+       0x27b70a85,
+       0x2e1b2138,
+       0x4d2c6dfc,
+       0x53380d13,
+       0x650a7354,
+       0x766a0abb,
+       0x81c2c92e,
+       0x92722c85,
+       0xa2bfe8a1,
+       0xa81a664b,
+       0xc24b8b70,
+       0xc76c51a3,
+       0xd192e819,
+       0xd6990624,
+       0xf40e3585,
+       0x106aa070,
+       0x19a4c116,
+       0x1e376c08,
+       0x2748774c,
+       0x34b0bcb5,
+       0x391c0cb3,
+       0x4ed8aa4a,
+       0x5b9cca4f,
+       0x682e6ff3,
+       0x748f82ee,
+       0x78a5636f,
+       0x84c87814,
+       0x8cc70208,
+       0x90befffa,
+       0xa4506ceb,
+       0xbef9a3f7,
+       0xc67178f2,
+}