github.com/insolar/x-crypto@v0.0.0-20191031140942-75fab8a325f6/sha256/sha256block_arm64.go (about)

     1  // Copyright 2017 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package sha256
     6  
     7  import "golang.org/x/sys/cpu"
     8  
     9  var k = _K
    10  
    11  var hasSHA2 = cpu.ARM64.HasSHA2
    12  
    13  //go:noescape
    14  func sha256block(h []uint32, p []byte, k []uint32)
    15  
    16  func block(dig *digest, p []byte) {
    17  	if !hasSHA2 {
    18  		blockGeneric(dig, p)
    19  	} else {
    20  		h := dig.h[:]
    21  		sha256block(h, p, k)
    22  	}
    23  }