cast.go

     1  // Copyright 2024 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 sha3
     6  
     7  import (
     8  	"bytes"
     9  	"crypto/internal/fips140"
    10  	"errors"
    11  )
    12  
    13  func init() {
    14  	fips140.CAST("cSHAKE128", func() error {
    15  		input := []byte{
    16  			0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
    17  			0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
    18  		}
    19  		want := []byte{
    20  			0xd2, 0x17, 0x37, 0x39, 0xf6, 0xa1, 0xe4, 0x6e,
    21  			0x81, 0xe5, 0x70, 0xe3, 0x1b, 0x10, 0x4c, 0x82,
    22  			0xc5, 0x48, 0xee, 0xe6, 0x09, 0xf5, 0x89, 0x52,
    23  			0x52, 0xa4, 0x69, 0xd4, 0xd0, 0x76, 0x68, 0x6b,
    24  		}
    25  		h := NewCShake128(input, input)
    26  		h.Write(input)
    27  		if got := h.Sum(nil); !bytes.Equal(got, want) {
    28  			return errors.New("unexpected result")
    29  		}
    30  		return nil
    31  	})
    32  }
    33
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