github.com/enetx/g@v1.0.80/int_hash.go (about)

     1  package g
     2  
     3  import (
     4  	"crypto/md5"
     5  	"crypto/sha1"
     6  	"crypto/sha256"
     7  	"crypto/sha512"
     8  	"encoding/hex"
     9  	"hash"
    10  )
    11  
    12  // A struct that wraps an Int for hashing.
    13  type ihash struct{ int Int }
    14  
    15  // Hash returns a ihash struct wrapping the given Int.
    16  func (i Int) Hash() ihash { return ihash{i} }
    17  
    18  // MD5 computes the MD5 hash of the wrapped Int and returns the hash as an String.
    19  func (ih ihash) MD5() String { return intHasher(md5.New(), ih.int) }
    20  
    21  // SHA1 computes the SHA1 hash of the wrapped Int and returns the hash as an String.
    22  func (ih ihash) SHA1() String { return intHasher(sha1.New(), ih.int) }
    23  
    24  // SHA256 computes the SHA256 hash of the wrapped Int and returns the hash as an String.
    25  func (ih ihash) SHA256() String { return intHasher(sha256.New(), ih.int) }
    26  
    27  // SHA512 computes the SHA512 hash of the wrapped Int and returns the hash as an String.
    28  func (ih ihash) SHA512() String { return intHasher(sha512.New(), ih.int) }
    29  
    30  // intHasher a helper function that computes the hash of the given Int using the specified hash.Hash algorithm and returns the hash as an String.
    31  func intHasher(algorithm hash.Hash, ih Int) String {
    32  	_, _ = algorithm.Write(ih.Bytes())
    33  	return String(hex.EncodeToString(algorithm.Sum(nil)))
    34  }