calc: add xxh64 hash

README.md

@@ -94,6 +94,7 @@ with `hasher --list-hashes`
 | streebog-512      | GOST R 34.11-2012-512     | 512 bit  | 64 byte  | 2012 |
 | tiger192          | Tiger                     | 192 bit  | 24 byte  | 1996 |
 | whirlpool         | Whirlpool                 | 512 bit  | 64 byte  | 2000 |
+| xxh64             | xxHash 64                 | 64 bit   | 4 byte   | 2012 |
 
 ## Binary-to-text encodings
 

calc.go

@@ -15,6 +15,7 @@ import (
 	"io"
 	"sort"
 
+	"github.com/cespare/xxhash"
 	"github.com/cxmcc/tiger"
 	"github.com/dchest/blake256"
 	"github.com/dchest/blake2b"
@@ -76,6 +77,7 @@ var (
 		"fnv1a-32":          32,
 		"fnv1-64":           64,
 		"fnv1a-64":          64,
+		"xxh64":             64,
 		"gost94":            256,
 		"gost94-cryptopro":  256,
 		"md2":               128,
@@ -129,6 +131,7 @@ var (
 		"fnv1a-32":          fnv1a32Sum,
 		"fnv1-64":           fnv1_64Sum,
 		"fnv1a-64":          fnv1a64Sum,
+		"xxh64":             xxh64Sum,
 		"gost94":            gost94Sum,
 		"gost94-cryptopro":  gost94CryptoproSum,
 		"md2":               md2Sum,
@@ -630,3 +633,11 @@ func whirlpoolSum(r io.Reader) ([]byte, error) {
 	}
 	return h.Sum(nil), nil
 }
+
+func xxh64Sum(r io.Reader) ([]byte, error) {
+	h := xxhash.New()
+	if _, err := io.Copy(h, r); err != nil {
+		return nil, err
+	}
+	return h.Sum(nil), nil
+}

calc_test.go

@@ -162,6 +162,8 @@ var (
 		"whirlpool": {
 			fox:   "b97de512e91e3828b40d2b0fdce9ceb3c4a71f9bea8d88e75c4fa854df36725fd2b52eb6544edcacd6f8beddfea403cb55ae31f03ad62a5ef54e42ee82c3fb35",
 			blank: "19fa61d75522a4669b44e39c1d2e1726c530232130d407f89afee0964997f7a73e83be698b288febcf88e3e03c4f0757ea8964e59b63d93708b138cc42a66eb3"},
+		"xxh64": {fox: "0b242d361fda71bc",
+			blank: "ef46db3751d8e999"},
 	}
 )
 

go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
 	github.com/aybabtme/color v0.0.0-20140713052517-28ad4cc941d6
 	github.com/bproctor/base91 v0.0.0-20160902125316-7de6f1dd34e8
+	github.com/cespare/xxhash v1.1.0 // indirect
 	github.com/cxmcc/tiger v0.0.0-20170524142333-bde35e2713d7
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/dchest/blake256 v1.1.0

go.sum

@@ -1,3 +1,4 @@
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/alecthomas/kingpin v2.2.6+incompatible h1:5svnBTFgJjZvGKyYBtMB0+m5wvrbUHiqye8wRJMlnYI=
 github.com/alecthomas/kingpin v2.2.6+incompatible/go.mod h1:59OFYbFVLKQKq+mqrL6Rw5bR0c3ACQaawgXx0QYndlE=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM=
@@ -8,6 +9,8 @@ github.com/aybabtme/color v0.0.0-20140713052517-28ad4cc941d6 h1:k5FebMq+CuzGrf3L
 github.com/aybabtme/color v0.0.0-20140713052517-28ad4cc941d6/go.mod h1:k6bCbg1gudUfWem/VvfWXsk5Qqag/NDXzEHu0mNcsPM=
 github.com/bproctor/base91 v0.0.0-20160902125316-7de6f1dd34e8 h1:AOcLIabtn5jh31VACsbAI1R6y/FjyFRDyuNxkvHmSTI=
 github.com/bproctor/base91 v0.0.0-20160902125316-7de6f1dd34e8/go.mod h1:Qf+Cy/9Oy2JSEKDrf5nBXdsBqEFBNbU8Rzrart5f7h0=
+github.com/cespare/xxhash v1.1.0 h1:a6HrQnmkObjyL+Gs60czilIUGqrzKutQD6XZog3p+ko=
+github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/cxmcc/tiger v0.0.0-20170524142333-bde35e2713d7 h1:jBEtq1t2gpn2kEzvRlCUxvvrxl5aSWkXNPwe/hwvSNQ=
 github.com/cxmcc/tiger v0.0.0-20170524142333-bde35e2713d7/go.mod h1:ruCYvt9rtYymAr4rNmfYJrl1dz8HSXUFP7cufqKOsDI=
@@ -63,6 +66,7 @@ github.com/mewpkg/hashutil v1.0.1 h1:me5DWIMS8wLeMmtZnMxwNTMIA9nT9HvQZLYVMbmBIyw
 github.com/mewpkg/hashutil v1.0.1/go.mod h1:DSL30IKicBzaNFwGvhg9BG8YkZj0Nb+d6TDPb9P7hQY=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72/go.mod h1:JwIasOWyU6f++ZhiEuf87xNszmSA2myDM2Kzu9HwQUA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=