/
hash.go
106 lines (91 loc) · 3.26 KB
/
hash.go
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package main
import (
"os"
"io"
"io/ioutil"
"fmt"
"hash"
"encoding/hex"
"golang.org/x/crypto/md4"
"crypto/md5"
"crypto/sha1"
"crypto/sha256"
"crypto/sha512"
"golang.org/x/crypto/sha3"
"golang.org/x/crypto/ripemd160"
"github.com/htruong/go-md2"
"github.com/jawher/mow.cli"
)
func printHash(fileName string, hashFunc func(io.Reader) []byte) {
var input io.Reader
if len(fileName) == 0 {
input = os.Stdin
} else {
file, err := os.Open(fileName)
if err != nil {
fmt.Println(err)
return
}
defer file.Close()
input = file
}
hash := hashFunc(input)
fmt.Println(hex.EncodeToString(hash))
}
func addHashCommand(app *cli.Cli, command string, description string, hashFactory func() hash.Hash) {
app.Command(command, description, func(cmd *cli.Cmd) {
cmd.Spec = "[FILE]"
file := cmd.StringArg("FILE", "", "File to hash.")
cmd.Action = func() {
printHash(*file, func(input io.Reader) []byte {
hash := hashFactory()
io.Copy(hash, input)
return hash.Sum(nil)
})
}
})
}
func addShakeCommand(app *cli.Cli, command string, description string, shakeSum func([]byte, []byte), defaultOutputBytes int) {
app.Command(command, description, func(cmd *cli.Cmd) {
cmd.Spec = "[-n] [FILE]"
file := cmd.StringArg("FILE", "", "File to hash.")
bytes := cmd.IntOpt("n", defaultOutputBytes, "Output length (bytes).")
hashFunc := func(input io.Reader) []byte {
data, err := ioutil.ReadAll(input)
if err != nil {
panic(err)
}
hash := make([]byte, *bytes)
shakeSum(hash, data)
return hash
}
cmd.Action = func() {
printHash(*file, hashFunc)
}
})
}
func run(args []string) {
app := cli.App("hash", "Hash stuff - https://github.com/schmich/hash")
addHashCommand(app, "md2", "MD2 hash, 128-bit (MD2)", md2.New)
addHashCommand(app, "md4", "MD4 hash, 128-bit (MD4)", md4.New)
addHashCommand(app, "md5", "MD5 hash, 128-bit (MD5)", md5.New)
addHashCommand(app, "sha1", "SHA-1 hash, 160-bit (SHA-1)", sha1.New)
addHashCommand(app, "sha2-224", "SHA-2 hash, 224-bit (SHA-224)", sha256.New224)
addHashCommand(app, "sha2-256", "SHA-2 hash, 256-bit (SHA-256)", sha256.New)
addHashCommand(app, "sha2-384", "SHA-2 hash, 384-bit (SHA-384)", sha512.New384)
addHashCommand(app, "sha2-512", "SHA-2 hash, 512-bit (SHA-512)", sha512.New)
addHashCommand(app, "sha2-512/224", "SHA-2 hash, 224-bit (SHA-512/224)", sha512.New512_224)
addHashCommand(app, "sha2-512/256", "SHA-2 hash, 256-bit (SHA-512/256)", sha512.New512_256)
addHashCommand(app, "sha3-224", "SHA-3 hash, 224-bit (SHA3-224)", sha3.New224)
addHashCommand(app, "sha3-256", "SHA-3 hash, 256-bit (SHA3-256)", sha3.New256)
addHashCommand(app, "sha3-384", "SHA-3 hash, 384-bit (SHA3-384)", sha3.New384)
addHashCommand(app, "sha3-512", "SHA-3 hash, 512-bit (SHA3-512)", sha3.New512)
addHashCommand(app, "sha3-512", "SHA-3 hash, 512-bit (SHA3-512)", sha3.New512)
addShakeCommand(app, "shake-128", "SHA-3 hash, n-byte (SHAKE-128)", sha3.ShakeSum128, 32)
addShakeCommand(app, "shake-256", "SHA-3 hash, n-byte (SHAKE-256)", sha3.ShakeSum256, 64)
addHashCommand(app, "ripemd-160", "RIPEMD hash, 160-bit (RIPEMD-160)", ripemd160.New)
app.Run(args)
}
func main() {
run(os.Args)
}