/
bch.go
73 lines (60 loc) · 1.31 KB
/
bch.go
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package main
import (
"fmt"
"os"
"github.com/urfave/cli/v2"
"golang.org/x/crypto/bcrypt"
"golang.org/x/crypto/ssh/terminal"
)
func hash(c *cli.Context) error {
fmt.Println("Enter password: ")
password, _ := terminal.ReadPassword(0)
factor := c.Int("factor")
hash, err := bcrypt.GenerateFromPassword(password, factor)
if err == nil {
fmt.Println(string(hash))
} else {
fmt.Printf("Error: %s\n", err)
}
return err
}
func verify(c *cli.Context) error {
if !c.Args().Present() {
fmt.Println("Error: a hash must be provided in order to verify")
os.Exit(1)
}
hashed := c.Args().First()
hashedBytes := []byte(hashed)
fmt.Println("Enter password: ")
password, _ := terminal.ReadPassword(0)
err := bcrypt.CompareHashAndPassword(hashedBytes, password)
fmt.Println(err == nil)
return err
}
func main() {
app := &cli.App{
Name: "bch",
Usage: "Generate and verify bcrypt password hashes",
Commands: []*cli.Command{
{
Name: "hash",
Usage: "Generate bcrypt password hash",
Flags: []cli.Flag{
&cli.IntFlag{
Name: "factor, f",
Value: 12,
Usage: "work factor",
},
},
Action: hash,
},
{
Name: "verify",
Usage: "Verify given hash against entered password",
ArgsUsage: "[hash]",
Action: verify,
},
},
}
app.Run(os.Args)
}