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package main
import (
"errors"
"regexp"
"strings"
"github.com/jsimonetti/pwscheme/ssha"
"github.com/jsimonetti/pwscheme/ssha256"
"github.com/jsimonetti/pwscheme/ssha512"
)
const (
SSHA = "{SSHA}"
SSHA256 = "{SSHA256}"
SSHA512 = "{SSHA512}"
)
var scheme = regexp.MustCompile(`^{([0-9a-zA-Z]+)}`)
// Encode encodes the string to ssha512
func SSHAEncode(rawPassPhrase string) (string, error) {
return ssha512.Generate(rawPassPhrase, 16)
}
// Matches matches the encoded password and the raw password
func SSHAMatches(encodedPassPhrase string, rawPassPhrase string) (bool, error) {
cleanEncodedPass := uppercaseScheme(encodedPassPhrase)
hashType, err := determineHashType(cleanEncodedPass)
if err != nil {
return false, errors.New("invalid password hash stored")
}
switch hashType {
case SSHA:
return ssha.Validate(rawPassPhrase, encodedPassPhrase)
case SSHA256:
return ssha256.Validate(rawPassPhrase, encodedPassPhrase)
case SSHA512:
return ssha512.Validate(rawPassPhrase, encodedPassPhrase)
}
return false, errors.New("no matching hash type found")
}
func determineHashType(hash string) (string, error) {
if len(hash) >= 7 && string(hash[0:6]) == SSHA {
return SSHA, nil
}
if len(hash) >= 10 && string(hash[0:9]) == SSHA256 {
return SSHA256, nil
}
if len(hash) >= 10 && string(hash[0:9]) == SSHA512 {
return SSHA512, nil
}
return "", errors.New("no valid hash found")
}
func uppercaseScheme(hash string) string {
return scheme.ReplaceAllStringFunc(hash, func(w string) string {
return strings.ToUpper(w)
})
}
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