49 lines
906 B
Go
49 lines
906 B
Go
package crypt
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import (
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"crypto/rand"
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"math/big"
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"strings"
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)
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func CryptSHA512(phrase string) (string, error) {
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const SHA512SaltLength = 16
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salt, err := genSalt(SHA512SaltLength)
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if err != nil {
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return "", nil
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}
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hashSettings := "$6$" + salt
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return crypt(phrase, hashSettings)
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}
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func genSalt(length int) (string, error) {
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saltChars := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./"
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b := make([]byte, length)
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for i := range b {
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runeIndex, err := rand.Int(rand.Reader, big.NewInt(int64(len(saltChars))))
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if err != nil {
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return "", err
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}
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b[i] = saltChars[runeIndex.Int64()]
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}
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return string(b), nil
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}
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func PasswordIsCrypted(s string) bool {
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// taken from lorax src: src/pylorax/api/compose.py:533
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prefixes := [...]string{"$2b$", "$6$", "$5$"}
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for _, prefix := range prefixes {
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if strings.HasPrefix(s, prefix) {
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return true
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}
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}
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return false
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}
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