80 lines
1.6 KiB
Go
80 lines
1.6 KiB
Go
package tool
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import (
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"crypto/aes"
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"crypto/cipher"
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"crypto/rand"
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"encoding/base64"
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"fmt"
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"io"
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"unicode"
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)
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func Encrypt(key []byte, text string) string {
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plaintext := []byte(text)
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block, err := aes.NewCipher(key)
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if err != nil {
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panic(err)
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}
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ciphertext := make([]byte, aes.BlockSize+len(plaintext))
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iv := ciphertext[:aes.BlockSize]
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if _, err := io.ReadFull(rand.Reader, iv); err != nil {
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panic(err)
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}
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stream := cipher.NewCFBEncrypter(block, iv)
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stream.XORKeyStream(ciphertext[aes.BlockSize:], plaintext)
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return base64.URLEncoding.EncodeToString(ciphertext)
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}
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func Decrypt(key []byte, cryptoText string) string {
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ciphertext, _ := base64.URLEncoding.DecodeString(cryptoText)
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block, err := aes.NewCipher(key)
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if err != nil {
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panic(err)
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}
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if len(ciphertext) < aes.BlockSize {
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panic("ciphertext too short")
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}
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iv := ciphertext[:aes.BlockSize]
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ciphertext = ciphertext[aes.BlockSize:]
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stream := cipher.NewCFBDecrypter(block, iv)
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stream.XORKeyStream(ciphertext, ciphertext)
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return fmt.Sprintf("%s", ciphertext)
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}
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func IsPasswordValid(s string) bool {
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var (
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hasMinLen = false
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hasUpper = false
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hasLower = false
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hasNumber = false
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hasSpecial = false
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)
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if len(s) >= 7 {
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hasMinLen = true
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}
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for _, char := range s {
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switch {
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case unicode.IsUpper(char):
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hasUpper = true
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case unicode.IsLower(char):
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hasLower = true
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case unicode.IsNumber(char):
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hasNumber = true
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case unicode.IsPunct(char) || unicode.IsSymbol(char):
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hasSpecial = true
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}
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}
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return hasMinLen && hasUpper && hasLower && hasNumber && hasSpecial
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}
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