40 lines
725 B
Go
40 lines
725 B
Go
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package bcrypt
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import (
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"fmt"
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"golang.org/x/crypto/bcrypt"
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)
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var _ Password = (*password)(nil)
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type Password interface {
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i()
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Generate(pwd string) string
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Validate(pwd, hash string) bool
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}
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type password struct {
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cost int
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}
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func (p *password) i() {}
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func NewPassword(cost int) (Password, error) {
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if cost < bcrypt.MinCost || cost > bcrypt.MaxCost {
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return nil, fmt.Errorf("cost out of range")
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}
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return &password{
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cost: cost,
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}, nil
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}
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func (p *password) Generate(pwd string) string {
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hash, _ := bcrypt.GenerateFromPassword([]byte(pwd), p.cost)
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return string(hash)
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}
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func (p *password) Validate(pwd, hash string) bool {
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err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(pwd))
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return err == nil
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}
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