39 lines
1001 B
Go
39 lines
1001 B
Go
package main
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import "encoding/base64"
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import "crypto/rand"
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import "golang.org/x/crypto/bcrypt"
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// Generate a cryptographically secure set of random bytes..
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func GenerateSafeString(length int) (string, error) {
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rb := make([]byte, length)
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_, err := rand.Read(rb)
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if err != nil {
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return "", err
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}
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return base64.URLEncoding.EncodeToString(rb), nil
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}
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// Generate a bcrypt hash from a password and a salt
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func BcryptGeneratePassword(password string) (hashedPassword string, salt string, err error) {
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salt, err = GenerateSafeString(saltLength)
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if err != nil {
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return "", "", err
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}
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password = password + salt
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hashedPassword, err = bcryptGeneratePasswordNoSalt(password)
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if err != nil {
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return "", "", err
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}
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return hashedPassword, salt, nil
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}
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func bcryptGeneratePasswordNoSalt(password string) (hash string, err error) {
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hashedPassword, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
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if err != nil {
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return "", err
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}
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return string(hashedPassword), nil
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}
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