39 lines
839 B
Go
39 lines
839 B
Go
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package key
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import (
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"crypto/rand"
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"crypto/sha256"
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"encoding/base64"
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"errors"
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"strings"
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)
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const Prefix = "gl_"
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func Generate() (plain, displayPrefix string, hash []byte, err error) {
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return GenerateToken(Prefix)
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}
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func GenerateToken(prefix string) (plain, displayPrefix string, hash []byte, err error) {
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random := make([]byte, 32)
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if _, err = rand.Read(random); err != nil {
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return "", "", nil, err
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}
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plain = prefix + base64.RawURLEncoding.EncodeToString(random)
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displayPrefix = plain[:min(len(plain), 11)]
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hash = Hash(plain)
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return plain, displayPrefix, hash, nil
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}
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func Hash(plain string) []byte {
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sum := sha256.Sum256([]byte(plain))
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return sum[:]
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}
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func ValidateFormat(plain string) error {
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if !strings.HasPrefix(plain, Prefix) || len(plain) < 40 {
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return errors.New("invalid API key format")
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}
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return nil
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}
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