36 lines
700 B
Go
36 lines
700 B
Go
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package routecrypto
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import (
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"crypto/rand"
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"encoding/base64"
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"errors"
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)
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// GenerateKey creates a new key full of random data.
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func GenerateKey() (*[32]byte, error) {
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var k [32]byte
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_, err := rand.Read(k[:])
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if err != nil {
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return nil, err
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}
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return &k, nil
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}
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// ShowKey makes a string out of an encryption key.
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func ShowKey(key *[32]byte) string {
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return base64.URLEncoding.EncodeToString(key[:])
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}
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// ParseKey decodes a key from a string.
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func ParseKey(s string) (*[32]byte, error) {
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k := &[32]byte{}
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raw, err := base64.URLEncoding.DecodeString(s)
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if err != nil {
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return nil, err
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}
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if n := copy(k[:], raw); n < len(k) {
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return nil, errors.New("not valid")
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}
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return k, nil
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}
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