mirror of
https://github.com/warmbly/warmbly.git
synced 2026-08-19 08:01:16 +00:00
Matthew Meszaros
32 lines
626 B
Go
32 lines
626 B
Go
package cipher
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import (
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"context"
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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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"io"
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)
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func (c *Cipher) Encrypt(ctx context.Context, s string) (string, error) {
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if s == "" {
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return "", nil // handle empty string
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}
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block, err := aes.NewCipher(c.plainDEK)
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if err != nil {
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return "", err
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}
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gcm, err := cipher.NewGCM(block)
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if err != nil {
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return "", err
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}
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nonce := make([]byte, gcm.NonceSize())
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if _, err := io.ReadFull(rand.Reader, nonce); err != nil {
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return "", err
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}
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ciphertext := gcm.Seal(nonce, nonce, []byte(s), nil)
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return base64.StdEncoding.EncodeToString(ciphertext), nil
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}
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