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Add high-level Decrypt() and Encrypt() functions for use by importing applications

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This commit is contained in:
RandyTheSilly
2025-05-03 19:34:26 -04:00
parent 18ea71e7e4
commit e4ae5b4a9d
4 changed files with 31 additions and 22 deletions
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wrappers/aes.go
+7 -7
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@@ -13,7 +13,7 @@ const (
)
// EncryptAES encrypts data using AES-256-GCM.
func EncryptAES(data []byte, passphrase []byte) []byte {
func encryptAES(decBytes []byte, passphrase []byte) []byte {
// generate a random salt
salt := make([]byte, saltSize)
io.ReadFull(rand.Reader, salt)
@@ -32,7 +32,7 @@ func EncryptAES(data []byte, passphrase []byte) []byte {
io.ReadFull(rand.Reader, nonce)
// encrypt the data
ciphertext := aesGCM.Seal(nil, nonce, data, nil)
ciphertext := aesGCM.Seal(nil, nonce, decBytes, nil)
// format: salt + nonce + ciphertext
result := make([]byte, 0, saltSize+nonceSizeAES+len(ciphertext))
@@ -44,15 +44,15 @@ func EncryptAES(data []byte, passphrase []byte) []byte {
}
// DecryptAES decrypts data using AES256-GCM.
func DecryptAES(encryptedData []byte, passphrase []byte) ([]byte, error) {
if len(encryptedData) < saltSize+nonceSizeAES {
func decryptAES(encBytes []byte, passphrase []byte) ([]byte, error) {
if len(encBytes) < saltSize+nonceSizeAES {
return nil, errors.New("AES256-GCM: Encrypted data is too short")
}
// extract salt, nonce, and ciphertext
salt := encryptedData[:saltSize]
nonce := encryptedData[saltSize : saltSize+nonceSizeAES]
ciphertext := encryptedData[saltSize+nonceSizeAES:]
salt := encBytes[:saltSize]
nonce := encBytes[saltSize : saltSize+nonceSizeAES]
ciphertext := encBytes[saltSize+nonceSizeAES:]
// derive key from passphrase using the salt
key := deriveKey(passphrase, salt)