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45 lines
1.4 KiB
45 lines
1.4 KiB
/* |
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ftu - file transferring utility. |
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Copyright (C) 2021 Kasyanov Nikolay Alexeevich (Unbewohnte (https://unbewohnte.xyz/)) |
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This file is a part of ftu |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <https://www.gnu.org/licenses/>. |
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*/ |
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package encryption |
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import ( |
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"crypto/aes" |
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"crypto/cipher" |
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"fmt" |
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) |
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// Thanks to https://www.melvinvivas.com/how-to-encrypt-and-decrypt-data-using-aes/ |
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// Encrypts given data using aes encryption. |
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func Encrypt(key, dataToEncrypt []byte) ([]byte, error) { |
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block, err := aes.NewCipher(key) |
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if err != nil { |
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return nil, fmt.Errorf("could not create new AES cipher: %s", err) |
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} |
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aesGCM, err := cipher.NewGCM(block) |
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if err != nil { |
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return nil, fmt.Errorf("could not create new GCM: %s", err) |
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} |
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nonce := make([]byte, aesGCM.NonceSize()) |
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encryptedData := aesGCM.Seal(nonce, nonce, dataToEncrypt, nil) |
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return encryptedData, nil |
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}
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