AES encryption/decryption

• Encryption
• openssl enc -e -in original_file -out original_file.aes -aes256 -k password
• Decryption
• openssl enc -d -in original_file.aes -out original_file.out -aes256 -k password

AES size: original file size + 1, then padding to 16bytes, then add 16

e.g. 1

117 bytes

117 + 1 padding to 16 bytes => 128 bytes

128 bytes + 16 = 144 bytes

e.g. 2

127 bytes

127 + 1 padding to 16 bytes => 128 bytes

128 bytes + 16 = 144 bytes

e.g. 3

128 bytes

128 + 1 padding to 16 bytes => 144 bytes

144 bytes + 16 = 160 bytes

It's irrelevant to the length of password.