| // Copyright lowRISC contributors. |
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. |
| // SPDX-License-Identifier: Apache-2.0 |
| |
| #ifndef CRYPTO_H_ |
| #define CRYPTO_H_ |
| |
| /** |
| * Encrypt using BoringSSL/OpenSSL |
| * |
| * @param output Output cipher text, buffer must be at least 32 bytes |
| * @param iv 16-byte initialization vector |
| * @param input Input plain text to encode |
| * @param input_len Length of the input plain text in bytes |
| * @param key Encryption key |
| * @param key_len Encryption key length in bytes (16, 24, 32) |
| * @return Length of the output cipher text in bytes, -1 in case of error |
| */ |
| int crypto_encrypt(unsigned char *output, const unsigned char *iv, |
| const unsigned char *input, const int input_len, |
| const unsigned char *key, const int key_len); |
| |
| /** |
| * Decrypt using BoringSSL/OpenSSL |
| * |
| * @param output Output plain text, buffer must be at least 32 bytes |
| * @param iv 16-byte initialization vector |
| * @param input Input cipher text to decode |
| * @param input_len Length of the input cipher text in bytes |
| * @param key Encryption key, decryption key is derived internally |
| * @param key_len Encryption key length in bytes (16, 24, 32) |
| * @return Length of the output plain text in bytes, -1 in case of error |
| */ |
| int crypto_decrypt(unsigned char *output, const unsigned char *iv, |
| const unsigned char *input, const int input_len, |
| const unsigned char *key, const int key_len); |
| |
| #endif // CRYPTO_H_ |
