1 /* 2 * Copyright (C) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef NSTACKX_OPENSSL_H 17 #define NSTACKX_OPENSSL_H 18 19 #include "nstackx_common_header.h" 20 21 #ifdef SSL_AND_CRYPTO_INCLUDED 22 #include <openssl/ssl.h> 23 #include <openssl/aes.h> 24 #include <openssl/evp.h> 25 #include <openssl/rand.h> 26 #endif // SSL_AND_CRYPTO_INCLUDED 27 28 #ifdef __cplusplus 29 extern "C" { 30 #endif 31 32 typedef enum { 33 CIPHER_AES_GCM = 0, 34 CIPHER_CHACHA, 35 } DFileCipherType; 36 37 #define AES_128_KEY_LENGTH 16 38 #define AES_192_KEY_LENGTH 24 39 #define AES_256_KEY_LENGTH 32 40 #define GCM_IV_LENGTH 12 41 #define GCM_MAX_AAD_LENGTH 64 42 #define GCM_TAG_LENGTH 16 43 #define GCM_ADDED_LEN (GCM_IV_LENGTH + GCM_TAG_LENGTH) 44 #define CHACHA20_KEY_LENGTH 32 45 #define CHACHA20_POLY1305_NAME "chacha20-poly1305" 46 47 #ifndef SSL_AND_CRYPTO_INCLUDED 48 typedef void EVP_CIPHER_CTX; 49 #undef GCM_TAG_LENGTH 50 #define GCM_TAG_LENGTH 0 51 #undef GCM_ADDED_LEN 52 #define GCM_ADDED_LEN 0 53 #endif // SSL_AND_CRYPTO_INCLUDED 54 55 typedef struct { 56 uint8_t key[AES_256_KEY_LENGTH]; 57 uint32_t keylen; 58 uint8_t iv[GCM_IV_LENGTH]; 59 uint32_t ivLen; 60 uint8_t aad[GCM_MAX_AAD_LENGTH]; 61 uint32_t aadLen; 62 EVP_CIPHER_CTX *ctx; 63 int cipherType; 64 } CryptPara; 65 66 typedef struct { 67 const uint8_t *buf; 68 uint32_t len; 69 } AesVec; 70 71 NSTACKX_EXPORT EVP_CIPHER_CTX *CreateCryptCtx(void); 72 NSTACKX_EXPORT void ClearCryptCtx(EVP_CIPHER_CTX *ctx); 73 NSTACKX_EXPORT uint32_t AesGcmEncryptVec(AesVec *vec, uint32_t vecNum, CryptPara *cryptPara, 74 uint8_t *outBuf, uint32_t outLen); 75 NSTACKX_EXPORT uint32_t AesGcmEncrypt(const uint8_t *inBuff, uint32_t inLen, CryptPara *cryptPara, 76 uint8_t *outBuff, uint32_t outLen); 77 NSTACKX_EXPORT uint32_t AesGcmDecrypt(uint8_t *inBuff, uint32_t inLen, CryptPara *cryptPara, 78 uint8_t *outBuff, uint32_t outLen); 79 NSTACKX_EXPORT int32_t GetRandBytes(uint8_t *buf, uint32_t len); 80 NSTACKX_EXPORT uint8_t IsCryptoIncluded(void); 81 NSTACKX_EXPORT uint8_t QueryCipherSupportByName(char *name); 82 83 #ifdef __cplusplus 84 } 85 #endif 86 87 #endif // NSTACKX_OPENSSL_H 88