| 43 | } |
| 44 | |
| 45 | bool CCrypter::Encrypt(const CKeyingMaterial& vchPlaintext, vector<unsigned char>& vchCiphertext) { |
| 46 | if (!fKeySet) |
| 47 | return false; |
| 48 | |
| 49 | // max ciphertext len for a n bytes of plaintext is |
| 50 | // n + AES_BLOCK_SIZE - 1 bytes |
| 51 | int32_t nLen = vchPlaintext.size(); |
| 52 | int32_t nCLen = nLen + AES_BLOCK_SIZE, nFLen = 0; |
| 53 | vchCiphertext = vector<unsigned char>(nCLen); |
| 54 | |
| 55 | evp_cipher_ctx ctx(EVP_CIPHER_CTX_new()); |
| 56 | if (!ctx) { |
| 57 | return false; |
| 58 | } |
| 59 | |
| 60 | bool fOk = true; |
| 61 | |
| 62 | if (fOk) |
| 63 | fOk = EVP_EncryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, chKey, chIV); |
| 64 | if (fOk) |
| 65 | fOk = EVP_EncryptUpdate(ctx, &vchCiphertext[0], &nCLen, &vchPlaintext[0], nLen); |
| 66 | if (fOk) |
| 67 | fOk = EVP_EncryptFinal_ex(ctx, (&vchCiphertext[0]) + nCLen, &nFLen); |
| 68 | |
| 69 | if (!fOk) |
| 70 | return false; |
| 71 | |
| 72 | vchCiphertext.resize(nCLen + nFLen); |
| 73 | return true; |
| 74 | } |
| 75 | |
| 76 | bool CCrypter::Decrypt(const vector<unsigned char>& vchCiphertext, CKeyingMaterial& vchPlaintext) { |
| 77 | if (!fKeySet) |
no test coverage detected