Method DecryptionStreamCipher

flow/StreamCipher.cpp:148–153

}

DecryptionStreamCipher::DecryptionStreamCipher(const StreamCipherKey* key, const StreamCipher::IV& iv)
  : cipher(key->size()) {
	EVP_DecryptInit_ex(cipher.getCtx(), EVP_aes_256_gcm(), nullptr, nullptr, nullptr);
	EVP_CIPHER_CTX_ctrl(cipher.getCtx(), EVP_CTRL_AEAD_SET_IVLEN, iv.size(), nullptr);
	EVP_DecryptInit_ex(cipher.getCtx(), nullptr, nullptr, key->data(), iv.data());
}

StringRef DecryptionStreamCipher::decrypt(unsigned char const* ciphertext, int len, Arena& arena) {
	CODE_PROBE(true, "Decrypting data with StreamCipher");