From 76652ac3cad64dbc2fd54e976ce4bad0a37caa03 Mon Sep 17 00:00:00 2001 From: Jarred Sumner Date: Sun, 23 Oct 2022 20:25:18 -0700 Subject: Add Web Crypto API (#1384) * Add Web Crypto API * Duplicate symbols * Update c_cpp_properties.json Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com> --- .../webcrypto/CryptoAlgorithmAES_CTROpenSSL.cpp | 145 +++++++++++++++++++++ 1 file changed, 145 insertions(+) create mode 100644 src/bun.js/bindings/webcrypto/CryptoAlgorithmAES_CTROpenSSL.cpp (limited to 'src/bun.js/bindings/webcrypto/CryptoAlgorithmAES_CTROpenSSL.cpp') diff --git a/src/bun.js/bindings/webcrypto/CryptoAlgorithmAES_CTROpenSSL.cpp b/src/bun.js/bindings/webcrypto/CryptoAlgorithmAES_CTROpenSSL.cpp new file mode 100644 index 000000000..ca2f9b559 --- /dev/null +++ b/src/bun.js/bindings/webcrypto/CryptoAlgorithmAES_CTROpenSSL.cpp @@ -0,0 +1,145 @@ +/* + * Copyright (C) 2020 Sony Interactive Entertainment Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "CryptoAlgorithmAES_CTR.h" + +#if ENABLE(WEB_CRYPTO) + +#include "CryptoAlgorithmAesCtrParams.h" +#include "CryptoKeyAES.h" +#include "OpenSSLCryptoUniquePtr.h" +#include + +namespace WebCore { + +static const EVP_CIPHER* aesAlgorithm(size_t keySize) +{ + if (keySize * 8 == 128) + return EVP_aes_128_ctr(); + + if (keySize * 8 == 192) + return EVP_aes_192_ctr(); + + if (keySize * 8 == 256) + return EVP_aes_256_ctr(); + + return nullptr; +} + +static std::optional> crypt(int operation, const Vector& key, const Vector& counter, size_t counterLength, const Vector& inputText) +{ + constexpr size_t blockSize = 16; + const EVP_CIPHER* algorithm = aesAlgorithm(key.size()); + if (!algorithm) + return std::nullopt; + + EvpCipherCtxPtr ctx; + int len; + + // Create and initialize the context + if (!(ctx = EvpCipherCtxPtr(EVP_CIPHER_CTX_new()))) + return std::nullopt; + + const size_t blocks = roundUpToMultipleOf(blockSize, inputText.size()) / blockSize; + + // Detect loop + if (counterLength < sizeof(size_t) * 8 && blocks > ((size_t)1 << counterLength)) + return std::nullopt; + + // Calculate capacity before overflow + CryptoAlgorithmAES_CTR::CounterBlockHelper counterBlockHelper(counter, counterLength); + size_t capacity = counterBlockHelper.countToOverflowSaturating(); + + // Divide data into two parts if necessary + size_t headSize = inputText.size(); + if (capacity < blocks) + headSize = capacity * blockSize; + + Vector outputText(inputText.size()); + // First part + { + // Initialize the encryption(decryption) operation + if (1 != EVP_CipherInit_ex(ctx.get(), algorithm, nullptr, key.data(), counter.data(), operation)) + return std::nullopt; + + // Disable padding + if (1 != EVP_CIPHER_CTX_set_padding(ctx.get(), 0)) + return std::nullopt; + + // Provide the message to be encrypted(decrypted), and obtain the encrypted(decrypted) output + if (1 != EVP_CipherUpdate(ctx.get(), outputText.data(), &len, inputText.data(), headSize)) + return std::nullopt; + + // Finalize the encryption(decryption) + if (1 != EVP_CipherFinal_ex(ctx.get(), outputText.data() + len, &len)) + return std::nullopt; + } + + // Sedond part + if (capacity < blocks) { + size_t tailSize = inputText.size() - headSize; + + Vector remainingCounter = counterBlockHelper.counterVectorAfterOverflow(); + + // Initialize the encryption(decryption) operation + if (1 != EVP_CipherInit_ex(ctx.get(), algorithm, nullptr, key.data(), remainingCounter.data(), operation)) + return std::nullopt; + + // Disable padding + if (1 != EVP_CIPHER_CTX_set_padding(ctx.get(), 0)) + return std::nullopt; + + // Provide the message to be encrypted(decrypted), and obtain the encrypted(decrypted) output + if (1 != EVP_CipherUpdate(ctx.get(), outputText.data() + headSize, &len, inputText.data() + headSize, tailSize)) + return std::nullopt; + + // Finalize the encryption(decryption) + if (1 != EVP_CipherFinal_ex(ctx.get(), outputText.data() + headSize + len, &len)) + return std::nullopt; + } + + return outputText; +} + +ExceptionOr> CryptoAlgorithmAES_CTR::platformEncrypt(const CryptoAlgorithmAesCtrParams& parameters, const CryptoKeyAES& key, const Vector& plainText) +{ + auto output = crypt(1, key.key(), parameters.counterVector(), parameters.length, plainText); + if (!output) + return Exception { OperationError }; + return WTFMove(*output); +} + +ExceptionOr> CryptoAlgorithmAES_CTR::platformDecrypt(const CryptoAlgorithmAesCtrParams& parameters, const CryptoKeyAES& key, const Vector& cipherText) +{ + auto output = crypt(0, key.key(), parameters.counterVector(), parameters.length, cipherText); + if (!output) + return Exception { OperationError }; + return WTFMove(*output); +} + +} // namespace WebCore + +#endif // ENABLE(WEB_CRYPTO) -- cgit v1.2.3