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92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
//
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// Created by loki on 6/1/19.
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//
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#ifndef SUNSHINE_CRYPTO_H
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#define SUNSHINE_CRYPTO_H
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#include <array>
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#include <cassert>
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#include <openssl/evp.h>
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#include <openssl/rand.h>
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#include <openssl/sha.h>
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#include <openssl/x509.h>
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#include <openssl/rand.h>
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#include <iomanip>
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#include "utility.h"
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namespace crypto {
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struct creds_t {
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std::string x509;
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std::string pkey;
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};
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constexpr std::size_t digest_size = 256;
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void md_ctx_destroy(EVP_MD_CTX *);
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using sha256_t = std::array<std::uint8_t, SHA256_DIGEST_LENGTH>;
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using aes_t = std::array<std::uint8_t, 16>;
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using x509_t = util::safe_ptr<X509, X509_free>;
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using x509_store_t = util::safe_ptr<X509_STORE, X509_STORE_free>;
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using x509_store_ctx_t = util::safe_ptr<X509_STORE_CTX, X509_STORE_CTX_free>;
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using cipher_ctx_t = util::safe_ptr<EVP_CIPHER_CTX, EVP_CIPHER_CTX_free>;
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using md_ctx_t = util::safe_ptr<EVP_MD_CTX, md_ctx_destroy>;
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using bio_t = util::safe_ptr<BIO, BIO_free_all>;
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using pkey_t = util::safe_ptr<EVP_PKEY, EVP_PKEY_free>;
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sha256_t hash(const std::string_view &plaintext);
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std::string hash_hexstr(const std::string_view &plaintext);
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aes_t gen_aes_key(const std::array<uint8_t, 16> &salt, const std::string_view &pin);
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x509_t x509(const std::string_view &x);
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pkey_t pkey(const std::string_view &k);
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std::string pem(x509_t &x509);
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std::string pem(pkey_t &pkey);
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std::vector<uint8_t> sign256(const pkey_t &pkey, const std::string_view &data);
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bool verify256(const x509_t &x509, const std::string_view &data, const std::string_view &signature);
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creds_t gen_creds(const std::string_view &cn, std::uint32_t key_bits);
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std::string_view signature(const x509_t &x);
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std::string rand(std::size_t bytes);
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std::string rand_string(std::size_t bytes);
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class cert_chain_t {
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public:
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KITTY_DECL_CONSTR(cert_chain_t)
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void add(x509_t &&cert);
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const char *verify(x509_t::element_type *cert);
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private:
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std::vector<std::pair<x509_t, x509_store_t>> _certs;
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x509_store_ctx_t _cert_ctx;
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};
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class cipher_t {
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public:
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cipher_t(const aes_t &key);
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cipher_t(cipher_t &&) noexcept = default;
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cipher_t &operator=(cipher_t &&) noexcept = default;
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int encrypt(const std::string_view &plaintext, std::vector<std::uint8_t> &cipher);
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int decrypt_gcm(aes_t &iv, const std::string_view &cipher, std::vector<std::uint8_t> &plaintext);
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int decrypt(const std::string_view &cipher, std::vector<std::uint8_t> &plaintext);
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private:
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cipher_ctx_t ctx;
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aes_t key;
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public:
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bool padding;
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};
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} // namespace crypto
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#endif //SUNSHINE_CRYPTO_H
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