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qpdf/libqpdf/qpdf/QPDFCrypto_openssl.hh
Dean Scarff 9a3791c53b Properly detect OPENSSL_IS_BORINGSSL
OPENSSL_IS_BORINGSSL is not actually set by configure, so it will be
undefined until a BoringSSL header is included.  Hence the #ifdef logic
in QPDFCrypto_openssl.h would usually never apply.

This still worked because evp.h transitively included BoringSSL's
cipher.h and digest.h, but the latter are the correct (documented)
headers.

By re-ordering the includes, we can ensure the macro is defined when we
use it.

Also: fix case in the header guards.
2020-10-16 20:04:36 -04:00

54 lines
1.5 KiB
C++

#ifndef QPDFCRYPTO_OPENSSL_HH
#define QPDFCRYPTO_OPENSSL_HH
#include <qpdf/QPDFCryptoImpl.hh>
#include <string>
#include <openssl/rand.h>
#ifdef OPENSSL_IS_BORINGSSL
#include <openssl/cipher.h>
#include <openssl/digest.h>
#else
#include <openssl/evp.h>
#endif
class QPDFCrypto_openssl: public QPDFCryptoImpl
{
public:
QPDFCrypto_openssl();
QPDF_DLL
~QPDFCrypto_openssl() override;
void provideRandomData(unsigned char* data, size_t len) override;
void MD5_init() override;
void MD5_update(unsigned char const* data, size_t len) override;
void MD5_finalize() override;
void MD5_digest(MD5_Digest) override;
void RC4_init(unsigned char const* key_data, int key_len = -1) override;
void RC4_process(unsigned char* in_data, size_t len,
unsigned char* out_data = 0) override;
void RC4_finalize() override;
void SHA2_init(int bits) override;
void SHA2_update(unsigned char const* data, size_t len) override;
void SHA2_finalize() override;
std::string SHA2_digest() override;
void rijndael_init(
bool encrypt, unsigned char const* key_data, size_t key_len,
bool cbc_mode, unsigned char* cbc_block) override;
void rijndael_process(
unsigned char* in_data, unsigned char* out_data) override;
void rijndael_finalize() override;
private:
EVP_MD_CTX* const md_ctx;
EVP_CIPHER_CTX* const cipher_ctx;
uint8_t md_out[EVP_MAX_MD_SIZE];
size_t sha2_bits;
};
#endif // QPDFCRYPTO_OPENSSL_HH