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don't create EVP_CIPHER_CTX for each AEAD/Chacha20/Poly1305 message

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orignal
2024-12-09 20:59:59 -05:00
parent a7021a8283
commit 3534b9c499
7 changed files with 134 additions and 24 deletions
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36
libi2pd/Crypto.h
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@@ -187,10 +187,42 @@ namespace crypto
};
// AEAD/ChaCha20/Poly1305
bool AEADChaCha20Poly1305 (const uint8_t * msg, size_t msgLen, const uint8_t * ad, size_t adLen, const uint8_t * key, const uint8_t * nonce, uint8_t * buf, size_t len, bool encrypt); // msgLen is len without tag
void AEADChaCha20Poly1305Encrypt (const std::vector<std::pair<uint8_t *, size_t> >& bufs, const uint8_t * key, const uint8_t * nonce, uint8_t * mac); // encrypt multiple buffers with zero ad
class AEADChaCha20Poly1305Encryptor
{
public:
AEADChaCha20Poly1305Encryptor ();
~AEADChaCha20Poly1305Encryptor ();
bool Encrypt (const uint8_t * msg, size_t msgLen, const uint8_t * ad, size_t adLen,
const uint8_t * key, const uint8_t * nonce, uint8_t * buf, size_t len); // msgLen is len without tag
void Encrypt (const std::vector<std::pair<uint8_t *, size_t> >& bufs, const uint8_t * key, const uint8_t * nonce, uint8_t * mac); // encrypt multiple buffers with zero ad
private:
EVP_CIPHER_CTX * m_Ctx;
};
class AEADChaCha20Poly1305Decryptor
{
public:
AEADChaCha20Poly1305Decryptor ();
~AEADChaCha20Poly1305Decryptor ();
bool Decrypt (const uint8_t * msg, size_t msgLen, const uint8_t * ad, size_t adLen,
const uint8_t * key, const uint8_t * nonce, uint8_t * buf, size_t len); // msgLen is len without tag
private:
EVP_CIPHER_CTX * m_Ctx;
};
bool AEADChaCha20Poly1305 (const uint8_t * msg, size_t msgLen, const uint8_t * ad, size_t adLen,
const uint8_t * key, const uint8_t * nonce, uint8_t * buf, size_t len, bool encrypt); // msgLen is len without tag
// ChaCha20
void ChaCha20 (const uint8_t * msg, size_t msgLen, const uint8_t * key, const uint8_t * nonce, uint8_t * out);