Method Decrypt

src/Crypto.cpp:165–193

int cRSAPrivateKey::Decrypt(const Byte * a_EncryptedData, size_t a_EncryptedLength, Byte * a_DecryptedData, size_t a_DecryptedMaxLength)
{
	if (a_EncryptedLength < m_Rsa.len)
	{
		LOGD("%s: Invalid a_EncryptedLength: got %u, exp at least %u",
			__FUNCTION__, (unsigned)a_EncryptedLength, (unsigned)(m_Rsa.len)
		);
		ASSERT(!"Invalid a_DecryptedMaxLength!");
		return -1;
	}
	if (a_DecryptedMaxLength < m_Rsa.len)
	{
		LOGD("%s: Invalid a_DecryptedMaxLength: got %u, exp at least %u",
			__FUNCTION__, (unsigned)a_EncryptedLength, (unsigned)(m_Rsa.len)
		);
		ASSERT(!"Invalid a_DecryptedMaxLength!");
		return -1;
	}
	size_t DecryptedLength;
	int res = rsa_pkcs1_decrypt(
		&m_Rsa, ctr_drbg_random, &m_Ctr_drbg, RSA_PRIVATE, &DecryptedLength,
		a_EncryptedData, a_DecryptedData, a_DecryptedMaxLength
	);
	if (res != 0)
	{
		return -1;
	}
	return (int)DecryptedLength;
}