ObjFW  Diff

@property (readonly, nonatomic, getter=isCalculated) bool calculated;

/**
 * @brief A buffer containing the cryptographic hash.
 *
 * The size of the buffer depends on the hash used. The buffer is part of the
 * receiver's memory pool.
 *
 * @throw OFHashNotCalculatedException The hash hasn't been calculated yet
 */
@property (readonly, nonatomic) const unsigned char *digest
    OF_RETURNS_INNER_POINTER;

/**
 * @brief Creates a new cryptographic hash.
 *

- (instancetype)init OF_UNAVAILABLE;

/**
 * @brief Adds a buffer to the cryptographic hash to be calculated.
 *
 * @param buffer The buffer which should be included into the calculation
 * @param length The length of the buffer
 * @throw OFHashAlreadyCalculatedException The hash has already been calculated
 */
- (void)updateWithBuffer: (const void *)buffer length: (size_t)length;

/**
 * @brief Performs the final calculation of the cryptographic hash.
 *
 * @throw OFHashAlreadyCalculatedException The hash has already been calculated
 */
- (void)calculate;

/**
 * @brief Resets all state so that a new hash can be calculated.
 *
 * @warning This invalidates any pointer previously returned by @ref digest. If