Component: Hydro Encryption (Comms: Networking)

Hydro Encryption component

A cipher suite to enable encryption and decryption of data messages, based on libhydrogen.

Please click here to download the component source project: FC_Comp_Source_libhydrogen.fcfx

Please click here to view the component source code (Beta): FC_Comp_Source_libhydrogen.fcfx

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	hash_keygen
Creates a secret key suitable for use with the hash_hash function. You must provide a 32 byte array for the key.
- BYTE	key

- VOID	Return

	hash_with_key
Creates a hash fingerprint of the data, using the given key. Returns 0 if successful.
- BYTE	hash
Buffer for the hash. Size >=32 makes it practically impossible for two messages to produce the same fingerprint.
- BYTE	data
The data buffer to be processed
- UINT	size
Byte count of the data to be processed
- BYTE	key
Key to be used
- INT	Return

	hash_without_key
Creates a hash fingerprint of the data, which will always have the same fingerprint, similar to the MD5 or SHA-1 Returns 0 if successful.
- BYTE	hash
Buffer for the hash. Size >=32 makes it practically impossible for two messages to produce the same fingerprint.
- BYTE	data
Data buffer to be processed
- UINT	size
Byte count of data to be processed
- INT	Return

	init
Initialisation function. To be called at the very start of your program.
- INT	Return

	secretbox_decrypt
Decrypts a message with a secret key. A single key is used both to encrypt/sign and verify/decrypt messages. For this reason, it is critical to keep the key confidential. Returns 0 on success.
- BYTE	message
Buffer for the decrypted message. Size must be at least length - 36
- UINT	length
The length (byte count) of the ciphertext
- UINT	ID
Message ID. Must match with the original message ID. Can be 0
- BYTE	key
The secret key
- BYTE	ciphertext
Buffer containing the ciphertext to be decrypted.
- INT	Return

	secretbox_encrypt
Encrypts a message with a secret key. A single key is used both to encrypt/sign and verify/decrypt messages. For this reason, it is critical to keep the key confidential. Returns 0 on success.
- BYTE	message
Buffer containing the message to be encrypted.
- UINT	length
The length (byte count) of the message
- UINT	ID
Message ID. Can be 0
- BYTE	key
The secret key
- BYTE	ciphertext
Buffer for ciphertext output. Buffer size must be at least length + 36
- INT	Return

	secretbox_keygen
Creates a secret key suitable for use with the secretbox functions. You must provide a 32 byte array for the key.
- BYTE	key

- VOID	Return

	sign_create
Computes a signature for a message using the secret key. Returns 0 if successful.
- BYTE	signature
Buffer to receive the signature. Must be 64 bytes.
- BYTE	message
Buffer containing the data to sign
- UINT	message_size
Byte count of the message
- BYTE	secret_key
Secret/Private key to be used.Size is 64 bytes.
- INT	Return

	sign_keygen
Creates Private and Public key pair to sign and verify messages. Returns 0 if successful.
- BYTE	Secret
Buffer to receive the Private/Secret Key. Buffer size must be 64 bytes
- BYTE	Public
Buffer to receive the Public key. Buffer size must be 32 bytes
- INT	Return

	sign_verify
Verify the signature of a mesasge using the public key. Returns 0 if successful.
- BYTE	signature
Buffer to receive the signature. Must be 64 bytes.
- BYTE	message
Buffer containing the data to sign
- UINT	message_size
Byte count of the message
- BYTE	public_key
Public key to be used.Size is 32 bytes.
- INT	Return

	Properties