Documentation
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Index ¶
- func DHRatchetX25519(rootKey []byte, publicKey *ed25519.PublicKey, privateKey *ed25519.PrivateKey, ...) (nextRootKey []byte, nextChainKey []byte, returnError error)
- func MessageKey(chainKey []byte, length int, info []byte, hashString string) (nextMessageKey []byte, nextChainKey []byte, returnError error)
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func DHRatchetX25519 ¶
func DHRatchetX25519( rootKey []byte, publicKey *ed25519.PublicKey, privateKey *ed25519.PrivateKey, info []byte, length int, hashString string) ( nextRootKey []byte, nextChainKey []byte, returnError error)
DHRatchetX25519 creates the next root key and chain key. For the DH element X25519 is used.
You need to provide the current root key and the public and private component for the DH element. You should also provide the length of all keys. Length will be 32 if you provide 0, hashstring will be SHA512 if you provide "".
Info is set to an application-specific byte sequence distinct from other uses of HKDF in the application.
The function returns the root key, chain key and an error which is nil if everything went correctly.
func MessageKey ¶
func MessageKey( chainKey []byte, length int, info []byte, hashString string) ( nextMessageKey []byte, nextChainKey []byte, returnError error)
MessageKey creates the next message key in a chain.
You need to provide the current chain key and the length it is supposed to have. Length will be 32 if you provide 0, hashstring will be SHA512 if you provide "".
Info is set to an application-specific byte sequence distinct from other uses of HKDF in the application.
It returns the message key which has 2.5 times the length (e.g. if len(chainKey) = 32, len(messageKey) = 80), the next chain key and an error which is nil if nothing bad happened.
Types ¶
This section is empty.
Source Files