diff options
Diffstat (limited to 'message')
| -rw-r--r-- | message/message.go | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/message/message.go b/message/message.go index 507a4e7..19f04a5 100644 --- a/message/message.go +++ b/message/message.go @@ -20,8 +20,9 @@ func InitIPFS() *ipfs.Shell { // Messages on Infodump use a "stamp" using the hashcash algorithm to prevent spam and enable storing messages by importance // The Message type contains the message itself and a nonce that is used to verify the stamp type Message struct { - Message string - Nonce int + Message string + Timestamp int64 + Nonce int } // Proof of Work: Find the nonce for a message by hashing the message and checking for at least n initial zeroes in the binary representation of the resulting hash @@ -43,9 +44,9 @@ func (msg *Message) ProofOfWork(n int) { *msg = m } -// Get the SHA256 hash of a message plus the nonce as a byte slice +// Get the SHA256 hash of a message plus the timestamp plus the nonce as a byte slice func (m *Message) Hash() [32]byte { - hash := sha256.Sum256([]byte(fmt.Sprintf("%s%d", m.Message, m.Nonce))) + hash := sha256.Sum256([]byte(m.Message + fmt.Sprintf("%d", m.Timestamp) + fmt.Sprintf("%d", m.Nonce))) return hash } @@ -76,8 +77,8 @@ func (m *Message) Lead() int { return CountLeadingZeroes(m.Hash()) } -func New(msg string, n int) *Message { - m := Message{Message: msg} +func New(msg string, n int, timestamp int64) *Message { + m := Message{Message: msg, Timestamp: timestamp} m.ProofOfWork(n) return &m } @@ -112,7 +113,7 @@ func (m *Messages) AddToIPFS() (string, error) { func AddJSONToIPFS(json []byte) (string, error) { // Create an IPFS instance based on the IPFSGateway myIPFS := ipfs.NewShell(IPFSGateway) - // Turn the JSON into a DAG node and return the CID + // Turn the JSON into a Reader and add it to IPFS cid, err := myIPFS.Add(bytes.NewReader(json)) if err != nil { return "", err |