39 lines
954 B
Go
39 lines
954 B
Go
package event
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import (
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"crypto.orly/sha256"
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"encoders.orly/hex"
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"encoders.orly/ints"
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"encoders.orly/text"
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"lol.mleku.dev/log"
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)
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// ToCanonical converts the event to the canonical encoding used to derive the
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// event ID.
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func (ev *E) ToCanonical(dst []byte) (b []byte) {
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b = dst
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b = append(b, "[0,\""...)
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b = hex.EncAppend(b, ev.Pubkey)
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b = append(b, "\","...)
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b = ints.New(ev.CreatedAt).Marshal(b)
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b = append(b, ',')
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b = ints.New(ev.Kind).Marshal(b)
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b = append(b, ',')
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b = ev.Tags.Marshal(b)
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b = append(b, ',')
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b = text.AppendQuote(b, ev.Content, text.NostrEscape)
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b = append(b, ']')
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log.D.F("canonical: %s", b)
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return
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}
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// GetIDBytes returns the raw SHA256 hash of the canonical form of an event.E.
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func (ev *E) GetIDBytes() []byte { return Hash(ev.ToCanonical(nil)) }
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// Hash is a little helper generate a hash and return a slice instead of an
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// array.
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func Hash(in []byte) (out []byte) {
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h := sha256.Sum256(in)
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return h[:]
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}
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