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48 lines
1.3 KiB
48 lines
1.3 KiB
package event |
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import ( |
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"lol.mleku.dev/chk" |
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"lol.mleku.dev/errorf" |
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"lol.mleku.dev/log" |
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p256k1signer "p256k1.mleku.dev/signer" |
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"next.orly.dev/pkg/interfaces/signer" |
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"next.orly.dev/pkg/utils" |
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) |
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// Sign the event using the signer.I. Uses github.com/bitcoin-core/secp256k1 if |
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// available for much faster signatures. |
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// |
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// Note that this only populates the Pubkey, ID and Sig. The caller must |
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// set the CreatedAt timestamp as intended. |
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func (ev *E) Sign(keys signer.I) (err error) { |
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ev.Pubkey = keys.Pub() |
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ev.ID = ev.GetIDBytes() |
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if ev.Sig, err = keys.Sign(ev.ID); chk.E(err) { |
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return |
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} |
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return |
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} |
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// Verify an event is signed by the pubkey it contains. Uses |
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// github.com/bitcoin-core/secp256k1 if available for faster verification. |
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func (ev *E) Verify() (valid bool, err error) { |
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keys := p256k1signer.NewP256K1Signer() |
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if err = keys.InitPub(ev.Pubkey); chk.E(err) { |
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return |
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} |
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if valid, err = keys.Verify(ev.ID, ev.Sig); chk.T(err) { |
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// check that this isn't because of a bogus ID |
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id := ev.GetIDBytes() |
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if !utils.FastEqual(id, ev.ID) { |
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log.E.Ln("event Subscription incorrect") |
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ev.ID = id |
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err = nil |
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if valid, err = keys.Verify(ev.ID, ev.Sig); chk.E(err) { |
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return |
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} |
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err = errorf.W("event Subscription incorrect but signature is valid on correct Subscription") |
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} |
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return |
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} |
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return |
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}
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