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30 lines
830 B
30 lines
830 B
package types
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import (
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"bytes"
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"io"
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cmn "github.com/tendermint/tmlibs/common"
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"github.com/tendermint/tmlibs/merkle"
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)
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// Signable is an interface for all signable things.
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// It typically removes signatures before serializing.
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type Signable interface {
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WriteSignBytes(chainID string, w io.Writer, n *int, err *error)
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}
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// SignBytes is a convenience method for getting the bytes to sign of a Signable.
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func SignBytes(chainID string, o Signable) []byte {
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buf, n, err := new(bytes.Buffer), new(int), new(error)
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o.WriteSignBytes(chainID, buf, n, err)
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if *err != nil {
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cmn.PanicCrisis(err)
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}
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return buf.Bytes()
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}
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// HashSignBytes is a convenience method for getting the hash of the bytes of a signable
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func HashSignBytes(chainID string, o Signable) []byte {
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return merkle.SimpleHashFromBinary(SignBytes(chainID, o))
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}
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