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90 lines
1.9 KiB
90 lines
1.9 KiB
package crypto
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import (
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"fmt"
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"crypto/subtle"
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. "github.com/tendermint/tmlibs/common"
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)
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func SignatureFromBytes(pubKeyBytes []byte) (pubKey Signature, err error) {
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err = cdc.UnmarshalBinaryBare(pubKeyBytes, &pubKey)
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return
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}
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//----------------------------------------
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type Signature interface {
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Bytes() []byte
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IsZero() bool
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Equals(Signature) bool
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}
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//-------------------------------------
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var _ Signature = SignatureEd25519{}
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const SignatureEd25519Size = 64
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// Implements Signature
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type SignatureEd25519 [SignatureEd25519Size]byte
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func (sig SignatureEd25519) Bytes() []byte {
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bz, err := cdc.MarshalBinaryBare(sig)
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if err != nil {
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panic(err)
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}
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return bz
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}
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func (sig SignatureEd25519) IsZero() bool { return len(sig) == 0 }
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func (sig SignatureEd25519) String() string { return fmt.Sprintf("/%X.../", Fingerprint(sig[:])) }
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func (sig SignatureEd25519) Equals(other Signature) bool {
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if otherEd, ok := other.(SignatureEd25519); ok {
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return subtle.ConstantTimeCompare(sig[:], otherEd[:]) == 1
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} else {
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return false
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}
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}
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func SignatureEd25519FromBytes(data []byte) Signature {
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var sig SignatureEd25519
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copy(sig[:], data)
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return sig
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}
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//-------------------------------------
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var _ Signature = SignatureSecp256k1{}
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// Implements Signature
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type SignatureSecp256k1 []byte
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func (sig SignatureSecp256k1) Bytes() []byte {
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bz, err := cdc.MarshalBinaryBare(sig)
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if err != nil {
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panic(err)
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}
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return bz
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}
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func (sig SignatureSecp256k1) IsZero() bool { return len(sig) == 0 }
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func (sig SignatureSecp256k1) String() string { return fmt.Sprintf("/%X.../", Fingerprint(sig[:])) }
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func (sig SignatureSecp256k1) Equals(other Signature) bool {
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if otherSecp, ok := other.(SignatureSecp256k1); ok {
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return subtle.ConstantTimeCompare(sig[:], otherSecp[:]) == 1
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} else {
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return false
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}
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}
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func SignatureSecp256k1FromBytes(data []byte) Signature {
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sig := make(SignatureSecp256k1, len(data))
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copy(sig[:], data)
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return sig
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}
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