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eddsa_sign.go
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eddsa_sign.go
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package eddsa
import (
"errors"
"crypto"
"crypto/rand"
"crypto/ed25519"
)
// 私钥签名
func (this EdDSA) Sign() EdDSA {
if this.privateKey == nil {
err := errors.New("EdDSA: [Sign()] privateKey error.")
return this.AppendError(err)
}
var key any
key = this.privateKey
var ed25519Key crypto.Signer
var ok bool
if ed25519Key, ok = key.(crypto.Signer); !ok {
err := errors.New("EdDSA: [Sign()] privateKey type error.")
return this.AppendError(err)
}
if _, ok := ed25519Key.Public().(ed25519.PublicKey); !ok {
err := errors.New("EdDSA: [Sign()] privateKey error.")
return this.AppendError(err)
}
sig, err := ed25519Key.Sign(rand.Reader, this.data, crypto.Hash(0))
if err != nil {
return this.AppendError(err)
}
this.paredData = []byte(sig)
return this
}
// 公钥验证
func (this EdDSA) Verify(data []byte) EdDSA {
if this.publicKey == nil {
err := errors.New("EdDSA: [Verify()] publicKey error.")
return this.AppendError(err)
}
var key any
key = this.publicKey
var ed25519Key ed25519.PublicKey
var ok bool
if ed25519Key, ok = key.(ed25519.PublicKey); !ok {
err := errors.New("EdDSA: [Verify()] publicKey type error.")
return this.AppendError(err)
}
this.verify = ed25519.Verify(ed25519Key, data, this.data)
return this
}