func (ast *AuthorizedState) VerifyState(asciiPubKey string) (err error) {
var stateString string
stateString, err = ast.GetStateString()
if err != nil {
return
}
//fmt.Println("verify:StateString :", stateString)
var sigBuf bytes.Buffer
sigBuf.WriteString(ast.AsciiSigOfState)
var stateStrBuf bytes.Buffer
stateStrBuf.WriteString(stateString)
//func CheckArmoredDetachedSignature(keyring KeyRing, signed, signature io.Reader)
// (signer *Entity, err error)
//KeyRing is an interface:=>EntityList implements KeyRing hence pass Entity List
_, pubEnt, errGetPub := PrcIdSigner.GetPub(asciiPubKey)
if errGetPub != nil {
err = errGetPub
return
}
pubEntList := &openpgp.EntityList{&pubEnt}
var signer *openpgp.Entity
signer, err = openpgp.CheckArmoredDetachedSignature(pubEntList, &stateStrBuf, &sigBuf)
if err == nil {
//fmt.Println("Verify:Signer Id = ", signer.Identities)
} else {
fmt.Println("VerifyState:Signer Id = ", signer.Identities, "Error = ", err.Error())
}
return
}
func GetAuthsForDomFromStates(remoteStatesInJSON string) (authsForDomains []AuthForDomain, err error) {
//1.GetAuths from Remote States
//2.Get Domains
//3.Verify Auths from dns TXT records for domain
//4.If verified add to authorities
allStates, err1 := GetStatesFromJSON(remoteStatesInJSON)
if err1 != nil {
err = err1
return
}
for _, state := range allStates {
claimedAuth := state.FromAuthority
for _, domain := range claimedAuth.DomainsUnderAuth {
pksTxtAuth, err2 := GetPksAuthTXTRecord(domain)
if err2 != nil {
log.Println(err2)
continue
}
pubKey, _, err3 := PrcIdSigner.GetPub(claimedAuth.AsciiPubKeyOfAuth)
if err3 != nil {
log.Println(err3)
continue
}
pubFP := fmt.Sprintf("%X", pubKey.Fingerprint[:])
pubFP = strings.ToUpper(pubFP)
txtFP := strings.ToUpper(pksTxtAuth.keyFingerPrint)
if txtFP != pubFP {
fmt.Println(txtFP + " != " + pubFP)
log.Println("Key FingerPrint differ in DNS Text Record of " + domain)
continue
}
err = state.VerifyState(claimedAuth.AsciiPubKeyOfAuth)
if err != nil {
log.Println(err)
continue
}
authsForDomains = append(authsForDomains, AuthForDomain{domain: domain, authority: claimedAuth})
}
}
return
}