Function ReadProblemGPGInfo

common/persistence/problems/reader_deer.go:199–225

ReadProblemGPGInfo 读取题目携带的GPG信息

(problemFile string)

// ReadProblemGPGInfo 读取题目携带的GPG信息
func ReadProblemGPGInfo(problemFile string) (string, error) {
	pack, err := readProblemPackage(problemFile, false)
	if err != nil {
		return "", err
	}

	err = doProblemPackageValidation(pack, false)
	if err != nil {
		return "", err
	}

	if pack.CertSize == 0 {
		return "no GPG public key", nil
	}
	elist, err := openpgp.ReadArmoredKeyRing(bytes.NewReader(pack.Certificate))
	if err != nil {
		return "", err
	}
	if len(elist) < 1 {
		return "", errors.Errorf("GPG key error")
	}
	rel := ""
	for _, identify := range elist[0].Identities {
		rel += identify.Name + "\n"
	}
	return rel, nil
}