Finish implementation of openpgp signing
This commit is contained in:
parent
c8e6792622
commit
6cd132b3f7
4 changed files with 50 additions and 19 deletions
2
go.mod
2
go.mod
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@ -9,3 +9,5 @@ require (
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golang.org/x/sys v0.0.0-20200909081042-eff7692f9009
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gopkg.in/yaml.v2 v2.4.0
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)
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replace golang.org/x/crypto => github.com/jandd/crypto v0.0.0-20210106144236-c3a8dd255ad6
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6
go.sum
6
go.sum
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@ -3,6 +3,8 @@ github.com/creack/goselect v0.1.1/go.mod h1:a/NhLweNvqIYMuxcMOuWY516Cimucms3DglD
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/jandd/crypto v0.0.0-20210106144236-c3a8dd255ad6 h1:CfOE6Sr6BvfT6R90AgKcospJGP5+hwYhOjFR1XVb68Q=
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github.com/jandd/crypto v0.0.0-20210106144236-c3a8dd255ad6/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM=
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@ -15,11 +17,7 @@ github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJy
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github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
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go.bug.st/serial v1.1.1 h1:5J1DpaIaSIruBi7jVnKXnhRS+YQ9+2PLJMtIZKoIgnc=
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go.bug.st/serial v1.1.1/go.mod h1:VmYBeyJWp5BnJ0tw2NUJHZdJTGl2ecBGABHlzRK1knY=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad h1:DN0cp81fZ3njFcrLCytUHRSUkqBjfTo4Tx9RJTWs0EY=
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golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad/go.mod h1:jdWPYTVW3xRLrWPugEBEK3UY2ZEsg3UU495nc5E+M+I=
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golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
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golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20200909081042-eff7692f9009 h1:W0lCpv29Hv0UaM1LXb9QlBHLNP8UFfcKjblhVCWftOM=
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golang.org/x/sys v0.0.0-20200909081042-eff7692f9009/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@ -312,7 +312,7 @@ func (p *CommandProcessor) signX509Certificate(system *IdSystemParameters, days
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func (p *CommandProcessor) signOpenpgpKey(system *IdSystemParameters, days uint16, pubKey []byte) ([]byte, error) {
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openPgpRoot := system.Root.(*openpgp_ops.OpenPGPRoot)
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signatureAlgorithm := system.MessageDigestAlgorithm.(*crypto.Hash)
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signatureAlgorithm := system.MessageDigestAlgorithm.(crypto.Hash)
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log.Debugf("sign openpgp for root %s", openPgpRoot)
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@ -9,6 +9,7 @@ import (
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log "github.com/sirupsen/logrus"
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"golang.org/x/crypto/openpgp"
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"golang.org/x/crypto/openpgp/armor"
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"golang.org/x/crypto/openpgp/packet"
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)
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@ -18,7 +19,7 @@ type OpenPGPRoot struct {
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Identifier string
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}
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func (r *OpenPGPRoot) SignPublicKey(pubKey []byte, algorithm *crypto.Hash, days uint16) ([]byte, error) {
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func (r *OpenPGPRoot) SignPublicKey(pubKey []byte, algorithm crypto.Hash, days uint16) ([]byte, error) {
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signingKey, err := r.findSigningKey(r.Identifier)
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if err != nil {
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return nil, fmt.Errorf("could not find a signing key matching %s: %v", r.Identifier, err)
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@ -29,30 +30,60 @@ func (r *OpenPGPRoot) SignPublicKey(pubKey []byte, algorithm *crypto.Hash, days
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return nil, fmt.Errorf("could not read openpgp keyring: %v", err)
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}
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signatures := make([]*openpgp.Entity, 0)
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output := bytes.NewBuffer([]byte{})
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armorOutput, err := armor.Encode(output, "PGP PUBLIC KEY BLOCK", map[string]string{})
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if err != nil {
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return nil, fmt.Errorf("could not create ASCII armor wrapper for openpgp output: %v", err)
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}
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for _, pe := range pubKeyRing {
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log.Tracef("found %+v", pe)
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log.Tracef("found %+v", pe.PrimaryKey.KeyIdString())
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for _, i := range pe.Identities {
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expiry := calculateExpiry(i, days)
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if !i.SelfSignature.KeyExpired(time.Now()) {
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signConfig := &packet.Config{
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DefaultHash: *algorithm,
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Time: func() { return calculateExpiry(i, days) },
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sig := &packet.Signature{
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SigType: packet.SigTypeGenericCert,
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PubKeyAlgo: signingKey.PrivateKey.PubKeyAlgo,
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Hash: algorithm,
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CreationTime: time.Now(),
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SigLifetimeSecs: expiry,
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IssuerKeyId: &signingKey.PrivateKey.KeyId,
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}
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pe.SignIdentity(i.Name, signingKey, signConfig)
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if err := sig.SignUserId(i.Name, pe.PrimaryKey, signingKey.PrivateKey, &packet.Config{
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DefaultHash: algorithm,
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}); err != nil {
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return nil, fmt.Errorf("could not sign identity %s: %v", i.Name, err)
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}
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i.Signatures = append(i.Signatures, sig)
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}
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}
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if err = pe.Serialize(armorOutput); err != nil {
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return nil, fmt.Errorf(
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"could not write signed public key %s to output: %v",
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pe.PrimaryKey.KeyIdString(),
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err,
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)
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}
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}
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if err = armorOutput.Close(); err != nil {
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return nil, fmt.Errorf("could not close output stream: %v", err)
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}
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log.Tracef("signed public key\n%s", output.String())
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return output.Bytes(), nil
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}
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func calculateExpiry(i *openpgp.Identity, days uint16) time.Time {
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maxExpiry := i.SelfSignature.CreationTime.Add(time.Second * time.Duration(*i.SelfSignature.KeyLifetimeSecs))
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calcExpiry := time.Now().Add(time.Hour * 24 * time.Duration(days))
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func calculateExpiry(i *openpgp.Identity, days uint16) *uint32 {
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maxExpiry := time.Second * time.Duration(*i.SelfSignature.KeyLifetimeSecs)
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calcExpiry := time.Hour * 24 * time.Duration(days)
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if calcExpiry.After(maxExpiry) {
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return maxExpiry
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if calcExpiry > maxExpiry {
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calcExpiry = maxExpiry
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}
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return maxExpiry
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expirySeconds := uint32(calcExpiry.Seconds())
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return &expirySeconds
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}
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func (r *OpenPGPRoot) findSigningKey(identifier string) (*openpgp.Entity, error) {
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@ -67,7 +98,7 @@ func (r *OpenPGPRoot) findSigningKey(identifier string) (*openpgp.Entity, error)
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return nil, fmt.Errorf("could not read keyring: %v", err)
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}
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for _, e := range el {
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log.Tracef("found %+v", e)
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log.Tracef("found %s", e.PrimaryKey.KeyIdString())
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for _, i := range e.Identities {
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if i.UserId.Email == identifier && len(e.Revocations) == 0 && !i.SelfSignature.KeyExpired(time.Now()) {
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return e, nil
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