Added support for ECDH in enveloped data with ECDSA certificates.
- fixed parsing of choice(was compatible with Apple mail.app which tagged kari explicitly) - minor fixes
This commit is contained in:
parent
58514b0041
commit
5f34d82562
@ -19,7 +19,7 @@ It supports enveloped data with AES in CBC mode. Decryption also works with (3)D
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This is covered in
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- Cryptographic Message Syntax (CMS) Authenticated-Enveloped-Data Content Type [rfc5083](https://tools.ietf.org/html/rfc5083)
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- Using ChaCha20-Poly1305 Authenticated Encryption in the Cryptographic Message Syntax (CMS) [rfc8103](https://tools.ietf.org/html/rfc8103)
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- Using AES-CCM and AES-GCM Authenticated Encryption in the Cryptographic Message Syntax (CMS) [rfc5084](https://tools.ietf.org/html/rfc 5084)
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- Using AES-CCM and AES-GCM Authenticated Encryption in the Cryptographic Message Syntax (CMS) [rfc5084](https://tools.ietf.org/html/rfc5084)
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## Examples
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18
asn1/asn1.go
18
asn1/asn1.go
@ -760,7 +760,7 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam
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if err != nil {
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return
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}
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if params.explicit {
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if params.explicit && !params.choice {
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expectedClass := ClassContextSpecific
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if params.application {
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expectedClass = ClassApplication
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@ -968,19 +968,13 @@ func parseField(v reflect.Value, bytes []byte, initOffset int, params fieldParam
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}
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innerOffset := 0
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if params.choice {
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if !params.explicit {
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innerBytes = bytes[initOffset:]
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}
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}
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for i := 0; i < structType.NumField(); i++ {
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field := structType.Field(i)
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if params.choice {
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tag := parseFieldParameters(field.Tag.Get("asn1")).tag
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if tag != nil && t.tag == *tag || t.class != ClassContextSpecific && tag == nil {
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if tag == nil || params.set {
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innerBytes = bytes[initOffset:offset]
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}
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innerOffset, err = parseField(val.Field(i), innerBytes, innerOffset, fieldParameters{})
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return
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}
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continue
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}
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if i == 0 && field.Type == rawContentsType {
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continue
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}
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@ -482,9 +482,6 @@ func makeBody(value reflect.Value, params fieldParameters) (e encoder, err error
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m := make([]encoder, n1)
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for i := 0; i < n1; i++ {
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fp := parseFieldParameters(t.Field(i + startingField).Tag.Get("asn1"))
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if params.explicit && params.choice {
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fp.explicit = true
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}
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m[i], err = makeField(v.Field(i+startingField), fp)
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if err != nil {
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return nil, err
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@ -501,9 +498,6 @@ func makeBody(value reflect.Value, params fieldParameters) (e encoder, err error
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var fp fieldParameters
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fp.choice = params.choice
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if params.choice && params.set {
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fp.explicit = true
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}
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switch l := v.Len(); l {
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case 0:
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12
cms/cms.go
12
cms/cms.go
@ -65,7 +65,11 @@ func (cms *CMS) Encrypt(data []byte, recipients []*x509.Certificate) (der []byte
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var reciInfos []protocol.RecipientInfo
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for _, recipient := range recipients {
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rInfo := protocol.NewRecipientInfo(recipient, key)
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var rInfo protocol.RecipientInfo
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rInfo, err = protocol.NewRecipientInfo(recipient, key)
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if err != nil {
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return
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}
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reciInfos = append(reciInfos, rInfo)
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}
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@ -90,7 +94,11 @@ func (cms *CMS) AuthEncrypt(data []byte, recipients []*x509.Certificate) (der []
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var reciInfos []protocol.RecipientInfo
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for _, recipient := range recipients {
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rInfo := protocol.NewRecipientInfo(recipient, key)
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var rInfo protocol.RecipientInfo
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rInfo, err = protocol.NewRecipientInfo(recipient, key)
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if err != nil {
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return
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}
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reciInfos = append(reciInfos, rInfo)
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}
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253
cms/cms_test.go
253
cms/cms_test.go
@ -3,10 +3,13 @@ package cms
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import (
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"bytes"
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"crypto"
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"crypto/ecdsa"
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"crypto/elliptic"
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"crypto/rand"
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"crypto/tls"
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"crypto/x509"
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"crypto/x509/pkix"
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"log"
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"strings"
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"testing"
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openssl "github.com/InfiniteLoopSpace/go_S-MIME/openssl"
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@ -26,162 +29,216 @@ var (
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CommonName: "leaf.example.com",
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}))
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ecKey, _ = ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
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leafECC = intermediate.Issue(pki.Subject(pkix.Name{
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CommonName: "leaf.example.com",
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}), pki.PrivateKey(ecKey))
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keyPair = tls.Certificate{
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Certificate: [][]byte{leaf.Certificate.Raw, intermediate.Certificate.Raw, root.Certificate.Raw},
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PrivateKey: leaf.PrivateKey.(crypto.PrivateKey),
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Leaf: leaf.Certificate,
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}
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keyPairECC = tls.Certificate{
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Certificate: [][]byte{leafECC.Certificate.Raw, intermediate.Certificate.Raw, root.Certificate.Raw},
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PrivateKey: leafECC.PrivateKey.(crypto.PrivateKey),
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Leaf: leafECC.Certificate,
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}
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keyPairs = []tls.Certificate{}
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keyPairsOpenssl = []tls.Certificate{}
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)
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func TestMain(m *testing.M) {
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keyPairs = []tls.Certificate{keyPair, keyPairECC}
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version, err := openssl.Openssl(nil, "version")
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if err == nil {
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keyPairsOpenssl = append(keyPairsOpenssl, keyPair)
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}
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if strings.HasPrefix(string(version), "OpenSSL 1.1") {
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openssl.SMIME = "cms"
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keyPairsOpenssl = append(keyPairsOpenssl, keyPairECC)
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}
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m.Run()
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}
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func TestAuthEnrypt(t *testing.T) {
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cms, err := New(keyPair)
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if err != nil {
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t.Error(err)
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}
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for _, keypair := range keyPairs {
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cms, err := New(keypair)
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if err != nil {
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t.Error(err)
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}
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plaintext := []byte("Hallo Welt!")
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plaintext := []byte("Hallo Welt!")
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ciphertext, err := cms.AuthEncrypt(plaintext, []*x509.Certificate{leaf.Certificate})
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if err != nil {
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t.Error(err)
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}
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ciphertext, err := cms.AuthEncrypt(plaintext, []*x509.Certificate{keypair.Leaf})
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if err != nil {
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t.Error(err)
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}
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plain, err := cms.AuthDecrypt(ciphertext)
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if err != nil {
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log.Fatal(err)
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}
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plain, err := cms.AuthDecrypt(ciphertext)
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if err != nil {
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t.Error(err)
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}
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if !bytes.Equal(plaintext, plain) {
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t.Fatal("Encryption and decryption are not inverse")
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if !bytes.Equal(plaintext, plain) {
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t.Fatal("Encryption and decryption are not inverse")
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}
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}
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}
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func TestEnryptDecrypt(t *testing.T) {
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cms, err := New(keyPair)
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if err != nil {
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t.Error(err)
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}
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for _, keypair := range keyPairs {
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cms, err := New(keypair)
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if err != nil {
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t.Error(err)
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}
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plaintext := []byte("Hallo Welt!")
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plaintext := []byte("Hallo Welt!")
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ciphertext, err := cms.Encrypt(plaintext, []*x509.Certificate{leaf.Certificate})
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if err != nil {
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t.Error(err)
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}
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ciphertext, err := cms.Encrypt(plaintext, []*x509.Certificate{keypair.Leaf})
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if err != nil {
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t.Error(err)
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}
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plain, err := cms.Decrypt(ciphertext)
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if err != nil {
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log.Fatal(err)
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}
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plain, err := cms.Decrypt(ciphertext)
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if err != nil {
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t.Error(err)
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}
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if !bytes.Equal(plaintext, plain) {
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t.Fatal("Encryption and decryption are not inverse")
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if !bytes.Equal(plaintext, plain) {
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t.Fatal("Encryption and decryption are not inverse")
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}
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}
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}
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func TestSignVerify(t *testing.T) {
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cms, err := New(keyPair)
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if err != nil {
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t.Error(err)
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}
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cms.roots.AddCert(root.Certificate)
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for _, keypair := range keyPairs {
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cms, err := New(keypair)
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if err != nil {
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t.Error(err)
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}
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msg := []byte("Hallo Welt!")
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cms.roots.AddCert(root.Certificate)
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der, err := cms.Sign(msg)
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if err != nil {
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t.Error(err)
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}
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msg := []byte("Hallo Welt!")
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_, err = cms.Verify(der)
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if err != nil {
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t.Error(err)
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der, err := cms.Sign(msg)
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if err != nil {
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t.Error(err)
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}
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_, err = cms.Verify(der)
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if err != nil {
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t.Error(err)
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}
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}
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}
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func TestEncryptOpenSSL(t *testing.T) {
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message := []byte("Hallo Welt!")
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der, err := openssl.Encrypt(message, leaf.Certificate, "-outform", "DER")
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if err != nil {
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t.Error(err)
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}
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for _, keypair := range keyPairsOpenssl {
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message := []byte("Hallo Welt!")
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cms, err := New(keyPair)
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plain, err := cms.Decrypt(der)
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if err != nil {
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t.Error(err)
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}
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der, err := openssl.Encrypt(message, keypair.Leaf, "-outform", "DER")
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if err != nil {
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t.Error(err)
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}
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if !bytes.Equal(message, plain) {
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t.Fatal("Encryption and decryption are not inverse")
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cms, err := New(keypair)
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plain, err := cms.Decrypt(der)
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if err != nil {
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t.Error(err)
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}
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if !bytes.Equal(message, plain) {
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t.Fatal("Encryption and decryption are not inverse")
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}
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}
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}
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func TestDecryptOpenSSL(t *testing.T) {
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message := []byte("Hallo Welt!")
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cms, _ := New()
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ciphertext, err := cms.Encrypt(message, []*x509.Certificate{leaf.Certificate})
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if err != nil {
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t.Error(err)
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}
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for _, keypair := range keyPairsOpenssl {
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message := []byte("Hallo Welt!")
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plain, err := openssl.Decrypt(ciphertext, leaf.PrivateKey, "-inform", "DER")
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if err != nil {
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t.Error(err)
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}
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cms, _ := New()
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ciphertext, err := cms.Encrypt(message, []*x509.Certificate{keypair.Leaf})
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if err != nil {
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t.Error(err)
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}
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if !bytes.Equal(message, plain) {
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t.Fatal("Encryption and decryption are not inverse")
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plain, err := openssl.Decrypt(ciphertext, keypair.PrivateKey, "-inform", "DER")
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if err != nil {
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t.Error(err)
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}
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if !bytes.Equal(message, plain) {
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t.Fatal("Encryption and decryption are not inverse")
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}
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}
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}
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func TestSignOpenSSL(t *testing.T) {
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message := []byte("Hallo Welt")
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sig, err := openssl.SignDetached(message, leaf.Certificate, leaf.PrivateKey, []*x509.Certificate{intermediate.Certificate}, "-outform", "DER")
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if err != nil {
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t.Error(err)
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}
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for _, keypair := range keyPairsOpenssl {
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message := []byte("Hallo Welt")
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cms, err := New()
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if err != nil {
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t.Error(err)
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}
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cms.roots.AddCert(root.Certificate)
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sig, err := openssl.SignDetached(message, keypair.Leaf, keypair.PrivateKey, []*x509.Certificate{intermediate.Certificate}, "-outform", "DER")
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if err != nil {
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t.Error(err)
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}
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_, err = cms.Verify(sig)
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if err != nil {
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t.Error(err)
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cms, err := New()
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if err != nil {
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t.Error(err)
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}
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cms.roots.AddCert(root.Certificate)
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_, err = cms.Verify(sig)
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if err != nil {
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t.Error(err)
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}
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}
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}
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func TestVerifyOpenSSL(t *testing.T) {
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cms, err := New(keyPair)
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if err != nil {
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t.Error(err)
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}
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cms.TimeStamp = true
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for _, keypair := range keyPairsOpenssl {
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cms, err := New(keypair)
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if err != nil {
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t.Error(err)
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}
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cms.roots.AddCert(root.Certificate)
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cms.TimeStamp = true
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msg := []byte("Hallo Welt!")
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cms.roots.AddCert(root.Certificate)
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der, err := cms.Sign(msg)
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if err != nil {
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t.Error(err)
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}
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msg := []byte("Hallo Welt!")
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sig, err := openssl.Verify(der, root.Certificate, "-inform", "DER")
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if err != nil {
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t.Error(err)
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}
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der, err := cms.Sign(msg)
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if err != nil {
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t.Error(err)
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}
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if !bytes.Equal(msg, sig) {
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t.Fatal("Signed message and message do not agree!")
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sig, err := openssl.Verify(der, root.Certificate, "-inform", "DER")
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if err != nil {
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t.Error(err)
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}
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if !bytes.Equal(msg, sig) {
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t.Fatal("Signed message and message do not agree!")
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}
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}
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}
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|
218
cms/protocol/ecdh.go
Normal file
218
cms/protocol/ecdh.go
Normal file
@ -0,0 +1,218 @@
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package protocol
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import (
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"crypto"
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"crypto/ecdsa"
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"crypto/elliptic"
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"crypto/rand"
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"crypto/tls"
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"crypto/x509"
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"crypto/x509/pkix"
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"encoding/asn1"
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"encoding/binary"
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"errors"
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"math/big"
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"github.com/InfiniteLoopSpace/go_S-MIME/oid"
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)
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var errUnsupported = errors.New("Unsupported hash function")
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// ECDHsharedSecret computes shared secret with ephemeral static ECDH
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func ECDHsharedSecret(curve elliptic.Curve, priv []byte, pubX, pubY *big.Int) []byte {
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x, _ := curve.ScalarMult(pubX, pubY, priv)
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return x.Bytes()
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}
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// ANSIx963KDF implents ANSI X9.63 key derivation function
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func ANSIx963KDF(sharedSecret, sharedInfo []byte, keyLen int, hash crypto.Hash) (key []byte, err error) {
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ctr := make([]byte, 4)
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ctr[3] = 0x01
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if hash == 0 || !hash.Available() {
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return nil, errUnsupported
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}
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h := hash.New()
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for i := 0; i < keyLen/hash.Size()+1; i++ {
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h.Reset()
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h.Write(sharedSecret)
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h.Write(ctr)
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h.Write(sharedInfo)
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key = append(key, h.Sum(nil)...)
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// Increment counter
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for i := len(ctr) - 1; i >= 0; i-- {
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ctr[i]++
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if ctr[i] != 0 {
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break
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}
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}
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}
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return key[:keyLen], nil
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}
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func encryptKeyECDH(key []byte, recipient *x509.Certificate) (kari KeyAgreeRecipientInfo, err error) {
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keyWrapAlgorithm := oid.KeyWrap{KeyWrapAlgorithm: oid.AES128Wrap}
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keyEncryptionAlgorithm := oid.DHSinglePassstdDHsha256kdfscheme
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hash := oid.KDFHashAlgorithm[keyEncryptionAlgorithm.String()]
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kari.UKM = make([]byte, 8)
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rand.Read(kari.UKM)
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kari.Version = 3
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kari.Originator.OriginatorKey.Algorithm = pkix.AlgorithmIdentifier{Algorithm: oid.ECPublicKey}
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// check recipient key
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if recipient.PublicKeyAlgorithm != x509.ECDSA {
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err = errors.New("Recipient certficiate has wrong public key algorithm, expected ECDSA")
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return
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}
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|
||||
pubKey, ok := recipient.PublicKey.(*ecdsa.PublicKey)
|
||||
if !ok {
|
||||
err = errors.New("Can not parse public key of recipient")
|
||||
return
|
||||
}
|
||||
|
||||
// genrate ephemeral public key and key encryption key
|
||||
|
||||
priv, x, y, err := elliptic.GenerateKey(pubKey.Curve, rand.Reader)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
ephPubKey := elliptic.Marshal(pubKey.Curve, x, y)
|
||||
kari.Originator.OriginatorKey.PublicKey = asn1.BitString{Bytes: ephPubKey, BitLength: len(ephPubKey) * 8}
|
||||
|
||||
sharedSecret := ECDHsharedSecret(pubKey.Curve, priv, pubKey.X, pubKey.Y)
|
||||
|
||||
keyLenBigEnd := make([]byte, 4)
|
||||
binary.BigEndian.PutUint32(keyLenBigEnd, uint32(keyWrapAlgorithm.KeyLen())*8)
|
||||
sharedInfo := ECCCMSSharedInfo{KeyInfo: keyWrapAlgorithm.AlgorithmIdentifier(),
|
||||
SuppPubInfo: keyLenBigEnd,
|
||||
EntityUInfo: kari.UKM}
|
||||
|
||||
sharedInfoDER, err := asn1.Marshal(sharedInfo)
|
||||
|
||||
kek, err := ANSIx963KDF(sharedSecret, sharedInfoDER, keyWrapAlgorithm.KeyLen(), hash)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// encrypt key
|
||||
|
||||
keyWrapAlgorithm.KEK = kek
|
||||
encKey, err := keyWrapAlgorithm.Wrap(key)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
keyWrapAlgorithmIdentifier, err := RawValue(keyWrapAlgorithm.AlgorithmIdentifier())
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
kari.KeyEncryptionAlgorithm = pkix.AlgorithmIdentifier{Algorithm: keyEncryptionAlgorithm,
|
||||
Parameters: keyWrapAlgorithmIdentifier}
|
||||
|
||||
ias, err := NewIssuerAndSerialNumber(recipient)
|
||||
karID := KeyAgreeRecipientIdentifier{IAS: ias}
|
||||
|
||||
kari.RecipientEncryptedKeys = append(kari.RecipientEncryptedKeys, RecipientEncryptedKey{RID: karID, EncryptedKey: encKey})
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// ECCCMSSharedInfo ECC-CMS-SharedInfo ::= SEQUENCE {
|
||||
// keyInfo AlgorithmIdentifier,
|
||||
// entityUInfo [0] EXPLICIT OCTET STRING OPTIONAL,
|
||||
// suppPubInfo [2] EXPLICIT OCTET STRING }
|
||||
type ECCCMSSharedInfo struct {
|
||||
KeyInfo pkix.AlgorithmIdentifier
|
||||
EntityUInfo []byte `asn1:"optional,explicit,tag:0"`
|
||||
SuppPubInfo []byte `asn1:"explicit,tag:2"`
|
||||
}
|
||||
|
||||
func (kari *KeyAgreeRecipientInfo) decryptKey(keyPair tls.Certificate) (key []byte, err error) {
|
||||
|
||||
// check for ec key
|
||||
|
||||
if kari.Version != 3 {
|
||||
err = errors.New("Version not supported")
|
||||
return
|
||||
}
|
||||
|
||||
if !kari.Originator.OriginatorKey.Algorithm.Algorithm.Equal(oid.ECPublicKey) {
|
||||
err = errors.New("Orginator key algorithm not supported")
|
||||
return
|
||||
}
|
||||
|
||||
pubKey, ok := keyPair.Leaf.PublicKey.(*ecdsa.PublicKey)
|
||||
if !ok {
|
||||
err = errors.New("Can not parse public key of recipient")
|
||||
return
|
||||
}
|
||||
|
||||
x, y := elliptic.Unmarshal(pubKey.Curve, kari.Originator.OriginatorKey.PublicKey.Bytes)
|
||||
|
||||
// genrate ephemeral public key and key encryption key
|
||||
|
||||
priv := keyPair.PrivateKey.(*ecdsa.PrivateKey)
|
||||
|
||||
privateKeyBytes := keyPair.PrivateKey.(*ecdsa.PrivateKey).D.Bytes()
|
||||
paddedPrivateKey := make([]byte, (priv.Curve.Params().N.BitLen()+7)/8)
|
||||
copy(paddedPrivateKey[len(paddedPrivateKey)-len(privateKeyBytes):], privateKeyBytes)
|
||||
|
||||
sharedSecret := ECDHsharedSecret(pubKey.Curve, paddedPrivateKey, x, y)
|
||||
|
||||
hash, ok := oid.KDFHashAlgorithm[kari.KeyEncryptionAlgorithm.Algorithm.String()]
|
||||
if !ok {
|
||||
err = errors.New("Unsupported key derivation hash algorithm")
|
||||
return
|
||||
}
|
||||
|
||||
var keyWrapAlgorithmIdentifier pkix.AlgorithmIdentifier
|
||||
asn1.Unmarshal(kari.KeyEncryptionAlgorithm.Parameters.FullBytes, &keyWrapAlgorithmIdentifier)
|
||||
keyWrapAlgorithm := oid.KeyWrap{KeyWrapAlgorithm: keyWrapAlgorithmIdentifier.Algorithm}
|
||||
|
||||
//
|
||||
|
||||
keyLenBigEnd := make([]byte, 4)
|
||||
binary.BigEndian.PutUint32(keyLenBigEnd, uint32(keyWrapAlgorithm.KeyLen())*8)
|
||||
sharedInfo := ECCCMSSharedInfo{KeyInfo: keyWrapAlgorithmIdentifier,
|
||||
SuppPubInfo: keyLenBigEnd,
|
||||
EntityUInfo: kari.UKM}
|
||||
|
||||
sharedInfoDER, err := asn1.Marshal(sharedInfo)
|
||||
|
||||
kek, err := ANSIx963KDF(sharedSecret, sharedInfoDER, keyWrapAlgorithm.KeyLen(), hash)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
keyWrapAlgorithm.KEK = kek
|
||||
|
||||
// encrypt key
|
||||
|
||||
ias, err := NewIssuerAndSerialNumber(keyPair.Leaf)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
for i := range kari.RecipientEncryptedKeys {
|
||||
if kari.RecipientEncryptedKeys[i].RID.IAS.Equal(ias) {
|
||||
key, err = keyWrapAlgorithm.UnWrap(kari.RecipientEncryptedKeys[i].EncryptedKey)
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
err = ErrNoKeyFound
|
||||
|
||||
return
|
||||
}
|
@ -58,7 +58,7 @@ func (ed *EnvelopedData) decryptKey(keyPair tls.Certificate) (key []byte, err er
|
||||
for i := range ed.RecipientInfos {
|
||||
|
||||
key, err = ed.RecipientInfos[i].decryptKey(keyPair)
|
||||
if key != nil {
|
||||
if key != nil || err != ErrNoKeyFound {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
@ -33,8 +33,14 @@ type RecipientInfo struct {
|
||||
|
||||
func (recInfo *RecipientInfo) decryptKey(keyPair tls.Certificate) (key []byte, err error) {
|
||||
|
||||
return recInfo.KTRI.decryptKey(keyPair)
|
||||
key, err = recInfo.KTRI.decryptKey(keyPair)
|
||||
if key != nil {
|
||||
return
|
||||
}
|
||||
|
||||
key, err = recInfo.KARI.decryptKey(keyPair)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
//KeyTransRecipientInfo ::= SEQUENCE {
|
||||
@ -102,7 +108,7 @@ type RecipientIdentifier struct {
|
||||
}
|
||||
|
||||
// NewRecipientInfo creates RecipientInfo for giben recipient and key.
|
||||
func NewRecipientInfo(recipient *x509.Certificate, key []byte) RecipientInfo {
|
||||
func NewRecipientInfo(recipient *x509.Certificate, key []byte) (info RecipientInfo, err error) {
|
||||
version := 0 //issuerAndSerialNumber
|
||||
|
||||
rid := RecipientIdentifier{}
|
||||
@ -118,24 +124,35 @@ func NewRecipientInfo(recipient *x509.Certificate, key []byte) RecipientInfo {
|
||||
rid.SKI = recipient.SubjectKeyId
|
||||
}
|
||||
|
||||
kea := oid.PublicKeyAlgorithmToEncrytionAlgorithm[recipient.PublicKeyAlgorithm]
|
||||
if _, ok := oid.PublicKeyAlgorithmToEncrytionAlgorithm[recipient.PublicKeyAlgorithm]; !ok {
|
||||
log.Fatal("NewRecipientInfo: PublicKeyAlgorithm not supported")
|
||||
switch recipient.PublicKeyAlgorithm {
|
||||
case x509.RSA:
|
||||
var encrypted []byte
|
||||
encrypted, err = encryptKeyRSA(key, recipient)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
info = RecipientInfo{
|
||||
KTRI: KeyTransRecipientInfo{
|
||||
Version: version,
|
||||
Rid: rid,
|
||||
KeyEncryptionAlgorithm: pkix.AlgorithmIdentifier{Algorithm: oid.EncryptionAlgorithmRSA},
|
||||
EncryptedKey: encrypted,
|
||||
}}
|
||||
case x509.ECDSA:
|
||||
var kari KeyAgreeRecipientInfo
|
||||
kari, err = encryptKeyECDH(key, recipient)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
info = RecipientInfo{KARI: kari}
|
||||
default:
|
||||
err = errors.New("Public key algorithm not supported")
|
||||
}
|
||||
|
||||
encrypted, _ := encryptKey(key, recipient)
|
||||
|
||||
info := RecipientInfo{
|
||||
KTRI: KeyTransRecipientInfo{
|
||||
Version: version,
|
||||
Rid: rid,
|
||||
KeyEncryptionAlgorithm: kea,
|
||||
EncryptedKey: encrypted,
|
||||
}}
|
||||
return info
|
||||
return
|
||||
}
|
||||
|
||||
func encryptKey(key []byte, recipient *x509.Certificate) ([]byte, error) {
|
||||
func encryptKeyRSA(key []byte, recipient *x509.Certificate) ([]byte, error) {
|
||||
if pub := recipient.PublicKey.(*rsa.PublicKey); pub != nil {
|
||||
return rsa.EncryptPKCS1v15(rand.Reader, pub, key)
|
||||
}
|
||||
|
@ -379,8 +379,12 @@ func (sd *SignedData) Verify(Opts x509.VerifyOptions, detached []byte) (chains [
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
err = cert.CheckSignature(signer.X509SignatureAlgorithm(), signedMessage, signer.Signature)
|
||||
var sigAlg x509.SignatureAlgorithm
|
||||
sigAlg, err = signer.X509SignatureAlgorithm()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
err = cert.CheckSignature(sigAlg, signedMessage, signer.Signature)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
@ -6,6 +6,7 @@ import (
|
||||
"crypto/x509"
|
||||
"crypto/x509/pkix"
|
||||
"encoding/asn1"
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
asn "github.com/InfiniteLoopSpace/go_S-MIME/asn1"
|
||||
@ -83,13 +84,18 @@ func (si SignerInfo) Hash() (crypto.Hash, error) {
|
||||
|
||||
// X509SignatureAlgorithm gets the x509.SignatureAlgorithm that should be used
|
||||
// for verifying this SignerInfo's signature.
|
||||
func (si SignerInfo) X509SignatureAlgorithm() x509.SignatureAlgorithm {
|
||||
func (si SignerInfo) X509SignatureAlgorithm() (sigAlg x509.SignatureAlgorithm, err error) {
|
||||
var (
|
||||
sigOID = si.SignatureAlgorithm.Algorithm.String()
|
||||
digestOID = si.DigestAlgorithm.Algorithm.String()
|
||||
)
|
||||
sigAlg, ok := oid.SignatureAlgorithms[sigOID][digestOID]
|
||||
|
||||
return oid.SignatureAlgorithms[sigOID][digestOID]
|
||||
if !ok {
|
||||
err = fmt.Errorf("Signature algorithm with OID %s in combination with digest with OID %s not supported", sigOID, digestOID)
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// GetContentTypeAttribute gets the signed ContentType attribute from the
|
||||
|
163
oid/key_wrap.go
Normal file
163
oid/key_wrap.go
Normal file
@ -0,0 +1,163 @@
|
||||
package oid
|
||||
|
||||
import (
|
||||
"crypto/aes"
|
||||
"crypto/cipher"
|
||||
"crypto/subtle"
|
||||
"crypto/x509/pkix"
|
||||
"encoding/asn1"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
)
|
||||
|
||||
// KeyWrap wraps and unwraps key with the key encrytion key (KEK) for a given (KeyWrapAlgorithm)
|
||||
type KeyWrap struct {
|
||||
KEK []byte
|
||||
KeyWrapAlgorithm asn1.ObjectIdentifier
|
||||
}
|
||||
|
||||
// Wrap wraps the content encryption key (cek)
|
||||
func (kw *KeyWrap) Wrap(cek []byte) (ciphertext []byte, err error) {
|
||||
|
||||
var block cipher.Block
|
||||
switch kw.KeyWrapAlgorithm.String() {
|
||||
case AES128Wrap.String(), AES192Wrap.String(), AES256Wrap.String():
|
||||
block, err = aes.NewCipher(kw.KEK)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
return Wrap(block, cek)
|
||||
|
||||
}
|
||||
|
||||
// UnWrap unwraps the encrypted key (encKey)
|
||||
func (kw *KeyWrap) UnWrap(encKey []byte) (cek []byte, err error) {
|
||||
|
||||
var block cipher.Block
|
||||
switch kw.KeyWrapAlgorithm.String() {
|
||||
case AES128Wrap.String(), AES192Wrap.String(), AES256Wrap.String():
|
||||
block, err = aes.NewCipher(kw.KEK)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
return Unwrap(block, encKey)
|
||||
|
||||
}
|
||||
|
||||
// KeyLen returns the key lenght of the key wrap algorithm
|
||||
func (kw *KeyWrap) KeyLen() (len int) {
|
||||
|
||||
switch kw.KeyWrapAlgorithm.String() {
|
||||
case AES128Wrap.String():
|
||||
len = 16
|
||||
case AES192Wrap.String():
|
||||
len = 24
|
||||
case AES256Wrap.String():
|
||||
len = 32
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// AlgorithmIdentifier returns the OID of the key wrap algorithm
|
||||
func (kw *KeyWrap) AlgorithmIdentifier() (algID pkix.AlgorithmIdentifier) {
|
||||
|
||||
switch kw.KeyWrapAlgorithm.String() {
|
||||
case AES128Wrap.String(), AES192Wrap.String(), AES256Wrap.String():
|
||||
algID = pkix.AlgorithmIdentifier{Algorithm: kw.KeyWrapAlgorithm}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// defaultIV from RFC-3394
|
||||
var defaultIV = []byte{0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6, 0xA6}
|
||||
|
||||
// Wrap encrypts the content encryption key (cek) with the given AES cipher (block), using the AES Key Wrap algorithm (RFC-3394)
|
||||
func Wrap(block cipher.Block, cek []byte) (encKey []byte, err error) {
|
||||
if len(cek)%8 != 0 {
|
||||
return nil, errors.New("Lenght of cek must be in 8-byte blocks")
|
||||
}
|
||||
|
||||
// 1. Initialize variables
|
||||
|
||||
// Set A = IV, an initial value (see 2.2.3)
|
||||
B := make([]byte, 16)
|
||||
copy(B, defaultIV)
|
||||
|
||||
// For i = 1 to n
|
||||
// R[i] = P[i]
|
||||
encKey = make([]byte, len(cek)+8)
|
||||
copy(encKey[8:], cek)
|
||||
|
||||
n := len(cek) / 8
|
||||
|
||||
// 2. Calculate intermediate values.
|
||||
for j := 0; j <= 5; j++ {
|
||||
for i := 1; i <= n; i++ {
|
||||
|
||||
// B = AES(K, A | R[i])
|
||||
copy(B[8:], encKey[i*8:(i+1)*8])
|
||||
block.Encrypt(B, B)
|
||||
|
||||
// A = MSB(64, B) ^ t where t = (n*j)+i
|
||||
t := uint64(n*j + i)
|
||||
b := binary.BigEndian.Uint64(B[:8]) ^ t
|
||||
binary.BigEndian.PutUint64(B[:8], b)
|
||||
|
||||
// R[i] = LSB(64, B)
|
||||
copy(encKey[i*8:(i+1)*8], B[8:])
|
||||
}
|
||||
}
|
||||
|
||||
// 3. Output the results.
|
||||
copy(encKey[:8], B[:8])
|
||||
return
|
||||
}
|
||||
|
||||
// Unwrap decrypts the provided encrypted key (encKey) with the given AES cipher (block), using the AES Key Wrap algorithm (RFC-3394).
|
||||
// Returns an error if validation fails.
|
||||
func Unwrap(block cipher.Block, encKey []byte) (cek []byte, err error) {
|
||||
if len(cek)%8 != 0 {
|
||||
return nil, errors.New("Length of encKey must multiple 8-bytes")
|
||||
}
|
||||
|
||||
//Initialize variables
|
||||
B := make([]byte, 16)
|
||||
copy(B, encKey[:8])
|
||||
|
||||
cek = make([]byte, len(encKey)-8)
|
||||
copy(cek, encKey[8:])
|
||||
|
||||
n := (len(encKey) / 8) - 1
|
||||
|
||||
//Compute intermediate values
|
||||
for j := 5; j >= 0; j-- {
|
||||
for i := n; i >= 1; i-- {
|
||||
|
||||
// B = AES-1(K, (A ^ t) | R[i]) where t = n*j+i
|
||||
copy(B[8:], cek[(i-1)*8:i*8])
|
||||
t := uint64(n*j + i)
|
||||
b := binary.BigEndian.Uint64(B[:8]) ^ t
|
||||
binary.BigEndian.PutUint64(B[:8], b)
|
||||
|
||||
block.Decrypt(B, B)
|
||||
|
||||
// A = MSB(64, B)
|
||||
// R[i] = LSB(64, B)
|
||||
copy(cek[(i-1)*8:i*8], B[8:])
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
if subtle.ConstantTimeCompare(B[:8], defaultIV) != 1 {
|
||||
return nil, errors.New("Integrity check failed - unexpected IV")
|
||||
}
|
||||
|
||||
//Output
|
||||
return
|
||||
}
|
51
oid/oid.go
51
oid/oid.go
@ -28,8 +28,13 @@ var (
|
||||
|
||||
// Signature Algorithm OIDs
|
||||
var (
|
||||
SignatureAlgorithmRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1}
|
||||
SignatureAlgorithmECDSA = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
|
||||
SignatureAlgorithmRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1}
|
||||
SignatureAlgorithmECDSA = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
|
||||
SignatureAlgorithmECDSAwithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 1}
|
||||
SignatureAlgorithmECDSAwithSHA224 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 1}
|
||||
SignatureAlgorithmECDSAwithSHA256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 2}
|
||||
SignatureAlgorithmECDSAwithSHA384 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 3}
|
||||
SignatureAlgorithmECDSAwithSHA512 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 4}
|
||||
)
|
||||
|
||||
// Public Key Encryption OIDs
|
||||
@ -51,6 +56,27 @@ var (
|
||||
SubjectKeyIdentifier = asn1.ObjectIdentifier{2, 5, 29, 14}
|
||||
)
|
||||
|
||||
// Elliptic curve public key OID
|
||||
var (
|
||||
ECPublicKey = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
|
||||
)
|
||||
|
||||
// DH Key Derivation Schemes OIDs
|
||||
var (
|
||||
DHSinglePassstdDHsha1kdfscheme = asn1.ObjectIdentifier{1, 3, 133, 16, 840, 63, 0, 2}
|
||||
DHSinglePassstdDHsha224kdfscheme = asn1.ObjectIdentifier{1, 3, 132, 1, 11, 0}
|
||||
DHSinglePassstdDHsha256kdfscheme = asn1.ObjectIdentifier{1, 3, 132, 1, 11, 1}
|
||||
DHSinglePassstdDHsha384kdfscheme = asn1.ObjectIdentifier{1, 3, 132, 1, 11, 2}
|
||||
DHSinglePassstdDHsha512kdfscheme = asn1.ObjectIdentifier{1, 3, 132, 1, 11, 3}
|
||||
)
|
||||
|
||||
// Key wrap algorithm OIDs
|
||||
var (
|
||||
AES128Wrap = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 5}
|
||||
AES192Wrap = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 25}
|
||||
AES256Wrap = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 45}
|
||||
)
|
||||
|
||||
// DigestAlgorithmToHash maps digest OIDs to crypto.Hash values.
|
||||
var DigestAlgorithmToHash = map[string]crypto.Hash{
|
||||
DigestAlgorithmSHA1.String(): crypto.SHA1,
|
||||
@ -113,6 +139,18 @@ var SignatureAlgorithms = map[string]map[string]x509.SignatureAlgorithm{
|
||||
DigestAlgorithmSHA384.String(): x509.ECDSAWithSHA384,
|
||||
DigestAlgorithmSHA512.String(): x509.ECDSAWithSHA512,
|
||||
},
|
||||
SignatureAlgorithmECDSAwithSHA1.String(): map[string]x509.SignatureAlgorithm{
|
||||
DigestAlgorithmSHA1.String(): x509.ECDSAWithSHA1,
|
||||
},
|
||||
SignatureAlgorithmECDSAwithSHA256.String(): map[string]x509.SignatureAlgorithm{
|
||||
DigestAlgorithmSHA256.String(): x509.ECDSAWithSHA256,
|
||||
},
|
||||
SignatureAlgorithmECDSAwithSHA384.String(): map[string]x509.SignatureAlgorithm{
|
||||
DigestAlgorithmSHA384.String(): x509.ECDSAWithSHA384,
|
||||
},
|
||||
SignatureAlgorithmECDSAwithSHA512.String(): map[string]x509.SignatureAlgorithm{
|
||||
DigestAlgorithmSHA512.String(): x509.ECDSAWithSHA512,
|
||||
},
|
||||
}
|
||||
|
||||
// PublicKeyAlgorithmToSignatureAlgorithm maps certificate public key
|
||||
@ -127,3 +165,12 @@ var PublicKeyAlgorithmToSignatureAlgorithm = map[x509.PublicKeyAlgorithm]pkix.Al
|
||||
var PublicKeyAlgorithmToEncrytionAlgorithm = map[x509.PublicKeyAlgorithm]pkix.AlgorithmIdentifier{
|
||||
x509.RSA: pkix.AlgorithmIdentifier{Algorithm: EncryptionAlgorithmRSA},
|
||||
}
|
||||
|
||||
// KDFHashAlgorithm key derivation schemes to its hash algorithms
|
||||
var KDFHashAlgorithm = map[string]crypto.Hash{
|
||||
DHSinglePassstdDHsha1kdfscheme.String(): crypto.SHA1,
|
||||
DHSinglePassstdDHsha224kdfscheme.String(): crypto.SHA224,
|
||||
DHSinglePassstdDHsha256kdfscheme.String(): crypto.SHA256,
|
||||
DHSinglePassstdDHsha384kdfscheme.String(): crypto.SHA384,
|
||||
DHSinglePassstdDHsha512kdfscheme.String(): crypto.SHA512,
|
||||
}
|
||||
|
@ -32,9 +32,10 @@ var (
|
||||
AEADChaCha20Poly1305 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 16, 3, 18}
|
||||
)
|
||||
|
||||
var symmetricKeyLen = map[string]int{
|
||||
EncryptionAlgorithmDESCBC.String(): 7,
|
||||
EncryptionAlgorithmDESEDE3CBC.String(): 21,
|
||||
// SymmetricKeyLen maps the encryption algorithm to its key length
|
||||
var SymmetricKeyLen = map[string]int{
|
||||
EncryptionAlgorithmDESCBC.String(): 8,
|
||||
EncryptionAlgorithmDESEDE3CBC.String(): 24,
|
||||
EncryptionAlgorithmAES128CBC.String(): 16,
|
||||
EncryptionAlgorithmAES256CBC.String(): 32,
|
||||
//AEAD
|
||||
@ -46,7 +47,7 @@ var symmetricKeyLen = map[string]int{
|
||||
func (e *EncryptionAlgorithm) Encrypt(plaintext []byte) (ciphertext []byte, err error) {
|
||||
|
||||
if e.Key == nil {
|
||||
e.Key = make([]byte, symmetricKeyLen[e.EncryptionAlgorithmIdentifier.String()])
|
||||
e.Key = make([]byte, SymmetricKeyLen[e.EncryptionAlgorithmIdentifier.String()])
|
||||
rand.Read(e.Key)
|
||||
}
|
||||
|
||||
@ -71,7 +72,7 @@ func (e *EncryptionAlgorithm) Encrypt(plaintext []byte) (ciphertext []byte, err
|
||||
switch e.EncryptionAlgorithmIdentifier.String() {
|
||||
case EncryptionAlgorithmAES128CBC.String(), EncryptionAlgorithmAES256CBC.String():
|
||||
if e.IV == nil {
|
||||
e.IV = make([]byte, len(e.Key))
|
||||
e.IV = make([]byte, blockCipher.BlockSize())
|
||||
rand.Read(e.IV)
|
||||
}
|
||||
|
||||
@ -180,7 +181,6 @@ func (e *EncryptionAlgorithm) Decrypt(ciphertext []byte) (plaintext []byte, err
|
||||
switch e.EncryptionAlgorithmIdentifier.String() {
|
||||
case EncryptionAlgorithmAES128CBC.String(), EncryptionAlgorithmAES256CBC.String(), EncryptionAlgorithmDESCBC.String(), EncryptionAlgorithmDESEDE3CBC.String():
|
||||
e.IV = e.ContentEncryptionAlgorithmIdentifier.Parameters.Bytes
|
||||
|
||||
blockMode = cipher.NewCBCDecrypter(blockCipher, e.IV)
|
||||
case EncryptionAlgorithmAES128GCM.String():
|
||||
aead, err = cipher.NewGCM(blockCipher)
|
||||
@ -198,7 +198,6 @@ func (e *EncryptionAlgorithm) Decrypt(ciphertext []byte) (plaintext []byte, err
|
||||
case EncryptionAlgorithmAES128CBC.String(), EncryptionAlgorithmAES256CBC.String(), EncryptionAlgorithmDESCBC.String(), EncryptionAlgorithmDESEDE3CBC.String():
|
||||
plaintext = make([]byte, len(ciphertext))
|
||||
blockMode.CryptBlocks(plaintext, ciphertext)
|
||||
|
||||
return unpad(plaintext, blockMode.BlockSize())
|
||||
case EncryptionAlgorithmAES128GCM.String(), AEADChaCha20Poly1305.String():
|
||||
var cipher []byte
|
||||
@ -247,6 +246,9 @@ func unpad(data []byte, blocklen int) ([]byte, error) {
|
||||
|
||||
// the last byte is the length of padding
|
||||
padlen := int(data[len(data)-1])
|
||||
if padlen > blocklen {
|
||||
return nil, fmt.Errorf("pad len %d is bigger than block len len %d", padlen, blocklen)
|
||||
}
|
||||
|
||||
// check padding integrity, all bytes should be the same
|
||||
pad := data[len(data)-padlen:]
|
||||
|
@ -4,26 +4,29 @@ package openssl
|
||||
import (
|
||||
"bytes"
|
||||
"crypto"
|
||||
"crypto/rsa"
|
||||
"crypto/x509"
|
||||
"encoding/pem"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"os/exec"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// SMIME is the commpand used for openssl smime, can be replaces with cms
|
||||
var SMIME = "smime"
|
||||
|
||||
//Encrypt a message with openssl
|
||||
func Encrypt(in []byte, cert *x509.Certificate, opts ...string) (der []byte, err error) {
|
||||
|
||||
tmp, err := ioutil.TempFile("", "example")
|
||||
defer os.Remove(tmp.Name())
|
||||
tmpKey, err := ioutil.TempFile("", "example")
|
||||
defer os.Remove(tmpKey.Name())
|
||||
|
||||
pem.Encode(tmp, &pem.Block{Type: "CERTIFICATE", Bytes: cert.Raw})
|
||||
pem.Encode(tmpKey, &pem.Block{Type: "CERTIFICATE", Bytes: cert.Raw})
|
||||
|
||||
param := []string{"smime", "-encrypt", "-aes128"}
|
||||
param := []string{SMIME, "-encrypt", "-aes128"}
|
||||
param = append(param, opts...)
|
||||
param = append(param, tmp.Name())
|
||||
param = append(param, tmpKey.Name())
|
||||
der, err = openssl(in, param...)
|
||||
|
||||
return
|
||||
@ -32,20 +35,24 @@ func Encrypt(in []byte, cert *x509.Certificate, opts ...string) (der []byte, err
|
||||
//Decrypt a message with openssl
|
||||
func Decrypt(in []byte, key crypto.PrivateKey, opts ...string) (plain []byte, err error) {
|
||||
|
||||
tmp, err := ioutil.TempFile("", "example")
|
||||
defer os.Remove(tmp.Name())
|
||||
tmpKey, err := ioutil.TempFile("", "example")
|
||||
defer os.Remove(tmpKey.Name())
|
||||
|
||||
pem.Encode(tmp, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key.(*rsa.PrivateKey))})
|
||||
keyDER, err := x509.MarshalPKCS8PrivateKey(key)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pem.Encode(tmpKey, &pem.Block{Type: "PRIVATE KEY", Bytes: keyDER})
|
||||
|
||||
param := []string{"smime", "-decrypt"}
|
||||
param := []string{SMIME, "-decrypt"}
|
||||
param = append(param, opts...)
|
||||
param = append(param, []string{"-decrypt", "-inkey", tmp.Name()}...)
|
||||
param = append(param, []string{"-inkey", tmpKey.Name()}...)
|
||||
plain, err = openssl(in, param...)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
//Create a detached signature with openssl
|
||||
// SignDetached creates a detached signature with openssl
|
||||
func SignDetached(in []byte, cert *x509.Certificate, key crypto.PrivateKey, interm []*x509.Certificate, opts ...string) (plain []byte, err error) {
|
||||
|
||||
tmpCert, err := ioutil.TempFile("", "example")
|
||||
@ -56,7 +63,11 @@ func SignDetached(in []byte, cert *x509.Certificate, key crypto.PrivateKey, inte
|
||||
tmpKey, err := ioutil.TempFile("", "example")
|
||||
defer os.Remove(tmpKey.Name())
|
||||
|
||||
pem.Encode(tmpKey, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key.(*rsa.PrivateKey))})
|
||||
keyDER, err := x509.MarshalPKCS8PrivateKey(key)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pem.Encode(tmpKey, &pem.Block{Type: "PRIVATE KEY", Bytes: keyDER})
|
||||
|
||||
tmpInterm, err := ioutil.TempFile("", "example")
|
||||
defer os.Remove(tmpInterm.Name())
|
||||
@ -65,7 +76,7 @@ func SignDetached(in []byte, cert *x509.Certificate, key crypto.PrivateKey, inte
|
||||
pem.Encode(tmpInterm, &pem.Block{Type: "CERTIFICATE", Bytes: i.Raw})
|
||||
}
|
||||
|
||||
param := []string{"smime", "-sign", "-nodetach"}
|
||||
param := []string{SMIME, "-sign", "-nodetach"}
|
||||
param = append(param, opts...)
|
||||
param = append(param, []string{"-signer", tmpCert.Name(), "-inkey", tmpKey.Name(), "-certfile", tmpInterm.Name()}...)
|
||||
plain, err = openssl(in, param...)
|
||||
@ -73,7 +84,7 @@ func SignDetached(in []byte, cert *x509.Certificate, key crypto.PrivateKey, inte
|
||||
return
|
||||
}
|
||||
|
||||
//Create a signature with openssl
|
||||
// Sign creates a signature with openssl
|
||||
func Sign(in []byte, cert *x509.Certificate, key crypto.PrivateKey, interm []*x509.Certificate, opts ...string) (plain []byte, err error) {
|
||||
|
||||
tmpCert, err := ioutil.TempFile("", "example")
|
||||
@ -84,7 +95,11 @@ func Sign(in []byte, cert *x509.Certificate, key crypto.PrivateKey, interm []*x5
|
||||
tmpKey, err := ioutil.TempFile("", "example")
|
||||
defer os.Remove(tmpKey.Name())
|
||||
|
||||
pem.Encode(tmpKey, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key.(*rsa.PrivateKey))})
|
||||
keyDER, err := x509.MarshalPKCS8PrivateKey(key)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
pem.Encode(tmpKey, &pem.Block{Type: "PRIVATE KEY", Bytes: keyDER})
|
||||
|
||||
tmpInterm, err := ioutil.TempFile("", "example")
|
||||
defer os.Remove(tmpInterm.Name())
|
||||
@ -93,7 +108,7 @@ func Sign(in []byte, cert *x509.Certificate, key crypto.PrivateKey, interm []*x5
|
||||
pem.Encode(tmpInterm, &pem.Block{Type: "CERTIFICATE", Bytes: i.Raw})
|
||||
}
|
||||
|
||||
param := []string{"smime", "-sign"}
|
||||
param := []string{SMIME, "-sign"}
|
||||
param = append(param, opts...)
|
||||
param = append(param, []string{"-signer", tmpCert.Name(), "-inkey", tmpKey.Name(), "-certfile", tmpInterm.Name()}...)
|
||||
plain, err = openssl(in, param...)
|
||||
@ -109,7 +124,7 @@ func Verify(in []byte, ca *x509.Certificate, opts ...string) (plain []byte, err
|
||||
|
||||
pem.Encode(tmpCA, &pem.Block{Type: "CERTIFICATE", Bytes: ca.Raw})
|
||||
|
||||
param := []string{"smime", "-verify"}
|
||||
param := []string{SMIME, "-verify"}
|
||||
param = append(param, opts...)
|
||||
param = append(param, []string{"-CAfile", tmpCA.Name()}...)
|
||||
plain, err = openssl(in, param...)
|
||||
@ -117,6 +132,11 @@ func Verify(in []byte, ca *x509.Certificate, opts ...string) (plain []byte, err
|
||||
return
|
||||
}
|
||||
|
||||
// Openssl runs the openssl command with given args
|
||||
func Openssl(stdin []byte, args ...string) ([]byte, error) {
|
||||
return openssl(stdin, args...)
|
||||
}
|
||||
|
||||
func openssl(stdin []byte, args ...string) ([]byte, error) {
|
||||
cmd := exec.Command("openssl", args...)
|
||||
|
||||
@ -133,5 +153,9 @@ func openssl(stdin []byte, args ...string) ([]byte, error) {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if strings.Contains(errs.String(), "Error") {
|
||||
return nil, fmt.Errorf("error running %s (%s):\n ", cmd.Args, errs.String())
|
||||
}
|
||||
|
||||
return out.Bytes(), nil
|
||||
}
|
||||
|
@ -234,7 +234,7 @@ Y0ZB9qANMAsGA1UdDzEEAwIAEA==
|
||||
-----END PRIVATE KEY-----`
|
||||
|
||||
//https://github.com/fullsailor/pkcs7/issues/9
|
||||
func TestiTunesReceipt(t *testing.T) {
|
||||
func TestSampleiTunesReceipt(t *testing.T) {
|
||||
|
||||
b, err := base64.StdEncoding.DecodeString(strings.TrimSpace(iTunesReceipt))
|
||||
if err != nil {
|
||||
|
Loading…
Reference in New Issue
Block a user