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authorKiran Kamineni <kiran.k.kamineni@intel.com>2018-03-21 17:16:13 -0700
committerKiran Kamineni <kiran.k.kamineni@intel.com>2018-03-21 17:18:53 -0700
commita02a75b47cd9850c3f9be17186a21316ac880184 (patch)
tree51166ff264b2ab869857e98a0314c71741134828 /sms-service/src
parent6e8ef8ac3a9f9504ff4a5ea9991197010930d834 (diff)
Adding PGP decrypt to auth package
Adding PGP decrypt function to auth. This can be used by quorum client in its code for decryption Issue-ID: AAF-165 Change-Id: I6d236c3164ccb93c11527ac8c2e725987236f9f0 Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>
Diffstat (limited to 'sms-service/src')
-rw-r--r--sms-service/src/sms/auth/auth.go36
1 files changed, 36 insertions, 0 deletions
diff --git a/sms-service/src/sms/auth/auth.go b/sms-service/src/sms/auth/auth.go
index 341f377..ad5afdc 100644
--- a/sms-service/src/sms/auth/auth.go
+++ b/sms-service/src/sms/auth/auth.go
@@ -22,6 +22,7 @@ import (
"crypto/x509"
"encoding/base64"
"golang.org/x/crypto/openpgp"
+ "golang.org/x/crypto/openpgp/packet"
"io/ioutil"
smslogger "sms/log"
@@ -93,3 +94,38 @@ func GeneratePGPKeyPair() (string, string, error) {
return pbkey, prkey, nil
}
+
+// DecryptPGPBytes decrypts a PGP encoded input string and returns
+// a base64 representation of the decoded string
+func DecryptPGPBytes(data string, prKey string) (string, error) {
+ // Convert private key to bytes from base64
+ prKeyBytes, err := base64.StdEncoding.DecodeString(prKey)
+ if err != nil {
+ smslogger.WriteError("Error Decoding base64 private key: " + err.Error())
+ return "", err
+ }
+
+ dataBytes, err := base64.StdEncoding.DecodeString(data)
+ if err != nil {
+ smslogger.WriteError("Error Decoding base64 data: " + err.Error())
+ return "", err
+ }
+
+ prEntity, err := openpgp.ReadEntity(packet.NewReader(bytes.NewBuffer(prKeyBytes)))
+ if err != nil {
+ smslogger.WriteError("Error reading entity from PGP key: " + err.Error())
+ return "", err
+ }
+
+ prEntityList := &openpgp.EntityList{prEntity}
+ message, err := openpgp.ReadMessage(bytes.NewBuffer(dataBytes), prEntityList, nil, nil)
+ if err != nil {
+ smslogger.WriteError("Error Decrypting message: " + err.Error())
+ return "", err
+ }
+
+ var retBuf bytes.Buffer
+ retBuf.ReadFrom(message.UnverifiedBody)
+
+ return retBuf.String(), nil
+}