convert to ED25519 to pem

Signed-off-by: mineme0110 <shailesh.patil@iohk.io>
hyperledger · May 9, 2024 · b7bb36a · b7bb36a
1 parent 800dca9
commit b7bb36a
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Showing 2 changed files with 14 additions and 2 deletions.
diff --git a/...re/src/main/scala/org/hyperledger/identus/pollux/core/service/CredentialServiceImpl.scala b/...re/src/main/scala/org/hyperledger/identus/pollux/core/service/CredentialServiceImpl.scala
@@ -1298,8 +1298,7 @@ private class CredentialServiceImpl(
         )
       preview = offerCredentialData.body.credential_preview
       claims <- CredentialService.convertAttributesToJsonClaims(preview.body.attributes)
-      // FIXME convert to pem format String
-      sdJwtPrivateKey = SDJWTPrivateKey.fromPem(jwtIssuerKeys.privateKey.toString())
+      sdJwtPrivateKey = SDJWTPrivateKey.fromPem(SDJWT.convertED25519PrivateKeyToPEM(jwtIssuerKeys.privateKey.getEncoded))
       credential = SDJWT.issueCredential(sdJwtPrivateKey, claims.asJson.noSpaces)
 
       issueCredential = IssueCredential.build(

diff --git a/pollux/sd-jwt/src/main/scala/org/hyperledger/identus/pollux/sdjwt/SDJWT.scala b/pollux/sd-jwt/src/main/scala/org/hyperledger/identus/pollux/sdjwt/SDJWT.scala
@@ -68,4 +68,17 @@ object SDJWT {
     val result: Boolean = verifier.verify(claims)
     result
   }
+  //FIXME
+  def convertED25519PrivateKeyToPEM(encodedKey: Array[Byte]): String = {
+    import java.util.Base64
+    import java.security.KeyFactory
+    import java.security.spec.PKCS8EncodedKeySpec
+    import java.security.PrivateKey
+    val keySpec = new PKCS8EncodedKeySpec(encodedKey)
+    val keyFactory = KeyFactory.getInstance("Ed25519")
+    val privateKey: PrivateKey = keyFactory.generatePrivate(keySpec)
+    val encoded = Base64.getMimeEncoder.encodeToString(privateKey.getEncoded)
+    val pemKey = s"-----BEGIN PRIVATE KEY-----\n${encoded.grouped(64).mkString("\n")}\n-----END PRIVATE KEY-----"
+    pemKey
+  }
 }