[libeufin] branch master updated: decrypt result from bank

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marcello pushed a commit to branch master
in repository libeufin.

The following commit(s) were added to refs/heads/master by this push:
     new 6cb403f  decrypt result from bank
6cb403f is described below

commit 6cb403f8e8caa481c475f42006e9bbd115f88e30
Author: Marcello Stanisci <address@hidden>
AuthorDate: Thu Nov 7 20:59:48 2019 +0100

    decrypt result from bank
---
 nexus/src/main/kotlin/Main.kt                      | 22 +++++++++++++++++++---
 .../kotlin/tech/libeufin/sandbox/CryptoUtil.kt     |  2 +-
 2 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/nexus/src/main/kotlin/Main.kt b/nexus/src/main/kotlin/Main.kt
index 03016ec..ae2a7a8 100644
--- a/nexus/src/main/kotlin/Main.kt
+++ b/nexus/src/main/kotlin/Main.kt
@@ -322,7 +322,7 @@ fun main() {
                 // _parse_ response!
                 // respond to client
                 val id = expectId(call.parameters["id"])
-                val (url, body) = transaction {
+                val (url, body, encPriv) = transaction {
                     val subscriber = EbicsSubscriberEntity.findById(id) ?: 
throw SubscriberNotFoundError(HttpStatusCode.NotFound)
                     val hpbRequest = EbicsNpkdRequest().apply {
                         version = "H004"
@@ -351,10 +351,26 @@ fun main() {
                         hpbDoc,
                         
CryptoUtil.loadRsaPrivateKey(subscriber.signaturePrivateKey.toByteArray())
                     )
-                    Pair(subscriber.ebicsURL, hpbDoc)
+                    Triple(subscriber.ebicsURL, hpbDoc, 
subscriber.encryptionPrivateKey)
                 }
 
-                val response = 
client.postToBank<EbicsKeyManagementResponse>(url, body)
+                val response = 
client.postToBank<EbicsKeyManagementResponse>(url, body) ?: throw 
UnreachableBankError(
+                    HttpStatusCode.InternalServerError
+                )
+
+                if (response.value.body.returnCode.value != "000000") {
+                    throw EbicsError(response.value.body.returnCode.value)
+                }
+
+                val er = CryptoUtil.EncryptionResult(
+                    
response.value.body.dataTransfer!!.dataEncryptionInfo!!.transactionKey,
+                    (response.value.body.dataTransfer!!.dataEncryptionInfo as 
EbicsTypes.DataEncryptionInfo)
+                        .encryptionPubKeyDigest.value,
+                    (response.value.body.dataTransfer as 
EbicsKeyManagementResponse.OrderData).value
+                )
+
+                var dataCompr = CryptoUtil.decryptEbicsE002(er, 
CryptoUtil.loadRsaPrivateKey(encPriv.toByteArray()))
+                var data = 
EbicsOrderUtil.decodeOrderDataXml<HPBResponseOrderData>(dataCompr)
 
                 call.respond(HttpStatusCode.NotImplemented, NexusError("work 
in progress"))
                 return@post
diff --git a/sandbox/src/main/kotlin/tech/libeufin/sandbox/CryptoUtil.kt 
b/sandbox/src/main/kotlin/tech/libeufin/sandbox/CryptoUtil.kt
index db4eee5..93be1be 100644
--- a/sandbox/src/main/kotlin/tech/libeufin/sandbox/CryptoUtil.kt
+++ b/sandbox/src/main/kotlin/tech/libeufin/sandbox/CryptoUtil.kt
@@ -43,7 +43,7 @@ import javax.crypto.spec.SecretKeySpec
 data class RsaCrtKeyPair(val private: RSAPrivateCrtKey, val public: 
RSAPublicKey)
 
 /**
- * Helpers for dealing with crypographic operations in EBICS / LibEuFin.
+ * Helpers for dealing with cryptographic operations in EBICS / LibEuFin.
  */
 class CryptoUtil {
 

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