From 019af0919e3fbe2f831f92728fd95eb7ea505da9 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Tue, 27 Jan 2015 18:49:02 +0100
Subject: mint-httpd_db.c now compiles again

---
 src/util/crypto.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

(limited to 'src/util')

diff --git a/src/util/crypto.c b/src/util/crypto.c
index b4a4a718b..930c43a7f 100644
--- a/src/util/crypto.c
+++ b/src/util/crypto.c
@@ -83,6 +83,33 @@ derive_refresh_key (const struct GNUNET_HashCode *secret,
 }
 
 
+/**
+ * Use the @a trans_sec (from ECDHE) to decrypt the @a secret_enc
+ * to obtain the @a secret to decrypt the linkage data.
+ *
+ * @param secret_enc encrypted secret (FIXME: use different type!)
+ * @param trans_sec transfer secret (FIXME: use different type?)
+ * @param secret shared secret for refresh link decryption
+ *               (FIXME: use different type?)
+ * @return #GNUNET_OK on success
+ */
+int
+TALER_transfer_decrypt (const struct GNUNET_HashCode *secret_enc,
+                        const struct GNUNET_HashCode *trans_sec,
+                        struct GNUNET_HashCode *secret)
+{
+  struct GNUNET_CRYPTO_SymmetricInitializationVector iv;
+  struct GNUNET_CRYPTO_SymmetricSessionKey skey;
+
+  derive_refresh_key (trans_sec, &iv, &skey);
+  return GNUNET_CRYPTO_symmetric_decrypt (secret_enc,
+                                          sizeof (struct GNUNET_HashCode),
+                                          &skey,
+                                          &iv,
+                                          secret);
+}
+
+
 /**
  * Decrypt refresh link information.
  *
-- 
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