From 162af316d39f1bf526e3dc63e67dd6ae6f7be91b Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Tue, 27 Jan 2015 22:05:31 +0100
Subject: cleaning up types used some more: also use a new struct for the
 transfer key secret

---
 src/include/taler_util.h | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

(limited to 'src/include/taler_util.h')

diff --git a/src/include/taler_util.h b/src/include/taler_util.h
index 19e6bacf..2c5faaa5 100644
--- a/src/include/taler_util.h
+++ b/src/include/taler_util.h
@@ -240,6 +240,20 @@ TALER_data_to_string_alloc (const void *buf,
 
 /* ****************** Refresh crypto primitives ************* */
 
+/**
+ * Secret used to decrypt the key to decrypt link secrets.
+ */
+struct TALER_TransferSecret
+{
+  /**
+   * Secret used to encrypt/decrypt the `struct TALER_LinkSecret`.
+   * Must be (currently) a hash as this is what
+   * #GNUNET_CRYPTO_ecc_ecdh() returns to us.
+   */
+  struct GNUNET_HashCode key;
+};
+
+
 /**
  * Secret used to decrypt refresh links.
  */
@@ -312,15 +326,14 @@ struct TALER_RefreshLinkDecrypted
  * 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_enc encrypted secret
+ * @param trans_sec transfer secret
  * @param secret shared secret for refresh link decryption
- *               (FIXME: use different type?)
  * @return #GNUNET_OK on success
  */
 int
 TALER_transfer_decrypt (const struct TALER_EncryptedLinkSecret *secret_enc,
-                        const struct GNUNET_HashCode *trans_sec,
+                        const struct TALER_TransferSecret *trans_sec,
                         struct TALER_LinkSecret *secret);
 
 
@@ -329,13 +342,13 @@ TALER_transfer_decrypt (const struct TALER_EncryptedLinkSecret *secret_enc,
  * to obtain the @a secret_enc.
  *
  * @param secret shared secret for refresh link decryption
- * @param trans_sec transfer secret (FIXME: use different type?)
+ * @param trans_sec transfer secret
  * @param secret_enc[out] encrypted secret
  * @return #GNUNET_OK on success
  */
 int
 TALER_transfer_encrypt (const struct TALER_LinkSecret *secret,
-                        const struct GNUNET_HashCode *trans_sec,
+                        const struct TALER_TransferSecret *trans_sec,
                         struct TALER_EncryptedLinkSecret *secret_enc);
 
 
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