Changeset 39 for trunk/lib

Timestamp:

06/10/06 13:13:13 (2 years ago)

Author:

nahi

Message:

added Signature#verify.

Files:

• trunk/lib/pgp/packet/signature.rb (modified) (1 diff)

trunk/lib/pgp/packet/signature.rb

@@ -105 +105 @@
-  def unhashedsubpacket
-    @unhashedsubpacket
+  end
+
+  def verify(pubkey, target)
+    packed_decoded_hash = MPI.to_bytes(pubkey.decrypt(@signature))
+    decoded_hash = PKeyAlgorithm.decode_hash(@pkey_algorithm, pubkey.nbits, 
+      @hash_algorithm, packed_decoded_hash)
+
+    hashed_body = dump_version + dump_signature_type + dump_pkey_algorithm +
+      dump_hash_algorithm + dump_hashedsubpacket
+    calced_hash = calc_hash(target + dump_hash_magic(hashed_body))
+
+    decoded_hash == calced_hash
-  end
-