Renamed SignedInfo to MetaInfo (except for encoding binary XML).
diff --git a/ndn-cpp/security/key-chain.hpp b/ndn-cpp/security/key-chain.hpp
index 0d3873e..584ddc4 100644
--- a/ndn-cpp/security/key-chain.hpp
+++ b/ndn-cpp/security/key-chain.hpp
@@ -13,10 +13,10 @@
class KeyChain {
public:
/**
- * In data, set the signed info publisher public key digest and key locator key to the public key and set the
+ * In data, set the meta info publisher public key digest and key locator key to the public key and set the
* signature using the private key.
* Note: the caller must make sure the timestamp is correct, for example with
- * data.getSignedInfo().setTimestampMilliseconds(time(NULL) * 1000.0).
+ * data.getMetaInfo().setTimestampMilliseconds(time(NULL) * 1000.0).
* @param data The Data object to sign and set the key and signature.
* @param publicKeyDer A pointer to a buffer with the DER-encoded public key.
* @param publicKeyDerLength The number of bytes in publicKeyDer.