diff --git a/ndn-cpp/Interest.hpp b/ndn-cpp/Interest.hpp
index a1f045f..f5a59ea 100644
--- a/ndn-cpp/Interest.hpp
+++ b/ndn-cpp/Interest.hpp
@@ -42,6 +42,8 @@
 
   Name &getName() { return name_; }
   
+  int getInterestLifetime() { return interestLifetime_; }
+  
   /**
    * Clear this interest, and set the values by copying from the interest struct.
    * @param interestStruct a C ndn_Interest struct
diff --git a/ndn-cpp/c/encoding/BinaryXMLInterest.c b/ndn-cpp/c/encoding/BinaryXMLInterest.c
index 0eea400..96077d3 100644
--- a/ndn-cpp/c/encoding/BinaryXMLInterest.c
+++ b/ndn-cpp/c/encoding/BinaryXMLInterest.c
@@ -6,9 +6,80 @@
 
 #include "BinaryXMLEncoder.h"
 #include "BinaryXMLDecoder.h"
+#include "BinaryXMLName.h"
 #include "BinaryXMLInterest.h"
 
-char *ndn_decodeBinaryXMLInterest(struct ndn_Interest *interest, unsigned char *input, unsigned int inputLength)
+char *ndn_decodeBinaryXMLInterest(struct ndn_Interest *interest, struct ndn_BinaryXMLDecoder *decoder)
 {
+  char *error;
+  if (error = ndn_BinaryXMLDecoder_readElementStartDTag(decoder, ndn_BinaryXML_DTag_Interest))
+    return error;
+    
+  if (error = ndn_decodeBinaryXMLName(&interest->name, decoder))
+    return error;
+       
+  if (error = ndn_BinaryXMLDecoder_readOptionalUnsignedIntegerDTagElement
+      (decoder, ndn_BinaryXML_DTag_MinSuffixComponents, &interest->minSuffixComponents))
+    return error;
+  if (error = ndn_BinaryXMLDecoder_readOptionalUnsignedIntegerDTagElement
+      (decoder, ndn_BinaryXML_DTag_MaxSuffixComponents, &interest->maxSuffixComponents))
+    return error;
   
+  int gotExpectedTag;
+  if (error = ndn_BinaryXMLDecoder_peekDTag(decoder, ndn_BinaryXML_DTag_PublisherPublicKeyDigest, &gotExpectedTag))
+    return error;
+  if (gotExpectedTag) {
+    if (error = ndn_BinaryXMLDecoder_readBinaryDTagElement
+        (decoder, ndn_BinaryXML_DTag_PublisherPublicKeyDigest, 0, &interest->publisherPublicKeyDigest,
+         &interest->publisherPublicKeyDigestLength))
+      return error;
+  }
+  else {
+    interest->publisherPublicKeyDigest = 0;
+    interest->publisherPublicKeyDigestLength = 0;
+  }
+  
+  // TODO: Implement exclude
+  
+  if (error = ndn_BinaryXMLDecoder_readOptionalUnsignedIntegerDTagElement
+      (decoder, ndn_BinaryXML_DTag_ChildSelector, &interest->childSelector))
+    return error;
+  if (error = ndn_BinaryXMLDecoder_readOptionalUnsignedIntegerDTagElement
+      (decoder, ndn_BinaryXML_DTag_AnswerOriginKind, &interest->answerOriginKind))
+    return error;
+  if (error = ndn_BinaryXMLDecoder_readOptionalUnsignedIntegerDTagElement
+      (decoder, ndn_BinaryXML_DTag_Scope, &interest->scope))
+    return error;
+  
+  if (error = ndn_BinaryXMLDecoder_peekDTag(decoder, ndn_BinaryXML_DTag_InterestLifetime, &gotExpectedTag))
+    return error;
+  if (gotExpectedTag) {
+    unsigned char *interestLifetime;
+    unsigned int interestLifetimeLength;
+    if (error = ndn_BinaryXMLDecoder_readBinaryDTagElement
+        (decoder, ndn_BinaryXML_DTag_InterestLifetime, 0, &interestLifetime, &interestLifetimeLength))
+      return error;
+    
+    interest->interestLifetime = 1000 * 
+      ndn_BinaryXMLDecoder_bigEndianToUnsignedInt(interestLifetime, interestLifetimeLength) / 4096;
+  }
+  else
+    interest->interestLifetime = -1;
+  
+  if (error = ndn_BinaryXMLDecoder_peekDTag(decoder, ndn_BinaryXML_DTag_Nonce, &gotExpectedTag))
+    return error;
+  if (gotExpectedTag) {
+    if (error = ndn_BinaryXMLDecoder_readBinaryDTagElement
+        (decoder, ndn_BinaryXML_DTag_Nonce, 0, &interest->nonce, &interest->nonceLength))
+      return error;
+  }
+  else {
+    interest->nonce = 0;
+    interest->nonceLength = 0;
+  }
+
+  if (error = ndn_BinaryXMLDecoder_readElementClose(decoder))
+    return error;
+  
+  return 0;
 }
\ No newline at end of file