Opentimestamps - Java NullPointerException when trying to deserialize OTS file
0
When I try to verify a timestamp using the Java library, I am running into a Java NullPointerException.
I'm following the examples in the README of https://github.com/opentimestamps/java-opentimestamps
This is my code:
byte originalFile = Files.readAllBytes(fileData.get("absoluteFilePath"));
byte originalBytes = new String(originalFile).getBytes("UTF-8");
String originalHex = DatatypeConverter.printHexBinary(originalBytes);
byte otsFile = Files.readAllBytes(fileData.get("otsFilePath"));
byte otsBytes = new String(otsFile).getBytes("UTF-8");
String otsHex = DatatypeConverter.printHexBinary(otsBytes);
// below is from the examples...
DetachedTimestampFile detached = DetachedTimestampFile.from( new OpSHA256(), originalFile );
DetachedTimestampFile detachedOts = DetachedTimestampFile.deserialize(ots);
HashMap<Chains, VerifyResult> result = OpenTimestamps.verify(detachedOts,detached);
And this the exception:
java.lang.NullPointerException: null
at com.eternitywall.ots.Timestamp.doTagOrAttestation(Timestamp.java:101) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.Timestamp.deserialize(Timestamp.java:89) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.DetachedTimestampFile.deserialize(DetachedTimestampFile.java:107) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.DetachedTimestampFile.deserialize(DetachedTimestampFile.java:120) ~[java-opentimestamps-1.16.jar:na]
at com.fmr.ots.FileTimestampController.verifyDocument(FileTimestampController.java:110) ~[classes/:na]
Does anyone know how to correctly read the original file and ots file in order to correctly verify the file?
java blockchain bitcoin
asked Nov 15 '18 at 11:03
simbrosimbro
564826
add a comment |
0
When I try to verify a timestamp using the Java library, I am running into a Java NullPointerException.
I'm following the examples in the README of https://github.com/opentimestamps/java-opentimestamps
This is my code:
byte originalFile = Files.readAllBytes(fileData.get("absoluteFilePath"));
byte originalBytes = new String(originalFile).getBytes("UTF-8");
String originalHex = DatatypeConverter.printHexBinary(originalBytes);
byte otsFile = Files.readAllBytes(fileData.get("otsFilePath"));
byte otsBytes = new String(otsFile).getBytes("UTF-8");
String otsHex = DatatypeConverter.printHexBinary(otsBytes);
// below is from the examples...
DetachedTimestampFile detached = DetachedTimestampFile.from( new OpSHA256(), originalFile );
DetachedTimestampFile detachedOts = DetachedTimestampFile.deserialize(ots);
HashMap<Chains, VerifyResult> result = OpenTimestamps.verify(detachedOts,detached);
And this the exception:
java.lang.NullPointerException: null
at com.eternitywall.ots.Timestamp.doTagOrAttestation(Timestamp.java:101) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.Timestamp.deserialize(Timestamp.java:89) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.DetachedTimestampFile.deserialize(DetachedTimestampFile.java:107) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.DetachedTimestampFile.deserialize(DetachedTimestampFile.java:120) ~[java-opentimestamps-1.16.jar:na]
at com.fmr.ots.FileTimestampController.verifyDocument(FileTimestampController.java:110) ~[classes/:na]
Does anyone know how to correctly read the original file and ots file in order to correctly verify the file?
java blockchain bitcoin
asked Nov 15 '18 at 11:03
simbrosimbro
564826
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 '18 at 13:22
Thanks Progman - though I don't see how it relates to my problem - the parameters I'm passing to the Opentimestamps class is not a null pointer.
– simbro
Nov 15 '18 at 15:27
Please edit your question to include a MCVE which can be compiled and tested by others, which will throw the NullPointerException you get.
– Progman
Nov 15 '18 at 15:33
add a comment |
0
0
0
When I try to verify a timestamp using the Java library, I am running into a Java NullPointerException.
I'm following the examples in the README of https://github.com/opentimestamps/java-opentimestamps
This is my code:
byte originalFile = Files.readAllBytes(fileData.get("absoluteFilePath"));
byte originalBytes = new String(originalFile).getBytes("UTF-8");
String originalHex = DatatypeConverter.printHexBinary(originalBytes);
byte otsFile = Files.readAllBytes(fileData.get("otsFilePath"));
byte otsBytes = new String(otsFile).getBytes("UTF-8");
String otsHex = DatatypeConverter.printHexBinary(otsBytes);
// below is from the examples...
DetachedTimestampFile detached = DetachedTimestampFile.from( new OpSHA256(), originalFile );
DetachedTimestampFile detachedOts = DetachedTimestampFile.deserialize(ots);
HashMap<Chains, VerifyResult> result = OpenTimestamps.verify(detachedOts,detached);
And this the exception:
java.lang.NullPointerException: null
at com.eternitywall.ots.Timestamp.doTagOrAttestation(Timestamp.java:101) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.Timestamp.deserialize(Timestamp.java:89) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.DetachedTimestampFile.deserialize(DetachedTimestampFile.java:107) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.DetachedTimestampFile.deserialize(DetachedTimestampFile.java:120) ~[java-opentimestamps-1.16.jar:na]
at com.fmr.ots.FileTimestampController.verifyDocument(FileTimestampController.java:110) ~[classes/:na]
Does anyone know how to correctly read the original file and ots file in order to correctly verify the file?
java blockchain bitcoin
asked Nov 15 '18 at 11:03
simbrosimbro
564826
When I try to verify a timestamp using the Java library, I am running into a Java NullPointerException.
I'm following the examples in the README of https://github.com/opentimestamps/java-opentimestamps
This is my code:
byte originalFile = Files.readAllBytes(fileData.get("absoluteFilePath"));
byte originalBytes = new String(originalFile).getBytes("UTF-8");
String originalHex = DatatypeConverter.printHexBinary(originalBytes);
byte otsFile = Files.readAllBytes(fileData.get("otsFilePath"));
byte otsBytes = new String(otsFile).getBytes("UTF-8");
String otsHex = DatatypeConverter.printHexBinary(otsBytes);
// below is from the examples...
DetachedTimestampFile detached = DetachedTimestampFile.from( new OpSHA256(), originalFile );
DetachedTimestampFile detachedOts = DetachedTimestampFile.deserialize(ots);
HashMap<Chains, VerifyResult> result = OpenTimestamps.verify(detachedOts,detached);
And this the exception:
java.lang.NullPointerException: null
at com.eternitywall.ots.Timestamp.doTagOrAttestation(Timestamp.java:101) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.Timestamp.deserialize(Timestamp.java:89) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.DetachedTimestampFile.deserialize(DetachedTimestampFile.java:107) ~[java-opentimestamps-1.16.jar:na]
at com.eternitywall.ots.DetachedTimestampFile.deserialize(DetachedTimestampFile.java:120) ~[java-opentimestamps-1.16.jar:na]
at com.fmr.ots.FileTimestampController.verifyDocument(FileTimestampController.java:110) ~[classes/:na]
Does anyone know how to correctly read the original file and ots file in order to correctly verify the file?
java blockchain bitcoin
java blockchain bitcoin
asked Nov 15 '18 at 11:03
simbrosimbro
564826
asked Nov 15 '18 at 11:03
simbrosimbro
564826
asked Nov 15 '18 at 11:03
simbrosimbro
564826
asked Nov 15 '18 at 11:03
simbrosimbro
564826
asked Nov 15 '18 at 11:03
simbrosimbro
564826
564826
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 '18 at 13:22
Thanks Progman - though I don't see how it relates to my problem - the parameters I'm passing to the Opentimestamps class is not a null pointer.
– simbro
Nov 15 '18 at 15:27
Please edit your question to include a MCVE which can be compiled and tested by others, which will throw the NullPointerException you get.
– Progman
Nov 15 '18 at 15:33
add a comment |
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 '18 at 13:22
Thanks Progman - though I don't see how it relates to my problem - the parameters I'm passing to the Opentimestamps class is not a null pointer.
– simbro
Nov 15 '18 at 15:27
Please edit your question to include a MCVE which can be compiled and tested by others, which will throw the NullPointerException you get.
– Progman
Nov 15 '18 at 15:33
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 '18 at 13:22
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 '18 at 13:22
Thanks Progman - though I don't see how it relates to my problem - the parameters I'm passing to the Opentimestamps class is not a null pointer.
– simbro
Nov 15 '18 at 15:27
Thanks Progman - though I don't see how it relates to my problem - the parameters I'm passing to the Opentimestamps class is not a null pointer.
– simbro
Nov 15 '18 at 15:27
Please edit your question to include a MCVE which can be compiled and tested by others, which will throw the NullPointerException you get.
– Progman
Nov 15 '18 at 15:33
Please edit your question to include a MCVE which can be compiled and tested by others, which will throw the NullPointerException you get.
– Progman
Nov 15 '18 at 15:33
add a comment |
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Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 '18 at 13:22
Thanks Progman - though I don't see how it relates to my problem - the parameters I'm passing to the Opentimestamps class is not a null pointer.
– simbro
Nov 15 '18 at 15:27
Please edit your question to include a MCVE which can be compiled and tested by others, which will throw the NullPointerException you get.
– Progman
Nov 15 '18 at 15:33