Opentimestamps - Java NullPointerException when trying to deserialize OTS file
up vote
0
down vote
favorite
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 at 11:03
simbro
507626
add a comment |
up vote
0
down vote
favorite
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 at 11:03
simbro
507626
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 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 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 at 15:33
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
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 at 11:03
simbro
507626
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 at 11:03
simbro
507626
asked Nov 15 at 11:03
simbro
507626
asked Nov 15 at 11:03
simbro
507626
asked Nov 15 at 11:03
simbro
507626
asked Nov 15 at 11:03
simbro
507626
507626
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 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 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 at 15:33
add a comment |
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 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 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 at 15:33
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 at 13:22
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 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 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 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 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 at 15:33
add a comment |
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53318027%2fopentimestamps-java-nullpointerexception-when-trying-to-deserialize-ots-file%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Possible duplicate of What is a NullPointerException, and how do I fix it?
– Progman
Nov 15 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 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 at 15:33