timestamp

问题 I am a software developer in charge of a project to digitally sign text files with PCKS#7. There is a third party in charge of analysing the signed file to tell us if it's correct or not. The issue I'm having is that they say the signer info does not contain a timestamp. They assured me I do not need to hire an outside trusted server for the timestamp, that the server's timestamp would be enough. I have scoured the internet and came up with the following code to try and add the timestamp but

问题 I am a software developer in charge of a project to digitally sign text files with PCKS#7. There is a third party in charge of analysing the signed file to tell us if it's correct or not. The issue I'm having is that they say the signer info does not contain a timestamp. They assured me I do not need to hire an outside trusted server for the timestamp, that the server's timestamp would be enough. I have scoured the internet and came up with the following code to try and add the timestamp but

问题 I am a software developer in charge of a project to digitally sign text files with PCKS#7. There is a third party in charge of analysing the signed file to tell us if it's correct or not. The issue I'm having is that they say the signer info does not contain a timestamp. They assured me I do not need to hire an outside trusted server for the timestamp, that the server's timestamp would be enough. I have scoured the internet and came up with the following code to try and add the timestamp but

问题 This question already has an answer here : Cast column containing multiple string date formats to DateTime in Spark (1 answer) Closed 6 days ago . I have a pyspark dataframe that has a timestamp field. But it contains two types of timestamp format (both are strings). +----------------------+ | timestamp | +---------------------+ | 06-06-2019,17:15:46| +---------------------+ |2020-01-01T06:07:22.000Z How can I create another "date"column in the same pyspark dataframe that captures only the

问题 This question is the continuation of that one. I also try to communicate with a 3rd party AS2 server. I use the same code as the author of that post. This code (the corrected version) is: private byte[] Sign(byte[] content) { CmsSigner cmsSigner = new CmsSigner(_cert); cmsSigner.SignedAttributes.Add(new Pkcs9SigningTime(DateTime.Now)); SignedCms signedCms = new SignedCms(new ContentInfo(content)); signedCms.ComputeSignature(cmsSigner, true); return signedCms.Encode(); } But I get the

问题 This question is the continuation of that one. I also try to communicate with a 3rd party AS2 server. I use the same code as the author of that post. This code (the corrected version) is: private byte[] Sign(byte[] content) { CmsSigner cmsSigner = new CmsSigner(_cert); cmsSigner.SignedAttributes.Add(new Pkcs9SigningTime(DateTime.Now)); SignedCms signedCms = new SignedCms(new ContentInfo(content)); signedCms.ComputeSignature(cmsSigner, true); return signedCms.Encode(); } But I get the

问题 We use kafka for our message queue,Our business required that message timestamp must with the same order with the offset, that means: if there are message m1 and message m2, and (m1.timestamp 回答1: It depends on the timestamp type used, there are two types: CreateTime - timestamp is assigned when producer record is created, so before sending. There can be retries, so there is no guarantee that ordering is preserved. LogAppendTime - timestamp is assigned when record is appended to the log on

问题 I have some hex timestamps. I try to convert them into expected date. For example, #ReferenceData Raw Data Expected Date E2 E8 24 26 2019-11-29 20:45:22 For the next expected date, I just minus the current data with the raw data of #ReferenceData to get the difference in seconds and add the difference in second to the expected date of #ReferenceData to get the next expected date. But unfortunately the resulting data seems to be different from the expected one starting from December 2019 Raw

问题 I have some hex timestamps. I try to convert them into expected date. For example, #ReferenceData Raw Data Expected Date E2 E8 24 26 2019-11-29 20:45:22 For the next expected date, I just minus the current data with the raw data of #ReferenceData to get the difference in seconds and add the difference in second to the expected date of #ReferenceData to get the next expected date. But unfortunately the resulting data seems to be different from the expected one starting from December 2019 Raw

问题 I've been working on some raw data obtained from a fingerprint machine(zkemkeeper/ZEM560). I found out that there is a sets of data written in hex and I believe it is a 4 bytes, little endian number of seconds from a certain date. Here some examples of the raw data, actual result and expected date(got from GUI). My purpose is to get the expected date from the raw data. What I have tried was, import datetime sample_expected_date = datetime.datetime(2019, 11, 29, 20, 45, 22).timestamp() sample