No attestation from Alice Calendar Server

[RebekkalPangras]

Hi,

I stamp the document hashes with multistamp method using multiple calendars. Recently, the hashes timestamped do not have alice's attestation. On trying to connect to the alice calendar server, received 'Received fatal alert: handshake_failure' error. I would greatly appreciate any assistance you can provide in resolving this issue. Thanks.

[petertodd]

Does this error happen consistently or sporadically?

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On February 9, 2023 7:23:33 AM GMT+01:00, Rebekkal ***@***.***> wrote: Hi, I stamp the document hashes with multistamp method using multiple calendars. Recently, the hashes timestamped do not have alice's attestation. On trying to connect to the alice calendar server, received '**Received fatal alert: handshake_failure**' error. I would greatly appreciate any assistance you can provide in resolving this issue. Thanks. -- Reply to this email directly or view it on GitHub: #60 You are receiving this because you are subscribed to this thread. Message ID: ***@***.***>

[RebekkalPangras]

It has been happening continuously for the past few months

[petertodd]

On Thu, Feb 09, 2023 at 01:55:25AM -0800, Rebekkal wrote: It happens continuously for the past few months

How old is your Java version? The difference between Alice and Bob is that Bob uses a RSA certificate for SSL, and Alice uses an ECC certificate. Really old versions of Java might not be able to handle that.

[RebekkalPangras]

Thank you for your response. We use Java 11.

[petertodd]

On February 10, 2023 6:32:39 AM GMT+01:00, Rebekkal ***@***.***> wrote: Thank you for your response. We use Java 11.

What distro are you running it on?

[RebekkalPangras]

OS distribution is CentOS 7

[petertodd]

Thanks. CentOS 7 was released in 2014, and will EOL in 2024, so it's probably old enough that it missed the ECC key upgrade. Let's Encrypt now enables ECC keys by default, so this probably happened when I upgraded Alice a few months ago. What are your plans for upgrading CentOS?

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On February 10, 2023 6:52:26 AM GMT+01:00, Rebekkal ***@***.***> wrote: OS distribution is CentOS 7 -- Reply to this email directly or view it on GitHub: #60 (comment) You are receiving this because you commented. Message ID: ***@***.***>