Re: Avoid recipient-compatibility SHA1

2020-11-17 Thread Mark
Not to ask a stupid question but how can you tell which algorithm your keys are using and if using SHA1 update them to a more secure one? Thanks, On 11/17/2020 4:13 PM, Phil Pennock via Gnupg-users wrote: The current state of SHA1 is "dangerously exposed, you should be hurrying for the exits,

Re: Avoid recipient-compatibility SHA1

2020-11-17 Thread Phil Pennock via Gnupg-users
On 2020-11-17 at 15:47 +, Stefan Claas wrote: >} Since 2005, SHA-1 has not been considered secure against well-funded >} opponents;[4] as of 2010 many organizations have recommended its >} replacement.[5][6][7] NIST formally deprecated use of SHA-1 in 2011 >} and disallowed its use for digital

Re: Avoid recipient-compatibility SHA1

2020-11-17 Thread Ernst G Giessmann via Gnupg-users
The answer to the second question is: A SHA-1 collision of two documents D1 and D2 means that the hash values Hash(D1) and Hash(D2) are equal, which in turn means that (regardless who signs) any signature of D1 (be it OpenPGP or SMIME) can also be used as a signature of D2. Any signer and any

Re: Avoid recipient-compatibility SHA1

2020-11-17 Thread Stefan Claas via Gnupg-users
On Mon, Nov 2, 2020 at 2:25 PM Phil Pennock via Gnupg-users wrote: > > On 2020-11-02 at 13:49 +0100, Werner Koch via Gnupg-users wrote: > > On Fri, 30 Oct 2020 00:10, Phil Pennock said: > > > recipient. That's fine. I'd rather create pressure for people to fix > > > their systems to use modern

Re: How to change the protect cipher algorithm and the digest algorithm of the secret key?

2020-11-17 Thread Werner Koch via Gnupg-users
On Tue, 17 Nov 2020 02:28, Gao Xiaohui said: > conf.conf". At present, the "--s2k-count" option can be used in both > gpg.exe and gpg-agent.exe.Thank you. In gpg.conf this is used for deriving a passphrase for symmetric encryption. In gpg-agent.conf it is used to override the calibrated

Re: How to change the protect cipher algorithm and the digest algorithm of the secret key?

2020-11-17 Thread Gao Xiaohui via Gnupg-users
Thank you for your reply to my question. In "https://dev.gnupg.org/T1800;, Werner responded: "It is an open question whether gpg should be allowed to change the s2k options because the keys are a property of the agent and not of gpg. For export it might hwoever make sense to be able to change

[Announce] GnuPG 2.2.24 released

2020-11-17 Thread Werner Koch via Gnupg-users
Hello! We are pleased to announce the availability of a new GnuPG release: version 2.2.24. This is maintenace release fixing some long standing bugs. See below for details. What is GnuPG = The GNU Privacy Guard (GnuPG, GPG) is a complete and free implementation of the OpenPGP and