版本（2023 年 5 月 17 日）：我看到了Debian 8 Jessie 密钥已过期 1587841717之前的问题，我已经完成了过期密钥的更新。还有其他已过期的密钥已续订，但 1645052400 密钥（出现了 3 次）仍保持“已过期”状态。因为我认为这是一个例外，所以我创建了这个问题。
正在尝试升级Debian 8.3 Jessie 到 Debian 10.13 Buster，我在运行后继续收到“KEYEXPIRED”错误消息apt-get update，甚至更新过期的密钥：
# apt-key list | grep -A 1 expired
pub 1024D/5072E1F5 2003-02-03 [expired: 2022-02-16]
uid MySQL Release Engineering <[email protected]>
--
pub 4096R/518E17E1 2013-08-17 [expired: 2021-08-15]
uid Jessie Stable Release Key <[email protected]>
--
pub 4096R/65FFB764 2012-05-08 [expired: 2019-05-07]
uid Wheezy Stable Release Key <[email protected]>
# apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 5072E1F5 ; apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 518E17E1 ; apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 65FFB764
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.dux8x5wGCC --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d/apt.postgresql.org.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-jessie-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-jessie-security-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-jessie-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-stretch-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-stretch-security-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-stretch-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-stable.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 5072E1F5
gpg: requesting key 5072E1F5 from hkp server keyserver.ubuntu.com
gpg: key 5072E1F5: "MySQL Release Engineering <[email protected]>" not changed
gpg: Número total processado: 1
gpg: não modificados: 1
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.4zdbdTUejR --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d/apt.postgresql.org.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-jessie-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-jessie-security-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-jessie-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-stretch-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-stretch-security-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-stretch-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-stable.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 518E17E1
gpg: requesting key 518E17E1 from hkp server keyserver.ubuntu.com
gpg: key 518E17E1: "Jessie Stable Release Key <[email protected]>" not changed
gpg: Número total processado: 1
gpg: não modificados: 1
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --homedir /tmp/tmp.SxFd1nEp2W --no-auto-check-trustdb --trust-model always --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyring /etc/apt/trusted.gpg.d/apt.postgresql.org.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-jessie-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-jessie-security-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-jessie-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-squeeze-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-stretch-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-stretch-security-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-stretch-stable.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-automatic.gpg --keyring /etc/apt/trusted.gpg.d/debian-archive-wheezy-stable.gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 65FFB764
gpg: requesting key 65FFB764 from hkp server keyserver.ubuntu.com
gpg: key 65FFB764: "Wheezy Stable Release Key <[email protected]>" not changed
gpg: Número total processado: 1
gpg: não modificados: 1
# apt-get update
...
Lendo listas de pacotes... Pronto
W: Ocorreu um erro durante a verificação da assinatura. O repositório não está actualizado e serão utilizados os ficheiros anteriores de índice. Erro do GPG: http://repo.mysql.com jessie InRelease: As seguintes assinaturas eram inválidas: KEYEXPIRED 1645052400 KEYEXPIRED 1645052400 KEYEXPIRED 1645052400
...
我的/etc/apt/sources.list：
deb http://security.debian.org/ jessie/updates main contrib non-free
deb-src http://security.debian.org/ jessie/updates main contrib non-free
deb http://ftp.br.debian.org/debian/ jessie main contrib non-free
deb-src http://ftp.br.debian.org/debian/ jessie main contrib non-free
我该如何解决？
预先感谢，艾伦