Add support for checking cert email against user config before signing. #246
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This change adds a new config option: gitsign.matchCommitter. This option checks whether the certificate fetched matches the user configured email/name. For human users, this generally means that the SAN email in the cert matches the `user.email` Git config option. For non-email based identities (e.g. machine users), the SAN URI can be specified as the user name (since the URI isn't a valid email). Gitsign requires at least one condition to match for the check to succeed. This change does *not* enforce any constraints on verification, since this requires additional checking to know what IdP is considered valid. Signed-off-by: Billy Lynch <billy@chainguard.dev>
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hectorj2f
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Feb 22, 2023
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Summary
This change adds a new config option: gitsign.matchCommitter. This option checks whether the certificate fetched matches the user configured email/name.
For human users, this generally means that the SAN email in the cert matches the
user.emailGit config option.For non-email based identities (e.g. machine users), the SAN URI can be specified as the user name (since the URI isn't a valid email).
Gitsign requires at least one condition to match for the check to succeed.
This change does not enforce any constraints on verification, since this requires additional checking to know what IdP is considered valid.
Fixes #104
Release Note
gitsign.matchCommitterconfig option. This option checks whether the certificate fetched matches the user configured email/name.Documentation
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