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Fix cosign generate Azure key pair bug #1525

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merged 14 commits into from Dec 4, 2023

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malancas
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@malancas malancas commented Nov 22, 2023

Summary

Addresses the bug reported in sigstore/cosign#3094. That bug reports the inability to generate a key pair using the Azure Key Vault KMS. After some digging, I found the issue had to do with where the function that returns key pair's hash function is called.

This updates the Azure KMS so the key pair hash function is requested when signing and verifying, instead of retrieving it when the client is created.

This pull request also adds more logic around testing whether the a key pair with a given name already exists before attempting to generate one.

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Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
@malancas malancas marked this pull request as ready for review November 28, 2023 17:58
@@ -70,11 +70,6 @@ func LoadSignerVerifier(defaultCtx context.Context, referenceStr string) (*Signe
return nil, err
}

a.hashFunc, _, err = a.client.getKeyVaultHashFunc(defaultCtx)
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This was causing the bug reported in sigstore/cosign#3094. The call to getKeyVaultHashFunc would fail because it would try to get the hash function of a non-existent key.

Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
Signed-off-by: Meredith Lancaster <malancas@github.com>
@haydentherapper haydentherapper merged commit f6b3cde into sigstore:main Dec 4, 2023
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2 participants