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pkcs7: fix verify signing time check issue #294

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Sun Yimin 2025-01-14 17:10:00 +08:00 committed by GitHub
parent 8331b37e37
commit 818e14ee32
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 11 additions and 13 deletions
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22
pkcs7/verify.go
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@ -36,7 +36,6 @@ func (p7 *PKCS7) VerifyWithChain(truststore *smx509.CertPool) (err error) {
return p7.verifyWithChain(truststore, false)
}
// VerifyAsDigestWithChain verifies the PKCS7 signature using the provided truststore
// and treats the content as a precomputed digest. It returns an error if the verification fails.
func (p7 *PKCS7) VerifyAsDigestWithChain(truststore *smx509.CertPool) (err error) {
@ -84,15 +83,6 @@ func verifySignature(p7 *PKCS7, signer signerInfo, truststore *smx509.CertPool,
return errors.New("pkcs7: No certificate for signer")
}
signingTime := time.Now().UTC()
if truststore != nil {
if currentTime != nil {
signingTime = *currentTime
}
_, err = verifyCertChain(ee, p7.Certificates, truststore, signingTime)
if err != nil {
return err
}
}
sigalg, err := getSignatureAlgorithm(signer.DigestEncryptionAlgorithm, signer.DigestAlgorithm)
if err != nil {
return err
@ -134,9 +124,17 @@ func verifySignature(p7 *PKCS7, signer signerInfo, truststore *smx509.CertPool,
ee.NotAfter.Format(time.RFC3339))
}
}
return ee.CheckSignature(sigalg, signedData, signer.EncryptedDigest)
}
if isDigest {
if truststore != nil {
if currentTime != nil {
signingTime = *currentTime
}
_, err = verifyCertChain(ee, p7.Certificates, truststore, signingTime)
if err != nil {
return err
}
}
if isDigest && len(signer.AuthenticatedAttributes) == 0 {
return ee.CheckSignatureWithDigest(sigalg, signedData, signer.EncryptedDigest)
}
return ee.CheckSignature(sigalg, signedData, signer.EncryptedDigest)