Fix #69882: OpenSSL error "key values mismatch" after openssl_pkcs12_read with extra certs #1359
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The "key values mismatch" error is triggered in openssl_pkcs12_read by PKCS12_parse, because it uses X509_check_private_key to separate main certificate (which corresponds to private key) from extra certificates. Extra certificates usually comes first (p12 contents are reversed as stack) and X509_check_private_key triggers X509_R_KEY_VALUES_MISMATCH error.
The fix pops "key values mismatch" error from OpenSSL error stack for each extra certificate if there are any.