|X509_VERIFY_CERT(3)||Library Functions Manual||X509_VERIFY_CERT(3)|
discover and verify X509 certificate chain
function attempts to discover and validate a certificate chain based on
parameters in ctx.
Applications rarely call this function directly, but it is used by OpenSSL internally for certificate validation, in both the S/MIME and SSL/TLS code.
If a complete chain can be built and validated this function returns 1, otherwise it returns a value <= 0 indicating failure.
Additional error information can be obtained by examining ctx, using X509_STORE_CTX_get_error(3).
X509_verify_cert() first appeared in
SSLeay 0.8.0 and has been available since OpenBSD
|June 6, 2019||OpenBSD-current|