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gnutls_x509_crt_check_email(3)    gnutls   gnutls_x509_crt_check_email(3)
       gnutls_x509_crt_check_email - API function
       #include <gnutls/x509.h>
       unsigned gnutls_x509_crt_check_email(gnutls_x509_crt_t cert, const
       char * email, unsigned int flags);
       gnutls_x509_crt_t cert
                   should contain an gnutls_x509_crt_t type
       const char * email
                   A null terminated string that contains an email
                   address (RFC822)
       unsigned int flags
                   should be zero
       This function will check if the given certificate's subject
       matches the given email address.
       non-zero for a successful match, and zero on failure.
       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org
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gnutls                            3.8.10   gnutls_x509_crt_check_email(3)