Module: OpenSSL::SSL (Ruby 2.4.2)
Description: Module : OpenSSL::SSL - Ruby 2.4.2

Support for the Ruby 2.4 series has ended. See here for reference.

### Home Classes Methods

### In Files

- openssl/lib/openssl/ssl.rb
- openssl/ossl.c

### Namespace

- MODULE OpenSSL::SSL::SocketForwarder
- CLASS OpenSSL::SSL::SSLContext
- CLASS OpenSSL::SSL::SSLError
- CLASS OpenSSL::SSL::SSLErrorWaitReadable
- CLASS OpenSSL::SSL::SSLErrorWaitWritable
- CLASS OpenSSL::SSL::SSLServer
- CLASS OpenSSL::SSL::SSLSocket
- CLASS OpenSSL::SSL::Session

### Methods

- ::verify_certificate_identity

### Class/Module Index

Quicksearch

- IO
- IO::WaitReadable
- IO::WaitWritable
- Integer
- OpenSSL
- OpenSSL::ASN1
- OpenSSL::ASN1::ASN1Data
- OpenSSL::ASN1::ASN1Error
- OpenSSL::ASN1::Constructive
- OpenSSL::ASN1::ObjectId
- OpenSSL::ASN1::Primitive
- OpenSSL::BN
- OpenSSL::BNError
- OpenSSL::Buffering
- OpenSSL::Cipher
- OpenSSL::Cipher::Cipher
- OpenSSL::Cipher::CipherError
- OpenSSL::Config
- OpenSSL::ConfigError
- OpenSSL::Digest
- OpenSSL::Digest::DigestError
- OpenSSL::Engine
- OpenSSL::Engine::EngineError
- OpenSSL::ExtConfig
- OpenSSL::HMAC
- OpenSSL::HMACError
- OpenSSL::Netscape
- OpenSSL::Netscape::SPKI
- OpenSSL::Netscape::SPKIError
- OpenSSL::OCSP
- OpenSSL::OCSP::BasicResponse
- OpenSSL::OCSP::CertificateId
- OpenSSL::OCSP::OCSPError
- OpenSSL::OCSP::Request
- OpenSSL::OCSP::Response
- OpenSSL::OCSP::SingleResponse
- OpenSSL::OpenSSLError
- OpenSSL::PKCS12
- OpenSSL::PKCS12::PKCS12Error
- OpenSSL::PKCS5
- OpenSSL::PKCS5::PKCS5Error
- OpenSSL::PKCS7
- OpenSSL::PKCS7::PKCS7Error
- OpenSSL::PKCS7::RecipientInfo
- OpenSSL::PKCS7::SignerInfo
- OpenSSL::PKey
- OpenSSL::PKey::DH
- OpenSSL::PKey::DHError
- OpenSSL::PKey::DSA
- OpenSSL::PKey::DSAError
- OpenSSL::PKey::EC
- OpenSSL::PKey::EC::Group
- OpenSSL::PKey::EC::Group::Error
- OpenSSL::PKey::EC::Point
- OpenSSL::PKey::EC::Point::Error
- OpenSSL::PKey::ECError
- OpenSSL::PKey::PKey
- OpenSSL::PKey::PKeyError
- OpenSSL::PKey::RSA
- OpenSSL::PKey::RSAError
- OpenSSL::Random
- OpenSSL::Random::RandomError
- OpenSSL::SSL
- OpenSSL::SSL::SSLContext
- OpenSSL::SSL::SSLError
- OpenSSL::SSL::SSLErrorWaitReadable
- OpenSSL::SSL::SSLErrorWaitWritable
- OpenSSL::SSL::SSLServer
- OpenSSL::SSL::SSLSocket
- OpenSSL::SSL::Session
- OpenSSL::SSL::Session::SessionError
- OpenSSL::SSL::SocketForwarder
- OpenSSL::X509
- OpenSSL::X509::Attribute
- OpenSSL::X509::AttributeError
- OpenSSL::X509::CRL
- OpenSSL::X509::CRLError
- OpenSSL::X509::Certificate
- OpenSSL::X509::CertificateError
- OpenSSL::X509::Extension
- OpenSSL::X509::ExtensionError
- OpenSSL::X509::ExtensionFactory
- OpenSSL::X509::Name
- OpenSSL::X509::Name::RFC2253DN
- OpenSSL::X509::NameError
- OpenSSL::X509::Request
- OpenSSL::X509::RequestError
- OpenSSL::X509::Revoked
- OpenSSL::X509::RevokedError
- OpenSSL::X509::Store
- OpenSSL::X509::StoreContext
- OpenSSL::X509::StoreError

No matching classes.

# OpenSSL::SSL

Use `SSLContext` to set up the parameters for a TLS (former `SSL`) connection. Both client and server TLS connections are supported, `SSLSocket` and `SSLServer` may be used in conjunction with an instance of `SSLContext` to set up connections.

### Public Class Methods

verify_certificate_identity(cert, hostname) click to toggle source

                   # File openssl/lib/openssl/ssl.rb, line 157
    def verify_certificate_identity(cert, hostname)
      should_verify_common_name = true
      cert.extensions.each{|ext|
        next if ext.oid != "subjectAltName"
        ostr = OpenSSL::ASN1.decode(ext.to_der).value.last
        sequence = OpenSSL::ASN1.decode(ostr.value)
        sequence.value.each{|san|
          case san.tag
          when 2 # dNSName in GeneralName (RFC5280)
            should_verify_common_name = false
            return true if verify_hostname(hostname, san.value)
          when 7 # iPAddress in GeneralName (RFC5280)
            should_verify_common_name = false
            # follows GENERAL_NAME_print() in x509v3/v3_alt.c
            if san.value.size == 4
              return true if san.value.unpack('C*').join('.') == hostname
            elsif san.value.size == 16
              return true if san.value.unpack('n*').map { |e| sprintf("%X", e) }.join(':') == hostname
            end
          end
        }
      }
      if should_verify_common_name
        cert.subject.to_a.each{|oid, value|
          if oid == "CN"
            return true if verify_hostname(hostname, value)
          end
        }
      end
      return false
    end