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Openssl Asn1parse Example

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. It is also a general-purpose cryptography library. For more information about the team and community around the project, or to start making your own contributions, start with the community page.

Openssl Asn1parse Example

This command line utility reads a X509.v3 certificate (in DER or PEM encoding),decodes it and outputs a textual representation. It more or less mimicsopenssl asn1parse:

The main function is pretty_print:

  • OpenSSL 'ans1parse' - ASN.1 INTEGER Field Type What is ASN.1 INTEGER field type? How to specify INTEGER field type in OpenSSL 'asn1parse' command? ASN.1 INTEGER field is a primitive field that can be used to store signed integers of any size. To use ASN.1 INTEGER field in OpenSSL 'asn1parse' command, you need to remember the following rules: ASN.
  • The OpenSSL can be used for generating CSR for the certificate installation process in servers. So, today we are going to list some of the most popular and widely used OpenSSL commands. These examples will probably include those ones which you are looking for. So, have a look at these best OpenSSL Commands Examples. Common OpenSSL Commands.
OpensslOpenssl connect command

This code:

Openssl Examples

  • line 3: Loops until its reaches the end of the input stream (with Decoder.eof()).
  • line 4: Looks (with Decoder.peek()) at the current tag.
  • line 5: If the tag is primitive (TypePrimitive) …
  • line 6: … the code reads (with Decoder.read()) the current tag.
  • line 8: Then it displays its number and value (after some mapping to be more user-fiendly).
  • line 10: If the tag is constructed (TypeConstructed) …
  • line 12: … the code displays its class and number.
  • line 14: Then it enters inside the tag and …
  • line 15: … calls itself recursively to decode the ASN.1 tags inside.
  • line 16: Leaves the current constructed tag (with Decoder.leave()) to continue the decoding of its siblings.
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