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OpenSSL "ans1parse" - ASN.1 BIT STRING Field Type
What is ASN.1 BIT STRING field type? How to specify BIT STRING field type in OpenSSL "asn1parse" command? ASN.1 BIT STRING field is a primitive field that can be used to store bit strings of any size. To use ASN.1 BIT STRING field in OpenSSL "asn1parse" command, you need to remember the following ru...
2016-09-30, 12579🔥, 0💬

OpenSSL "ans1parse" - ASN.1 OBJECT IDENTIFIER Field Type
What is ASN.1 OBJECT IDENTIFIER field type? How to specify OBJECT IDENTIFIER field type in OpenSSL "asn1parse" command? ASN.1 OBJECT IDENTIFIER field is a primitive field that can be used to store an Object Identifier (OID) defined in the ASN.1 standard. An OID has 3 equivalent values: short name, l...
2016-09-30, 8823🔥, 0💬

OpenSSL "ans1parse" - ASN.1 OCTET STRING Field Type
What is ASN.1 OCTET STRING field type? How to specify OCTET STRING field type in OpenSSL "asn1parse" command? ASN.1 OCTET STRING field is a primitive field that can be used to store byte strings of any size. To use ASN.1 OCTET STRING field in OpenSSL "asn1parse" command, you need to remember the fol...
2016-09-28, 11947🔥, 0💬

OpenSSL "ans1parse" - DER (Distinguished Encoding Rules)
What is the DER (Distinguished Encoding Rules) encoding used in the OpenSSL "asn1parse" command? DER (Distinguished Encoding Rules) is an encoding schema to convert an ASN.1 data structure into a binary string. In other words, DER is a serialization schema for the ASN.1 data structure. DER is one th...
2016-09-28, 8700🔥, 0💬

OpenSSL "ans1parse" - BITWRAP and OCTWRAP Modifiers
What are BITWRAP and OCTWRAP modifiers in the configuration file for the OpenSSL "asn1parse" command? BITWRAP and OCTWRAP modifiers in OpenSSL configuration files are used to automatically wrap a SEQUENCE structure into a BIT STRING or OCTET STRING field. The test below is a demonstration of using B...
2016-09-28, 6790🔥, 0💬

OpenSSL "ans1parse" - Wrap of SEQUENCE Structure
What is the wrap of an ASN.1 SEQUENCE structure? The wrap of an ASN.1 SEQUENCE structure is the binary string of ASN.1 SEQUENCE structure in DER format stored in an BIT STRING or OCTET STRING field in another ASN.1 SEQUENCE structure. The main purpose of using the SEQUENCE wrap is to make the SEQUEN...
2016-09-28, 6098🔥, 0💬

OpenSSL "ans1parse" - Wrap of Primitive Field
Can I wrap a primitive field into a BIT STRING or OCTET STRING field with the OpenSSL "asn1parse" command? Yes, you can wrap any ASN.1 primitive field into a BIT STRING or OCTET STRING field using the BITWRAP or OCTWRAP modifiers using the OpenSSL "asn1parse" command. The test below gives some demon...
2016-09-28, 5879🔥, 0💬

OpenSSL "ans1parse" - RSA Private Key in ASN.1 Structure
How to view the ASN.1 structure of an RSA private key using the OpenSSL "asn1parse" command? You can use the OpenSSL "asn1parse" command to view the ASN.1 structure of an RSA private key as shown in the test below: C:\Users\fyicenter&gt;\loc al\openssl\opensslgenrsa -out rsa_pri.key 512 Generati...
2016-09-27, 12267🔥, 0💬

OpenSSL "ans1parse" - RSA Public Key in ASN.1 Structure
How to view the ASN.1 structure of an RSA public key using the OpenSSL "asn1parse" command? You can use the OpenSSL "asn1parse" command to view the ASN.1 structure of an RSA public key as shown in the test below: C:\Users\fyicenter&gt;\loc al\openssl\opensslpkey -in rsa_pri.key -pubout -out rsa_...
2016-09-27, 10739🔥, 0💬

OpenSSL "ans1parse" - DSA Private Key in ASN.1 Structure
How to view the ASN.1 structure of an DSA private key using the OpenSSL "asn1parse" command? You can use the OpenSSL "asn1parse" command to view the ASN.1 structure of an DSA private key as shown in the test below: C:\Users\fyicenter&gt;\loc al\openssl\opensslgenpkey -genparam -algorithm dsa -ou...
2016-09-27, 7072🔥, 0💬

OpenSSL "ans1parse" - Configuration File for RSA Private Key
Can I build an RSA private key from an OpenSSL configuration file? Yes, you can build an RSA private key from an OpenSSL configuration file, if you know the components of the key, as shown in the test below: C:\Users\fyicenter&gt;type asn1_rsa_pri_key.cnf asn1 = SEQUENCE:rsa_pri_key [rsa_pri_key...
2016-09-27, 6384🔥, 0💬

OpenSSL "ans1parse" - Configuration File for RSA Public Key
Can I build an RSA public key from an OpenSSL configuration file? Yes, you can build an RSA public key from an OpenSSL configuration file, if you know the components of the key, as shown in the test below: C:\Users\fyicenter&gt;type asn1_rsa_pub_key.cnf asn1 = SEQUENCE:rsa_pub_key [rsa_pub_key] ...
2016-09-27, 6273🔥, 0💬

OpenSSL "ans1parse" - DSA Public Key in ASN.1 Structure
How to view the ASN.1 structure of an DSA public key using the OpenSSL "asn1parse" command? You can use the OpenSSL "asn1parse" command to view the ASN.1 structure of an DSA public key as shown in the test below: C:\Users\fyicenter&gt;\loc al\openssl\opensslpkey -in dsa_pri.key -pubout -out dsa_...
2016-09-26, 7086🔥, 0💬

OpenSSL "ans1parse" - DH Private Key in ASN.1 Structure
How to view the ASN.1 structure of an DH private key using the OpenSSL "asn1parse" command? You can use the OpenSSL "asn1parse" command to view the ASN.1 structure of an DH private key as shown in the test below: C:\Users\fyicenter&gt;\loc al\openssl\opensslgenpkey -genparam -algorithm dh -out d...
2016-09-26, 6940🔥, 0💬

OpenSSL "ans1parse" - DH Public Key in ASN.1 Structure
How to view the ASN.1 structure of an DH public key using the OpenSSL "asn1parse" command? You can use the OpenSSL "asn1parse" command to view the ASN.1 structure of an DH public key as shown in the test below: C:\Users\fyicenter&gt;\loc al\openssl\opensslpkey -in dh_pri.key -pubout -out dh_pub....
2016-09-26, 6529🔥, 0💬

OpenSSL "ans1parse" - Configuration File for DH Private Key
Can I build a DH private key from an OpenSSL configuration file? Yes, you can build a DH private key from an OpenSSL configuration file, if you know the components of the key, as shown in the test below: C:\Users\fyicenter&gt;type asn1_dh_pri_key.cnf asn1 = SEQUENCE:dh_pri_key [dh_pri_key] versi...
2016-09-26, 6135🔥, 0💬

OpenSSL "ans1parse" - Configuration File for DH Public Key
Can I build a DH public key from an OpenSSL configuration file? Yes, you can build a DH public key from an OpenSSL configuration file, if you know the components of the key, as shown in the test below: C:\Users\fyicenter&gt;type asn1_dh_pub_key.cnf asn1 = SEQUENCE:dh_pri_key [dh_pri_key] algorit...
2016-09-26, 5811🔥, 0💬

OpenSSL "ans1parse" - Configuration File for DSA Public Key
Can I build a DSA public key from an OpenSSL configuration file? Yes, you can build a DSA public key from an OpenSSL configuration file, if you know the components of the key, as shown in the test below: C:\Users\fyicenter&gt;type asn1_dsa_pub_key.cnf asn1 = SEQUENCE:dsa_pub_key [dsa_pub_key] al...
2016-09-26, 5763🔥, 0💬

OpenSSL "ans1parse" - Configuration File for DSA Private Key
Can I build a DSA private key from an OpenSSL configuration file? Yes, you can build a DSA private key from an OpenSSL configuration file, if you know the components of the key, as shown in the test below: C:\Users\fyicenter&gt;type asn1_dsa_pri_key.cnf asn1 = SEQUENCE:dsa_pri_key [dsa_pri_key] ...
2016-09-26, 5723🔥, 0💬

OpenSSL "req -new" - CSR Attributes
How to add attributes in new CSR using OpenSSL "req -new" command? I was asked to create a CSR with a challenge password an attribute. In order to add attributes to new CSR created by the OpenSSL "req -new" command, first you need to write attribute options in a named section in the configuration fi...
2016-09-23, 10986🔥, 0💬

OpenSSL "req" - Good Sample openssl.conf
Where can I get a good sample configuration file openssl.conf for OpenSSL "req" command? Below is a good sample configuration file openssl.conf for OpenSSL "req" command with explanations: C:\Users\fyicenter&gt;type openssl.conf # Unnamed section of generic options # ... # ----------------------...
2016-09-23, 6562🔥, 0💬

OpenSSL "ca" Command
Where to find tutorials on using OpenSSL "ca" command? Here is a collection of tutorials on using OpenSSL "ca" command compiled by FYIcenter.com team. OpenSSL "ca" Command Options OpenSSL "ca" - Create CSR for Testing OpenSSL "ca" - Create CA Certificate for Testing OpenSSL "ca" Error "./demoCA/newc...
2016-09-23, 4721🔥, 0💬

OpenSSL "req -x509 -extensions" - Test Self-Signed Certificate V3 Extensions
How to run OpenSSL "req -509" command to generate self-signed certificate with x.509 v3 extensions? I have x509_extensions option defined in the configuration file. If you want to run OpenSSL "req -509" command to generate self-signed certificate with x.509 v3 extensions, you can follow this example...
2016-09-23, 2586🔥, 0💬

OpenSSL "ca" Error "unable to open ./demoCA/index.txt"
Why I am getting the "unable to open './demoCA/index.txt'" error when running OpenSSL "ca" command? If you are running the OpenSSL "ca" command installed with the slproweb binary package for Windows, you may get the "unable to open './demoCA/index.txt'" error as shown below: C:\Users\fyicenter&g...
2016-09-18, 18725🔥, 0💬

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