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ASN.1 Field Types Supported by OpenSSL
What are ASN.1 field types supported by the OpenSSL "ans1parse" command? OpenSSL "ans1parse" command supports the following ASN.1 field types: BOOLEAN, BOOL - This encodes a boolean type. The value string is mandatory and should be TRUE or FALSE. Additionally TRUE, true, Y, y, YES, yes, FALSE, false...
2016-10-15, 4612👍, 0💬

OpenSSL "ans1parse -genconf" - Nested SEQUENCE ASN.1 Structure
How to how generate a DER with a nested SEQUENCE ASN.1 structure using the OpenSSL "ans1parse" command? You can define a nested SEQUENCE ASN.1 structure in an OpenSSL configuration file and use the "ans1parse -genconf" command to generate a DER with the structure as shown in the test below: C:\Users...
2016-10-15, 4549👍, 0💬

OpenSSL "ans1parse -genconf" - Configuration File
How to generate a DER file with a configuration file using the OpenSSL "ans1parse" command? You can use the OpenSSL configuration file to define an ASN.1 structure and call OpenSSL "ans1parse -genconf config_file" command to generate a DER file by respecting the following rules: 1. Use "ans1parse -g...
2016-10-15, 4534👍, 0💬

OpenSSL "ans1parse -genstr" - Single Primitive Field DER File
How to generate a DER file with a single data field using the OpenSSL "ans1parse" command? You can use the OpenSSL "ans1parse -genstr" command to generate a DER file with a single data field. You just need to specify the field type and field value separated by ":". Here are some examples of using "a...
2016-10-15, 4468👍, 0💬

OpenSSL "ans1parse -in" - Parse DER File
How to parse a DER file using the OpenSSL "ans1parse" command? You can parse a DER file with OpenSSL "ans1parse -inform DER -in" command as shown in the test below, assuming we have some DER file created from the previous tutorial: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&gt;...
2016-10-15, 4384👍, 0💬

OpenSSL "ans1parse" - ASN.1 INTEGER Field Type
How to how extra an ASN.1 child structure using the OpenSSL "ans1parse" 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.1 INTEGER type tag...
2016-09-30, 4735👍, 0💬

OpenSSL "ans1parse" - ASN.1 IA5STRING Field Type
How to how extra an ASN.1 child structure using the OpenSSL "ans1parse" command? ASN.1 IA5STRING field is a primitive field that can be used to store IA5 (ISO 646) character strings. IA5 character set is generally equivalent to ASCII character set. To use ASN.1 IA5STRING field in OpenSSL "asn1parse"...
2016-09-30, 4524👍, 0💬

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, 4726👍, 0💬

OpenSSL "ans1parse -strparse" - Extract ASN.1 Sub Structure
How to how extra an ASN.1 child structure using the OpenSSL "ans1parse" command? You can use the OpenSSL "ans1parse -strparse offset" command to extract an ASN.1 child structure from a nested ASN.1 structure. as shown in the test below: C:\Users\fyicenter&gt;\loc al\openssl\openssl.exeOpenSSL&am...
2016-09-30, 4666👍, 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, 4586👍, 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, 4679👍, 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, 4482👍, 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, 4383👍, 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, 4339👍, 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, 4298👍, 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, 4417👍, 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, 4406👍, 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, 4389👍, 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, 4293👍, 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, 4292👍, 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, 4407👍, 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, 4401👍, 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, 4359👍, 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, 4354👍, 0💬

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