The following example shows how the subject name TestCN.TestOrg is encoded. DER requires that each item in the name be represented by a TLV triplet where T contains the tag number of the ASN.1 type, L contains the length, and V contains the associated value. The Certificate Enrollment API uses Distinguished Encoding Rules (DER) to encode the preceding subject name. RelativeDistinguishedName ::= SET OF AttributeTypeValue Name ::= SEQUENCE OF RelativeDistinguishedName The ASN.1 syntax for a subject name is shown in the following example. Each RDN in the sequence consists of an object identifier (OID) and a value. The name is a sequence of X.500 relative distinguished names (RDNs). ASN.1 Syntax ExampleĪ certificate request contains, among other things, the name of the entity that is making the request or for which the request is being made. ASN.1 can be conceptually divided into a set of syntax rules and a set of encoding rules as shown by the following examples. The Certificate Enrollment API uses Abstract Syntax Notation One (ASN.1) to define, encode, and decode the certificate requests and certificates that it transfers between client computers and certification authorities.
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