dumpasn1

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Displays contents of ASN.1 encoded data.

Sample output from this program (using the default format) is::

 256  159: SEQUENCE {
 259   13:   SEQUENCE {
 261    9:     OBJECT IDENTIFIER rsaEncryption (1 2 840 113549 1 1 1)
 272    0:     NULL
         :     }
 274  141:   BIT STRING, encapsulates {
 278  137:     SEQUENCE {
 281  129:       INTEGER
         :         00 E5 19 BF 6D A3 56 61 2D 99 48 71 F6 67 DE B9
 [...]   :         8F
 413    3:       INTEGER 65537
         :       }
         :     }
         :   }

See https://www.cs.auckland.ac.nz/~pgut001/ for details.