Derweave: ASN.1 Explorer

DER trees and certificates

$2.99 · Designed for iPad. Not verified for macOS.

A private ASN.1 BER/DER explorer for tag-length-value trees, OIDs, X.509 certificates, CSRs, PKCS structures, extension bytes, hex ranges, and schema-assisted decoding. Derweave: ASN.1 Explorer is a focused, fully on-device app. A private ASN.1 BER/DER explorer for tag-length-value trees, OIDs, X.509 certificates, CSRs, PKCS structures, extension bytes, hex ranges, and schema-assisted decoding. KEY FEATURES - Decode definite BER and canonical DER TLV trees - Map common OIDs and X.509 fields - Inspect certificates, CSRs, and PKCS containers - Link every node to exact source-byte ranges - Export annotated hex and structural JSON - Complete bundled sample and local comparison workflow - Local PDF report and Apple system share export - Original offline technical reference library ONE-TIME AND PRIVATE - One paid download; no subscription or in-app purchase - No account, advertising, analytics, tracking, or developer-operated backend - Core features and bundled content work offline - Work remains on device unless you deliberately share or export it through an Apple system interface Inspection and learning aid. Trust, revocation, policy, identity, and cryptographic validity require an appropriate validation environment.

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The developer, Robert Corbin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

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    Accessibility

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    Information

    Seller
    • Robert Corbin
    Size
    • 76.3 MB
    Category
    • Developer Tools
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Age Rating
    4+
    Copyright
    • © 2026 Robert Corbin
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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