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Tools/ASN.1 / DER Decoder
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EMV & ChipAvailable
ASN.1 / DER Decoder
Decode ASN.1 / DER (and BER) hex, base64, or PEM encoded structures — certificates, keys, and payment data.
Follows ITU-T X.69002/2021·verified Oct 2026· double-checked Oct 2026— BER/DER incl. indefinite length; trees of real certificates, keys, PKCS#12 and CMS match openssl asn1parse, pyasn1 and asn1crypto
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