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Crypto currencies are all around us

Why not switch some of your virtual investment into physical goods?
Crypto(graphy) is at the center of all transactions today. And the technology is in fact very interesting (for those who thinks so).


© - crypto.dk - reproduction not allowed wihout permission

LATEST QUOTES FROM CRYPTO-XCHANGES BY WEBSERVICE/IF



BCH had asking price 1060.5 EUR, 2018-02-21 20:19:06.325
BCH had asking price 1305.2 USD, 2018-02-21 20:19:06.325
DASH had asking price 546.5 EUR, 2018-02-21 20:19:06.356
DASH had asking price 673.868 USD, 2018-02-21 20:19:06.388
USDTZ had asking price 1.002 USD, 2018-02-21 20:19:06.419
XETCZ had asking price 28.2 EUR, 2018-02-21 20:19:06.434
XETCZ had asking price 34.807 USD, 2018-02-21 20:19:06.45
XETHZ had asking price 679.15 EUR, 2018-02-21 20:19:06.481
XETHZ had asking price 837.61 USD, 2018-02-21 20:19:06.497
XLTCZ had asking price 172.75 EUR, 2018-02-21 20:19:06.528
XLTCZ had asking price 213.18 USD, 2018-02-21 20:19:06.559
XREPZ had asking price 37.198 EUR, 2018-02-21 20:19:06.59
XXBTZ had asking price 8554.0 EUR, 2018-02-21 20:19:06.59
XXBTZ had asking price 10543.4 USD, 2018-02-21 20:19:06.59
XXMRZ had asking price 241.77 EUR, 2018-02-21 20:19:06.59
XXMRZ had asking price 300.78 USD, 2018-02-21 20:19:06.59
XXRPZ had asking price 0.7868 EUR, 2018-02-21 20:19:06.59
XXRPZ had asking price 0.97015 USD, 2018-02-21 20:19:06.59
XZECZ had asking price 351.53 EUR, 2018-02-21 20:19:06.59
XZECZ had asking price 432.65 USD, 2018-02-21 20:19:06.59


Graphs are under construction







Crypto is about conscious decisions

In this field, the issue is not right or wrong decisions - but conscious decisions. You are only fully in charge of security if you also understand the limitations of your system. It allows you to act if any of the preconditions changes

Digital Signature using J2EE - source code samples explained


Adaptations in different forms. Assuming JDK 1.4+


The Danish government has attempted to introduce digital signature.

OCES is the official term for the offical danish digital signature project.

How digital signature works in J2EE explains through simple Java examples the basics in Digital Signature (public key cryptography) using J2EE.

PKCS#12 management using J2EE API provides source for a Java class handling most aspects of a file in PKCS#12 format.

CRL, PKCS#12, root certificate - using J2EE API provides source for a Java example checking into CRL (Certificate Revocation List), PKCS#12 information - and veryfying an entry in PKCS#12 using a root certificate.

These are practical examples. In reality, the issue is more complex with need to use TDC infrastructure (fx. PID_to_CVRid service) and more extensive validation using CA root certificate from a trusted source, etc.







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2004 (c) Valentini