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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 107.4 EUR, 2019-02-11 18:21:10.166
BCH had asking price 120.9 USD, 2019-02-11 18:21:10.169
DASH had asking price 69.673 EUR, 2019-02-11 18:21:10.171
DASH had asking price 78.185 USD, 2019-02-11 18:21:10.173
USDTZ had asking price 0.9894 USD, 2019-02-11 18:21:10.176
XETCZ had asking price 3.533 EUR, 2019-02-11 18:21:10.178
XETCZ had asking price 3.979 USD, 2019-02-11 18:21:10.18
XETHZ had asking price 106.5 EUR, 2019-02-11 18:21:10.182
XETHZ had asking price 119.92 USD, 2019-02-11 18:21:10.184
XLTCZ had asking price 37.64 EUR, 2019-02-11 18:21:10.187
XLTCZ had asking price 42.36 USD, 2019-02-11 18:21:10.189
XREPZ had asking price 11.811 EUR, 2019-02-11 18:21:10.191
XXBTZ had asking price 3196.5 EUR, 2019-02-11 18:21:10.193
XXBTZ had asking price 3595.0 USD, 2019-02-11 18:21:10.195
XXMRZ had asking price 42.27 EUR, 2019-02-11 18:21:10.198
XXMRZ had asking price 47.58 USD, 2019-02-11 18:21:10.2
XXRPZ had asking price 0.26689 EUR, 2019-02-11 18:21:10.202
XXRPZ had asking price 0.30039 USD, 2019-02-11 18:21:10.204
XZECZ had asking price 44.449 EUR, 2019-02-11 18:21:10.207
XZECZ had asking price 50.06 USD, 2019-02-11 18:21:10.209


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