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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).

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BCH had asking price 301.5 EUR, 2018-11-18 01:27:40.805
BCH had asking price 345.6 USD, 2018-11-18 01:27:40.817
DASH had asking price 115.478 EUR, 2018-11-18 01:27:40.82
DASH had asking price 132.003 USD, 2018-11-18 01:27:40.823
USDTZ had asking price 0.9797 USD, 2018-11-18 01:27:40.826
XETCZ had asking price 6.412 EUR, 2018-11-18 01:27:40.829
XETCZ had asking price 7.333 USD, 2018-11-18 01:27:40.832
XETHZ had asking price 150.92 EUR, 2018-11-18 01:27:40.836
XETHZ had asking price 172.52 USD, 2018-11-18 01:27:40.839
XLTCZ had asking price 36.43 EUR, 2018-11-18 01:27:40.842
XLTCZ had asking price 41.6 USD, 2018-11-18 01:27:40.845
XREPZ had asking price 9.39 EUR, 2018-11-18 01:27:40.848
XXBTZ had asking price 4819.9 EUR, 2018-11-18 01:27:40.851
XXBTZ had asking price 5512.1 USD, 2018-11-18 01:27:40.853
XXMRZ had asking price 76.73 EUR, 2018-11-18 01:27:40.856
XXMRZ had asking price 87.62 USD, 2018-11-18 01:27:40.859
XXRPZ had asking price 0.42581 EUR, 2018-11-18 01:27:40.863
XXRPZ had asking price 0.48674 USD, 2018-11-18 01:27:40.865
XZECZ had asking price 96.495 EUR, 2018-11-18 01:27:40.868
XZECZ had asking price 110.26 USD, 2018-11-18 01:27:40.871

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