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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 488.4 EUR, 2018-08-19 13:06:20.107
BCH had asking price 557.4 USD, 2018-08-19 13:06:20.125
DASH had asking price 135.135 EUR, 2018-08-19 13:06:20.126
DASH had asking price 154.0 USD, 2018-08-19 13:06:20.127
USDTZ had asking price 1.0004 USD, 2018-08-19 13:06:20.128
XETCZ had asking price 11.565 EUR, 2018-08-19 13:06:20.129
XETCZ had asking price 13.205 USD, 2018-08-19 13:06:20.13
XETHZ had asking price 260.59 EUR, 2018-08-19 13:06:20.131
XETHZ had asking price 298.01 USD, 2018-08-19 13:06:20.131
XLTCZ had asking price 50.05 EUR, 2018-08-19 13:06:20.133
XLTCZ had asking price 57.09 USD, 2018-08-19 13:06:20.134
XREPZ had asking price 15.876 EUR, 2018-08-19 13:06:20.135
XXBTZ had asking price 5600.5 EUR, 2018-08-19 13:06:20.136
XXBTZ had asking price 6389.0 USD, 2018-08-19 13:06:20.137
XXMRZ had asking price 84.62 EUR, 2018-08-19 13:06:20.137
XXMRZ had asking price 96.51 USD, 2018-08-19 13:06:20.138
XXRPZ had asking price 0.29943 EUR, 2018-08-19 13:06:20.139
XXRPZ had asking price 0.34253 USD, 2018-08-19 13:06:20.14
XZECZ had asking price 122.87 EUR, 2018-08-19 13:06:20.141
XZECZ had asking price 140.6 USD, 2018-08-19 13:06:20.142


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