(Ruby) ScMinidriver - Acquire Context with Smart Card or USB Token

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Initializes communication with the card inserted in the given reader (or a USB token). Reader names can be discovered via the SCard.ListReaders or SCard.FindSmartcards methods. If successful, the Atr and CardName properties will be set.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

scmd = Chilkat::CkScMinidriver.new()

# Reader names (smart card readers or USB tokens) can be discovered
# via List Readers or Find Smart Cards
readerName = "Alcor Micro USB Smart Card Reader 0"
success = scmd.AcquireContext(readerName)
if (success == false)
    print scmd.lastErrorText() + "\n";
    exit
end

# If we are successful, the name of the currently inserted smart card is available:
cardName = scmd.cardName()
print "Card name: " + cardName + "\n";

# Also, the ATR of the inserted card is available (you will likely not need the ATR).
print "ATR: " + scmd.atr() + "\n";

# Also, the maximum number of key containers is readily available:
print "Max number of key containers = " + scmd.get_MaxContainers().to_s() + "\n";

# Delete the context when finished with the card.
success = scmd.DeleteContext()
if (success == false)
    print scmd.lastErrorText() + "\n";
end

# Sample output:

# Card name: IDPrime MD T=0
# ATR: 3B7F96000080318065B0855956FB120FFE829000
# Max number of key containers = 20