JavaCard Applet Development Related Questions and Answers.
When I did the experiment, I wrote the third block of sector 0, which is the tailor block, counting from 0, to 0. Is there any way to recover?
Generally, the block data can be rewritten only after the KeyB is verified to be correct.The initial KeyA and KeyB in each block 3 are the manufacturer's 12 "F" default values.When modifying the control value, do not modify the default passwords KeyA and KeyB first. After the control bit is successfully modified, change the new password value.
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