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Authentication is the act of one entity proving its identity to another entity. Common examples involve public key cryptography. For example, proving that a banking web site actually belongs to the bank you think it does.

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Is this OTP validation procedure appropriate? Your validation procedure seems mostly okay, but your generation procedure certainly is not. Since it is within 15-30 minutes, the same OTP is ge …
answered Feb 17 '16 by Lightness Races with Monica