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Get Opiekey old version APK for Android
An (other) OTP key generator.
Support both md5 and sha1 hashes.
Has the ability to store the last passphrase, which will be encrypted using AES with the phone's IMEI and IMSI to generate the key (hence the requirement of android.permission.READ_PHONE_STATE)
Source available at http://android.f00d.nl/opiekey/