Provides access to MIFARE Classic properties and I/O operations on a Android.Nfc.Tag.

Acquire a Android.Nfc.Tech.MifareClassic object using MifareClassic.Get(Android.Nfc.Tag).

MIFARE Classic is also known as MIFARE Standard.

MIFARE Classic tags are divided into sectors, and each sector is sub-divided into blocks. Block size is always 16 bytes (MifareClassic.BlockSize. Sector size varies.

• MIFARE Classic Mini are 320 bytes (MifareClassic.SizeMini), with 5 sectors each of 4 blocks.
• MIFARE Classic 1k are 1024 bytes (MifareClassic.Size1k), with 16 sectors each of 4 blocks.
• MIFARE Classic 2k are 2048 bytes (MifareClassic.Size2k), with 32 sectors each of 4 blocks.
• MIFARE Classic 4k} are 4096 bytes (MifareClassic.Size4k). The first 32 sectors contain 4 blocks and the last 8 sectors contain 16 blocks.

MIFARE Classic tags require authentication on a per-sector basis before any other I/O operations on that sector can be performed. There are two keys per sector, and ACL bits determine what I/O operations are allowed on that sector after authenticating with a key. and .

Three well-known authentication keys are defined in this class: MifareClassic.KeyDefault, MifareClassic.KeyMifareApplicationDirectory, MifareClassic.KeyNfcForum.

• MifareClassic.KeyDefault is the default factory key for MIFARE Classic.
• MifareClassic.KeyMifareApplicationDirectory is the well-known key for MIFARE Classic cards that have been formatted according to the MIFARE Application Directory (MAD) specification.
• MifareClassic.KeyNfcForum is the well-known key for MIFARE Classic cards that have been formatted according to the NXP specification for NDEF on MIFARE Classic. Implementation of this class on a Android NFC device is optional. If it is not implemented, then Android.Nfc.Tech.MifareClassic will never be enumerated in Android.Nfc.Tag.GetTechList. If it is enumerated, then all Android.Nfc.Tech.MifareClassic I/O operations will be supported, and Ndef.MifareClassic NDEF tags will also be supported. In either case, Android.Nfc.Tech.NfcA will also be enumerated on the tag, because all MIFARE Classic tags are also Android.Nfc.Tech.NfcA.

  See Also
• MifareClassic.AuthenticateSectorWithKeyA(int, System.Byte[])
• MifareClassic.AuthenticateSectorWithKeyB(int, System.Byte[])

Note: Methods that perform I/O operations require the NoType:android/Manifest$permission;Href=../../../../reference/android/Manifest.permission.html#NFC permission.

[Android Documentation]