Mifare 1k Access Bits

ACLs (HEX)

Data Block	Bits	Read	Write	Incr.	D./T./R.
Data Block	Remarks
{{ blk }}	{{ acl >= 0 ? `00${acl.toString(2)}`.slice(-3) : '?' }}	{{ toPrivStr(DATA_BLK_READ, acl) }}	{{ toPrivStr(DATA_BLK_WRITE, acl) }}	{{ toPrivStr(DATA_BLK_INCR, acl) }}	{{ toPrivStr(DATA_BLK_DTR, acl) }}
{{ blk }}	{{ DATA_BLK_REMARKS[acl] ?? '?' }}

Trailer Block Bits	Key A Read	Key A Write	ACLs Read	ACLs Write	Key B Read	Key B Write
Trailer Block Bits	Remarks
{{ acl >= 0 ? `00${acl.toString(2)}`.slice(-3) : '?' }}	{{ toPrivStr(TRAILER_BLK_A_READ, acl) }}	{{ toPrivStr(TRAILER_BLK_AB_WRITE, acl) }}	{{ toPrivStr(TRAILER_BLK_ACLS_READ, acl) }}	{{ toPrivStr(TRAILER_BLK_ACLS_WRITE, acl) }}	{{ toPrivStr(TRAILER_BLK_B_READ, acl) }}	{{ toPrivStr(TRAILER_BLK_AB_WRITE, acl) }}
{{ acl >= 0 ? `00${acl.toString(2)}`.slice(-3) : '?' }}	{{ TRAILER_BLK_REMARKS[acl] ?? '?' }}

If key B is readable data, it cannot serve for authentication. Please refer to NXP MF1S50YYX_V1.pdf for more information.

Writing an incorrect value to the access condition bits can make the sector inaccessible.

Bits	Read	Write	Incr.	D./T./R.
Bits	Remarks
{{ acl >= 0 ? `00${acl.toString(2)}`.slice(-3) : '?' }}	{{ toPrivStr(DATA_BLK_READ, acl) }}	{{ toPrivStr(DATA_BLK_WRITE, acl) }}	{{ toPrivStr(DATA_BLK_INCR, acl) }}	{{ toPrivStr(DATA_BLK_DTR, acl) }}
{{ acl >= 0 ? `00${acl.toString(2)}`.slice(-3) : '?' }}	{{ DATA_BLK_REMARKS[acl] ?? '?' }}

Click table row to pick new ACL. If key B is readable data, it cannot serve for authentication.

Trailer Block Bits	Key A Read	Key A Write	ACLs Read	ACLs Write	Key B Read	Key B Write
Trailer Block Bits	Remarks
{{ acl >= 0 ? `00${acl.toString(2)}`.slice(-3) : '?' }}	{{ toPrivStr(TRAILER_BLK_A_READ, acl, acl) }}	{{ toPrivStr(TRAILER_BLK_AB_WRITE, acl, acl) }}	{{ toPrivStr(TRAILER_BLK_ACLS_READ, acl, acl) }}	{{ toPrivStr(TRAILER_BLK_ACLS_WRITE, acl, acl) }}	{{ toPrivStr(TRAILER_BLK_B_READ, acl, acl) }}	{{ toPrivStr(TRAILER_BLK_AB_WRITE, acl, acl) }}
{{ acl >= 0 ? `00${acl.toString(2)}`.slice(-3) : '?' }}	{{ TRAILER_BLK_REMARKS[acl] ?? '?' }}

Click table row to pick new ACL. If key B is readable data, it cannot serve for authentication.