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CCMZ1/CCMZ2
IEEE 802.15.4 (ZigBee™) CCM* AES Cores
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General Description
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Key Features
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IEEE 802.15.4
is the low-power wireless standard that is used by ZigBee
Alliance as a base of its ZigBee™ specification.
The security design of IEEE 802.15.4 uses the CCM* mode of the AES cipher for encryption
and message authentication. The CCMZ cores are tuned
for low-power IEEE 802.15.4 applications.
CCMZ1 core is slightly larger and uses flow-trough
design with key and nonce in the data stream; CCMZ2 core
has dedicated inputs for key and nonce.
Cores contain the base AES core AES1 and are available
for immediate licensing.
The design is fully synchronous and available in both
source and netlist form. |
Small size:
Completely self-contained: does not require external
memory
Supports encryption and decryption,
Includes key expansion (scheduling)
Support for CCM* mode of the AES cipher
Flow-through design with frame header parsing
Test bench provided
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Symbol
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Applications
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IEEE 802.15.4 (ZigBee)
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Pin Description
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Name
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Type
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Description
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CLK
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Input
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Core
clock signal |
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RESET
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Input
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Synchronous
enable signal. When LOW the core ignores all its inputs
and all its outputs must be ignored. |
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MODE
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Input
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Mode.
When HIGH, transmit, when LOW receive |
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START
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Input
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HIGH
starting input data processing |
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READ
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Output
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Read
request for the input data byte |
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DATA_VALID
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Input
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HIGH
when valid data byte present on the input |
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WRITE
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Output
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Write
to the output interface |
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OUT_READY
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Input
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HIGH
when output interface is ready to accept data byte |
| D[7:0] |
Input |
Input
Data |
| k[127:0] |
Input |
AES
key (CCMZ2 only) |
| N[103:0] |
Input |
CCM*
Nonce (CCMZ2 only) |
| Q[7:0] |
Output |
Output
Data |
| DONE |
Output |
Data
processing completed |
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Function Description
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The Advanced Encryption Standard (AES) algorithm is a new
NIST data encryption standard as defined in the http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
The CCMZ implementation fully supports the AES algorithm
for 128 bit keys in Counter Mode (CTR) method of encryption
with CBC message integrity check of all sizes required by
the CCM* protocol of the IEEE 802.15.4 standard.
The core is designed for flow-through operation, with byte-wide
input and output interfaces. For CCMZ1, CCM key and nonce
material precede the frame in the flow of data. Both CCMZ1
and CCMZ2 support encrypt/decrypt modes and includes on-the-fly
key expansion (scheduling).
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Implementation Results
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Area Utilization and Performance
Representative area/resources figures are shown below. |
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Core
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Technology
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Area / Resources
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CCMZ1
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TSMC 0.18 µ
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8K gates
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CCMZ2
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TSMC 0.18 µ
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6K gates
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Export Permits
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| US Bureau of Industry and Security has assigned
the export control classification number 5E002 to our AES
core. The core is eligible for the license exception ENC under
section 740.17(A) and (B)(1) of the export administration
regulations. See the licensing basics page, http://ipcores.com/export_licensing.htm,
for links to US government sites and more details. |
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Deliverables
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HDL Source Licenses
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Netlist Licenses
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- Synthesizable Verilog RTL source code
- Testbench (self-checking)
- Vectors for testbenches
- Expected results
- User Documentation
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- Post-synthesis EDIF
- Testbench (self-checking)
- Vectors for testbenches
- Expected results
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Contact Information
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