| The conditional access system for digital pay-TV enables broadcasters
and network operators to offer various pay services for video, audio
and data transmitted via satellite, cable or terrestrial over-the-air
systems. Conditional access (CA), based on smartcard technology
with a secure integrated circuit, controls the encryption and the
decryption of usage control messages, in order to descramble video,
audio and data signals in a modular and transparent way to the delivery
media. The secure microprocessor contains the confidential data
needed to access the services and, no matter what kind of transmission
is used, the smartcard IC will secure the system with the set-top
box. |
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| USB for even more efficient digital rights management |
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Historically, the limitation of the ISO 7816 smartcard interface
limited the available bandwidth for exchanging video data between
the secure microcontroller/CA and the set-top box.
Today however, due to a USB2.0 full-speed interface, it is possible
to develop DRM/CA applications as well as ADSL pay-TV applications
with “video-on-the-fly” decryption capabilities where
the quantity of data exchanged is of prime importance.
ST offers a wide range of secure MCUs for conditional access applications:
the 8bit secure ST19 family features up to 66KB of EEPROM while
ST22 32-bit secure MCUs deliver up to 256KB of EEPROM. All the
products dedicated to pay-TV applications combine state-of-the-art
security features with a unique encryption performance.
Today these ICs exist in 0.18µm nonvolatile memory technology,
but ST is rapidly expanding to new products in 0.15µm and
0.13µm. |
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| New products for pay-TV and digital rights management
(DRM) |
In response to the specific requirements of the pay-TV market, ST
has recently introduced a new device. The ST19NA18, designed in
0.15µm process technology, has improved built-in protection
against fault injection and a higher speed clock for code execution
and hardware cryptography. The device is expected to receive EAL5+
accreditation.
The USB2.0, full-speed, ST22T064 allows development of DRM/CA and
ADSL pay-TV applications with critical decryption capabilities,
allowing a powerful exchange of data.
The second key benefit of the ST22T064 is a very high level of integration,
thanks to its on board clock recovery, eliminating the requirement
for external, costly discrete components and a crystal. The ST22T064B
will feature the option of either SPI bus interface or GPIO.
The ability to offer smartcard ICs in form factors other than traditional
micromodules is one of the keys to ST’s success. With packages
such as SO20, TQFP44 and BGA, ST has a unique value proposition
combining integration and security. |
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| Available ICs for conditional access on ST19
and ST22 platform |
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EEPROM |
RAM |
Cryptography |
Interface |
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64KB |
8KB |
2KB |
EDES |
ISO 7816-3 |
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112KB |
8KB |
4KB |
EDES, PKI |
ISO 7816-3 |
|
112KB |
18KB |
4KB |
EDES, PKI |
ISO 7816-3 |
|
224KB |
34KB |
6KB |
EDES, PKI |
ISO 7816-3 |
|
224KB |
66KB |
6KB |
EDES, AES, PKI |
ISO 7816-3 |
|
228KB |
64KB |
16KB |
EDES, AES, PKI |
USB/ISO 7816-12/CCID |
|
374KB |
72KB |
8KB |
EDES, AES, PKI |
ISO 7816-3 |
|
374KB |
256KB |
16KB |
EDES, AES, PKI |
ISO 7816-3 |
| New products
|
|
374KB |
144KB |
12KB |
EDES, AES, PKI |
ISO 7816-3 |
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| Brochures and Product Guides |
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