AT88SA10HS-TSU-T Atmel, AT88SA10HS-TSU-T Datasheet - Page 6

• Manufacturer Part Number: AT88SA10HS-TSU-T
• Description: IC HOST AUTHENTICATION SOT23-3
• Manufacturer: Atmel
• Series: CryptoAuthentication™r
• Type: Authentication Chipr

Specifications of AT88SA10HS-TSU-T

• Applications: Networking & Communications
• Mounting Type: Surface Mount
• Package / Case: SOT-23-3
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Interface Type: 1 Wire
• Minimum Operating Temperature: - 40 C
• Number Of Timers: 1
• Program Memory Size: 72 bit
• Program Memory Type: ROM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Media Transmission Encryption
Downloading files from internet sites has become common practice and in many cases the only way to get select
software applications, upgraded features, extensions, or plug-ins. The AT88SA102S offers a solution to protect against
theft of download content. The AT88SA102S CryptoAuthentication is attached to the downloading system, either
embedded in hardware or as a temporary attachable device. The keys protected within the device can be used to
ensure that only the purchaser or authorized consuming system will have the ability to decrypt and use the download.
The download is encrypted and a challenge is sent along with the download. If the installer does not get the correct
response from the CryptoAuthentication the download will be useless. Figure 5 is a graphical representation of
protecting downloads using the AT88SA102S device.
Figure 5.
Often the downloader needs to verify that the download has not been tampered with during transit. This can also be
done using the CryptoAuthentication device. The sending system needs to use the CryptoAuthentication to make a
hash of the download and send the hash along with the download. The download user can then recreate the hash in
the same manor that it was by the sending system. If the two hashes match the downloader has verified that the
download has not been changed since it left the sending system.
CryptoAuthentication™ Product Uses
Encrypted Downloads
8663B–SMEM–3/09