Method and system for ensuring security of code in a system on a chip

The present invention provides for validating downloaded code. Code is transferred to a volatile memory of a system on a chip from a source. The volatile memory is decoupled from the source of the transferred code through employment of an isolation bus. An embedded security value, associated with th...

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1. Verfasser:	CRAFT DAVID JOHN
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS
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creator	CRAFT DAVID JOHN
description	The present invention provides for validating downloaded code. Code is transferred to a volatile memory of a system on a chip from a source. The volatile memory is decoupled from the source of the transferred code through employment of an isolation bus. An embedded security value, associated with the downloaded code, is determined. The security value is compared to an unlock sequence stored within the non-volatile memory in the system on a chip. If the security value matches the unlock sequence, the downloaded code is allowed access to secure data stored in the non-volatile memory. If the security value does not match the unlock sequence, the downloaded code is denied access to the secure data stored in the non-volatile memory.
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The volatile memory is decoupled from the source of the transferred code through employment of an isolation bus. An embedded security value, associated with the downloaded code, is determined. The security value is compared to an unlock sequence stored within the non-volatile memory in the system on a chip. If the security value matches the unlock sequence, the downloaded code is allowed access to secure data stored in the non-volatile memory. If the security value does not match the unlock sequence, the downloaded code is denied access to the secure data stored in the non-volatile memory.</description><edition>7</edition><language>eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC DIGITAL DATA PROCESSING ; PHYSICS</subject><creationdate>2004</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20041118&DB=EPODOC&CC=US&NR=2004230818A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20041118&DB=EPODOC&CC=US&NR=2004230818A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CRAFT DAVID JOHN</creatorcontrib><title>Method and system for ensuring security of code in a system on a chip</title><description>The present invention provides for validating downloaded code. Code is transferred to a volatile memory of a system on a chip from a source. The volatile memory is decoupled from the source of the transferred code through employment of an isolation bus. An embedded security value, associated with the downloaded code, is determined. The security value is compared to an unlock sequence stored within the non-volatile memory in the system on a chip. If the security value matches the unlock sequence, the downloaded code is allowed access to secure data stored in the non-volatile memory. If the security value does not match the unlock sequence, the downloaded code is denied access to the secure data stored in the non-volatile memory.</description><subject>CALCULATING</subject><subject>COMPUTING</subject><subject>COUNTING</subject><subject>ELECTRIC DIGITAL DATA PROCESSING</subject><subject>PHYSICS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2004</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHD1TS3JyE9RSMxLUSiuLC5JzVVIyy9SSM0rLi3KzEtXKE5NBjJKKhXy0xSS81NSFTLzFBJhKvNB7OSMzAIeBta0xJziVF4ozc2g7OYa4uyhm1qQH59aXJCYnJqXWhIfGmxkYGBiZGxgYWjhaGhMnCoAaBozSg</recordid><startdate>20041118</startdate><enddate>20041118</enddate><creator>CRAFT DAVID JOHN</creator><scope>EVB</scope></search><sort><creationdate>20041118</creationdate><title>Method and system for ensuring security of code in a system on a chip</title><author>CRAFT DAVID JOHN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US2004230818A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2004</creationdate><topic>CALCULATING</topic><topic>COMPUTING</topic><topic>COUNTING</topic><topic>ELECTRIC DIGITAL DATA PROCESSING</topic><topic>PHYSICS</topic><toplevel>online_resources</toplevel><creatorcontrib>CRAFT DAVID JOHN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>CRAFT DAVID JOHN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method and system for ensuring security of code in a system on a chip</title><date>2004-11-18</date><risdate>2004</risdate><abstract>The present invention provides for validating downloaded code. Code is transferred to a volatile memory of a system on a chip from a source. The volatile memory is decoupled from the source of the transferred code through employment of an isolation bus. An embedded security value, associated with the downloaded code, is determined. The security value is compared to an unlock sequence stored within the non-volatile memory in the system on a chip. If the security value matches the unlock sequence, the downloaded code is allowed access to secure data stored in the non-volatile memory. If the security value does not match the unlock sequence, the downloaded code is denied access to the secure data stored in the non-volatile memory.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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subjects	CALCULATING COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING PHYSICS
title	Method and system for ensuring security of code in a system on a chip
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