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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 31 Mar 2016
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      Seriously, this myth won't die. Repeat after me: the Secure Enclave in newer iPhones does *not* help against the FBI attack scenario.

      7 replies 10 retweets 20 likes
    2. SwiftOnSecurity‏ @SwiftOnSecurity 31 Mar 2016
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      Replying to @marcan42

      @marcan42 which FBI attack scenario

      1 reply 0 retweets 0 likes
    3. Hector Martin‏ @marcan42 31 Mar 2016
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      Replying to @SwiftOnSecurity

      @SwiftOnSecurity All of them except jailbreak. The "get Apple to help" scenario, the "NAND replay" scenario, the "FIB the CPU" scenario, etc

      2 replies 0 retweets 2 likes
    4. Ridley @ a safe distance‏ @11rcombs 31 Mar 2016
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      Replying to @marcan42

      @marcan42 @SwiftOnSecurity Yeah, also confused there; isn't SE supposed to solve NAND replay attacks in particular?

      1 reply 0 retweets 0 likes
    5. Hector Martin‏ @marcan42 31 Mar 2016
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      Replying to @11rcombs

      @11rcombs @SwiftOnSecurity It only solves software-based NAND replay attacks because it has an anti-replay EEPROM, which you can replay.

      1 reply 0 retweets 2 likes
    6. Hector Martin‏ @marcan42 31 Mar 2016
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      Replying to @marcan42

      @11rcombs @SwiftOnSecurity So on iPhones with a SEP (SEP=Secure Enclave, SE=unrelated) you just replay two chips instead of one.

      1 reply 0 retweets 2 likes
    7. Ridley @ a safe distance‏ @11rcombs 31 Mar 2016
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      Replying to @marcan42

      @marcan42 @SwiftOnSecurity Oh, the SEP (thanks) NAND isn't on-die?

      1 reply 0 retweets 0 likes
    8. Hector Martin‏ @marcan42 31 Mar 2016
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      Replying to @11rcombs

      @11rcombs @SwiftOnSecurity It has no dedicated NAND. SEP is part of the main SoC. Can't really put flash on the same process.

      1 reply 0 retweets 2 likes
      Hector Martin‏ @marcan42 31 Mar 2016
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      @11rcombs @SwiftOnSecurity They have a dedicated (external) EEPROM to protect against NAND replay mediated by the main CPU (jailbreak-based)

      4:50 PM - 31 Mar 2016
      0 replies 0 retweets 1 like

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