-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Aloha!
Joachim Strömbergson wrote: > I would suggest that the ability to turn the entropy source on or off > is given to the FPGA. (Which of course could expose the control via > the core API). If the control is done by the CPU or Tamper-MCU, then > we could easily end up reseeding the CPRNG using only the ring > oscillator based entropy provider. Having support for turning the > entropy source off ana on adds quite a lot of complexity in terms of > warm up times and startup testing vs starvation of RNG output and > race problems. > > When I look in Rev02, sheet 03 I assumed there would be a control > signal for this function, but I don't see it. Has it not been > included? Sorry for the confusion, That functionality is present on sheet 02. Suggestion is to connect FPGA_ENTROPY_DISABLE to pin on FPGA. - -- Med vänlig hälsning, Yours Joachim Strömbergson - Alltid i harmonisk svängning. ======================================================================== Joachim Strömbergson Secworks AB joac...@secworks.se ======================================================================== -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBCAAGBQJWpj8YAAoJEF3cfFQkIuyN7ycP/0X6wTk3CMcK0xQwiHuZUrnD JPtYwztgu5SqYsWhMc24wvvbQ/Gj/3TkQXyeXt89+ni2zUg/osyEhYvLtE5rRL7H 9k38jLpdvrcBjsarZ1hRfthxGJrHNhLsVDJKaI6+MtHEP96EXvZDEqJirPYEGzeX ElSDMibluyXqVovzYOk0cdFE69dPtq6h7rvVtIKiSdg8ZiWzGOuKUCCUiOEA8hIj puS6h61ub2H4r9CzjnEaj8EgcbGfBY10KLSz3ae8lPFxT8iJPrbHeTFMtiurtD6Z Q00T664IFxHJGDTm7Yv1MhnhHK+9xcBulRhRqVPC0a7yQcjoBhDL4jVV20MaB065 +U1gQIPJbdSyiANIm72WH+4t9inOTO9Q/7O8gdc4zHA2X/UUmxAfRp8OGrUI3o7m 9xORGBbhHsZX6fdsN5+HNUYZ/uN+S1l8pAyCuPqZHisrLnwaR6I3PbSiBBxtARh8 9yr26Av8CYGsfSr/z9A/vnsQsmf/71Ygea169/XakpnLxLj5uoFwKGMzWNt0RBA+ IufZVdiz9uA/N7UltRJacyHXTzVVs2IAmkY7s3GmL0rAkqHECgRcTW7cwDhoar7L 6Q49gjabfXJ+tMBG0avIoYpzXJTNFiACiIRJy3xJasf1zvnI/H1c86T1otzEy7Lw FEdFiMVwsPVQNN0EKHtE =6CaS -----END PGP SIGNATURE----- _______________________________________________ Tech mailing list Tech@cryptech.is https://lists.cryptech.is/listinfo/tech
