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* [legal] Relicense files under GPL2_OR_LATER_OR_UBDLMichael Brown2015-03-021-1/+1
| | | | | | | Relicense files for which I am the sole author (as identified by util/relicense.pl). Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [rng] Allow HMAC_DRBG to use multiple underlying hash algorithmsMichael Brown2012-03-061-30/+130
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [rng] Add ANS X9.82 Approved Source of Entropy InputMichael Brown2012-02-211-2/+2
| | | | | | | | | | | | | | | | ANS X9.82 specifies several Approved Sources of Entropy Input (SEI). One such SEI uses an entropy source as the Source of Entropy Input, condensing each entropy source output after each GetEntropy call. This can be implemented relatively cheaply in iPXE and avoids the need to allocate potentially very large buffers. (Note that the terms "entropy source" and "Source of Entropy Input" are not synonyms within the context of ANS X9.82.) Use the iPXE API mechanism to allow entropy sources to be selected at compilation time. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [rng] Add ANS X9.82 Approved HMAC_DRBG algorithmMichael Brown2012-01-231-0/+153
ANS X9.82 specifies several Approved algorithms for use in a Deterministic Random Bit Generator (DRBG). One such algorithm is HMAC_DRBG, which can be implemented using the existing iPXE SHA-1 and HMAC functionality. This algorithm provides a maximum security strength of 128 bits. Signed-off-by: Michael Brown <mcb30@ipxe.org>