openslx-ng/ipxe.git/src/crypto/entropy.c, branch v1.20.1

[rng] Use fixed-point calculations for min-entropy quantities

2018-03-20T18:56:01+00:00

We currently perform various min-entropy calculations using build-time floating-point arithmetic. No floating-point code ends up in the final binary, since the results are eventually converted to integers and asserted to be compile-time constants. Though this mechanism is undoubtedly cute, it inhibits us from using "-mno-sse" to prevent the use of SSE registers by the compiler. Fix by using fixed-point arithmetic instead. Signed-off-by: Michael Brown

[legal] Relicense files under GPL2_OR_LATER_OR_UBDL

2015-03-02T14:17:31+00:00

Relicense files for which I am the sole author (as identified by util/relicense.pl). Signed-off-by: Michael Brown

[legal] Update FSF mailing address in GPL licence texts

2012-07-20T18:55:45+00:00

Suggested-by: Daniel P. Berrange Signed-off-by: Michael Brown

[rng] Allow entropy_enable() to return an error

2012-03-18T17:05:37+00:00

Signed-off-by: Michael Brown

[rng] Allow hash_df() to accept multiple underlying hash algorithms

2012-03-05T23:23:45+00:00

Signed-off-by: Michael Brown

[rng] Add ANS X9.82 mandatory start-up tests

2012-02-21T12:42:45+00:00

ANS X9.82 specifies that the start-up tests shall consist of at least one full cycle of the continuous tests. Signed-off-by: Michael Brown

[rng] Add ANS X9.82 mandatory continuous tests

2012-02-21T12:42:45+00:00

ANS X9.82 specifies two mandatory continuous tests to be performed upon the noise source. Signed-off-by: Michael Brown

[rng] Add ANS X9.82 Approved Source of Entropy Input

2012-02-21T12:42:38+00:00

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

[rng] Add dummy entropy source

2012-01-23T15:07:46+00:00

Cryptographic random number generation requires an entropy source, which is used as the input to a Deterministic Random Bit Generator (DRBG). iPXE does not currently have a suitable entropy source. Provide a dummy source to allow the DRBG code to be implemented. Signed-off-by: Michael Brown