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When compiling for aosp_fugu-userdebug, clang aborted in pass:

  Running pass 'Function Pass Manager' on module 'system/core/libmincrypt/p256_ec.c'.
  Running pass 'X86 DAG->DAG Instruction Selection' on function '@felem_square'

BUG: 18790528
Change-Id: I416c07cae4c1a9743655bc45bd33c10a5cc9b41f

The declaration is useless and triggers a warning with clang 3.5 (in
code that's built with -Werror)

Change-Id: I8fc42178df264509dcce6e1f1ba318bf849307e3
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>

- deal with implict declaration issue
- deal with some -Wunused issues

Change-Id: I253f1412a696c4811ade70a931fb1c01b31c62a5

This adds a small EC library that is capable of verifying a signature of
SHA256 with ECDSA on the NIST P-256 curve.

Change-Id: I2a16639c92a77e8e4783c47ffbc56676de56eb59

The e=3 and e=65537 implementations are nearly identical, refactor
them down into one.

(cherry picked from commit 8fdbf976)

Change-Id: I9f858204d52a0ae880170d955bf8f29fed57ee94

- adds a library to compute the SHA-256 hash

- updates the RSA verifier to take an argument specifying either SHA-1
  or SHA-256

- updates DumpPublicKey to with new "key" version numbers for
  specifying SHA-256

- adds new argument to adb auth code to maintain existing behavior

(cherry picked from commit 515e1639)

Change-Id: Ib35643b3d864742e817ac6e725499b451e45afcf

The e=3 and e=65537 implementations are nearly identical, refactor
them down into one.

Change-Id: I537a368a6cc195f373b9354d7472957fd683beea

- adds a library to compute the SHA-256 hash

- updates the RSA verifier to take an argument specifying either SHA-1
  or SHA-256

- updates DumpPublicKey to with new "key" version numbers for
  specifying SHA-256

- adds new argument to adb auth code to maintain existing behavior

Change-Id: I5b1406cf57c2b8993f6032eda3e29139f7740839

DumpPublicKey doesn't need a base64 encoder for anything; remove the
import to avoid deprecation warnings.

Change-Id: I7e01b9d77bb66bb99cb3357c886cc4e2e63de6ae

The output produced by DumpPublicKey now has a version tag on each
line (ie, each key).  The existing keys are retroactively dubbed
"version 1", and we add a version 2 for 2048-bit e=65537 keys.

Change-Id: I204ec615c8f2346670220a1aeb99269e4abd5f81

Write the 32-bit chunks of N and RR as unsigned, so we get:

  {64,0xc926ad21,{1795090719,2141396315,950055447,2581568430,4268923165,...

instead of:

  {64,0xc926ad21,{1795090719,2141396315,950055447,-1713398866,-26044131,...

Change-Id: I575224fd7f7c34e06a1b6ae976eaa0bef41d2942

Macs don't have byteswap.h or endian.h.  Change conditionals to only
use the faster SHA-1 code on little-endian machines with byteswap.h.

This optimized implementation of the SHA1 algorithm is about 28%
faster than the old one (on sapphire hardware) but assumes
little-endianness.  Add it, but continue using the old implementation
on big-endian hardware.