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Commit Graph

9 Commits

Author SHA1 Message Date
Fabian Schuh
54cc18c493 Steem integration 2016-10-16 01:41:20 +02:00
Alex Beregszaszi
1b8e3d557f Implement ecdsa_get_ethereum_pubkeyhash() 2016-05-23 19:10:06 +01:00
Alex Beregszaszi
d68906ec4e Use proper option for USE_KECCAK via options.h 2016-05-17 18:45:08 +01:00
Pavol Rusnak
9a8e982153
implement bip39 cache 2016-01-19 15:11:57 +01:00
Jochen Hoenicke
7d4cf5cedd Optimized the bn_inverse method.
The new method needs about 30 % less time for prime256k1 and is about
twice as fast for other moduli.  The base algorithm is the same.
The code is also a bit smaller and doesn't need the 8 kb precomputed
table.

Important canges:
1. even/odd distinction so that we need to test only one of the numbers
   for being even.  This also leads to less duplicated code.
2. Allow for shifting by 32 bits at a time in the even test.
3. Pack u,s and v,r into the same array, which saves a bit of stack memory.
4. Don't divide by two after subtraction; this simplifies code.
5. Abort as soon as u,v are equal, instead of subtracting them.
6. Use s instead of r after the loop; no negation needed.
7. New code that divides by 2^k fast without any precomputed values.
2015-03-17 19:17:47 +01:00
Pavol Rusnak
cb9ccc5cf4 remove all references to USE_PUBKEY_VALIDATE 2015-03-12 15:53:41 +01:00
Pavol Rusnak
f4e6010e18 implement BIP32 cache 2015-01-26 19:10:19 +01:00
Pavol Rusnak
03a8925e0f rename BN_PRINT define to USE_BN_PRINT 2014-07-07 21:24:10 +02:00
Pavol Rusnak
b9d5896174 make pubkey validation optional, extract options to separate header 2014-07-07 20:14:36 +02:00