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path: root/crypto/signature_cgo.go
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* Change import go github.com/dexon-foundation/dexonWei-Ning Huang2019-04-091-2/+2
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* crypto, crypto/secp256k1: add CompressPubkey (#15626)Felix Lange2017-12-151-0/+5
| | | | This adds the inverse to DecompressPubkey and improves a few minor details in crypto/secp256k1.
* crypto: add DecompressPubkey, VerifySignature (#15615)Felix Lange2017-12-061-0/+18
| | | | | | | We need those operations for p2p/enr. Also upgrade github.com/btcsuite/btcd/btcec to the latest version and improve BenchmarkSha3. The benchmark printed extra output that confused tools like benchstat and ignored N.
* all: update license informationFelix Lange2017-04-141-1/+1
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* all: unify big.Int zero checks, use common/math in more places (#3716)Felix Lange2017-02-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | * common/math: optimize PaddedBigBytes, use it more name old time/op new time/op delta PaddedBigBytes-8 71.1ns ± 5% 46.1ns ± 1% -35.15% (p=0.000 n=20+19) name old alloc/op new alloc/op delta PaddedBigBytes-8 48.0B ± 0% 32.0B ± 0% -33.33% (p=0.000 n=20+20) * all: unify big.Int zero checks Various checks were in use. This commit replaces them all with Int.Sign, which is cheaper and less code. eg templates: func before(x *big.Int) bool { return x.BitLen() == 0 } func after(x *big.Int) bool { return x.Sign() == 0 } func before(x *big.Int) bool { return x.BitLen() > 0 } func after(x *big.Int) bool { return x.Sign() != 0 } func before(x *big.Int) int { return x.Cmp(common.Big0) } func after(x *big.Int) int { return x.Sign() } * common/math, crypto/secp256k1: make ReadBits public in package math
* crypto: add btcec fallback for sign/recover without cgo (#3680)Felix Lange2017-02-181-0/+64
* vendor: add github.com/btcsuite/btcd/btcec * crypto: add btcec fallback for sign/recover without cgo This commit adds a non-cgo fallback implementation of secp256k1 operations. * crypto, core/vm: remove wrappers for sha256, ripemd160