How to use the tiny-secp256k1.signWithEntropy function in tiny-secp256k1
To help you get started, we’ve selected a few tiny-secp256k1 examples, based on popular ways it is used in public projects.
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bitcoinjs / bip32 / ts-src / bip32.ts View on Github 
sign(hash: Buffer, lowR?: boolean): Buffer {
if (!this.privateKey) throw new Error('Missing private key');
if (lowR === undefined) lowR = this.lowR;
if (lowR === false) {
return ecc.sign(hash, this.privateKey);
} else {
let sig = ecc.sign(hash, this.privateKey);
const extraData = Buffer.alloc(32, 0);
let counter = 0;
// if first try is lowR, skip the loop
// for second try and on, add extra entropy counting up
while (sig[0] > 0x7f) {
counter++;
extraData.writeUIntLE(counter, 0, 6);
sig = ecc.signWithEntropy(hash, this.privateKey, extraData);
}
return sig;
}
}sign(hash: Buffer, lowR?: boolean): Buffer {
if (!this.__D) throw new Error('Missing private key');
if (lowR === undefined) lowR = this.lowR;
if (lowR === false) {
return ecc.sign(hash, this.__D);
} else {
let sig = ecc.sign(hash, this.__D);
const extraData = Buffer.alloc(32, 0);
let counter = 0;
// if first try is lowR, skip the loop
// for second try and on, add extra entropy counting up
while (sig[0] > 0x7f) {
counter++;
extraData.writeUIntLE(counter, 0, 6);
sig = ecc.signWithEntropy(hash, this.__D, extraData);
}
return sig;
}
}throw new Error('Missing private key');
if (lowR === undefined)
lowR = this.lowR;
if (lowR === false) {
return ecc.sign(hash, this.privateKey);
}
else {
let sig = ecc.sign(hash, this.privateKey);
const extraData = Buffer.alloc(32, 0);
let counter = 0;
// if first try is lowR, skip the loop
// for second try and on, add extra entropy counting up
while (sig[0] > 0x7f) {
counter++;
extraData.writeUIntLE(counter, 0, 6);
sig = ecc.signWithEntropy(hash, this.privateKey, extraData);
}
return sig;
}
}
verify(hash, signature) {sign(hash, lowR = false) {
if (!this.__D) throw new Error('Missing private key');
if (lowR === false) {
return ecc.sign(hash, this.__D);
} else {
let sig = ecc.sign(hash, this.__D);
const extraData = Buffer.alloc(32, 0);
let counter = 0;
// if first try is lowR, skip the loop
// for second try and on, add extra entropy counting up
while (sig[0] > 0x7f) {
counter++;
extraData.writeUIntLE(counter, 0, 6);
sig = ecc.signWithEntropy(hash, this.__D, extraData);
}
return sig;
}
}
verify(hash, signature) {tiny-secp256k1
A tiny secp256k1 native/JS wrapper
