让各个编码转换的方法 (b58_to_hex, hex_to_b32, ...) 在错误情况下返回 '' 而不是 null。不知道会不会导致其它地方的问题。

test.js

@@ -16,11 +16,7 @@ function ECPointDecompress (comp) {
   var x = new bigInt(comp.substring(2), 16)
   // y mod p = +-(x^3 + 7)^((p+1)/4) mod p
   console.log('ECP x=', x.toString(), ' = ', x.toString(16))
-  var y = x
-    .modPow(3, prime)
-    .add(7)
-    .mod(prime)
-    .modPow(pIdent, prime)
+  var y = x.modPow(3, prime).add(7).mod(prime).modPow(pIdent, prime)
   // If the parity doesn't match it's the *other* root
   console.log('ECP y=', y.toString(), ' = ', y.toString(16))
   if (y.mod(2).toJSNumber() !== signY) {
@@ -40,32 +36,17 @@ BigNumber = require('bignumber.js')
 function uncompressPubkey (comp) {
   // Consts for P256 curve. Adjust accordingly
   const prime = new BigNumber('fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f', 16).integerValue(),
-    pIdent = prime
-      .plus(1)
-      .idiv(4)
-      .integerValue()
+    pIdent = prime.plus(1).idiv(4).integerValue()
 
   console.log('pIdent=', pIdent.toString(), ' = ', pIdent.toString(16))
   var signY = new Number(comp[1]) - 2
   var x = new BigNumber(comp.substring(2), 16).integerValue()
   console.log('x=', x.toString(), ' = ', x.toString(16))
   // y^2 = x^3 - 3x + b
-  var y = x
-    .pow(3)
-    .mod(prime)
-    .plus(7)
-    .mod(prime)
-    .pow(pIdent)
-    .mod(prime)
-    .integerValue()
+  var y = x.pow(3).mod(prime).plus(7).mod(prime).pow(pIdent).mod(prime).integerValue()
   console.log('y=', y.toString(), ' = ', y.toString(16))
   // If the parity doesn't match it's the *other* root
-  if (
-    y
-      .mod(2)
-      .integerValue()
-      .toNumber() !== signY
-  ) {
+  if (y.mod(2).integerValue().toNumber() !== signY) {
     // y = prime - y
     y = prime.minus(y).integerValue()
   }
@@ -129,10 +110,7 @@ crypto.createCipheriv('aes-256-cfb', Buffer.from(acc.prikey, 'hex'), Buffer.allo
 ////////////////////// crypto + PEM
 
 toPEM = function (kp) {
-  let pubkey = crypto
-    .createECDH('secp256k1')
-    .setPrivateKey(kp.prikey, 'hex')
-    .getPublicKey('hex', 'compressed')
+  let pubkey = crypto.createECDH('secp256k1').setPrivateKey(kp.prikey, 'hex').getPublicKey('hex', 'compressed')
   console.log('ECDH created publickey = ', pubkey)
   let mykey = '308187020100301306072a8648ce3d020106082a8648ce3d030107046d306b0201010420' + kp.prikey + 'a144034200' + pubkey
   console.log(mykey)