npm/tic-crypto
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陆柯 2020-03-14 16:35:39 +08:00
parent 0baa845a16
commit fdeb2cca9b
1 changed files with 31 additions and 10 deletions
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41
index.js
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@ -107,13 +107,13 @@ module.exports = {
if (this.isHashable(data) && typeof(key)==='string') {
let inputEncoding=my.INPUT_LIST.indexOf(input)>=0?input:my.INPUT // 'utf8' by default, 'ascii', 'latin1' for string or ignored for Buffer/TypedArray/DataView
let outputEncoding=(output==='buf')?undefined:(my.OUTPUT_LIST.indexOf(output)>=0?output:my.OUTPUT) // 'latin1', 'base64', 'hex' by default or 'buf' to Buffer explicitly
let cipher=crypto.createCipher(
let ciph=crypto.createCipher(
my.CIPHER_LIST.indexOf(cipher)>=0?cipher:my.CIPHER,
this.hash(key))
if (typeof(data)!=='string' && !(data instanceof Buffer) && !(data instanceof DataView))
data=JSON.stringify(data)
let encrypted = cipher.update(data, inputEncoding, outputEncoding)
encrypted += cipher.final(outputEncoding) // 但是 Buffer + Buffer 还是会变成string
let encrypted = ciph.update(data, inputEncoding, outputEncoding)
encrypted += ciph.final(outputEncoding) // 但是 Buffer + Buffer 还是会变成string
return encrypted
}
}else if (keytype==='pubkey') { // data 应当是 utf8 的字符串。// 但在浏览器里不能使用 Failed to execute 'encrypt' on 'SubtleCrypto': The provided value is not of type '(ArrayBuffer or ArrayBufferView)'
@ -141,9 +141,13 @@ module.exports = {
}
}
return decrypted
}else if (keytype==='seckey'){ // cipherobject 需要是 eccrypto 自身encrypt方法返回的对象
}
}else if (keytype==='seckey'){ // cipherobject 需要是 eccrypto 自身encrypt方法返回的对象
try {
let plaindata = await eccrypto.decrypt(Buffer.from(key, 'hex'), data) // eccrypto 需要调用 Buffer.compare 方法，不能在这里直接用 hex2buf
return plaindata.toString('utf8')
}catch (exception){ // eccrypto 对无法解密的，会抛出异常
return null
}
}
return null
@ -192,10 +196,11 @@ module.exports = {
try {
let result = await eccrypto.verify(Buffer.from(pubkey, 'hex'), this.hash(data, {output:'buf'}), Buffer.from(signature, 'hex')) // 如果给signature添加1位hex，eccrypto 的 verify结果也是true! 估计因为一位hex不被转成字节。
return true
}catch(exception){
}catch(exception){ // 对能够验证的，eccrypto返回 null；对无法验证的，抛出异常
return false
}
}
return false
}
if (this.isHashable(data) && this.isSignature(signature) && this.isPubkey(pubkey) && signature.length===128){ // nacl
option.output='buf' // 哈希必须输出为 buffer
@ -284,6 +289,24 @@ module.exports = {
return null
}
,
seed2path(seed, {coin='TIC'}={coin:'TIC'}){
// 路径规范 BIP44: m/Purpose'/Coin'/Account'/Change/Index,
// 但实际上 Purpose, Coin 都可任意定；' 可有可无；
// Account 最大到 parseInt(0x7FFFFFFF, 16), Coin/Index最大到 parseInt(0xFFFFFFFF, 16)
// 后面还可继续延伸 /xxx/xxx/xxx/...... let hash=this.hash(seed, {hasher:'md5'})
let part0=parseInt(hash.slice(0,6), 16)
let part1=parseInt(hash.slice(6,12), 16)
let part2=parseInt(hash.slice(12,18), 16)
let part3=parseInt(hash.slice(18,24), 16)
let part4=parseInt(hash.slice(24,32), 16)
switch (coin){
case 'BTC': return `m/44'/0'/${part0}'/${part1}/${part2}/${part3}/${part4}`
case 'ETH': return `m/44'/60'/${part0}'/${part1}/${part2}/${part3}/${part4}`
case 'TIC':
default: return `m/44'/66'/${part0}'/${part1}/${part2}/${part3}/${part4}`
}
}
,
secword2account(secword, option){ // account 比 keypair 多了 address 字段。
option=option||{}
option.coin=my.COIN_LIST.indexOf(option.coin)>=0?option.coin:my.COIN
@ -552,11 +575,9 @@ module.exports = {
}
,
padStart(string, targetLength, symbol){ // 2020-03: 发现在浏览器里，还不支持 string.padStart()，只好自己写个暂代。
let stringLength = string.length
if (stringLength < targetLength) {
for (let index = 1; index <= targetLength-stringLength; index++) {
string = symbol + string
}
let padLength = targetLength - string.length
for (let index = 1; index <= padLength; index++) {
string = symbol + string
}
return string
}