添加 cid 转换函数
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447a3eb442
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125
index.js
125
index.js
@ -31,6 +31,17 @@ my.INPUT = 'utf8' // 默认的加密方法的明文格式。utf8 能够兼容 la
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my.INPUT_LIST = ['utf8', 'ascii', 'latin1'] // ignored for Buffer/TypedArray/DataView
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my.COIN = 'TIC' // 默认的币种
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my.COIN_LIST = ['TIC', 'EXT', 'BTC', 'ETH']
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my.REGEXP_ALPHABET = {
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hex: /^[0-9a-fA-F]+$/,
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b32: /^[A-Za-z2-7=]+$/,
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b32h: /^[0-9A-Va-v=]+$/,
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b36: /^[0-9A-Z-a-z]+$/,
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b58: /^[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]+$/,
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b62: /^[A-Za-z0-9]+$/,
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b64: /^[A-Za-z0-9\+\/=]+$/,
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b64u: /^[A-Za-z0-9\-_]+$/,
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b64t: /^[A-Za-z0-9\._]+$/,
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}
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/**
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*
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@ -164,7 +175,10 @@ class TICrypto {
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if (salt && typeof salt === 'string') data = data + this.hash(salt)
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let inputEncoding = input // my.INPUT_LIST.indexOf(input)>=0?input:my.INPUT // 'utf8', 'ascii' or 'latin1' for string data, default to utf8 if not specified; ignored for Buffer, TypedArray, or DataView.
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let outputEncoding = output === 'buf' ? undefined : output // (my.OUTPUT_LIST.indexOf(output)>=0?output:my.OUTPUT) // output: 留空=》默认输出hex格式；或者手动指定 'buf', hex', 'latin1' or 'base64'
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return crypto.createHash(hasher).update(data, inputEncoding).digest(outputEncoding)
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return crypto
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.createHash(hasher)
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.update(data, inputEncoding)
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.digest(outputEncoding)
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}
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return null
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}
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@ -349,7 +363,10 @@ class TICrypto {
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// 如果使用其他机制，例如密码、随机数，不使用secword，也可生成keypair
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if (this.isHashable(pass)) {
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hasher = my.HASHER_LIST.indexOf(hasher) >= 0 ? hasher : my.HASHER
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var hashBuf = crypto.createHash(hasher).update(pass).digest()
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var hashBuf = crypto
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.createHash(hasher)
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.update(pass)
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.digest()
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var keypair = nacl.sign.keyPair.fromSeed(hashBuf) // nacl的seed要求是32字节
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return {
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hash: hashBuf.toString('hex'),
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@ -412,7 +429,10 @@ class TICrypto {
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if (tool === 'nacl') {
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// 采用自己的算法：bip39算法从secword到种子，hash后用 nacl.sign.keyPair.fromSeed()方法。
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hasher = my.HASHER_LIST.indexOf(hasher) >= 0 ? hasher : my.HASHER
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let hashBuf = crypto.createHash(hasher).update(this.secword2seed(secword, pass)).digest()
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let hashBuf = crypto
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.createHash(hasher)
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.update(this.secword2seed(secword, pass))
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.digest()
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let keypair = nacl.sign.keyPair.fromSeed(hashBuf) // nacl.sign.keyPair.fromSeed 要求32字节的种子，而 this.secword2seed生成的是64字节种子，所以要先做一次sha256
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return {
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coin: coin,
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@ -622,8 +642,14 @@ class TICrypto {
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.digest('hex')
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.slice(-40)
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} else {
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let h256 = crypto.createHash('sha256').update(Buffer.from(pubkey, 'hex')).digest()
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let h160 = crypto.createHash('ripemd160').update(h256).digest('hex')
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let h256 = crypto
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.createHash('sha256')
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.update(Buffer.from(pubkey, 'hex'))
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.digest()
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let h160 = crypto
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.createHash('ripemd160')
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.update(h256)
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.digest('hex')
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return h160
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}
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}
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@ -647,7 +673,9 @@ class TICrypto {
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if (coin === 'ETH') {
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// 对以太坊，按照 EIP55，把纯位置转换为大小写敏感能自我验证的hex地址。仍然为20节=40符。
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position = position.toLowerCase().replace('0x', '')
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let hash = keccak('keccak256').update(position).digest('hex')
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let hash = keccak('keccak256')
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.update(position)
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.digest('hex')
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address = '0x'
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for (var i = 0; i < position.length; i++) {
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if (parseInt(hash[i], 16) >= 8) {
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@ -720,15 +748,18 @@ class TICrypto {
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* 地址和PubKeyHash(即position)之间能互相转化
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*/
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static address2position () {
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if (/^0x[\da-fA-F]{40}$/.test(address)) { // ETH
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if (/^0x[\da-fA-F]{40}$/.test(address)) {
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// ETH
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// todo: 如果是大小写敏感的，进行有效性验证
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return address.toLowerCase()
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} else if (/^[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{26,34}$/.test(address)) { // BTC
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} else if (/^[123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz]{26,34}$/.test(address)) {
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// BTC
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let hex = this.b58c_to_hex(address)
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if (hex) {
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return hex.slice(2) // 去除网络前缀
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}
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} else if (/^[Tt][0-9a-zA-Z\._]{31}$/.test(address)) { // TIC
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} else if (/^[Tt][0-9a-zA-Z\._]{31}$/.test(address)) {
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// TIC
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// 格式合法
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let hex = this.b64t_to_hex(address)
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let [all, prefix, position, checksum] = hex.match(/^([\da-fA-F]{2})([\da-fA-F]{40})([\da-fA-F]{6})$/)
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@ -1045,7 +1076,10 @@ class TICrypto {
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// hash为64hex字符，sig为128hex字符。返回用hex表达的距离。
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if (this.isSignature(sig) && this.isHash(hash)) {
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var hashSig = this.hash(sig) // 把签名也转成32字节的哈希，同样长度方便比较
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return new BigInt(hash, 16).subtract(new BigInt(hashSig, 16)).abs().toString(16)
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return new BigInt(hash, 16)
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.subtract(new BigInt(hashSig, 16))
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.abs()
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.toString(16)
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}
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return null
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}
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@ -1264,7 +1298,10 @@ class TICrypto {
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* @returns
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*/
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static b64_to_b64t (b64 = '') {
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return b64.replace(/\+/g, '.').replace(/\//g, '_').replace(/=/g, '')
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return b64
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.replace(/\+/g, '.')
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.replace(/\//g, '_')
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.replace(/=/g, '')
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}
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static b64t_to_b64 (b64t = '') {
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@ -1338,7 +1375,9 @@ class TICrypto {
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static hex_to_eip55 (hex) {
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if (/^(0x)?[\da-fA-F]+$/.test(hex)) {
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hex = hex.toLowerCase().replace('0x', '')
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let hash = keccak('keccak256').update(hex).digest('hex')
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let hash = keccak('keccak256')
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.update(hex)
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.digest('hex')
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let result = ''
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for (var i = 0; i < hex.length; i++) {
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if (parseInt(hash[i], 16) >= 8) {
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@ -1394,13 +1433,73 @@ class TICrypto {
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const pIdent = new BigInt('3fffffffffffffffffffffffffffffffffffffffffffffffffffffffbfffff0c', 16) // prime.add(1).divide(4);
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var signY = new Number(compressed[1]) - 2
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var x = new BigInt(compressed.substr(2), 16)
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var y = x.modPow(3, prime).add(7).mod(prime).modPow(pIdent, prime) // y mod p = +-(x^3 + 7)^((p+1)/4) mod p
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var y = x
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.modPow(3, prime)
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.add(7)
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.mod(prime)
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.modPow(pIdent, prime) // y mod p = +-(x^3 + 7)^((p+1)/4) mod p
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if (y.mod(2).toJSNumber() !== signY) {
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// If the parity doesn't match it's the *other* root
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y = prime.subtract(y) // y = prime - y
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}
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return '04' + this.padStart(x.toString(16), 64, '0') + this.padStart(y.toString(16), 64, '0')
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}
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static cid_to_cosh ({ cid }) {
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if (/^[Q|1]/.test(cid)) {
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return this.b58_to_hex(cid).slice(4)
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} else if (/^b/.test(cid)) {
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return this.b32_to_hex(cid.substr(1)).slice(8)
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} else if (/^z/.test(cid)) {
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return this.b58_to_hex(cid.substr(1)).slice(8)
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}
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}
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static cosh_to_cid ({ cosh, cidBase = 'b32', cidVersion = 1, cidCodec = 'raw', cidAlgo = 'sha256' }) {
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const multibase = {
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identity: 0x00,
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b2: '0',
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b8: '7',
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b10: '9',
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b16: 'f',
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B16: 'F',
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b32: 'b',
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B32: 'B',
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b32h: 'v',
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B32h: 'V',
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b36: 'k',
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b64: 'm',
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b64p: 'M',
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b64u: 'u',
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b64up: 'U',
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b58: 'z',
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}
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const multicodec = {
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dagpb: '70',
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p2pkey: '72',
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raw: '55'
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}
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const multialgo = {
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identify: '00',
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sha256: '12'
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}
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if (cidVersion === 0) {
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return this.hex_to_b58(`${multialgo[cidAlgo]}${Number(cosh.length/2).toString(16)}${cosh}`)
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}
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if (cidVersion === 1) {
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let fullHex = `01${multicodec[cidCodec]}${multialgo[cidAlgo]}${Number(cosh.length/2).toString(16)}${cosh}`
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if (cidBase==='b32') {
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return multibase[cidBase] + this.hex_to_b32(fullHex).toLowerCase().replace(/=/g,'')
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}else if (cidBase==='b58') {
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return multibase[cidBase] + this.hex_to_b58(fullHex)
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}
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}
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}
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static string_to_raw_cid (str) {
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return this.cosh_to_cid({ cosh: this.hash(str), cidVersion:1, cidCodec:'raw' })
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}
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}
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// 必须单独写 module.exports，不要和类定义写在一起，否则会导致 jsdoc 解析不到类内文档。
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