add content_to_cid

README.md

@@ -24,7 +24,7 @@
 在前后端软件的 package.json 的依赖清单中引入本库：
 
 ```
-npm install git+https://git.tic.cc/npm/tic-crypto#RELEASE_OR_BRANCH --save
+npm install git+https://git.tic.cc/open/tic-crypto#RELEASE_OR_BRANCH --save
 ```
 
 ## 用法

package.json

@@ -12,6 +12,7 @@
     "eccrypto-js": "^5.4.0",
     "ethereum-rsa": "^1.0.5",
     "hdkey": "^2.0.1",
+    "ipfs-only-hash": "^4.0.0",
     "js-crypto-key-utils": "^1.0.4",
     "keccak": "^3.0.2",
     "secp256k1": "^4.0.3",

seafile-ignore.txt

@@ -22,6 +22,12 @@
 *.nosf/
 *.nosf.*/
 
+## everything 'git pull or fetch' will update `.git/FETCH_HEAD`, even if the content doesn't change. To avoid too many useless updates of this file in Seafile history:
+FETCH_HEAD
+*/FETCH_HEAD
+
+.Trash/
+
 .DS_Store
 */.DS_Store
 
@@ -48,12 +54,18 @@ _desktop.ini
 node_modules/
 */node_modules/
 package-lock.json
+*/package-lock.json
 
 pages4loader.json5
+*/pages4loader.json5
 
 .deploy_git/
 */.deploy_git/
 
+# next.js 项目
+.next/
+*/.next/
+
 # HBuilder 目录
 unpackage/
 */unpackage/

ticc.js

@@ -16,6 +16,7 @@ const hdkey = require('hdkey') // https://github.com/cryptocoinjs/hdkey // 或
 const secp256k1 = require('secp256k1')
 const base32encode = require('base32-encode')
 const base32decode = require('base32-decode')
+const ipfsOnlyHash = require('ipfs-only-hash')
 const { TronWeb } = require('tronweb')
 
 // 全部以hex为默认输入输出格式，方便人的阅读，以及方便函数之间统一接口
@@ -1527,6 +1528,12 @@ class TicCrypto {
     return '04' + this.padStart(x.toString(16), 64, '0') + this.padStart(y.toString(16), 64, '0')
   }
 
+  static async content_to_cid ({ content, ...option }) {
+    // {content: 'hello world', cidVersion: 0}
+    // content can be a string, a file, a stream
+    return await ipfsOnlyHash.of(content, option)
+  }
+
   // cahex: content address hex. 最核心的纯hex的内容地址，没有任何额外标记。同一个内容的 cahex 是唯一的，而 cid 是在 cahex 基础上有各种不同的编码，转成字符串形式。cid建议叫做 caid.
   static cid_to_cahex ({ cid }) {
     try {