smarthash/ts/nodehash.sha256.ts

52 lines
1.3 KiB
TypeScript
Raw Normal View History

2016-08-16 01:37:40 +00:00
import * as plugins from "./nodehash.plugins";
import * as helpers from "./nodehash.helpers";
/**
* creates sha256 Hash from Stream
*/
export let sha256FromStream = (input) => {
let done = plugins.q.defer();
let hash = plugins.crypto.createHash('sha256');
hash["setEncoding"]("hex");
input
.pipe(hash)
.pipe(helpers.hashStreamPipeStop(done.resolve));
return done.promise;
};
/**
* creates sha256 Hash from File;
*/
export let sha256FromFile = (filePath:string) => {
let done = plugins.q.defer();
let absolutePath = plugins.path.resolve(filePath);
let readableStream = plugins.fs.createReadStream(absolutePath);
sha256FromStream(readableStream)
.then((resultHashString) => {
done.resolve(resultHashString);
});
return done.promise;
}
/**
* Computes sha256 Hash from String synchronously
*/
export let sha256FromStringSync = (stringArg) => {
let hash = plugins.crypto.createHash('sha256');
hash.update(stringArg);
return hash.digest("hex");
};
/**
* Computes sha256 Hash from String
*/
export let sha256FromString = (stringArg) => {
let done = plugins.q.defer();
let hash = plugins.crypto.createHash('sha256');
hash.update(stringArg);
let hashResult = hash.digest("hex");
done.resolve(hashResult);
return done.promise;
};