1 files changed, 5 insertions, 6 deletions
diff --git a/deps/npm/node_modules/ssri/index.js b/deps/npm/node_modules/ssri/index.js
index f01986fa51..6ec0d73df6 100644
--- a/deps/npm/node_modules/ssri/index.js
+++ b/deps/npm/node_modules/ssri/index.js
@@ -1,5 +1,7 @@
 'use strict'
 
+const Buffer = require('safe-buffer').Buffer
+
 const crypto = require('crypto')
 const Transform = require('stream').Transform
 
@@ -31,7 +33,7 @@ class Hash {
     this.options = rawOpts ? rawOpts.slice(1).split('?') : []
   }
   hexDigest () {
-    return this.digest && bufFrom(this.digest, 'base64').toString('hex')
+    return this.digest && Buffer.from(this.digest, 'base64').toString('hex')
   }
   toJSON () {
     return this.toString()
@@ -154,7 +156,7 @@ function fromHex (hexDigest, algorithm, opts) {
   : ''
   return parse(
     `${algorithm}-${
-      bufFrom(hexDigest, 'hex').toString('base64')
+      Buffer.from(hexDigest, 'hex').toString('base64')
     }${optString}`, opts
   )
 }
@@ -257,6 +259,7 @@ function integrityStream (opts) {
     const match = (
       // Integrity verification mode
       opts.integrity &&
+      newSri[algorithm] &&
       digests &&
       digests.find(hash => {
         return newSri[algorithm].find(newhash => {
@@ -332,7 +335,3 @@ function getPrioritizedHash (algo1, algo2) {
   ? algo1
   : algo2
 }
-
-function bufFrom (data, enc) {
-  return Buffer.from ? Buffer.from(data, enc) : new Buffer(data, enc)
-}