[wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x #77927

Closed
#78696
Closed
[wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x#77927
#78696
Assignees
pavelsavaramaraf
Labels
arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
Milestone
8.0.0

Description

@benjineering
benjineering
opened on Nov 4, 2022

Description

When creating a new GUID in a .NET 7 WASM console app, I'm getting a runtime error.

Reproduction Steps

  1. Run dotnet new wasmconsole
  2. Insert var guid = Guid.NewGuid(); before the console log statement
  3. Run dotnet build -c Debug
  4. Run node .\bin\Debug\net7.0\browser-wasm\AppBundle\main.mjs

Expected behavior

No error expected.

Actual behavior

 at Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length)
at System.Guid.NewGuid()
at Program.<Main>$(String[] args) in C:\Users\ben\OneDrive\Desktop\wasm-error\Program.cs:line 4
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Error: Error occurred during a cryptographic operation.

Regression?

No response

Known Workarounds

No response

Configuration

  • dotnet 7.0.100-rc.2.22477.23
  • node v17.3.0
  • Windows 10 x64

Other information

No response

Metadata

Metadata

Assignees

Labels

arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript

Type

No type

Projects

No projects

    Milestone

    Relationships

    None yet

    Development

    No branches or pull requests

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    , 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
     blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

    Skip to content
    [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x #77927
    Closed
    #78696
    Closed
    [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x#77927
    #78696
    Assignees
    pavelsavaramaraf
    Labels
    arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
    Milestone
    8.0.0
    Description
    @benjineering
    benjineering
    opened on Nov 4, 2022
    Description
    When creating a new GUID in a .NET 7 WASM console app, I'm getting a runtime error.
    Reproduction Steps
    1. Run dotnet new wasmconsole
    2. Insert var guid = Guid.NewGuid(); before the console log statement
    3. Run dotnet build -c Debug
    4. Run node .\bin\Debug\net7.0\browser-wasm\AppBundle\main.mjs
    Expected behavior
    No error expected.
    Actual behavior
     at Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length)
at System.Guid.NewGuid()
at Program.<Main>$(String[] args) in C:\Users\ben\OneDrive\Desktop\wasm-error\Program.cs:line 4
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Error: Error occurred during a cryptographic operation.

    Regression?
    No response
    Known Workarounds
    No response
    Configuration
    • dotnet 7.0.100-rc.2.22477.23
    • node v17.3.0
    • Windows 10 x64
    Other information
    No response
    Metadata
    Metadata
    Assignees
    Labels
    arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
    Type
    No type
    Projects
    No projects
      Milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions
      
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

      Skip to content
      [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x #77927
      Closed
      #78696
      Closed
      [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x#77927
      #78696
      Assignees
      pavelsavaramaraf
      Labels
      arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
      Milestone
      8.0.0
      Description
      @benjineering
      benjineering
      opened on Nov 4, 2022
      Description
      When creating a new GUID in a .NET 7 WASM console app, I'm getting a runtime error.
      Reproduction Steps
      1. Run dotnet new wasmconsole
      2. Insert var guid = Guid.NewGuid(); before the console log statement
      3. Run dotnet build -c Debug
      4. Run node .\bin\Debug\net7.0\browser-wasm\AppBundle\main.mjs
      Expected behavior
      No error expected.
      Actual behavior
       at Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length)
at System.Guid.NewGuid()
at Program.<Main>$(String[] args) in C:\Users\ben\OneDrive\Desktop\wasm-error\Program.cs:line 4
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Error: Error occurred during a cryptographic operation.

      Regression?
      No response
      Known Workarounds
      No response
      Configuration
      • dotnet 7.0.100-rc.2.22477.23
      • node v17.3.0
      • Windows 10 x64
      Other information
      No response
      Metadata
      Metadata
      Assignees
      Labels
      arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
      Type
      No type
      Projects
      No projects
        Milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

        Skip to content
        [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x #77927
        Closed
        #78696
        Closed
        [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x#77927
        #78696
        Assignees
        pavelsavaramaraf
        Labels
        arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
        Milestone
        8.0.0
        Description
        @benjineering
        benjineering
        opened on Nov 4, 2022
        Description
        When creating a new GUID in a .NET 7 WASM console app, I'm getting a runtime error.
        Reproduction Steps
        1. Run dotnet new wasmconsole
        2. Insert var guid = Guid.NewGuid(); before the console log statement
        3. Run dotnet build -c Debug
        4. Run node .\bin\Debug\net7.0\browser-wasm\AppBundle\main.mjs
        Expected behavior
        No error expected.
        Actual behavior
         at Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length)
at System.Guid.NewGuid()
at Program.<Main>$(String[] args) in C:\Users\ben\OneDrive\Desktop\wasm-error\Program.cs:line 4
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Error: Error occurred during a cryptographic operation.

        Regression?
        No response
        Known Workarounds
        No response
        Configuration
        • dotnet 7.0.100-rc.2.22477.23
        • node v17.3.0
        • Windows 10 x64
        Other information
        No response
        Metadata
        Metadata
        Assignees
        Labels
        arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
        Type
        No type
        Projects
        No projects
          Milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

          Skip to content
          [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x #77927
          Closed
          #78696
          Closed
          [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x#77927
          #78696
          Assignees
          pavelsavaramaraf
          Labels
          arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
          Milestone
          8.0.0
          Description
          @benjineering
          benjineering
          opened on Nov 4, 2022
          Description
          When creating a new GUID in a .NET 7 WASM console app, I'm getting a runtime error.
          Reproduction Steps
          1. Run dotnet new wasmconsole
          2. Insert var guid = Guid.NewGuid(); before the console log statement
          3. Run dotnet build -c Debug
          4. Run node .\bin\Debug\net7.0\browser-wasm\AppBundle\main.mjs
          Expected behavior
          No error expected.
          Actual behavior
           at Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length)
at System.Guid.NewGuid()
at Program.<Main>$(String[] args) in C:\Users\ben\OneDrive\Desktop\wasm-error\Program.cs:line 4
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Error: Error occurred during a cryptographic operation.

          Regression?
          No response
          Known Workarounds
          No response
          Configuration
          • dotnet 7.0.100-rc.2.22477.23
          • node v17.3.0
          • Windows 10 x64
          Other information
          No response
          Metadata
          Metadata
          Assignees
          Labels
          arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
          Type
          No type
          Projects
          No projects
            Milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

            Skip to content
            [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x #77927
            Closed
            #78696
            Closed
            [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x#77927
            #78696
            Assignees
            pavelsavaramaraf
            Labels
            arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
            Milestone
            8.0.0
            Description
            @benjineering
            benjineering
            opened on Nov 4, 2022
            Description
            When creating a new GUID in a .NET 7 WASM console app, I'm getting a runtime error.
            Reproduction Steps
            1. Run dotnet new wasmconsole
            2. Insert var guid = Guid.NewGuid(); before the console log statement
            3. Run dotnet build -c Debug
            4. Run node .\bin\Debug\net7.0\browser-wasm\AppBundle\main.mjs
            Expected behavior
            No error expected.
            Actual behavior
             at Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length)
at System.Guid.NewGuid()
at Program.<Main>$(String[] args) in C:\Users\ben\OneDrive\Desktop\wasm-error\Program.cs:line 4
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Error: Error occurred during a cryptographic operation.

            Regression?
            No response
            Known Workarounds
            No response
            Configuration
            • dotnet 7.0.100-rc.2.22477.23
            • node v17.3.0
            • Windows 10 x64
            Other information
            No response
            Metadata
            Metadata
            Assignees
            Labels
            arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
            Type
            No type
            Projects
            No projects
              Milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

              Skip to content
              [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x #77927
              Closed
              #78696
              Closed
              [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x#77927
              #78696
              Assignees
              pavelsavaramaraf
              Labels
              arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
              Milestone
              8.0.0
              Description
              @benjineering
              benjineering
              opened on Nov 4, 2022
              Description
              When creating a new GUID in a .NET 7 WASM console app, I'm getting a runtime error.
              Reproduction Steps
              1. Run dotnet new wasmconsole
              2. Insert var guid = Guid.NewGuid(); before the console log statement
              3. Run dotnet build -c Debug
              4. Run node .\bin\Debug\net7.0\browser-wasm\AppBundle\main.mjs
              Expected behavior
              No error expected.
              Actual behavior
               at Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length)
at System.Guid.NewGuid()
at Program.<Main>$(String[] args) in C:\Users\ben\OneDrive\Desktop\wasm-error\Program.cs:line 4
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Error: Error occurred during a cryptographic operation.

              Regression?
              No response
              Known Workarounds
              No response
              Configuration
              • dotnet 7.0.100-rc.2.22477.23
              • node v17.3.0
              • Windows 10 x64
              Other information
              No response
              Metadata
              Metadata
              Assignees
              Labels
              arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
              Type
              No type
              Projects
              No projects
                Milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions
                
, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

                Skip to content
                [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x #77927
                Closed
                #78696
                Closed
                [wasm] Guid.NewGuid() fails with Error occurred during a cryptographic operation. in Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length) with node < 19.x#77927
                #78696
                Assignees
                pavelsavaramaraf
                Labels
                arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
                Milestone
                8.0.0
                Description
                @benjineering
                benjineering
                opened on Nov 4, 2022
                Description
                When creating a new GUID in a .NET 7 WASM console app, I'm getting a runtime error.
                Reproduction Steps
                1. Run dotnet new wasmconsole
                2. Insert var guid = Guid.NewGuid(); before the console log statement
                3. Run dotnet build -c Debug
                4. Run node .\bin\Debug\net7.0\browser-wasm\AppBundle\main.mjs
                Expected behavior
                No error expected.
                Actual behavior
                 at Interop.GetCryptographicallySecureRandomBytes(Byte* buffer, Int32 length)
at System.Guid.NewGuid()
at Program.<Main>$(String[] args) in C:\Users\ben\OneDrive\Desktop\wasm-error\Program.cs:line 4
at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, Span`1 args, BindingFlags invokeAttr)
Error: Error occurred during a cryptographic operation.

                Regression?
                No response
                Known Workarounds
                No response
                Configuration
                • dotnet 7.0.100-rc.2.22477.23
                • node v17.3.0
                • Windows 10 x64
                Other information
                No response
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                arch-wasmWebAssembly architecturearea-System.Runtime.InteropServices.JavaScript
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