Windows 10: SHA256 ComputeHash started throwing System.Security.Cryptography.CryptographicException:...

Discus and support SHA256 ComputeHash started throwing System.Security.Cryptography.CryptographicException:... in Windows 10 Gaming to solve the problem; Exception = {"ClassName":"System.Security.Cryptography.CryptographicException","Message":"Unknown error... Discussion in 'Windows 10 Gaming' started by BryanEM, Jul 22, 2024.

  1. BRYANEM
    BryanEM Win User

    SHA256 ComputeHash started throwing System.Security.Cryptography.CryptographicException:...


    Exception = {"ClassName":"System.Security.Cryptography.CryptographicException","Message":"Unknown error \"-1073741816\".","Data":null,"InnerException":null,"HelpURL":null,"StackTraceString":" at System.Security.Cryptography.BCryptHashAlgorithm.HashCoreByte[] array, Int32 ibStart, Int32 cbSize\r\n at System.Security.Cryptography.HashAlgorithm.TransformBlockByte[] inputBuffer, Int32 inputOffset, Int32 inputCount, Byte[] outputBuffer, Int32 outputOffset\r\n at System.Security.Cryptography.SHA256Managed.HashCoreByte[] rgb, Int32 ibStart, Int32 cbSize\r\n at System.Security.Cryptograp

    :)
     
    BryanEM, Jul 22, 2024
    #1
  2. JEREMY BARTON (.NET)
    Jeremy Barton (.NET) Win User

    SHA256 ComputeHash started throwing System.Security.Cryptography.CryptographicException: Unknown error -1073741816 after recent windows update

    `-1073741816` is `STATUS_INVALID_HANDLE`, I'm not sure why the message isn't formatting properly.

    The most likely situation for this error is that there are multiple parallel calls to `ComputeHash`. The `ComputeHash` function is not thread-safe (and never has been); but previously the most probable outcome from a parallel call was data corruption (a hash value that is incorrect for one or more callers).

    If you are using a shared/static field to hold the hash algorithm instance then you will need to change your code to interact with the object within a `lock` scope (or other synchronization mechanism), or change from using a shared/static version to a local version or `[ThreadStatic]` version.

    The next most likely situation would be that there is a parallel call to Dispose().

    If you are encountering this error and there has never been concurrent access on the HashAlgorithm instance, we would love to see a repro.

    -Jeremy Barton

    .NET Libraries, Cryptography
     
    Jeremy Barton (.NET), Jul 22, 2024
    #2
  3. JMELGAARD
    Jmelgaard Win User
    SHA256 ComputeHash started throwing System.Security.Cryptography.CryptographicException: Unknown error -1073741816 after recent windows update

    I can confirm that adding a lock around the use of the SHA256 instance makes the exception go away.

    It would be REALLY NICE if the error would actually be more clear in that case then, but you touch on that your self so perhaps that is something to fix?
     
    Jmelgaard, Jul 22, 2024
    #3
  4. BRINK
    Brink Win User

    SHA256 ComputeHash started throwing System.Security.Cryptography.CryptographicException:...

    MSR JavaScript Cryptography Library Security Vulnerability

    Source: https://portal.msrc.microsoft.com/en.../CVE-2018-8319
     
    Brink, Jul 22, 2024
    #4
Thema:

SHA256 ComputeHash started throwing System.Security.Cryptography.CryptographicException:...

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