Type 'DssKey' owns disposable field(s) '_algorithm' but is not disposable (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1001)

GetFingerprint uses a broken cryptographic algorithm MD5 (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca5351)

Type 'RsaKey' owns disposable field(s) '_algorithm' but is not disposable (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1001)

GetFingerprint uses a broken cryptographic algorithm MD5 (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca5351)

Do not declare visible instance fields (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1051)

Asymmetric encryption algorithm DSACryptoServiceProvider is weak. Switch to an RSA with at least 2048 key size, ECDH or ECDSA algorithm instead. (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca5384)

Do not declare visible instance fields (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1051)

Do not declare visible instance fields (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1051)

Do not declare visible instance fields (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1051)

Either replace the suffix 'Ex' in type name CipherModeEx with the suggested numeric alternate '2' or provide a more meaningful suffix that distinguishes it from the type it replaces (https://learn.microsoft.com/dotnet/fundamentals/code-analysis/quality-rules/ca1711)

Node.js 20 actions are deprecated. The following actions are running on Node.js 20 and may not work as expected: actions/checkout@v4, actions/setup-dotnet@v4. Actions will be forced to run with Node.js 24 by default starting June 2nd, 2026. Node.js 20 will be removed from the runner on September 16th, 2026. Please check if updated versions of these actions are available that support Node.js 24. To opt into Node.js 24 now, set the FORCE_JAVASCRIPT_ACTIONS_TO_NODE24=true environment variable on the runner or in your workflow file. Once Node.js 24 becomes the default, you can temporarily opt out by setting ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Dereference of a possibly null reference.

Possible null reference argument for parameter 'algorithm' in 'HmacAlgorithm.HmacAlgorithm(KeyedHashAlgorithm algorithm, int keySize, byte[] key)'.

Non-nullable field '_hashAlgorithm' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable.

Possible null reference argument for parameter 'buffer' in 'byte[] HashAlgorithm.ComputeHash(byte[] buffer)'.

Possible null reference argument for parameter 'data' in 'byte[] PublicKeyAlgorithm.SignData(byte[] data)'.

Possible null reference argument for parameter 'buffer' in 'SshDataWorker.SshDataWorker(byte[] buffer)'.

Possible null reference argument for parameter 'data' in 'void SshDataWorker.WriteMpint(byte[] data)'.

Possible null reference argument for parameter 'data' in 'void SshDataWorker.WriteMpint(byte[] data)'.

Possible null reference argument for parameter 'type' in 'PublicKeyAlgorithm KeyUtils.GetKeyAlgorithm(string type)'.