Implement RSACrypto

[StefanGreve]

TODO

• implement RSACryptoProvider
• add IRSACryptoService
• implement RSACryptoService
• add RSACryptoOptions
• implement AddRSACryptoService
• test RSACryptoProvider
• test RSACryptoService

Other Tasks

• Add doc string for ICryptoRandomService interface
• Add doc strings for IRSACryptoService
• Add doc strings for RSACryptoProvider
• Change the API for string message and string data to a (pinned) byte array

References

• https://csrc.nist.gov/projects/cryptographic-algorithm-validation-program/digital-signatures
• https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Algorithm-Validation-Program/documents/dss/186-3rsatestvectors.zip
• https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Algorithm-Validation-Program/documents/dss/186-2rsatestvectors.zip
• https://csrc.nist.gov/CSRC/media//Projects/Cryptographic-Algorithm-Validation-Program/documents/dss/RSAVS.pdf
• https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Algorithm-Validation-Program/documents/dss2/rsa2vs.pdf

StackOverflow

• Pinning Byte Arrays

[StefanGreve]

Notes: The RSACryptoService currently can throw an exception in the contructor:

 this._certificate = this._certificateService.GetConfiguredCertificate()
            ?? throw new ArgumentNullException(nameof(this._certificate));

Idea

Consider rewriting this code by moving the validation to a CertificateOptionsValidator (which implements IValidateOptions<CertificateOptions>). Add a certificate to the respective option and decorate this property with the IgnoreDataMember attribute to establish communication between the validator and the service.