C # Security API

Bouncycastle

The official website address is: http://www.bouncycastle.org/csharp/.

http://blog.csdn.net/popozhu/article/details/5812662

Http://www.xuebuyuan.com/301023.html

Read key from Pem file

New Pemreader (new StreamReader ("files/pubkey.pem"= ( Asymmetrickeyparameter) R.readobject ();
New Pemreader (new StreamReader ("files/prvkey.pem"= ( Asymmetrickeyparameter) R.readobject ();

Load the PFX certificate library, read the certificate, get the secret key

FileStream ms =NewFileStream ("STORE.P12", Openmode.open); Pkcs12store Store=NewPkcs12storebuilder (). Build (); store. Load (MS,"123456". ToCharArray ());//get first aliasIEnumerator Itor =store. Aliases.getenumerator (); Itor. MoveNext ();stringAlins =Itor. Current.tostring (); Asymmetrickeyparameter Prvkey=NULL; Asymmetrickeyparameter PubKey=NULL;if(Sotre. Iskeyentry (alins)) Prvkey=store. GetKey (Alins). Key;cert=store. GetCertificate (Alins). Certificate;pubkey=cert. Getpublickey ();

Encrypt, decrypt

Asymmetrickeyparameter prvkey=...; Asymmetrickeyparameter PubKey=...;//Public Key Cryptographystringorigin="abcd1234";byte[] originbytes=Encoding.Default.getBytes (origin); Ibufferedcipher c= Cipherutilities.getcipher ("rsa/ecb/pkcs1padding"); C.init (true, PubKey);byte[] Encrybytes =C.dofinal (origin);stringEncrystr=Encoding.Default.GetString (encrybytes);//private Key DecryptionIbufferedcipher C = Cipherutilities.getcipher ("rsa/ecb/pkcs1padding"); C.init (false, Prvkey);byte[] recoverbytes=c.dofinal (encrybytes);stringRecover=encoding.default.getstring (recoverbytes);

Signing, verifying

Generate and export keys, certificates, libraries

C # Security API