![benchmark of symmetric and asymmetric encryption, using the openssl tool on windows benchmark of symmetric and asymmetric encryption, using the openssl tool on windows](https://www.oracle.com/ocom/groups/public/@otn/documents/digitalasset/4312834.png)
![benchmark of symmetric and asymmetric encryption, using the openssl tool on windows benchmark of symmetric and asymmetric encryption, using the openssl tool on windows](https://www.garykessler.net/library/images/crypto_S-MIME_certificate.png)
![benchmark of symmetric and asymmetric encryption, using the openssl tool on windows benchmark of symmetric and asymmetric encryption, using the openssl tool on windows](https://www.encryptionconsulting.com/wp-content/uploads/2020/09/Asymmetric-Encryption-Diagram-2-1024x909.jpg)
Zctkkvf元iKaFGG6pUdwyz5wFSUs3foQ86mN1CqQa3xo1SJmaep6WoOE2Hl3HptiY85NM2wKxPKtp0mkeQVsaQ= MNn/rFCaSoWN1QwgFhTJH8/ZESQWg1Od+5orjHF5umzy6iherkA6xaS66KecFeWGl/raeCKVxDGx25PtLWNI+oJLQ2GOlwM0I4mROqItS9kMhTH2M8uO8qtPKGHgGCU6F9x+ECa/0Gz6pmCVQwi+YVBO3evbsOkDIWz6VXVyzMM= In this example, the private RSA key is stored as an XML file: Decrypt the AES random key using your private RSA key. and iii.: the AES-encrypted data and the RSA-encrypted random key. Publish (eg write to a file) the outputs from parts ii. Use RSA encryption to asymmetrically encrypt the random key generated in part i. Encrypt your data using AES/Rijndael using that random key generated in part i. Generate a random key of the length required for symmetrical encryption technique such as AES/Rijndael or similar. In other words, in order to successfully maintain asymmetry in encrypting arbitrarily large data, we combine both approaches: In practice RSA is used to exchange a private secret key between communicating end users that is then used to symmetrically encrypt/decrypt the large data. This is because asymmetric encryption is designed only for encrypting data smaller than it’s key size. As I soon found out when playing around with this technique, RSA as a means of assymetric encryption has a drawback, and that is in the size of the text you are encrypting – anything other than a piddling amount of text resulting in a ‘Bad length’ type of Exception. A utility in C# to use public/private key encryption of data inside large text files, before sending them over a secure connection such as SSL.