How to use CryptoAPI RSA_Decrypt()?

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Pratap Singh Naruka

Solved

Question

Reactive

Component

Security

Application Type

Reactive

Service Studio Version

11.53.20 (Build 61431)

Platform Version

11.16.0 (Build 35554)

I am want to encrypt URL parameters and want to send those in other screen.
I am using RSA encryption.

And when i call decrypt function it returns error Please refere given screenshot for server action.Also using the same key to decrypt

13 Oct 2022

Fábio Miguel Ferreira Coelho

Solution

Hello Pratap,

I hope you're doing well.

I did the same logic flow as you but I added the action "RSA_GetPublicKey" because this action returns the Public Key that you need to use as input parameter on the action "RSA_Encrypt".

You have that error on your logic because you don't have the Public Key to use on the "RSA_Encrypt" action.

This worked for me.

Let me know if this solved your situation.

Kind regards,

See solution in context

13 Oct 2022

3 replies

Last reply 15 Oct 2022

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Pratap Singh Naruka

@Fábio Miguel Ferreira Coelho

I tried your solution as well
I tried to save private key in DB and while decryption perform like this
Still this error

14 Oct 2022

Fábio Miguel Ferreira Coelho

Solution

Replying to Pratap Singh Naruka's comment on 14 Oct 2022 13:01:32

Hello Pratap,

Regarding your issue see the explanation below:

I created an action to save in the DB the Private Key, Public Key, Ciphertext, Plaintext and URL and I store all the values on the DB (CryptoKey Entity). So you have all the values that you might need stored in the DB;
I created another action to retrieve the CryptoKey by Id that you have stored in the DB and I used as you asked the "RSA_Decrypt" action;

This is working for me!

Please find the OML file attached.

Let me know if you have any questions or troubles.

Kind regards,

Personal_TestOS_FC.oml

14 Oct 2022

Pratap Singh Naruka

Replying to Fábio Miguel Ferreira Coelho's comment on 14 Oct 2022 15:01:01

Thank you

Fábio Miguel Ferreira Coelho for your time.

15 Oct 2022

Fábio Miguel Ferreira Coelho

Solution

Replying to Pratap Singh Naruka's comment on 14 Oct 2022 13:01:32

Hello Pratap,

Regarding your issue see the explanation below:

I created an action to save in the DB the Private Key, Public Key, Ciphertext, Plaintext and URL and I store all the values on the DB (CryptoKey Entity). So you have all the values that you might need stored in the DB;
I created another action to retrieve the CryptoKey by Id that you have stored in the DB and I used as you asked the "RSA_Decrypt" action;

This is working for me!

Please find the OML file attached.

Let me know if you have any questions or troubles.

Kind regards,

See solution in context

Personal_TestOS_FC.oml

14 Oct 2022

Fábio Miguel Ferreira Coelho

Solution

Hello Pratap,

I hope you're doing well.

I did the same logic flow as you but I added the action "RSA_GetPublicKey" because this action returns the Public Key that you need to use as input parameter on the action "RSA_Encrypt".

You have that error on your logic because you don't have the Public Key to use on the "RSA_Encrypt" action.

This worked for me.

Let me know if this solved your situation.

Kind regards,

13 Oct 2022

3 replies

Last reply 15 Oct 2022

Show thread

Hide thread

Pratap Singh Naruka

@Fábio Miguel Ferreira Coelho

I tried your solution as well
I tried to save private key in DB and while decryption perform like this
Still this error

14 Oct 2022

Fábio Miguel Ferreira Coelho

Solution

Replying to Pratap Singh Naruka's comment on 14 Oct 2022 13:01:32

Hello Pratap,

Regarding your issue see the explanation below:

I created an action to save in the DB the Private Key, Public Key, Ciphertext, Plaintext and URL and I store all the values on the DB (CryptoKey Entity). So you have all the values that you might need stored in the DB;
I created another action to retrieve the CryptoKey by Id that you have stored in the DB and I used as you asked the "RSA_Decrypt" action;

This is working for me!

Please find the OML file attached.

Let me know if you have any questions or troubles.

Kind regards,

Personal_TestOS_FC.oml

14 Oct 2022

Pratap Singh Naruka

Replying to Fábio Miguel Ferreira Coelho's comment on 14 Oct 2022 15:01:01

Thank you

Fábio Miguel Ferreira Coelho for your time.

15 Oct 2022

Bruno Rendeiro

@Pratap Singh Naruka

https://www.outsystems.com/forums/discussion/66604/how-to-use-cryptoapi/

14 Oct 2022

Pratap Singh Naruka

Hi Fábio Miguel Ferreira Coelho

I have used AES Encryption-decryption method and it worked for me.
Anyway thanks for your help

14 Oct 2022

1 reply

14 Oct 2022

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Fábio Miguel Ferreira Coelho

I'm glad I could help you.

Let me know if you have more questions or doubts regarding OS.

Have fun with OS!

14 Oct 2022

Márcio Carvalho

Why was @Fábio Miguel Ferreira Coelho answer unmarked as the solution?

An RSA is an Asymmetric algorithm that needs a public key to encrypt and a private key to decrypt.

An AES encryption is a Symmetric Key algorithm that needs just a key (shared key) to encrypt and decrypt.

The origin of the question is about RSA and not AES.

Kind Regards,

Márcio

14 Oct 2022

1 reply

15 Oct 2022

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Pratap Singh Naruka

Because I wanted some more queries to get resolved before question thread to be completed as I am newbie to CryptoAPI compenent
moreover i am aware of RSA and AES definations just needed help in hands on implementations.

Thanks for your Words.

15 Oct 2022

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