RSA/ECB/PKCS1Padding

[tifa-show]

Hi

I am new to forge and I am coming from JAVA. Can you please show me how to encrypt using RSA with ECB mode and PKCS1 Padding.

please help am stuck now

thanks

[dlongley]

You can find examples on how to do RSA-based encryption here:

https://github.com/digitalbazaar/forge#rsa

Specifically, you can do RSA public key encryption with PKCS1 padding like this:

// load public key from PEM-formatted string
var pem = '-----BEGIN PUBLIC KEY...';
var publicKey = forge.pki.publicKeyFromPem(pem);

// convert string to UTF-8 encoded bytes
var buffer = forge.util.createBuffer('Something to encrypt', 'utf8');
var bytes = buffer.getBytes();

// encrypt data with a public key using RSAES PKCS#1 v1.5
var encrypted = publicKey.encrypt(bytes, 'RSAES-PKCS1-V1_5');

// base64-encode encrypted data to send to server
var b64Encoded = forge.util.encode64(encrypted);

[Bibo1978]

you encrypt data with random key in ECB then you encrypt the key with rsa using pkcs1.5 .. RSA doesn't encrypt ECB symmetric keys do that

Kind Regards,
Ibrahim Magdy

On Jun 20, 2016, at 4:57 PM, Mustafa notifications@github.com wrote:

Hi

I am new to forge and I am coming from JAVA. Can you please show me how to encrypt using RSA with ECB mode and PKCS1 Padding.

please help am stuck now

thanks

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[dlongley]

Closing out as resolved, feel free to reopen if necessary.

[JianhuisHuang]

You can find examples on how to do RSA-based encryption here:

https://github.com/digitalbazaar/forge#rsa

Specifically, you can do RSA public key encryption with PKCS1 padding like this:

// load public key from PEM-formatted string
var pem = '-----BEGIN PUBLIC KEY...';
var publicKey = forge.pki.publicKeyFromPem(pem);

// convert string to UTF-8 encoded bytes
var buffer = forge.util.createBuffer('Something to encrypt', 'utf8');
var bytes = buffer.getBytes();

// encrypt data with a public key using RSAES PKCS#1 v1.5
var encrypted = publicKey.encrypt(bytes, 'RSAES-PKCS1-V1_5');

// base64-encode encrypted data to send to server
var b64Encoded = forge.util.encode64(encrypted);

it's work for me, thanks.