mcuxClRsa_sign_pss_sha2_256_example.c File Reference

Example of using function mcuxClRsa_sign to perform the RSA signature generation with EMSA-PSS-SIGN padding scheme according to PKCS #1 v2.2. More...

#include <mcuxClToolchain.h>
#include <mcuxClSession.h>
#include <mcuxClExample_Session_Helper.h>
#include <mcuxCsslFlowProtection.h>
#include <mcuxClCore_FunctionIdentifiers.h>
#include <mcuxClRandom.h>
#include <mcuxClRandomModes.h>
#include <mcuxClBuffer.h>
#include <mcuxClRsa.h>
#include <mcuxClCore_Examples.h>
#include <mcuxClEls.h>
#include <mcuxClExample_ELS_Helper.h>

Macros
#define	RSA_KEY_BIT_LENGTH
	The example uses a 2048-bit key.
#define	RSA_KEY_BYTE_LENGTH
	Converting the key-bitlength to bytelength.
#define	RSA_MESSAGE_DIGEST_LENGTH
	The example uses a Sha2-256 digest, which is 32 bytes long.
#define	RSA_PSS_SALT_LENGTH
	The salt length is set to 0 in this example.

Functions
	MCUXCLEXAMPLE_FUNCTION (mcuxClRsa_sign_pss_sha2_256_example)
	Performs a session set-up; a call to function mcuxClRsa_sign using mode mcuxClRsa_Mode_Sign_Pss_Sha2_256; a session clean-up.

Variables
static const ALIGNED uint8_t	modulus [RSA_KEY_BYTE_LENGTH]
	Example value for public RSA modulus N.
static const ALIGNED uint8_t	exponent [RSA_KEY_BYTE_LENGTH]
	Example value for private RSA exponent d.
static const ALIGNED uint8_t	message [RSA_MESSAGE_DIGEST_LENGTH]
	Example value for Sha2-256 message digest.
static const ALIGNED uint8_t	referenceSignature [RSA_KEY_BYTE_LENGTH]
	Expected signature.

Detailed Description

Example of using function mcuxClRsa_sign to perform the RSA signature generation with EMSA-PSS-SIGN padding scheme according to PKCS #1 v2.2.

Macro Definition Documentation

RSA_KEY_BIT_LENGTH

#define RSA_KEY_BIT_LENGTH

The example uses a 2048-bit key.

RSA_KEY_BYTE_LENGTH

#define RSA_KEY_BYTE_LENGTH

Converting the key-bitlength to bytelength.

RSA_MESSAGE_DIGEST_LENGTH

#define RSA_MESSAGE_DIGEST_LENGTH

The example uses a Sha2-256 digest, which is 32 bytes long.

RSA_PSS_SALT_LENGTH

#define RSA_PSS_SALT_LENGTH

The salt length is set to 0 in this example.

Function Documentation

MCUXCLEXAMPLE_FUNCTION()

MCUXCLEXAMPLE_FUNCTION

(

mcuxClRsa_sign_pss_sha2_256_example

)

Performs a session set-up; a call to function mcuxClRsa_sign using mode mcuxClRsa_Mode_Sign_Pss_Sha2_256; a session clean-up.

Return values

MCUXCLEXAMPLE_STATUS_OK	The example code completed successfully
MCUXCLEXAMPLE_STATUS_ERROR	The example code failed

Initialize ELS, Enable the ELS

Destroy Session and cleanup Session

Disable the ELS

Variable Documentation

modulus

const ALIGNED uint8_t modulus[RSA_KEY_BYTE_LENGTH]

static

Example value for public RSA modulus N.

exponent

const ALIGNED uint8_t exponent[RSA_KEY_BYTE_LENGTH]

static

Example value for private RSA exponent d.

message

const ALIGNED uint8_t message[RSA_MESSAGE_DIGEST_LENGTH]

static

Example value for Sha2-256 message digest.

referenceSignature

const ALIGNED uint8_t referenceSignature[RSA_KEY_BYTE_LENGTH]

static

Expected signature.

Examples

mcuxClRsa_sign_NoEncode_example.c, and mcuxClRsa_sign_pss_sha2_256_example.c.