rsa.h File Reference

RSA algorithm. More...

#include "rsakp.h"

Go to the source code of this file.

Functions

int rsapub (const rsapk *pk, const mpnumber *m, mpnumber *c)

This function performs a raw RSA public key operation.

int rsapri (const rsakp *kp, const mpnumber *c, mpnumber *m)

This function performs a raw RSA private key operation.

int rsapricrt (const rsakp *kp, const mpnumber *c, mpnumber *m)

This function performs a raw RSA private key operation, with application of the Chinese Remainder Theorem.

int rsavrfy (const rsapk *pk, const mpnumber *m, const mpnumber *c)

This function performs a raw RSA verification.

Detailed Description

RSA algorithm.

Author:: Bob Deblier <bob.deblier@pandora.be>

Definition in file rsa.h.

Function Documentation

int rsapri ( const rsakp * kp,

const mpnumber * c,

mpnumber * m

)

This function performs a raw RSA private key operation.
This function can be used for decryption and signing.
It performs the operation:

$m=c^{d}\ \textrm{mod}\ n$

Parameters:

kp The RSA keypair.

c The ciphertext.

m The message.

Return values:

0 on success.

-1 on failure.

int rsapricrt ( const rsakp * kp,

const mpnumber * c,

mpnumber * m

)

This function performs a raw RSA private key operation, with application of the Chinese Remainder Theorem.
It performs the operation:

$j_1=c^{d_1}\ \textrm{mod}\ p$

$j_2=c^{d_2}\ \textrm{mod}\ q$

$h=c \cdot (j_1-j_2)\ \textrm{mod}\ p$

$m=j_2+hq$

Parameters:

kp The RSA keypair.

c The ciphertext.

m The message.

Return values:

0 on success.

-1 on failure.

int rsapub ( const rsapk * pk,

const mpnumber * m,

mpnumber * c

)

This function performs a raw RSA public key operation.
This function can be used for encryption and verifying.
It performs the following operation:

$c=m^{e}\ \textrm{mod}\ n$

Parameters:

pk The RSA public key.

m The message.

c The ciphertext.

Return values:

0 on success.

-1 on failure.

int rsavrfy ( const rsapk * pk,

const mpnumber * m,

const mpnumber * c

)

This function performs a raw RSA verification.
It verifies if ciphertext c was encrypted from cleartext m with the private key matching the given public key pk.

Parameters:

pk The public key.

m The cleartext message.

c The ciphertext message.

Return values:

1 on success.

0 on failure.

Generated on Wed Mar 24 13:56:54 2004 for BeeCrypt by

1.3.6


Functions
int	rsapub (const rsapk pk, const mpnumber m, mpnumber *c)
	This function performs a raw RSA public key operation.
int	rsapri (const rsakp kp, const mpnumber c, mpnumber *m)
	This function performs a raw RSA private key operation.
int	rsapricrt (const rsakp kp, const mpnumber c, mpnumber *m)
	This function performs a raw RSA private key operation, with application of the Chinese Remainder Theorem.
int	rsavrfy (const rsapk pk, const mpnumber m, const mpnumber *c)
	This function performs a raw RSA verification.