/home/dko/projects/mobilec/trunk/src/security/xyssl-0.9/include/xyssl/rsa.h

Go to the documentation of this file.

#ifndef XYSSL_RSA_H
#define XYSSL_RSA_H

#include "bignum.h"

#define XYSSL_ERR_RSA_BAD_INPUT_DATA                    -0x0400
#define XYSSL_ERR_RSA_INVALID_PADDING                   -0x0410
#define XYSSL_ERR_RSA_KEY_GEN_FAILED                    -0x0420
#define XYSSL_ERR_RSA_KEY_CHECK_FAILED                  -0x0430
#define XYSSL_ERR_RSA_PUBLIC_FAILED                     -0x0440
#define XYSSL_ERR_RSA_PRIVATE_FAILED                    -0x0450
#define XYSSL_ERR_RSA_VERIFY_FAILED                     -0x0460

/*
 * PKCS#1 constants
 */
#define RSA_RAW         0
#define RSA_MD2         2
#define RSA_MD4         3
#define RSA_MD5         4
#define RSA_SHA1        5
#define RSA_SHA256      6

#define RSA_PUBLIC      0
#define RSA_PRIVATE     1

#define RSA_PKCS_V15    0
#define RSA_PKCS_V21    1

#define RSA_SIGN        1
#define RSA_CRYPT       2

/*
 * DigestInfo ::= SEQUENCE {
 *   digestAlgorithm DigestAlgorithmIdentifier,
 *   digest Digest }
 *
 * DigestAlgorithmIdentifier ::= AlgorithmIdentifier
 *
 * Digest ::= OCTET STRING
 */
#define ASN1_HASH_MDX                       \
    "\x30\x20\x30\x0C\x06\x08\x2A\x86\x48"  \
    "\x86\xF7\x0D\x02\x00\x05\x00\x04\x10"

#define ASN1_HASH_SHA1                      \
    "\x30\x21\x30\x09\x06\x05\x2B\x0E\x03"  \
    "\x02\x1A\x05\x00\x04\x14"

typedef struct
{
    int ver;                    
    int len;                    
    mpi N;                      
    mpi E;                      
    mpi D;                      
    mpi P;                      
    mpi Q;                      
    mpi DP;                     
    mpi DQ;                     
    mpi QP;                     
    mpi RN;                     
    mpi RP;                     
    mpi RQ;                     
    int padding;                
    int hash_id;                
    int (*f_rng)(void *);       
    void *p_rng;                
}
rsa_context;

#ifdef __cplusplus
extern "C" {
#endif

void rsa_init( rsa_context *ctx,
               int padding,
               int hash_id,
               int (*f_rng)(void *),
               void *p_rng );

int rsa_gen_key( rsa_context *ctx, int nbits, int exponent );

int rsa_check_pubkey( rsa_context *ctx );

int rsa_check_privkey( rsa_context *ctx );

int rsa_public( rsa_context *ctx,
                unsigned char *input,
                unsigned char *output );

int rsa_private( rsa_context *ctx,
                 unsigned char *input,
                 unsigned char *output );

int rsa_pkcs1_encrypt( rsa_context *ctx,
                       int mode, int  ilen,
                       unsigned char *input,
                       unsigned char *output );

int rsa_pkcs1_decrypt( rsa_context *ctx,
                       int mode, int *olen,
                       unsigned char *input,
                       unsigned char *output );

int rsa_pkcs1_sign( rsa_context *ctx,
                    int mode,
                    int hash_id,
                    int hashlen,
                    unsigned char *hash,
                    unsigned char *sig );

int rsa_pkcs1_verify( rsa_context *ctx,
                      int mode,
                      int hash_id,
                      int hashlen,
                      unsigned char *hash,
                      unsigned char *sig );

void rsa_free( rsa_context *ctx );

int rsa_self_test( int verbose );

#ifdef __cplusplus
}
#endif

#endif /* rsa.h */

---