pkwrite.c File Reference

#include "mbedtls/config.h"
#include "mbedtls/pk.h"
#include "mbedtls/asn1write.h"
#include "mbedtls/oid.h"
#include <string.h>
#include "mbedtls/rsa.h"
#include "mbedtls/ecp.h"
#include "mbedtls/ecdsa.h"
#include "mbedtls/pem.h"
#include "mbedtls/platform.h"

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Macros
#define	PEM_BEGIN_PUBLIC_KEY   "-----BEGIN PUBLIC KEY-----\n"
#define	PEM_END_PUBLIC_KEY   "-----END PUBLIC KEY-----\n"
#define	PEM_BEGIN_PRIVATE_KEY_RSA   "-----BEGIN RSA PRIVATE KEY-----\n"
#define	PEM_END_PRIVATE_KEY_RSA   "-----END RSA PRIVATE KEY-----\n"
#define	PEM_BEGIN_PRIVATE_KEY_EC   "-----BEGIN EC PRIVATE KEY-----\n"
#define	PEM_END_PRIVATE_KEY_EC   "-----END EC PRIVATE KEY-----\n"
#define	RSA_PUB_DER_MAX_BYTES   38 + 2 * MBEDTLS_MPI_MAX_SIZE
#define	MPI_MAX_SIZE_2
#define	RSA_PRV_DER_MAX_BYTES
#define	ECP_PUB_DER_MAX_BYTES   30 + 2 * MBEDTLS_ECP_MAX_BYTES
#define	ECP_PRV_DER_MAX_BYTES   29 + 3 * MBEDTLS_ECP_MAX_BYTES
#define	PUB_DER_MAX_BYTES
#define	PRV_DER_MAX_BYTES

Functions
static int	pk_write_rsa_pubkey (unsigned char **p, unsigned char *start, mbedtls_rsa_context *rsa)
static int	pk_write_ec_pubkey (unsigned char **p, unsigned char *start, mbedtls_ecp_keypair *ec)
static int	pk_write_ec_param (unsigned char **p, unsigned char *start, mbedtls_ecp_keypair *ec)
int	mbedtls_pk_write_pubkey (unsigned char **p, unsigned char *start, const mbedtls_pk_context *key)
	Write a subjectPublicKey to ASN.1 data Note: function works backwards in data buffer. More...
int	mbedtls_pk_write_pubkey_der (mbedtls_pk_context *key, unsigned char *buf, size_t size)
	Write a public key to a SubjectPublicKeyInfo DER structure Note: data is written at the end of the buffer! Use the return value to determine where you should start using the buffer. More...
int	mbedtls_pk_write_key_der (mbedtls_pk_context *key, unsigned char *buf, size_t size)
	Write a private key to a PKCS#1 or SEC1 DER structure Note: data is written at the end of the buffer! Use the return value to determine where you should start using the buffer. More...
int	mbedtls_pk_write_pubkey_pem (mbedtls_pk_context *key, unsigned char *buf, size_t size)
	Write a public key to a PEM string. More...
int	mbedtls_pk_write_key_pem (mbedtls_pk_context *key, unsigned char *buf, size_t size)
	Write a private key to a PKCS#1 or SEC1 PEM string. More...

Macro Definition Documentation

ECP_PRV_DER_MAX_BYTES

#define ECP_PRV_DER_MAX_BYTES   29 + 3 * MBEDTLS_ECP_MAX_BYTES

ECP_PUB_DER_MAX_BYTES

#define ECP_PUB_DER_MAX_BYTES   30 + 2 * MBEDTLS_ECP_MAX_BYTES

MPI_MAX_SIZE_2

#define MPI_MAX_SIZE_2

Value:

MBEDTLS_MPI_MAX_SIZE / 2 + \
                                MBEDTLS_MPI_MAX_SIZE % 2

PEM_BEGIN_PRIVATE_KEY_EC

#define PEM_BEGIN_PRIVATE_KEY_EC   "-----BEGIN EC PRIVATE KEY-----\n"

PEM_BEGIN_PRIVATE_KEY_RSA

#define PEM_BEGIN_PRIVATE_KEY_RSA   "-----BEGIN RSA PRIVATE KEY-----\n"

PEM_BEGIN_PUBLIC_KEY

#define PEM_BEGIN_PUBLIC_KEY   "-----BEGIN PUBLIC KEY-----\n"

PEM_END_PRIVATE_KEY_EC

#define PEM_END_PRIVATE_KEY_EC   "-----END EC PRIVATE KEY-----\n"

PEM_END_PRIVATE_KEY_RSA

#define PEM_END_PRIVATE_KEY_RSA   "-----END RSA PRIVATE KEY-----\n"

PEM_END_PUBLIC_KEY

#define PEM_END_PUBLIC_KEY   "-----END PUBLIC KEY-----\n"

PRV_DER_MAX_BYTES

#define PRV_DER_MAX_BYTES

Value:

RSA_PRV_DER_MAX_BYTES > ECP_PRV_DER_MAX_BYTES ? \
                            RSA_PRV_DER_MAX_BYTES : ECP_PRV_DER_MAX_BYTES

PUB_DER_MAX_BYTES

#define PUB_DER_MAX_BYTES

Value:

RSA_PUB_DER_MAX_BYTES > ECP_PUB_DER_MAX_BYTES ? \
                            RSA_PUB_DER_MAX_BYTES : ECP_PUB_DER_MAX_BYTES

RSA_PRV_DER_MAX_BYTES

#define RSA_PRV_DER_MAX_BYTES

Value:

47 + 3 * MBEDTLS_MPI_MAX_SIZE \
                                   + 5 * MPI_MAX_SIZE_2

RSA_PUB_DER_MAX_BYTES

#define RSA_PUB_DER_MAX_BYTES   38 + 2 * MBEDTLS_MPI_MAX_SIZE

Function Documentation

mbedtls_pk_write_key_der()

int mbedtls_pk_write_key_der	(	mbedtls_pk_context *	ctx,
		unsigned char *	buf,
		size_t	size
	)

Write a private key to a PKCS#1 or SEC1 DER structure Note: data is written at the end of the buffer! Use the return value to determine where you should start using the buffer.

Parameters

ctx	private to write away
buf	buffer to write to
size	size of the buffer

Returns

length of data written if successful, or a specific error code

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mbedtls_pk_write_key_pem()

int mbedtls_pk_write_key_pem	(	mbedtls_pk_context *	ctx,
		unsigned char *	buf,
		size_t	size
	)

Write a private key to a PKCS#1 or SEC1 PEM string.

Parameters

ctx	private to write away
buf	buffer to write to
size	size of the buffer

Returns

0 if successful, or a specific error code

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mbedtls_pk_write_pubkey()

int mbedtls_pk_write_pubkey	(	unsigned char **	p,
		unsigned char *	start,
		const mbedtls_pk_context *	key
	)

Write a subjectPublicKey to ASN.1 data Note: function works backwards in data buffer.

Parameters

p	reference to current position pointer
start	start of the buffer (for bounds-checking)
key	public key to write away

Returns

the length written or a negative error code

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mbedtls_pk_write_pubkey_der()

int mbedtls_pk_write_pubkey_der	(	mbedtls_pk_context *	ctx,
		unsigned char *	buf,
		size_t	size
	)

Write a public key to a SubjectPublicKeyInfo DER structure Note: data is written at the end of the buffer! Use the return value to determine where you should start using the buffer.

Parameters

ctx	public key to write away
buf	buffer to write to
size	size of the buffer

Returns

length of data written if successful, or a specific error code

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mbedtls_pk_write_pubkey_pem()

int mbedtls_pk_write_pubkey_pem	(	mbedtls_pk_context *	ctx,
		unsigned char *	buf,
		size_t	size
	)

Write a public key to a PEM string.

Parameters

ctx	public key to write away
buf	buffer to write to
size	size of the buffer

Returns

0 if successful, or a specific error code

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pk_write_ec_param()

static int pk_write_ec_param ( unsigned char **  p, unsigned char *  start, mbedtls_ecp_keypair *  ec  )

static

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pk_write_ec_pubkey()

static int pk_write_ec_pubkey ( unsigned char **  p, unsigned char *  start, mbedtls_ecp_keypair *  ec  )

static

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pk_write_rsa_pubkey()

static int pk_write_rsa_pubkey ( unsigned char **  p, unsigned char *  start, mbedtls_rsa_context *  rsa  )

static

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