Merge remote-tracking branch 'restricted/pr/551' into development

* restricted/pr/551:
  ECP: Clarify test descriptions
  ECP: remove extra whitespaces
  Fix ECDH secret export for Mongomery curves
  Improve ECP test names
  Make ecp_get_type public
  Add more tests for ecp_read_key
  ECP: Catch unsupported import/export
  Improve documentation of mbedtls_ecp_read_key
  Fix typo in ECP module
  Remove unnecessary cast from ECP test
  Improve mbedtls_ecp_point_read_binary tests
  Add Montgomery points to ecp_point_write_binary
  ECDH: Add test vectors for Curve25519
  Add little endian export to Bignum
  Add mbedtls_ecp_read_key
  Add Montgomery points to ecp_point_read_binary
  Add little endian import to Bignum
This commit is contained in:
Jaeden Amero 2019-03-27 14:54:25 +00:00
commit 57773d4ede
11 changed files with 534 additions and 83 deletions

View file

@ -490,8 +490,24 @@ int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf,
size_t buflen );
/**
* \brief Export an MPI into unsigned big endian binary data
* of fixed size.
* \brief Import X from unsigned binary data, little endian
*
* \param X The destination MPI. This must point to an initialized MPI.
* \param buf The input buffer. This must be a readable buffer of length
* \p buflen Bytes.
* \param buflen The length of the input buffer \p p in Bytes.
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_read_binary_le( mbedtls_mpi *X,
const unsigned char *buf, size_t buflen );
/**
* \brief Export X into unsigned binary data, big endian.
* Always fills the whole buffer, which will start with zeros
* if the number is smaller.
*
* \param X The source MPI. This must point to an initialized MPI.
* \param buf The output buffer. This must be a writable buffer of length
@ -506,6 +522,24 @@ int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf,
int mbedtls_mpi_write_binary( const mbedtls_mpi *X, unsigned char *buf,
size_t buflen );
/**
* \brief Export X into unsigned binary data, little endian.
* Always fills the whole buffer, which will end with zeros
* if the number is smaller.
*
* \param X The source MPI. This must point to an initialized MPI.
* \param buf The output buffer. This must be a writable buffer of length
* \p buflen Bytes.
* \param buflen The size of the output buffer \p buf in Bytes.
*
* \return \c 0 if successful.
* \return #MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL if \p buf isn't
* large enough to hold the value of \p X.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_mpi_write_binary_le( const mbedtls_mpi *X,
unsigned char *buf, size_t buflen );
/**
* \brief Perform a left-shift on an MPI: X <<= count
*

View file

@ -99,6 +99,16 @@ typedef enum
*/
#define MBEDTLS_ECP_DP_MAX 12
/*
* Curve types
*/
typedef enum
{
MBEDTLS_ECP_TYPE_NONE = 0,
MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS, /* y^2 = x^3 + a x + b */
MBEDTLS_ECP_TYPE_MONTGOMERY, /* y^2 = x^3 + a x^2 + x */
} mbedtls_ecp_curve_type;
/**
* Curve information, for use by other modules.
*/
@ -417,6 +427,11 @@ void mbedtls_ecp_set_max_ops( unsigned max_ops );
int mbedtls_ecp_restart_is_enabled( void );
#endif /* MBEDTLS_ECP_RESTARTABLE */
/*
* Get the type of a curve
*/
mbedtls_ecp_curve_type mbedtls_ecp_get_type( const mbedtls_ecp_group *grp );
/**
* \brief This function retrieves the information defined in
* mbedtls_ecp_curve_info() for all supported curves in order
@ -626,6 +641,9 @@ int mbedtls_ecp_point_read_string( mbedtls_ecp_point *P, int radix,
* \param P The point to export. This must be initialized.
* \param format The point format. This must be either
* #MBEDTLS_ECP_PF_COMPRESSED or #MBEDTLS_ECP_PF_UNCOMPRESSED.
* (For groups without these formats, this parameter is
* ignored. But it still has to be either of the above
* values.)
* \param olen The address at which to store the length of
* the output in Bytes. This must not be \c NULL.
* \param buf The output buffer. This must be a writable buffer
@ -635,11 +653,14 @@ int mbedtls_ecp_point_read_string( mbedtls_ecp_point *P, int radix,
* \return \c 0 on success.
* \return #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL if the output buffer
* is too small to hold the point.
* \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the point format
* or the export for the given group is not implemented.
* \return Another negative error code on other kinds of failure.
*/
int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp, const mbedtls_ecp_point *P,
int format, size_t *olen,
unsigned char *buf, size_t buflen );
int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp,
const mbedtls_ecp_point *P,
int format, size_t *olen,
unsigned char *buf, size_t buflen );
/**
* \brief This function imports a point from unsigned binary data.
@ -660,8 +681,8 @@ int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp, const mbedtls_
* \return \c 0 on success.
* \return #MBEDTLS_ERR_ECP_BAD_INPUT_DATA if the input is invalid.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED on memory-allocation failure.
* \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the point format
* is not implemented.
* \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the import for the
* given group is not implemented.
*/
int mbedtls_ecp_point_read_binary( const mbedtls_ecp_group *grp,
mbedtls_ecp_point *P,
@ -1093,6 +1114,26 @@ int mbedtls_ecp_gen_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
/**
* \brief This function reads an elliptic curve private key.
*
* \param grp_id The ECP group identifier.
* \param key The destination key.
* \param buf The the buffer containing the binary representation of the
* key. (Big endian integer for Weierstrass curves, byte
* string for Montgomery curves.)
* \param buflen The length of the buffer in bytes.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_ECP_INVALID_KEY error if the key is
* invalid.
* \return #MBEDTLS_ERR_MPI_ALLOC_FAILED if memory allocation failed.
* \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the operation for
* the group is not implemented.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_ecp_read_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
const unsigned char *buf, size_t buflen );
/**
* \brief This function checks that the keypair objects
* \p pub and \p prv have the same group and the

View file

@ -813,6 +813,39 @@ static void mpi_bigendian_to_host( mbedtls_mpi_uint * const p, size_t limbs )
}
}
/*
* Import X from unsigned binary data, little endian
*/
int mbedtls_mpi_read_binary_le( mbedtls_mpi *X,
const unsigned char *buf, size_t buflen )
{
int ret;
size_t i;
size_t const limbs = CHARS_TO_LIMBS( buflen );
/* Ensure that target MPI has exactly the necessary number of limbs */
if( X->n != limbs )
{
mbedtls_mpi_free( X );
mbedtls_mpi_init( X );
MBEDTLS_MPI_CHK( mbedtls_mpi_grow( X, limbs ) );
}
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( X, 0 ) );
for( i = 0; i < buflen; i++ )
X->p[i / ciL] |= ((mbedtls_mpi_uint) buf[i]) << ((i % ciL) << 3);
cleanup:
/*
* This function is also used to import keys. However, wiping the buffers
* upon failure is not necessary because failure only can happen before any
* input is copied.
*/
return( ret );
}
/*
* Import X from unsigned binary data, big endian
*/
@ -847,9 +880,53 @@ int mbedtls_mpi_read_binary( mbedtls_mpi *X, const unsigned char *buf, size_t bu
cleanup:
/*
* This function is also used to import keys. However, wiping the buffers
* upon failure is not necessary because failure only can happen before any
* input is copied.
*/
return( ret );
}
/*
* Export X into unsigned binary data, little endian
*/
int mbedtls_mpi_write_binary_le( const mbedtls_mpi *X,
unsigned char *buf, size_t buflen )
{
size_t stored_bytes = X->n * ciL;
size_t bytes_to_copy;
size_t i;
if( stored_bytes < buflen )
{
bytes_to_copy = stored_bytes;
}
else
{
bytes_to_copy = buflen;
/* The output buffer is smaller than the allocated size of X.
* However X may fit if its leading bytes are zero. */
for( i = bytes_to_copy; i < stored_bytes; i++ )
{
if( GET_BYTE( X, i ) != 0 )
return( MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL );
}
}
for( i = 0; i < bytes_to_copy; i++ )
buf[i] = GET_BYTE( X, i );
if( stored_bytes < buflen )
{
/* Write trailing 0 bytes */
memset( buf + stored_bytes, 0, buflen - stored_bytes );
}
return( 0 );
}
/*
* Export X into unsigned binary data, big endian
*/

View file

@ -637,6 +637,10 @@ static int ecdh_calc_secret_internal( mbedtls_ecdh_context_mbed *ctx,
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
*olen = ctx->grp.pbits / 8 + ( ( ctx->grp.pbits % 8 ) != 0 );
if( mbedtls_ecp_get_type( &ctx->grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
return mbedtls_mpi_write_binary_le( &ctx->z, buf, *olen );
return mbedtls_mpi_write_binary( &ctx->z, buf, *olen );
}

View file

@ -363,16 +363,6 @@ int mbedtls_ecp_check_budget( const mbedtls_ecp_group *grp,
#define ECP_MONTGOMERY
#endif
/*
* Curve types: internal for now, might be exposed later
*/
typedef enum
{
ECP_TYPE_NONE = 0,
ECP_TYPE_SHORT_WEIERSTRASS, /* y^2 = x^3 + a x + b */
ECP_TYPE_MONTGOMERY, /* y^2 = x^3 + a x^2 + x */
} ecp_curve_type;
/*
* List of supported curves:
* - internal ID
@ -522,15 +512,15 @@ const mbedtls_ecp_curve_info *mbedtls_ecp_curve_info_from_name( const char *name
/*
* Get the type of a curve
*/
static inline ecp_curve_type ecp_get_type( const mbedtls_ecp_group *grp )
mbedtls_ecp_curve_type mbedtls_ecp_get_type( const mbedtls_ecp_group *grp )
{
if( grp->G.X.p == NULL )
return( ECP_TYPE_NONE );
return( MBEDTLS_ECP_TYPE_NONE );
if( grp->G.Y.p == NULL )
return( ECP_TYPE_MONTGOMERY );
return( MBEDTLS_ECP_TYPE_MONTGOMERY );
else
return( ECP_TYPE_SHORT_WEIERSTRASS );
return( MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS );
}
/*
@ -729,14 +719,14 @@ cleanup:
}
/*
* Export a point into unsigned binary data (SEC1 2.3.3)
* Export a point into unsigned binary data (SEC1 2.3.3 and RFC7748)
*/
int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp,
const mbedtls_ecp_point *P,
int format, size_t *olen,
unsigned char *buf, size_t buflen )
{
int ret = 0;
int ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
size_t plen;
ECP_VALIDATE_RET( grp != NULL );
ECP_VALIDATE_RET( P != NULL );
@ -745,56 +735,71 @@ int mbedtls_ecp_point_write_binary( const mbedtls_ecp_group *grp,
ECP_VALIDATE_RET( format == MBEDTLS_ECP_PF_UNCOMPRESSED ||
format == MBEDTLS_ECP_PF_COMPRESSED );
/*
* Common case: P == 0
*/
if( mbedtls_mpi_cmp_int( &P->Z, 0 ) == 0 )
{
if( buflen < 1 )
return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
buf[0] = 0x00;
*olen = 1;
return( 0 );
}
plen = mbedtls_mpi_size( &grp->P );
if( format == MBEDTLS_ECP_PF_UNCOMPRESSED )
#if defined(ECP_MONTGOMERY)
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
{
*olen = 2 * plen + 1;
*olen = plen;
if( buflen < *olen )
return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
buf[0] = 0x04;
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &P->X, buf + 1, plen ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &P->Y, buf + 1 + plen, plen ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary_le( &P->X, buf, plen ) );
}
else if( format == MBEDTLS_ECP_PF_COMPRESSED )
#endif
#if defined(ECP_SHORTWEIERSTRASS)
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
{
*olen = plen + 1;
/*
* Common case: P == 0
*/
if( mbedtls_mpi_cmp_int( &P->Z, 0 ) == 0 )
{
if( buflen < 1 )
return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
if( buflen < *olen )
return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
buf[0] = 0x00;
*olen = 1;
buf[0] = 0x02 + mbedtls_mpi_get_bit( &P->Y, 0 );
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &P->X, buf + 1, plen ) );
return( 0 );
}
if( format == MBEDTLS_ECP_PF_UNCOMPRESSED )
{
*olen = 2 * plen + 1;
if( buflen < *olen )
return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
buf[0] = 0x04;
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &P->X, buf + 1, plen ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &P->Y, buf + 1 + plen, plen ) );
}
else if( format == MBEDTLS_ECP_PF_COMPRESSED )
{
*olen = plen + 1;
if( buflen < *olen )
return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
buf[0] = 0x02 + mbedtls_mpi_get_bit( &P->Y, 0 );
MBEDTLS_MPI_CHK( mbedtls_mpi_write_binary( &P->X, buf + 1, plen ) );
}
}
#endif
cleanup:
return( ret );
}
/*
* Import a point from unsigned binary data (SEC1 2.3.4)
* Import a point from unsigned binary data (SEC1 2.3.4 and RFC7748)
*/
int mbedtls_ecp_point_read_binary( const mbedtls_ecp_group *grp,
mbedtls_ecp_point *pt,
const unsigned char *buf, size_t ilen )
{
int ret;
int ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
size_t plen;
ECP_VALIDATE_RET( grp != NULL );
ECP_VALIDATE_RET( pt != NULL );
@ -803,25 +808,47 @@ int mbedtls_ecp_point_read_binary( const mbedtls_ecp_group *grp,
if( ilen < 1 )
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
if( buf[0] == 0x00 )
{
if( ilen == 1 )
return( mbedtls_ecp_set_zero( pt ) );
else
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
}
plen = mbedtls_mpi_size( &grp->P );
if( buf[0] != 0x04 )
return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
#if defined(ECP_MONTGOMERY)
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
{
if( plen != ilen )
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
if( ilen != 2 * plen + 1 )
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary_le( &pt->X, buf, plen ) );
mbedtls_mpi_free( &pt->Y );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &pt->X, buf + 1, plen ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &pt->Y, buf + 1 + plen, plen ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &pt->Z, 1 ) );
if( grp->id == MBEDTLS_ECP_DP_CURVE25519 )
/* Set most significant bit to 0 as prescribed in RFC7748 §5 */
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( &pt->X, plen * 8 - 1, 0 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &pt->Z, 1 ) );
}
#endif
#if defined(ECP_SHORTWEIERSTRASS)
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
{
if( buf[0] == 0x00 )
{
if( ilen == 1 )
return( mbedtls_ecp_set_zero( pt ) );
else
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
}
if( buf[0] != 0x04 )
return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
if( ilen != 2 * plen + 1 )
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &pt->X, buf + 1, plen ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &pt->Y,
buf + 1 + plen, plen ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &pt->Z, 1 ) );
}
#endif
cleanup:
return( ret );
@ -2357,11 +2384,11 @@ int mbedtls_ecp_mul_restartable( mbedtls_ecp_group *grp, mbedtls_ecp_point *R,
ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
#if defined(ECP_MONTGOMERY)
if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY )
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
MBEDTLS_MPI_CHK( ecp_mul_mxz( grp, R, m, P, f_rng, p_rng ) );
#endif
#if defined(ECP_SHORTWEIERSTRASS)
if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS )
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
MBEDTLS_MPI_CHK( ecp_mul_comb( grp, R, m, P, f_rng, p_rng, rs_ctx ) );
#endif
@ -2500,7 +2527,7 @@ int mbedtls_ecp_muladd_restartable(
ECP_VALIDATE_RET( n != NULL );
ECP_VALIDATE_RET( Q != NULL );
if( ecp_get_type( grp ) != ECP_TYPE_SHORT_WEIERSTRASS )
if( mbedtls_ecp_get_type( grp ) != MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
return( MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE );
mbedtls_ecp_point_init( &mP );
@ -2620,11 +2647,11 @@ int mbedtls_ecp_check_pubkey( const mbedtls_ecp_group *grp,
return( MBEDTLS_ERR_ECP_INVALID_KEY );
#if defined(ECP_MONTGOMERY)
if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY )
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
return( ecp_check_pubkey_mx( grp, pt ) );
#endif
#if defined(ECP_SHORTWEIERSTRASS)
if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS )
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
return( ecp_check_pubkey_sw( grp, pt ) );
#endif
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
@ -2640,7 +2667,7 @@ int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp,
ECP_VALIDATE_RET( d != NULL );
#if defined(ECP_MONTGOMERY)
if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY )
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
{
/* see RFC 7748 sec. 5 para. 5 */
if( mbedtls_mpi_get_bit( d, 0 ) != 0 ||
@ -2656,7 +2683,7 @@ int mbedtls_ecp_check_privkey( const mbedtls_ecp_group *grp,
}
#endif /* ECP_MONTGOMERY */
#if defined(ECP_SHORTWEIERSTRASS)
if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS )
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
{
/* see SEC1 3.2 */
if( mbedtls_mpi_cmp_int( d, 1 ) < 0 ||
@ -2688,7 +2715,7 @@ int mbedtls_ecp_gen_privkey( const mbedtls_ecp_group *grp,
n_size = ( grp->nbits + 7 ) / 8;
#if defined(ECP_MONTGOMERY)
if( ecp_get_type( grp ) == ECP_TYPE_MONTGOMERY )
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
{
/* [M225] page 5 */
size_t b;
@ -2716,7 +2743,7 @@ int mbedtls_ecp_gen_privkey( const mbedtls_ecp_group *grp,
#endif /* ECP_MONTGOMERY */
#if defined(ECP_SHORTWEIERSTRASS)
if( ecp_get_type( grp ) == ECP_TYPE_SHORT_WEIERSTRASS )
if( mbedtls_ecp_get_type( grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
{
/* SEC1 3.2.1: Generate d such that 1 <= n < N */
int count = 0;
@ -2809,6 +2836,75 @@ int mbedtls_ecp_gen_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
return( mbedtls_ecp_gen_keypair( &key->grp, &key->d, &key->Q, f_rng, p_rng ) );
}
#define ECP_CURVE25519_KEY_SIZE 32
/*
* Read a private key.
*/
int mbedtls_ecp_read_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
const unsigned char *buf, size_t buflen )
{
int ret = 0;
ECP_VALIDATE_RET( key != NULL );
ECP_VALIDATE_RET( buf != NULL );
if( ( ret = mbedtls_ecp_group_load( &key->grp, grp_id ) ) != 0 )
return( ret );
ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
#if defined(ECP_MONTGOMERY)
if( mbedtls_ecp_get_type( &key->grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
{
/*
* If it is Curve25519 curve then mask the key as mandated by RFC7748
*/
if( grp_id == MBEDTLS_ECP_DP_CURVE25519 )
{
if( buflen != ECP_CURVE25519_KEY_SIZE )
return MBEDTLS_ERR_ECP_INVALID_KEY;
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary_le( &key->d, buf, buflen ) );
/* Set the three least significant bits to 0 */
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( &key->d, 0, 0 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( &key->d, 1, 0 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( &key->d, 2, 0 ) );
/* Set the most significant bit to 0 */
MBEDTLS_MPI_CHK(
mbedtls_mpi_set_bit( &key->d,
ECP_CURVE25519_KEY_SIZE * 8 - 1, 0 )
);
/* Set the second most significant bit to 1 */
MBEDTLS_MPI_CHK(
mbedtls_mpi_set_bit( &key->d,
ECP_CURVE25519_KEY_SIZE * 8 - 2, 1 )
);
}
else
ret = MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE;
}
#endif
#if defined(ECP_SHORTWEIERSTRASS)
if( mbedtls_ecp_get_type( &key->grp ) == MBEDTLS_ECP_TYPE_SHORT_WEIERSTRASS )
{
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary( &key->d, buf, buflen ) );
MBEDTLS_MPI_CHK( mbedtls_ecp_check_privkey( &key->grp, &key->d ) );
}
#endif
cleanup:
if( ret != 0 )
mbedtls_mpi_free( &key->d );
return( ret );
}
/*
* Check a public-private key pair
*/

View file

@ -88,6 +88,18 @@ ECDH calc_secret: theirs first, SECP256R1 (RFC 5903)
depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED
ecdh_exchange_calc_secret:MBEDTLS_ECP_DP_SECP256R1:"c6ef9c5d78ae012a011164acb397ce2088685d8f06bf9be0b283ab46476bee53":"04dad0b65394221cf9b051e1feca5787d098dfe637fc90b9ef945d0c37725811805271a0461cdb8252d61f1c456fa3e59ab1f45b33accf5f58389e0577b8990bb3":1:"d6840f6b42f6edafd13116e0e12565202fef8e9ece7dce03812464d04b9442de"
ecdh calc_secret: ours first (Alice), curve25519 (rfc 7748)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecdh_exchange_calc_secret:MBEDTLS_ECP_DP_CURVE25519:"77076d0a7318a57d3c16c17251b26645df4c2f87ebc0992ab177fba51db92c2a":"de9edb7d7b7dc1b4d35b61c2ece435373f8343c85b78674dadfc7e146f882b4f":0:"4a5d9d5ba4ce2de1728e3bf480350f25e07e21c947d19e3376f09b3c1e161742"
ecdh calc_secret: theirs first (Alice), curve25519 (rfc 7748)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecdh_exchange_calc_secret:MBEDTLS_ECP_DP_CURVE25519:"77076d0a7318a57d3c16c17251b26645df4c2f87ebc0992ab177fba51db92c2a":"de9edb7d7b7dc1b4d35b61c2ece435373f8343c85b78674dadfc7e146f882b4f":1:"4a5d9d5ba4ce2de1728e3bf480350f25e07e21c947d19e3376f09b3c1e161742"
ecdh calc_secret: ours first (Bob), curve25519 (rfc 7748)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecdh_exchange_calc_secret:MBEDTLS_ECP_DP_CURVE25519:"5dab087e624a8a4b79e17f8b83800ee66f3bb1292618b6fd1c2f8b27ff88e0eb":"8520f0098930a754748b7ddcb43ef75a0dbf3a0d26381af4eba4a98eaa9b4e6a":0:"4a5d9d5ba4ce2de1728e3bf480350f25e07e21c947d19e3376f09b3c1e161742"
ECDH get_params with mismatched groups: our BP256R1, their SECP256R1
depends_on:MBEDTLS_ECP_DP_SECP256R1_ENABLED:MBEDTLS_ECP_DP_BP256R1_ENABLED
ecdh_exchange_get_params_fail:MBEDTLS_ECP_DP_BP256R1:"1234567812345678123456781234567812345678123456781234567812345678":MBEDTLS_ECP_DP_SECP256R1:"04dad0b65394221cf9b051e1feca5787d098dfe637fc90b9ef945d0c37725811805271a0461cdb8252d61f1c456fa3e59ab1f45b33accf5f58389e0577b8990bb3":0:MBEDTLS_ERR_ECP_BAD_INPUT_DATA

View file

@ -22,10 +22,9 @@ static int load_private_key( int grp_id, data_t *private_key,
rnd_pseudo_info *rnd_info )
{
int ok = 0;
TEST_ASSERT( mbedtls_ecp_group_load( &ecp->grp, grp_id ) == 0 );
TEST_ASSERT( mbedtls_mpi_read_binary( &ecp->d,
private_key->x,
private_key->len ) == 0 );
TEST_ASSERT( mbedtls_ecp_read_key( grp_id, ecp,
private_key->x,
private_key->len ) == 0 );
TEST_ASSERT( mbedtls_ecp_check_privkey( &ecp->grp, &ecp->d ) == 0 );
/* Calculate the public key from the private key. */
TEST_ASSERT( mbedtls_ecp_mul( &ecp->grp, &ecp->Q, &ecp->d,

View file

@ -88,6 +88,14 @@ ECP write binary #9 (odd, compressed, buffer just fits)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
ecp_write_binary:MBEDTLS_ECP_DP_SECP192R1:"48d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc9933":"93112b28345b7d1d7799611e49bea9d8290cb2d7afe1f9f3":"01":MBEDTLS_ECP_PF_COMPRESSED:"0348d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc9933":25:0
ECP write binary #10 (Montgomery, buffer just fits)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecp_write_binary:MBEDTLS_ECP_DP_CURVE25519:"11223344556677889900aabbccddeeff11223344556677889900aabbccddeeff":"0":"1":MBEDTLS_ECP_PF_COMPRESSED:"ffeeddccbbaa00998877665544332211ffeeddccbbaa00998877665544332211":32:0
ECP write binary #11 (Montgomery, buffer too small)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecp_write_binary:MBEDTLS_ECP_DP_CURVE25519:"11223344556677889900aabbccddeeff11223344556677889900aabbccddeeff":"0":"1":MBEDTLS_ECP_PF_COMPRESSED:"ffeeddccbbaa00998877665544332211ffeeddccbbaa00998877665544332211":31:MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL
ECP read binary #1 (zero, invalid ilen)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
ecp_read_binary:MBEDTLS_ECP_DP_SECP192R1:"0000":"01":"01":"00":MBEDTLS_ERR_ECP_BAD_INPUT_DATA
@ -112,6 +120,30 @@ ECP read binary #6 (non-zero, OK)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
ecp_read_binary:MBEDTLS_ECP_DP_SECP192R1:"0448d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc99336ceed4d7cba482e288669ee1b6415626d6f34d28501e060c":"48d8082a3a1e3112bc03a8ef2f6d40d0a77a6f8e00cc9933":"6ceed4d7cba482e288669ee1b6415626d6f34d28501e060c":"01":0
ECP read binary #7 (Curve25519, OK)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecp_read_binary:MBEDTLS_ECP_DP_CURVE25519:"8520f0098930a754748b7ddcb43ef75a0dbf3a0d26381af4eba4a98eaa9b4e6a":"6a4e9baa8ea9a4ebf41a38260d3abf0d5af73eb4dc7d8b7454a7308909f02085":"0":"1":0
ECP read binary #8 (Curve25519, masked first bit)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecp_read_binary:MBEDTLS_ECP_DP_CURVE25519:"8520f0098930a754748b7ddcb43ef75a0dbf3a0d26381af4eba4a98eaa9b4efa":"7a4e9baa8ea9a4ebf41a38260d3abf0d5af73eb4dc7d8b7454a7308909f02085":"0":"1":0
ECP read binary #9 (Curve25519, too short)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecp_read_binary:MBEDTLS_ECP_DP_CURVE25519:"20f0098930a754748b7ddcb43ef75a0dbf3a0d26381af4eba4a98eaa9b4e6a":"6a4e9baa8ea9a4ebf41a38260d3abf0d5af73eb4dc7d8b7454a7308909f020":"0":"1":MBEDTLS_ERR_ECP_BAD_INPUT_DATA
ECP read binary #10 (Curve25519, non-canonical)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecp_read_binary:MBEDTLS_ECP_DP_CURVE25519:"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff7f":"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff":"0":"1":0
ECP read binary #11 (Curve25519, masked non-canonical)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecp_read_binary:MBEDTLS_ECP_DP_CURVE25519:"ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff":"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff":"0":"1":0
ECP read binary #12 (Curve25519, too long)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
ecp_read_binary:MBEDTLS_ECP_DP_CURVE25519:"8520f0098930a754748b7ddcb43ef75a0dbf3a0d26381af4eba4a98eaa9b4e6a00":"6a4e9baa8ea9a4ebf41a38260d3abf0d5af73eb4dc7d8b7454a7308909f02085":"0":"1":MBEDTLS_ERR_ECP_BAD_INPUT_DATA
ECP tls read point #1 (zero, invalid length byte)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
mbedtls_ecp_tls_read_point:MBEDTLS_ECP_DP_SECP192R1:"0200":"01":"01":"00":MBEDTLS_ERR_ECP_BAD_INPUT_DATA
@ -244,6 +276,68 @@ ECP gen keypair wrapper
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
mbedtls_ecp_gen_key:MBEDTLS_ECP_DP_SECP192R1
ECP read key #1 (short weierstrass, too small)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_SECP192R1:"00":MBEDTLS_ERR_ECP_INVALID_KEY
ECP read key #2 (short weierstrass, smallest)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_SECP192R1:"01":0
ECP read key #3 (short weierstrass, biggest)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_SECP192R1:"FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22830":0
ECP read key #4 (short weierstrass, too big)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_SECP192R1:"FFFFFFFFFFFFFFFFFFFFFFFF99DEF836146BC9B1B4D22831":MBEDTLS_ERR_ECP_INVALID_KEY
ECP read key #5 (Curve25519, most significant bit set)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"000000000000000000000000000000000000000000000000000000000000000C":0
ECP read key #6 (Curve25519, second most significant bit unset)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF3":0
ECP read key #7 (Curve25519, msb OK)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"0000000000000000000000000000000000000000000000000000000000000004":0
ECP read key #8 (Curve25519, bit 0 set)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"1000000000000000000000000000000000000000000000000000000000000000":0
ECP read key #9 (Curve25519, bit 1 set)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"2000000000000000000000000000000000000000000000000000000000000004":0
ECP read key #10 (Curve25519, bit 2 set)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"4000000000000000000000000000000000000000000000000000000000000004":0
ECP read key #11 (Curve25519, OK)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"8FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7":0
ECP read key #12 (Curve25519, too long)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"00000000000000000000000000000000000000000000000000000000000000000C":MBEDTLS_ERR_ECP_INVALID_KEY
ECP read key #13 (Curve25519, not long enough)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF3":MBEDTLS_ERR_ECP_INVALID_KEY
ECP read key #14 (Curve448, not supported)
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE448:"FCFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF":MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE
ECP read key #15 (Curve25519, not supported)
depends_on:!MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"8FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7":MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE
ECP read key #15 (invalid curve)
mbedtls_ecp_read_key:INT_MAX:"8FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF7":MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE
ECP mod p192 small (more than 192 bits, less limbs than 2 * 192 bits)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
ecp_fast_mod:MBEDTLS_ECP_DP_SECP192R1:"0100000000000103010000000000010201000000000001010100000000000100"

View file

@ -762,8 +762,18 @@ void ecp_read_binary( int id, data_t * buf, char * x, char * y, char * z,
if( ret == 0 )
{
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &P.X, &X ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &P.Y, &Y ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &P.Z, &Z ) == 0 );
if( mbedtls_ecp_get_type( &grp ) == MBEDTLS_ECP_TYPE_MONTGOMERY )
{
TEST_ASSERT( mbedtls_mpi_cmp_int( &Y, 0 ) == 0 );
TEST_ASSERT( P.Y.p == NULL );
TEST_ASSERT( mbedtls_mpi_cmp_int( &Z, 1 ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_int( &P.Z, 1 ) == 0 );
}
else
{
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &P.Y, &Y ) == 0 );
TEST_ASSERT( mbedtls_mpi_cmp_mpi( &P.Z, &Z ) == 0 );
}
}
exit:
@ -1008,6 +1018,28 @@ exit:
}
/* END_CASE */
/* BEGIN_CASE */
void mbedtls_ecp_read_key( int grp_id, data_t* in_key, int expected )
{
int ret = 0;
mbedtls_ecp_keypair key;
mbedtls_ecp_keypair_init( &key );
ret = mbedtls_ecp_read_key( grp_id, &key, in_key->x, in_key->len );
TEST_ASSERT( ret == expected );
if( expected == 0 )
{
ret = mbedtls_ecp_check_privkey( &key.grp, &key.d );
TEST_ASSERT( ret == 0 );
}
exit:
mbedtls_ecp_keypair_free( &key );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_SELF_TEST */
void ecp_selftest( )
{

View file

@ -58,6 +58,9 @@ mpi_read_write_string:16:"-1":16:"":3:0:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
Base test mbedtls_mpi_read_binary #1
mbedtls_mpi_read_binary:"0941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":10:"56125680981752282334141896320372489490613963693556392520816017892111350604111697682705498319512049040516698827829292076808006940873974979584527073481012636016353913462376755556720019831187364993587901952757307830896531678727717924"
Base test mbedtls_mpi_read_binary_le #1
mbedtls_mpi_read_binary_le:"0941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":10:"219946662473865722255717126709915431768051735954189829340600976826409773245337023925691629251672268961177825243440202069039100741562168093042339401187848509859789949044607421190014088260008793380554914226244485299326152319899746569"
Base test mbedtls_mpi_write_binary #1
mbedtls_mpi_write_binary:10:"56125680981752282334141896320372489490613963693556392520816017892111350604111697682705498319512049040516698827829292076808006940873974979584527073481012636016353913462376755556720019831187364993587901952757307830896531678727717924":"0941379d00fed1491fe15df284dfde4a142f68aa8d412023195cee66883e6290ffe703f4ea5963bf212713cee46b107c09182b5edcd955adac418bf4918e2889af48e1099d513830cec85c26ac1e158b52620e33ba8692f893efbb2f958b4424":200:0
@ -67,6 +70,15 @@ mbedtls_mpi_write_binary:16:"123123123123123123123123123":"012312312312312312312
Test mbedtls_mpi_write_binary #2 (Buffer too small)
mbedtls_mpi_write_binary:16:"123123123123123123123123123":"23123123123123123123123123":13:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
Base test mbedtls_mpi_write_binary_le #1
mbedtls_mpi_write_binary_le:10:"56125680981752282334141896320372489490613963693556392520816017892111350604111697682705498319512049040516698827829292076808006940873974979584527073481012636016353913462376755556720019831187364993587901952757307830896531678727717924":"24448b952fbbef93f89286ba330e62528b151eac265cc8ce3038519d09e148af89288e91f48b41acad55d9dc5e2b18097c106be4ce132721bf6359eaf403e7ff90623e8866ee5c192320418daa682f144adedf84f25de11f49d1fe009d374109":200:0
Test mbedtls_mpi_write_binary_le #1 (Buffer just fits)
mbedtls_mpi_write_binary_le:16:"123123123123123123123123123":"2331122331122331122331122301":14:0
Test mbedtls_mpi_write_binary_le #2 (Buffer too small)
mbedtls_mpi_write_binary_le:16:"123123123123123123123123123":"23311223311223311223311223":13:MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL
Base test mbedtls_mpi_read_file #1
mbedtls_mpi_read_file:10:"data_files/mpi_10":"01f55332c3a48b910f9942f6c914e58bef37a47ee45cb164a5b6b8d1006bf59a059c21449939ebebfdf517d2e1dbac88010d7b1f141e997bd6801ddaec9d05910f4f2de2b2c4d714e2c14a72fc7f17aa428d59c531627f09":0

View file

@ -313,14 +313,33 @@ exit:
void mbedtls_mpi_read_binary( data_t * buf, int radix_A, char * input_A )
{
mbedtls_mpi X;
unsigned char str[1000];
char str[1000];
size_t len;
mbedtls_mpi_init( &X );
TEST_ASSERT( mbedtls_mpi_read_binary( &X, buf->x, buf->len ) == 0 );
TEST_ASSERT( mbedtls_mpi_write_string( &X, radix_A, (char *) str, sizeof( str ), &len ) == 0 );
TEST_ASSERT( mbedtls_mpi_write_string( &X, radix_A, str, sizeof( str ), &len ) == 0 );
TEST_ASSERT( strcmp( (char *) str, input_A ) == 0 );
exit:
mbedtls_mpi_free( &X );
}
/* END_CASE */
/* BEGIN_CASE */
void mbedtls_mpi_read_binary_le( data_t * buf, int radix_A, char * input_A )
{
mbedtls_mpi X;
char str[1000];
size_t len;
mbedtls_mpi_init( &X );
TEST_ASSERT( mbedtls_mpi_read_binary_le( &X, buf->x, buf->len ) == 0 );
TEST_ASSERT( mbedtls_mpi_write_string( &X, radix_A, str, sizeof( str ), &len ) == 0 );
TEST_ASSERT( strcmp( (char *) str, input_A ) == 0 );
exit:
@ -359,6 +378,37 @@ exit:
}
/* END_CASE */
/* BEGIN_CASE */
void mbedtls_mpi_write_binary_le( int radix_X, char * input_X,
data_t * input_A, int output_size,
int result )
{
mbedtls_mpi X;
unsigned char buf[1000];
size_t buflen;
memset( buf, 0x00, 1000 );
mbedtls_mpi_init( &X );
TEST_ASSERT( mbedtls_mpi_read_string( &X, radix_X, input_X ) == 0 );
buflen = mbedtls_mpi_size( &X );
if( buflen > (size_t) output_size )
buflen = (size_t) output_size;
TEST_ASSERT( mbedtls_mpi_write_binary_le( &X, buf, buflen ) == result );
if( result == 0)
{
TEST_ASSERT( hexcmp( buf, input_A->x, buflen, input_A->len ) == 0 );
}
exit:
mbedtls_mpi_free( &X );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_FS_IO */
void mbedtls_mpi_read_file( int radix_X, char * input_file,
data_t * input_A, int result )