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Change pk_set_type to pk_init_ctx for consistency

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This commit is contained in:
Manuel Pégourié-Gonnard 2013-08-15 11:30:27 +02:00
parent 7e56de1671
commit ab46694558
3 changed files with 65 additions and 39 deletions
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37
include/polarssl/pk.h
View File

@ -147,31 +147,38 @@ typedef struct
void * pk_ctx; /**< Underlying public key context */
} pk_context;
/**
* \brief Return information associated with the given PK type
*
* \param type PK type to search for.
*
* \return The PK info associated with the type or NULL if not found.
*/
const pk_info_t *pk_info_from_type( pk_type_t pk_type );
/**
* \brief Initialize a pk_context (as NONE)
*/
void pk_init( pk_context *ctx );
/**
* \brief Initialize a PK context with the information given
* and allocates the type-specific PK subcontext.
*
* \param ctx Context to initialize. Must be empty (type NONE).
* \param info Information to use
*
* \return 0 on success,
* POLARSSL_ERR_PK_BAD_INPUT_DATA on invalid input,
* POLARSSL_ERR_PK_MALLOC_FAILED on allocation failure.
*/
int pk_init_ctx( pk_context *ctx, const pk_info_t *info );
/**
* \brief Free a pk_context
*/
void pk_free( pk_context *ctx );
/**
* \brief Set a pk_context to a given type
*
* \param ctx Context to initialize
* \param type Type of key
*
* \note Once the type of a key has been set, it cannot be reset.
* If you want to do so, you need to use pk_free() first.
*
* \return O on success,
* POLARSSL_ERR_PK_MALLOC_FAILED on memory allocation fail,
* POLARSSL_ERR_PK_TYPE_MISMATCH on attempts to reset type.
*/
int pk_set_type( pk_context *ctx, pk_type_t type );
/**
* \brief Get the size in bits of the underlying key
*

18
library/pk.c
View File

@ -67,7 +67,7 @@ void pk_free( pk_context *ctx )
/*
* Get pk_info structure from type
*/
static const pk_info_t * pk_info_from_type( pk_type_t pk_type )
const pk_info_t * pk_info_from_type( pk_type_t pk_type )
{
switch( pk_type ) {
#if defined(POLARSSL_RSA_C)
@ -90,21 +90,11 @@ static const pk_info_t * pk_info_from_type( pk_type_t pk_type )
}
/*
* Set a pk_context to a given type
* Initialise context
*/
int pk_set_type( pk_context *ctx, pk_type_t type )
int pk_init_ctx( pk_context *ctx, const pk_info_t *info )
{
const pk_info_t *info;
if( ctx->pk_info != NULL )
{
if( ctx->pk_info->type == type )
return 0;
return( POLARSSL_ERR_PK_TYPE_MISMATCH );
}
if( ( info = pk_info_from_type( type ) ) == NULL )
if( ctx == NULL || info == NULL || ctx->pk_info != NULL )
return( POLARSSL_ERR_PK_BAD_INPUT_DATA );
if( ( ctx->pk_ctx = info->ctx_alloc_func() ) == NULL )

49
library/x509parse.c
View File

@ -570,6 +570,7 @@ static int x509_get_pubkey( unsigned char **p,
size_t len;
x509_buf alg_params;
pk_type_t pk_alg = POLARSSL_PK_NONE;
const pk_info_t *pk_info;
if( ( ret = asn1_get_tag( p, end, &len,
ASN1_CONSTRUCTED | ASN1_SEQUENCE ) ) != 0 )
@ -589,7 +590,10 @@ static int x509_get_pubkey( unsigned char **p,
return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY +
POLARSSL_ERR_ASN1_LENGTH_MISMATCH );
if( ( ret = pk_set_type( pk, pk_alg ) ) != 0 )
if( ( pk_info = pk_info_from_type( pk_alg ) ) == NULL )
return( POLARSSL_ERR_X509_UNKNOWN_PK_ALG );
if( ( ret = pk_init_ctx( pk, pk_info ) ) != 0 )
return( ret );
#if defined(POLARSSL_RSA_C)
@ -2142,10 +2146,12 @@ int x509parse_keyfile_rsa( rsa_context *rsa, const char *path, const char *pwd )
pk_context pk;
pk_init( &pk );
pk_set_type( &pk, POLARSSL_PK_RSA );
ret = x509parse_keyfile( &pk, path, pwd );
if( ret == 0 && ! pk_can_do( &pk, POLARSSL_PK_RSA ) )
ret = POLARSSL_ERR_PK_TYPE_MISMATCH;
if( ret == 0 )
rsa_copy( rsa, pk_rsa( pk ) );
else
@ -2165,10 +2171,12 @@ int x509parse_public_keyfile_rsa( rsa_context *rsa, const char *path )
pk_context pk;
pk_init( &pk );
pk_set_type( &pk, POLARSSL_PK_RSA );
ret = x509parse_public_keyfile( &pk, path );
if( ret == 0 && ! pk_can_do( &pk, POLARSSL_PK_RSA ) )
ret = POLARSSL_ERR_PK_TYPE_MISMATCH;
if( ret == 0 )
rsa_copy( rsa, pk_rsa( pk ) );
else
@ -2380,6 +2388,7 @@ static int x509parse_key_pkcs8_unencrypted_der(
unsigned char *p = (unsigned char *) key;
unsigned char *end = p + keylen;
pk_type_t pk_alg = POLARSSL_PK_NONE;
const pk_info_t *pk_info;
/*
* This function parses the PrivatKeyInfo object (PKCS#8 v1.2 = RFC 5208)
@ -2421,7 +2430,10 @@ static int x509parse_key_pkcs8_unencrypted_der(
return( POLARSSL_ERR_X509_KEY_INVALID_FORMAT +
POLARSSL_ERR_ASN1_OUT_OF_DATA );
if( ( ret = pk_set_type( pk, pk_alg ) ) != 0 )
if( ( pk_info = pk_info_from_type( pk_alg ) ) == NULL )
return( POLARSSL_ERR_X509_UNKNOWN_PK_ALG );
if( ( ret = pk_init_ctx( pk, pk_info ) ) != 0 )
return( ret );
#if defined(POLARSSL_RSA_C)
@ -2568,6 +2580,7 @@ int x509parse_key( pk_context *pk,
const unsigned char *pwd, size_t pwdlen )
{
int ret;
const pk_info_t *pk_info;
#if defined(POLARSSL_PEM_C)
size_t len;
@ -2582,7 +2595,10 @@ int x509parse_key( pk_context *pk,
key, pwd, pwdlen, &len );
if( ret == 0 )
{
if( ( ret = pk_set_type( pk, POLARSSL_PK_RSA ) ) != 0 ||
if( ( pk_info = pk_info_from_type( POLARSSL_PK_RSA ) ) == NULL )
return( POLARSSL_ERR_X509_UNKNOWN_PK_ALG );
if( ( ret = pk_init_ctx( pk, pk_info ) ) != 0 ||
( ret = x509parse_key_pkcs1_der( pk_rsa( *pk ),
pem.buf, pem.buflen ) ) != 0 )
{
@ -2607,7 +2623,10 @@ int x509parse_key( pk_context *pk,
key, pwd, pwdlen, &len );
if( ret == 0 )
{
if( ( ret = pk_set_type( pk, POLARSSL_PK_ECKEY ) ) != 0 ||
if( ( pk_info = pk_info_from_type( POLARSSL_PK_ECKEY ) ) == NULL )
return( POLARSSL_ERR_X509_UNKNOWN_PK_ALG );
if( ( ret = pk_init_ctx( pk, pk_info ) ) != 0 ||
( ret = x509parse_key_sec1_der( pk_ec( *pk ),
pem.buf, pem.buflen ) ) != 0 )
{
@ -2692,7 +2711,10 @@ int x509parse_key( pk_context *pk,
pk_free( pk );
#if defined(POLARSSL_RSA_C)
if( ( ret = pk_set_type( pk, POLARSSL_PK_RSA ) ) == 0 &&
if( ( pk_info = pk_info_from_type( POLARSSL_PK_RSA ) ) == NULL )
return( POLARSSL_ERR_X509_UNKNOWN_PK_ALG );
if( ( ret = pk_init_ctx( pk, pk_info ) ) != 0 ||
( ret = x509parse_key_pkcs1_der( pk_rsa( *pk ), key, keylen ) ) == 0 )
{
return( 0 );
@ -2702,7 +2724,10 @@ int x509parse_key( pk_context *pk,
#endif /* POLARSSL_RSA_C */
#if defined(POLARSSL_ECP_C)
if( ( ret = pk_set_type( pk, POLARSSL_PK_ECKEY ) ) == 0 &&
if( ( pk_info = pk_info_from_type( POLARSSL_PK_ECKEY ) ) == NULL )
return( POLARSSL_ERR_X509_UNKNOWN_PK_ALG );
if( ( ret = pk_init_ctx( pk, pk_info ) ) != 0 ||
( ret = x509parse_key_sec1_der( pk_ec( *pk ), key, keylen ) ) == 0 )
{
return( 0 );
@ -2769,10 +2794,12 @@ int x509parse_key_rsa( rsa_context *rsa,
pk_context pk;
pk_init( &pk );
pk_set_type( &pk, POLARSSL_PK_RSA );
ret = x509parse_key( &pk, key, keylen, pwd, pwdlen );
if( ret == 0 && ! pk_can_do( &pk, POLARSSL_PK_RSA ) )
ret = POLARSSL_ERR_PK_TYPE_MISMATCH;
if( ret == 0 )
rsa_copy( rsa, pk_rsa( pk ) );
else
@ -2793,10 +2820,12 @@ int x509parse_public_key_rsa( rsa_context *rsa,
pk_context pk;
pk_init( &pk );
pk_set_type( &pk, POLARSSL_PK_RSA );
ret = x509parse_public_key( &pk, key, keylen );
if( ret == 0 && ! pk_can_do( &pk, POLARSSL_PK_RSA ) )
ret = POLARSSL_ERR_PK_TYPE_MISMATCH;
if( ret == 0 )
rsa_copy( rsa, pk_rsa( pk ) );
else