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Add Cipher module parameter validation

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This commit is contained in:
Krzysztof Stachowiak 2018-12-17 10:20:30 +01:00 committed by k-stachowiak
parent 54b789aa74
commit e0215d7869
5 changed files with 441 additions and 80 deletions
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186
include/mbedtls/cipher.h
View File

@ -336,11 +336,12 @@ const int *mbedtls_cipher_list( void );
* \brief This function retrieves the cipher-information
* structure associated with the given cipher name.
*
* \param cipher_name Name of the cipher to search for.
* \param cipher_name Name of the cipher to search for. This can be \c NULL.
*
* \return The cipher information structure associated with the
* given \p cipher_name.
* \return NULL if the associated cipher information is not found.
* \return \c NULL if the associated cipher information is not found
* or if \p cipher_name is \c NULL.
*/
const mbedtls_cipher_info_t *mbedtls_cipher_info_from_string( const char *cipher_name );
@ -352,7 +353,7 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_string( const char *cipher
*
* \return The cipher information structure associated with the
* given \p cipher_type.
* \return NULL if the associated cipher information is not found.
* \return \c NULL if the associated cipher information is not found.
*/
const mbedtls_cipher_info_t *mbedtls_cipher_info_from_type( const mbedtls_cipher_type_t cipher_type );
@ -368,7 +369,7 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_type( const mbedtls_cipher
*
* \return The cipher information structure associated with the
* given \p cipher_id.
* \return NULL if the associated cipher information is not found.
* \return \c NULL if the associated cipher information is not found.
*/
const mbedtls_cipher_info_t *mbedtls_cipher_info_from_values( const mbedtls_cipher_id_t cipher_id,
int key_bitlen,
@ -376,6 +377,8 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_values( const mbedtls_ciph
/**
* \brief This function initializes a \p cipher_context as NONE.
*
* \param ctx The context to be initialized. This must not be \c NULL.
*/
void mbedtls_cipher_init( mbedtls_cipher_context_t *ctx );
@ -383,6 +386,9 @@ void mbedtls_cipher_init( mbedtls_cipher_context_t *ctx );
* \brief This function frees and clears the cipher-specific
* context of \p ctx. Freeing \p ctx itself remains the
* responsibility of the caller.
*
* \param ctx The context to be freed. If this is \c NULL, the
* function has no effect.
*/
void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx );
@ -392,8 +398,8 @@ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx );
* structure with the appropriate values. It also clears
* the structure.
*
* \param ctx The context to initialize. May not be NULL.
* \param cipher_info The cipher to use.
* \param ctx The context to initialize. This must be initialized.
* \param cipher_info The cipher to use. This may not be \c NULL.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
@ -405,17 +411,19 @@ void mbedtls_cipher_free( mbedtls_cipher_context_t *ctx );
* In future versions, the caller will be required to call
* mbedtls_cipher_init() on the structure first.
*/
int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx, const mbedtls_cipher_info_t *cipher_info );
int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx,
const mbedtls_cipher_info_t *cipher_info );
/**
* \brief This function returns the block size of the given cipher.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The size of the blocks of the cipher.
* \return 0 if \p ctx has not been initialized.
*/
static inline unsigned int mbedtls_cipher_get_block_size( const mbedtls_cipher_context_t *ctx )
static inline unsigned int mbedtls_cipher_get_block_size(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return 0;
@ -427,12 +435,13 @@ static inline unsigned int mbedtls_cipher_get_block_size( const mbedtls_cipher_c
* \brief This function returns the mode of operation for
* the cipher. For example, MBEDTLS_MODE_CBC.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The mode of operation.
* \return #MBEDTLS_MODE_NONE if \p ctx has not been initialized.
*/
static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode( const mbedtls_cipher_context_t *ctx )
static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return MBEDTLS_MODE_NONE;
@ -444,13 +453,14 @@ static inline mbedtls_cipher_mode_t mbedtls_cipher_get_cipher_mode( const mbedtl
* \brief This function returns the size of the IV or nonce
* of the cipher, in Bytes.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The recommended IV size if no IV has been set.
* \return \c 0 for ciphers not using an IV or a nonce.
* \return The actual size if an IV has been set.
*/
static inline int mbedtls_cipher_get_iv_size( const mbedtls_cipher_context_t *ctx )
static inline int mbedtls_cipher_get_iv_size(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return 0;
@ -464,12 +474,13 @@ static inline int mbedtls_cipher_get_iv_size( const mbedtls_cipher_context_t *ct
/**
* \brief This function returns the type of the given cipher.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The type of the cipher.
* \return #MBEDTLS_CIPHER_NONE if \p ctx has not been initialized.
*/
static inline mbedtls_cipher_type_t mbedtls_cipher_get_type( const mbedtls_cipher_context_t *ctx )
static inline mbedtls_cipher_type_t mbedtls_cipher_get_type(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return MBEDTLS_CIPHER_NONE;
@ -481,12 +492,13 @@ static inline mbedtls_cipher_type_t mbedtls_cipher_get_type( const mbedtls_ciphe
* \brief This function returns the name of the given cipher
* as a string.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The name of the cipher.
* \return NULL if \p ctx has not been not initialized.
*/
static inline const char *mbedtls_cipher_get_name( const mbedtls_cipher_context_t *ctx )
static inline const char *mbedtls_cipher_get_name(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return 0;
@ -497,13 +509,14 @@ static inline const char *mbedtls_cipher_get_name( const mbedtls_cipher_context_
/**
* \brief This function returns the key length of the cipher.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The key length of the cipher in bits.
* \return #MBEDTLS_KEY_LENGTH_NONE if ctx \p has not been
* initialized.
*/
static inline int mbedtls_cipher_get_key_bitlen( const mbedtls_cipher_context_t *ctx )
static inline int mbedtls_cipher_get_key_bitlen(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return MBEDTLS_KEY_LENGTH_NONE;
@ -514,12 +527,13 @@ static inline int mbedtls_cipher_get_key_bitlen( const mbedtls_cipher_context_t
/**
* \brief This function returns the operation of the given cipher.
*
* \param ctx The context of the cipher. Must be initialized.
* \param ctx The context of the cipher. This must be initialized.
*
* \return The type of operation: #MBEDTLS_ENCRYPT or #MBEDTLS_DECRYPT.
* \return #MBEDTLS_OPERATION_NONE if \p ctx has not been initialized.
*/
static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_cipher_context_t *ctx )
static inline mbedtls_operation_t mbedtls_cipher_get_operation(
const mbedtls_cipher_context_t *ctx )
{
if( NULL == ctx || NULL == ctx->cipher_info )
return MBEDTLS_OPERATION_NONE;
@ -530,11 +544,12 @@ static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_ci
/**
* \brief This function sets the key to use with the given context.
*
* \param ctx The generic cipher context. May not be NULL. Must have
* been initialized using mbedtls_cipher_info_from_type()
* or mbedtls_cipher_info_from_string().
* \param key The key to use.
* \param key_bitlen The key length to use, in bits.
* \param ctx The generic cipher context. This must be initialized
* using mbedtls_cipher_info_from_type() or
* mbedtls_cipher_info_from_string().
* \param key The key to use. This must be a readable buffer of at
* least \p key_bitlen Bits.
* \param key_bitlen The key length to use, in Bits.
* \param operation The operation that the key will be used for:
* #MBEDTLS_ENCRYPT or #MBEDTLS_DECRYPT.
*
@ -543,8 +558,10 @@ static inline mbedtls_operation_t mbedtls_cipher_get_operation( const mbedtls_ci
* parameter-verification failure.
* \return A cipher-specific error code on failure.
*/
int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *key,
int key_bitlen, const mbedtls_operation_t operation );
int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx,
const unsigned char *key,
int key_bitlen,
const mbedtls_operation_t operation );
#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
/**
@ -553,7 +570,7 @@ int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *k
*
* The default passing mode is PKCS7 padding.
*
* \param ctx The generic cipher context.
* \param ctx The generic cipher context. This must be initialized.
* \param mode The padding mode.
*
* \return \c 0 on success.
@ -562,7 +579,8 @@ int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *k
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA if the cipher mode
* does not support padding.
*/
int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_cipher_padding_t mode );
int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx,
mbedtls_cipher_padding_t mode );
#endif /* MBEDTLS_CIPHER_MODE_WITH_PADDING */
/**
@ -572,8 +590,9 @@ int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_ciph
* \note Some ciphers do not use IVs nor nonce. For these
* ciphers, this function has no effect.
*
* \param ctx The generic cipher context.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* \param ctx The generic cipher context. This must be initialized.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers. This
* must be a readable buffer of at least \p iv_len Bytes.
* \param iv_len The IV length for ciphers with variable-size IV.
* This parameter is discarded by ciphers with fixed-size IV.
*
@ -582,12 +601,13 @@ int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_ciph
* parameter-verification failure.
*/
int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len );
const unsigned char *iv,
size_t iv_len );
/**
* \brief This function resets the cipher state.
*
* \param ctx The generic cipher context.
* \param ctx The generic cipher context. This must be initialized.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
@ -599,10 +619,12 @@ int mbedtls_cipher_reset( mbedtls_cipher_context_t *ctx );
/**
* \brief This function adds additional data for AEAD ciphers.
* Currently supported with GCM and ChaCha20+Poly1305.
* Must be called exactly once, after mbedtls_cipher_reset().
* This must be called exactly once, after
* mbedtls_cipher_reset().
*
* \param ctx The generic cipher context.
* \param ad The additional data to use.
* \param ctx The generic cipher context. This must be initialized.
* \param ad The additional data to use. If `ad_len > 0`, then this
* must be a readable buffer of at least \p ad_len Bytes.
* \param ad_len the Length of \p ad.
*
* \return \c 0 on success.
@ -627,14 +649,16 @@ int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx,
* mbedtls_cipher_finish(), must have \p ilen as a
* multiple of the block size of the cipher.
*
* \param ctx The generic cipher context.
* \param input The buffer holding the input data.
* \param ctx The generic cipher context. This must be initialized.
* \param input The buffer holding the input data. This must be a
* readable buffer of at least \p ilen Bytes.
* \param ilen The length of the input data.
* \param output The buffer for the output data. Must be able to hold at
* least \p ilen + block_size. Must not be the same buffer
* as input.
* \param output The buffer for the output data. This must be able to
* hold at least \p ilen + block_size. This must not be the
* same buffer as \p input.
* \param olen The length of the output data, to be updated with the
* actual number of Bytes written.
* actual number of Bytes written. This must not be
* \c NULL.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
@ -652,9 +676,11 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i
* contained in it is padded to the size of
* the last block, and written to the \p output buffer.
*
* \param ctx The generic cipher context.
* \param output The buffer to write data to. Needs block_size available.
* \param ctx The generic cipher context. This must be initialized.
* \param output The buffer to write data to. This needs to be a writable
* buffer of at least \p block_size Bytes.
* \param olen The length of the data written to the \p output buffer.
* This may not be \c NULL.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA on
@ -672,10 +698,11 @@ int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx,
/**
* \brief This function writes a tag for AEAD ciphers.
* Currently supported with GCM and ChaCha20+Poly1305.
* Must be called after mbedtls_cipher_finish().
* This must be called after mbedtls_cipher_finish().
*
* \param ctx The generic cipher context.
* \param tag The buffer to write the tag to.
* \param ctx The generic cipher context. This must be initialized.
* \param tag The buffer to write the tag to. This must be a readable
* boffer of at least \p tag_len Bytes.
* \param tag_len The length of the tag to write.
*
* \return \c 0 on success.
@ -687,10 +714,11 @@ int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx,
/**
* \brief This function checks the tag for AEAD ciphers.
* Currently supported with GCM and ChaCha20+Poly1305.
* Must be called after mbedtls_cipher_finish().
* This must be called after mbedtls_cipher_finish().
*
* \param ctx The generic cipher context.
* \param tag The buffer holding the tag.
* \param ctx The generic cipher context. This must be initialized.
* \param tag The buffer holding the tag. This must be a readable
* buffer of at least \p tag_len Bytes.
* \param tag_len The length of the tag to check.
*
* \return \c 0 on success.
@ -704,18 +732,22 @@ int mbedtls_cipher_check_tag( mbedtls_cipher_context_t *ctx,
* \brief The generic all-in-one encryption/decryption function,
* for all ciphers except AEAD constructs.
*
* \param ctx The generic cipher context.
* \param ctx The generic cipher context. This must be initialized.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* If `iv_len > 0`, this must be a readable buffer of at
* least \p Bytes.
* \param iv_len The IV length for ciphers with variable-size IV.
* This parameter is discarded by ciphers with fixed-size
* IV.
* \param input The buffer holding the input data.
* \param input The buffer holding the input data. This must be a
* readable buffer of at least \p ilen Bytes.
* \param ilen The length of the input data.
* \param output The buffer for the output data. Must be able to hold at
* least \p ilen + block_size. Must not be the same buffer
* as input.
* \param output The buffer for the output data. This must be able to
* hold at least \p ilen + block_size. This must not be the
* same buffer as \p input.
* \param olen The length of the output data, to be updated with the
* actual number of Bytes written.
* actual number of Bytes written. This must not be
* \c NULL.
*
* \note Some ciphers do not use IVs nor nonce. For these
* ciphers, use \p iv = NULL and \p iv_len = 0.
@ -738,19 +770,26 @@ int mbedtls_cipher_crypt( mbedtls_cipher_context_t *ctx,
/**
* \brief The generic autenticated encryption (AEAD) function.
*
* \param ctx The generic cipher context.
* \param ctx The generic cipher context. This must be initialized.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* This must be a readable buffer of at least \p iv_len
* Bytes.
* \param iv_len The IV length for ciphers with variable-size IV.
* This parameter is discarded by ciphers with fixed-size IV.
* \param ad The additional data to authenticate.
* \param ad The additional data to authenticate. If `ad_len > 0`,
* this must be a readable buffer of at least \p ad_len
* Bytes.
* \param ad_len The length of \p ad.
* \param input The buffer holding the input data.
* \param input The buffer holding the input data. This must be a
* readable buffer of at least \p ilen Bytes.
* \param ilen The length of the input data.
* \param output The buffer for the output data.
* Must be able to hold at least \p ilen.
* \param output The buffer for the output data. This must be able to
* hold at least \p ilen.
* \param olen The length of the output data, to be updated with the
* actual number of Bytes written.
* \param tag The buffer for the authentication tag.
* actual number of Bytes written. This must not be
* \c NULL.
* \param tag The buffer for the authentication tag. This must be a
* writable buffer of at least \p tag_len Bytes.
* \param tag_len The desired length of the authentication tag.
*
* \return \c 0 on success.
@ -772,19 +811,26 @@ int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx,
* is zeroed out to prevent the unauthentic plaintext being
* used, making this interface safer.
*
* \param ctx The generic cipher context.
* \param ctx The generic cipher context. This must be initialized.
* \param iv The IV to use, or NONCE_COUNTER for CTR-mode ciphers.
* This must be a readable buffer of at least \p iv_len
* Bytes.
* \param iv_len The IV length for ciphers with variable-size IV.
* This parameter is discarded by ciphers with fixed-size IV.
* \param ad The additional data to be authenticated.
* \param ad The additional data to be authenticated. If `ad_len > 0`,
* this must be a readable buffer of at least \p ad_len
* Bytes.
* \param ad_len The length of \p ad.
* \param input The buffer holding the input data.
* \param input The buffer holding the input data. This must be a
* readable buffer of at least \p ilen Bytes.
* \param ilen The length of the input data.
* \param output The buffer for the output data.
* Must be able to hold at least \p ilen.
* This must be able to hold at least \p ilen Bytes.
* \param olen The length of the output data, to be updated with the
* actual number of Bytes written.
* \param tag The buffer holding the authentication tag.
* actual number of Bytes written. This must not be
* \c NULL.
* \param tag The buffer holding the authentication tag. This must be
* a readable buffer of at least \p tag_len Bytes.
* \param tag_len The length of the authentication tag.
*
* \return \c 0 on success.

74
library/cipher.c
View File

@ -65,6 +65,11 @@
#define mbedtls_free free
#endif
#define CIPHER_VALIDATE_RET( cond ) \
MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA )
#define CIPHER_VALIDATE( cond ) \
MBEDTLS_INTERNAL_VALIDATE( cond )
#if defined(MBEDTLS_GCM_C) || defined(MBEDTLS_CHACHAPOLY_C)
/* Compare the contents of two buffers in constant time.
* Returns 0 if the contents are bitwise identical, otherwise returns
@ -150,6 +155,7 @@ const mbedtls_cipher_info_t *mbedtls_cipher_info_from_values( const mbedtls_ciph
void mbedtls_cipher_init( mbedtls_cipher_context_t *ctx )
{
CIPHER_VALIDATE( ctx != NULL );
memset( ctx, 0, sizeof( mbedtls_cipher_context_t ) );
}
@ -199,9 +205,14 @@ int mbedtls_cipher_setup( mbedtls_cipher_context_t *ctx, const mbedtls_cipher_in
return( 0 );
}
int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *key,
int key_bitlen, const mbedtls_operation_t operation )
int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx,
const unsigned char *key,
int key_bitlen,
const mbedtls_operation_t operation )
{
CIPHER_VALIDATE_RET( operation == MBEDTLS_ENCRYPT ||
operation == MBEDTLS_DECRYPT );
if( NULL == ctx || NULL == ctx->cipher_info )
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
@ -234,9 +245,11 @@ int mbedtls_cipher_setkey( mbedtls_cipher_context_t *ctx, const unsigned char *k
}
int mbedtls_cipher_set_iv( mbedtls_cipher_context_t *ctx,
const unsigned char *iv, size_t iv_len )
const unsigned char *iv,
size_t iv_len )
{
size_t actual_iv_size;
if( NULL == ctx || NULL == ctx->cipher_info )
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
else if( NULL == iv && iv_len != 0 )
@ -295,6 +308,8 @@ int mbedtls_cipher_reset( mbedtls_cipher_context_t *ctx )
int mbedtls_cipher_update_ad( mbedtls_cipher_context_t *ctx,
const unsigned char *ad, size_t ad_len )
{
CIPHER_VALIDATE_RET( ad_len == 0 || ad != NULL );
if( NULL == ctx || NULL == ctx->cipher_info )
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
@ -335,9 +350,13 @@ int mbedtls_cipher_update( mbedtls_cipher_context_t *ctx, const unsigned char *i
size_t ilen, unsigned char *output, size_t *olen )
{
int ret;
size_t block_size = 0;
size_t block_size;
if( NULL == ctx || NULL == ctx->cipher_info || NULL == olen )
CIPHER_VALIDATE_RET( input != NULL );
CIPHER_VALIDATE_RET( output != NULL );
CIPHER_VALIDATE_RET( olen != NULL );
if( NULL == ctx || NULL == ctx->cipher_info )
{
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
}
@ -745,7 +764,10 @@ static int get_no_padding( unsigned char *input, size_t input_len,
int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx,
unsigned char *output, size_t *olen )
{
if( NULL == ctx || NULL == ctx->cipher_info || NULL == olen )
CIPHER_VALIDATE_RET( output != NULL );
CIPHER_VALIDATE_RET( olen != NULL );
if( NULL == ctx || NULL == ctx->cipher_info )
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
*olen = 0;
@ -830,10 +852,13 @@ int mbedtls_cipher_finish( mbedtls_cipher_context_t *ctx,
}
#if defined(MBEDTLS_CIPHER_MODE_WITH_PADDING)
int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_cipher_padding_t mode )
int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx,
mbedtls_cipher_padding_t mode )
{
if( NULL == ctx ||
MBEDTLS_MODE_CBC != ctx->cipher_info->mode )
CIPHER_VALIDATE_RET( ctx != NULL );
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
if( MBEDTLS_MODE_CBC != ctx->cipher_info->mode )
{
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
}
@ -881,7 +906,9 @@ int mbedtls_cipher_set_padding_mode( mbedtls_cipher_context_t *ctx, mbedtls_ciph
int mbedtls_cipher_write_tag( mbedtls_cipher_context_t *ctx,
unsigned char *tag, size_t tag_len )
{
if( NULL == ctx || NULL == ctx->cipher_info || NULL == tag )
CIPHER_VALIDATE_RET( tag != NULL );
if( NULL == ctx || NULL == ctx->cipher_info )
return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
if( MBEDTLS_ENCRYPT != ctx->operation )
@ -913,6 +940,8 @@ int mbedtls_cipher_check_tag( mbedtls_cipher_context_t *ctx,
unsigned char check_tag[16];
int ret;
CIPHER_VALIDATE_RET( tag != NULL );
if( NULL == ctx || NULL == ctx->cipher_info ||
MBEDTLS_DECRYPT != ctx->operation )
{
@ -976,6 +1005,13 @@ int mbedtls_cipher_crypt( mbedtls_cipher_context_t *ctx,
int ret;
size_t finish_olen;
CIPHER_VALIDATE_RET( ctx != NULL );
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( iv_len == 0 || iv != NULL );
CIPHER_VALIDATE_RET( input != NULL );
CIPHER_VALIDATE_RET( output != NULL );
CIPHER_VALIDATE_RET( olen != NULL );
if( ( ret = mbedtls_cipher_set_iv( ctx, iv, iv_len ) ) != 0 )
return( ret );
@ -1004,6 +1040,15 @@ int mbedtls_cipher_auth_encrypt( mbedtls_cipher_context_t *ctx,
unsigned char *output, size_t *olen,
unsigned char *tag, size_t tag_len )
{
CIPHER_VALIDATE_RET( ctx != NULL );
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( iv != NULL );
CIPHER_VALIDATE_RET( ad_len == 0 || ad != NULL );
CIPHER_VALIDATE_RET( input != NULL );
CIPHER_VALIDATE_RET( output != NULL );
CIPHER_VALIDATE_RET( olen != NULL );
CIPHER_VALIDATE_RET( tag != NULL );
#if defined(MBEDTLS_GCM_C)
if( MBEDTLS_MODE_GCM == ctx->cipher_info->mode )
{
@ -1051,6 +1096,15 @@ int mbedtls_cipher_auth_decrypt( mbedtls_cipher_context_t *ctx,
unsigned char *output, size_t *olen,
const unsigned char *tag, size_t tag_len )
{
CIPHER_VALIDATE_RET( ctx != NULL );
CIPHER_VALIDATE_RET( ctx->cipher_info != NULL );
CIPHER_VALIDATE_RET( iv != NULL );
CIPHER_VALIDATE_RET( ad_len == 0 || ad != NULL );
CIPHER_VALIDATE_RET( input != NULL );
CIPHER_VALIDATE_RET( output != NULL );
CIPHER_VALIDATE_RET( olen != NULL );
CIPHER_VALIDATE_RET( tag != NULL );
#if defined(MBEDTLS_GCM_C)
if( MBEDTLS_MODE_GCM == ctx->cipher_info->mode )
{

1
tests/CMakeLists.txt
View File

@ -72,6 +72,7 @@ add_test_suite(cipher cipher.chacha20)
add_test_suite(cipher cipher.chachapoly)
add_test_suite(cipher cipher.des)
add_test_suite(cipher cipher.gcm)
add_test_suite(cipher cipher.misc)
add_test_suite(cipher cipher.null)
add_test_suite(cipher cipher.padding)
add_test_suite(cmac)

258
tests/suites/test_suite_cipher.function
View File

@ -91,6 +91,264 @@ void cipher_null_args( )
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_CHECK_PARAMS:!MBEDTLS_PARAM_FAILED_ALT */
void cipher_invalid_param( )
{
mbedtls_cipher_context_t invalid_ctx;
mbedtls_cipher_context_t valid_ctx;
mbedtls_operation_t invalid_operation = 100;
mbedtls_cipher_padding_t valid_mode = MBEDTLS_PADDING_ZEROS;
unsigned char valid_buffer[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
int valid_size = sizeof(valid_buffer);
int valid_bitlen = valid_size * 8;
size_t size_t_var;
/* mbedtls_cipher_init() */
TEST_VALID_PARAM( mbedtls_cipher_init( &invalid_ctx ) );
TEST_VALID_PARAM( mbedtls_cipher_init( &valid_ctx ) );
TEST_INVALID_PARAM( mbedtls_cipher_init( NULL ) );
/* mbedtls_cipher_setkey() */
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_setkey( &valid_ctx,
valid_buffer,
valid_bitlen,
invalid_operation ) );
/* mbedtls_cipher_set_padding_mode() */
TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_set_padding_mode( NULL, valid_mode ) );
TEST_INVALID_PARAM_RET( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_set_padding_mode( &invalid_ctx,
valid_mode ) );
/* mbedtls_cipher_update() */
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_update( &valid_ctx,
NULL, valid_size,
valid_buffer,
&size_t_var ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_update( &valid_ctx,
valid_buffer, valid_size,
NULL,
&size_t_var ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_update( &valid_ctx,
valid_buffer, valid_size,
valid_buffer,
NULL ) );
/* mbedtls_cipher_finish() */
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_finish( &valid_ctx,
NULL,
&size_t_var ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_finish( &valid_ctx,
valid_buffer,
NULL ) );
/* mbedtls_cipher_write_tag() */
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_write_tag( &valid_ctx,
NULL,
valid_size ) );
/* mbedtls_cipher_check_tag() */
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_check_tag( &valid_ctx,
NULL,
valid_size ) );
/* mbedtls_cipher_crypt() */
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_crypt( NULL,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_crypt( &invalid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_crypt( &valid_ctx,
NULL, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_crypt( &valid_ctx,
valid_buffer, valid_size,
NULL, valid_size,
valid_buffer, &size_t_var ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_crypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
NULL, &size_t_var ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_crypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, NULL ) );
/* mbedtls_cipher_auth_encrypt() */
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_encrypt( NULL,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_encrypt( &invalid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_encrypt( &valid_ctx,
NULL, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_encrypt( &valid_ctx,
valid_buffer, valid_size,
NULL, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_encrypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
NULL, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_encrypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
NULL, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_encrypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, NULL,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_encrypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
NULL, valid_size ) );
/* mbedtls_cipher_auth_decrypt() */
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_decrypt( NULL,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_decrypt( &invalid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_decrypt( &valid_ctx,
NULL, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_decrypt( &valid_ctx,
valid_buffer, valid_size,
NULL, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_decrypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
NULL, valid_size,
valid_buffer, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_decrypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
NULL, &size_t_var,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_decrypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, NULL,
valid_buffer, valid_size ) );
TEST_INVALID_PARAM_RET(
MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,
mbedtls_cipher_auth_decrypt( &valid_ctx,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, valid_size,
valid_buffer, &size_t_var,
NULL, valid_size ) );
/* mbedtls_cipher_free() */
TEST_VALID_PARAM( mbedtls_cipher_free( NULL ) );
exit:
TEST_VALID_PARAM( mbedtls_cipher_free( &invalid_ctx ) );
TEST_VALID_PARAM( mbedtls_cipher_free( &valid_ctx ) );
}
/* END_CASE */
/* BEGIN_CASE depends_on:MBEDTLS_AES_C */
void cipher_special_behaviours( )
{

2
tests/suites/test_suite_cipher.misc.data Normal file
View File

@ -0,0 +1,2 @@
CIPHER - Invalid parameters
cipher_invalid_param: