Provides cryptographic hash related functionality through nrf_crypto. More...

Macros
#define	NRF_CRYPTO_HASH_SIZE(type) STRING_CONCATENATE(NRF_CRYPTO_HASH_SIZE_, type)
	Internal macro to get the size of a given hash type. More...

#define	NRF_CRYPTO_HASH_CONTEXT_CREATE(name, type)
	Macro to create an instance of a hash context by a given name and type. More...

#define	NRF_CRYPTO_HASH_CREATE(name, type)
	Macro to create an instance of a hash by a given name and type. More...

#define	NRF_CRYPTO_HASH_CREATE_FROM_ARRAY(name, type, input)
	Macro to create an instance of a hash by a given name and type and input buffer. More...

Functions
uint32_t	nrf_crypto_hash_size_get (nrf_hash_type_t hash_type, uint32_t *p_hash_size)
	Function to get the size of a given hash type. More...

uint32_t	nrf_crypto_hash_context_allocate (nrf_crypto_hash_info_t hash_info, nrf_value_length_t *p_hash_context)
	Function to dynamically allocate memory to hold a hash context used when calculating hash as a non-integrated step. More...

uint32_t	nrf_crypto_hash_context_free (nrf_value_length_t *p_hash_context)
	Function to free dynamically allocated memory for hash context used when calculating hash as a non-integrated step. More...

uint32_t	nrf_crypto_hash_allocate (nrf_crypto_hash_info_t hash_info, nrf_value_length_t p_hash, nrf_value_length_t const p_raw_hash)
	Function to dynamically allocate memory to hold a hash value. More...

uint32_t	nrf_crypto_hash_free (nrf_value_length_t *p_hash)
	Function to free dynamically allocated memory for a hash value. More...

uint32_t	nrf_crypto_hash_init (nrf_crypto_hash_info_t hash_info, nrf_value_length_t *p_hash_context)
	Function for computing a hash from arbitrary data. More...

uint32_t	nrf_crypto_hash_update (nrf_value_length_t p_hash_context, uint8_t const p_data, uint32_t len)
	Function for computing a hash or a digest from arbitrary data. More...

uint32_t	nrf_crypto_hash_finalize (nrf_crypto_hash_info_t hash_info, nrf_value_length_t p_hash_context, nrf_value_length_t p_hash)
	Function for computing a hash from arbitrary data. More...

uint32_t	nrf_crypto_hash_compute (nrf_crypto_hash_info_t hash_info, uint8_t const p_data, uint32_t len, nrf_value_length_t p_hash)
	Function for computing a hash from arbitrary data in a single integrated step. More...

Detailed Description

Provides cryptographic hash related functionality through nrf_crypto.

Macro Definition Documentation

#define NRF_CRYPTO_HASH_CONTEXT_CREATE	(	name,
		type
	)

Value:

__ALIGN(4) static uint8_t name ## _buffer[NRF_CRYPTO_HASH_CONTEXT_MAX_SIZE]; \
static nrf_value_length_t name = \
{ \
 .p_value = name ## _buffer, \
 .length = NRF_CRYPTO_HASH_CONTEXT_MAX_SIZE \
}

Macro to create an instance of a hash context by a given name and type.

Note: This creates the value length structure and a backing buffer without using dynamically allocated memory.

#define NRF_CRYPTO_HASH_CREATE	(	name,
		type
	)

Value:

__ALIGN(4) static uint8_t name ## _buffer[NRF_CRYPTO_HASH_SIZE(type)]; \
static nrf_value_length_t name = \
{ \
 .p_value = name ## _buffer, \
 .length = NRF_CRYPTO_HASH_SIZE(type) \
}

Macro to create an instance of a hash by a given name and type.

Parameters

[in]	name	Name of the hash instance.
[in]	type	Either MD5, SHA0, SHA1, SHA224, SHA256, SHA384 or SHA512.

Note: This creates the value length structure and a backing buffer without using dynamically allocated memory.

#define NRF_CRYPTO_HASH_CREATE_FROM_ARRAY	(	name,
		type,
		input
	)

Value:

STATIC_ASSERT(sizeof(input) == NRF_CRYPTO_HASH_SIZE(type)) \
static nrf_value_length_t name = \
{ \
 .p_value = (uint8_t*) input, \
 .length = NRF_CRYPTO_HASH_SIZE(type) \
}

Macro to create an instance of a hash by a given name and type and input buffer.

If the input is not of the correct size a static assert will be occur compile-time.

Parameters

[in]	name	Name of the hash instance.
[in]	type	Either MD5, SHA0, SHA1, SHA224, SHA256, SHA384 or SHA512.
[in]	input	Array used as input buffer.

Note: This creates the value length structure and a backing buffer without using dynamically allocated memory.

#define NRF_CRYPTO_HASH_SIZE ( type ) STRING_CONCATENATE(NRF_CRYPTO_HASH_SIZE_, type)

Internal macro to get the size of a given hash type.

Parameters

[in] type Either MD5, SHA0, SHA1, SHA224, SHA256, SHA384 or SHA512

Function Documentation

uint32_t nrf_crypto_hash_allocate	(	nrf_crypto_hash_info_t	hash_info,
		nrf_value_length_t *	p_hash,
		nrf_value_length_t const *	p_raw_hash
	)

Function to dynamically allocate memory to hold a hash value.

Parameters

[in]	hash_info	Structure holding info about hash algorithm to use and endianness for the computed hash.
[in,out]	p_hash	Pointer to value-length structure to hold allocated space.
[in]	p_raw_hash	Pointer to value length structure to hold raw representation of hash.

Return values

NRF_SUCCESS Space was successfully alloacted.

uint32_t nrf_crypto_hash_compute	(	nrf_crypto_hash_info_t	hash_info,
		uint8_t const *	p_data,
		uint32_t	len,
		nrf_value_length_t *	p_hash
	)

Function for computing a hash from arbitrary data in a single integrated step.

Parameters

[in]	hash_info	Structure holding info about hash algorithm to use and endianness for the computed hash.
[in]	p_data	Pointer to data to be hashed.
[in]	len	Length of the data to be hashed.
[in,out]	p_hash	Pointer to structure holding the calculated hash.

Return values

NRF_SUCCESS	If the hash was computed successfully.
NRF_ERROR_INVALID_STATE	If the function was called when nrf_crypto was uninitialized.
NRF_ERROR_NOT_SUPPORTED	If the selected hash algorithm is not supported.
NRF_ERROR_INVALID_ADDR	If any of the provided pointers are invalid.
NRF_ERROR_INVALID_LENGTH	If the hash is bigger than the size of the provided buffer or the size of the hash context is invalid.
NRF_ERROR_INVALID_DATA	If the hash context was deemed invalid by the nrf_crypto backend.
NRF_ERROR_INTERNAL	If an internal error occured in the nrf_crypto backend.

uint32_t nrf_crypto_hash_context_allocate	(	nrf_crypto_hash_info_t	hash_info,
		nrf_value_length_t *	p_hash_context
	)

Function to dynamically allocate memory to hold a hash context used when calculating hash as a non-integrated step.

Parameters

[in]	hash_info	Hashing algorithm to create context for
[in,out]	p_hash_context	Pointer to value-length structure to hold allocated space.

Return values

NRF_SUCCESS Space was successfully allocated.

uint32_t nrf_crypto_hash_context_free ( nrf_value_length_t * p_hash_context )

Function to free dynamically allocated memory for hash context used when calculating hash as a non-integrated step.

Note: The length value of the value length structure will be set to zero when the memory is freed. There is no impact of running this function on already deallocated memory.

Parameters

[in,out] p_hash_context Pointer a to value-length structure that holds the allocated space to be freed.

Return values

NRF_SUCCESS Space was successfully freed.

uint32_t nrf_crypto_hash_finalize	(	nrf_crypto_hash_info_t	hash_info,
		nrf_value_length_t *	p_hash_context,
		nrf_value_length_t *	p_hash
	)

Function for computing a hash from arbitrary data.

Note: The context object is assumed to be an opaque type defined by the nrf_crypto backend. See NRF_CRYPTO_HASH_CONTEXT_SIZE for the relevant nrf_crypto backend.

Parameters

[in]	hash_info	Structure holding info about hash algorithm to use.
[in,out]	p_hash_context	Pointer to structure holding context information for the hash computation.
[in,out]	p_hash	Pointer to structure holding the calculated hash.

Return values

NRF_SUCCESS	If the hash was computed successfully.
NRF_ERROR_INVALID_STATE	If the function was called when nrf_crypto was uninitialized.
NRF_ERROR_NULL	If the any of the parameters was NULL.
NRF_ERROR_NOT_SUPPORTED	If the selected hash algorithm is not supported.
NRF_ERROR_INVALID_ADDR	If any of the provided pointers are invalid.
NRF_ERROR_INVALID_LENGTH	If the hash is bigger than the size of the provided buffer or the size of the hash context is invalid.
NRF_ERROR_INVALID_DATA	If the hash context was deemed invalid by the nrf_crypto backend.
NRF_ERROR_INTERNAL	If an internal error occured in the nrf_crypto backend.

uint32_t nrf_crypto_hash_free ( nrf_value_length_t * p_hash )

Function to free dynamically allocated memory for a hash value.

Note: The length value of the value length structure will be set to zero when the memory is freed. There is no impact of running this function on already deallocated memory.

Parameters

[in,out] p_hash Pointer to a value-length structure that holds the allocated space to be freed.

Return values

NRF_SUCCESS Space was successfully freed.

uint32_t nrf_crypto_hash_init	(	nrf_crypto_hash_info_t	hash_info,
		nrf_value_length_t *	p_hash_context
	)

Function for computing a hash from arbitrary data.

Note: The context object is assumed to be an opaque type defined by the nrf_crypto backend. See NRF_CRYPTO_HASH_CONTEXT_SIZE for the relevant nrf_crypto backend.

Parameters

[in]	hash_info	Structure holding info about hash algorithm to use and endianness for the computed hash.
[in,out]	p_hash_context	Pointer to structure holding context information for the hash computation.

Return values

NRF_SUCCESS	If the hash initialization was successful.
NRF_ERROR_INVALID_STATE	If the function was called when nrf_crypto was uninitialized.
NRF_ERROR_NULL	If the hash context parameter was NULL.
NRF_ERROR_NOT_SUPPORTED	If the selected hash algorithm is not supported.
NRF_ERROR_INVALID_ADDR	If any of the provided pointers are invalid.
NRF_ERROR_INVALID_LENGTH	If the hash is bigger than the size of the provided buffer.
NRF_ERROR_INVALID_DATA	If the hash context was deemed invalid by the nrf_crypto backend.
NRF_ERROR_INTERNAL	If an internal error occured in the nrf_crypto backend.

uint32_t nrf_crypto_hash_size_get	(	nrf_hash_type_t	hash_type,
		uint32_t *	p_hash_size
	)

Function to get the size of a given hash type.

Parameters

[in]	hash_type	Type of hash.
[in,out]	p_hash_size	Pointer to variable to hold the hash size. Must not be NULL.

Return values

NRF_SUCCESS	Hash function found.
NRF_ERROR_NULL	p_hash_size was NULL.
NRF_ERROR_NOT_SUPPORTED	Requested hash type isn't supported.

uint32_t nrf_crypto_hash_update	(	nrf_value_length_t *	p_hash_context,
		uint8_t const *	p_data,
		uint32_t	len
	)

Function for computing a hash or a digest from arbitrary data.

Note: The context object is assumed to be an opaque type defined by the nrf_crypto backend. See NRF_CRYPTO_HASH_CONTEXT_SIZE for the relevant nrf_crypto backend.

Parameters

[in,out]	p_hash_context	Pointer to structure holding context information for the hash computation.
[in]	p_data	Pointer to data to be hashed.
[in]	len	Length of the data to be hashed.

Return values

NRF_SUCCESS	If the hash was computed successfully.
NRF_ERROR_NULL	If the hash context parameter was NULL.
NRF_ERROR_INVALID_STATE	If the function was called when nrf_crypto was uninitialized.
NRF_ERROR_NOT_SUPPORTED	If the selected hash algorithm is not supported.
NRF_ERROR_INVALID_ADDR	If any of the provided pointers are invalid.
NRF_ERROR_INVALID_LENGTH	If the size of the hash context is invalid.
NRF_ERROR_INVALID_DATA	If the hash context was deemed invalid by the nrf_crypto backend.
NRF_ERROR_INTERNAL	If an internal error occured in the nrf_crypto backend.

Macros

Functions

Detailed Description

Macro Definition Documentation

Function Documentation