CRYP driver modules. More...

Collaboration diagram for CRYP:

Modules
	CRYP_Exported_Constants

	CRYP_Private_Functions

Data Structures
struct	CRYP_InitTypeDef
	CRYP Init structure definition. More...

struct	CRYP_KeyInitTypeDef
	CRYP Key(s) structure definition. More...

struct	CRYP_IVInitTypeDef
	CRYP Initialization Vectors (IV) structure definition. More...

struct	CRYP_Context
	CRYP context swapping structure definition. More...

Macros
#define	FLAG_MASK ((uint8_t)0x20)

#define	MAX_TIMEOUT ((uint16_t)0xFFFF)

#define	AESBUSY_TIMEOUT ((uint32_t) 0x00010000)

#define	DESBUSY_TIMEOUT ((uint32_t) 0x00010000)

#define	TDESBUSY_TIMEOUT ((uint32_t) 0x00010000)

Functions
void	CRYP_DeInit (void)
	Deinitializes the CRYP peripheral registers to their default reset values. More...

void	CRYP_Init (CRYP_InitTypeDef *CRYP_InitStruct)
	Initializes the CRYP peripheral according to the specified parameters in the CRYP_InitStruct. More...

void	CRYP_StructInit (CRYP_InitTypeDef *CRYP_InitStruct)
	Fills each CRYP_InitStruct member with its default value. More...

void	CRYP_KeyInit (CRYP_KeyInitTypeDef *CRYP_KeyInitStruct)
	Initializes the CRYP Keys according to the specified parameters in the CRYP_KeyInitStruct. More...

void	CRYP_KeyStructInit (CRYP_KeyInitTypeDef *CRYP_KeyInitStruct)
	Fills each CRYP_KeyInitStruct member with its default value. More...

void	CRYP_IVInit (CRYP_IVInitTypeDef *CRYP_IVInitStruct)
	Initializes the CRYP Initialization Vectors(IV) according to the specified parameters in the CRYP_IVInitStruct. More...

void	CRYP_IVStructInit (CRYP_IVInitTypeDef *CRYP_IVInitStruct)
	Fills each CRYP_IVInitStruct member with its default value. More...

void	CRYP_Cmd (FunctionalState NewState)
	Enables or disables the CRYP peripheral. More...

void	CRYP_PhaseConfig (uint32_t CRYP_Phase)
	Configures the AES-CCM and AES-GCM phases. More...

void	CRYP_FIFOFlush (void)
	Flushes the IN and OUT FIFOs (that is read and write pointers of the FIFOs are reset) More...

void	CRYP_DataIn (uint32_t Data)
	Writes data in the Data Input register (DIN). More...

uint32_t	CRYP_DataOut (void)
	Returns the last data entered into the output FIFO. More...

ErrorStatus	CRYP_SaveContext (CRYP_Context CRYP_ContextSave, CRYP_KeyInitTypeDef CRYP_KeyInitStruct)
	Saves the CRYP peripheral Context. More...

void	CRYP_RestoreContext (CRYP_Context *CRYP_ContextRestore)
	Restores the CRYP peripheral Context. More...

void	CRYP_DMACmd (uint8_t CRYP_DMAReq, FunctionalState NewState)
	Enables or disables the CRYP DMA interface. More...

void	CRYP_ITConfig (uint8_t CRYP_IT, FunctionalState NewState)
	Enables or disables the specified CRYP interrupts. More...

ITStatus	CRYP_GetITStatus (uint8_t CRYP_IT)
	Checks whether the specified CRYP interrupt has occurred or not. More...

FunctionalState	CRYP_GetCmdStatus (void)
	Returns whether CRYP peripheral is enabled or disabled. More...

FlagStatus	CRYP_GetFlagStatus (uint8_t CRYP_FLAG)
	Checks whether the specified CRYP flag is set or not. More...

ErrorStatus	CRYP_AES_ECB (uint8_t Mode, uint8_t Key, uint16_t Keysize, uint8_t Input, uint32_t Ilength, uint8_t *Output)
	Encrypt and decrypt using AES in ECB Mode. More...

ErrorStatus	CRYP_AES_CBC (uint8_t Mode, uint8_t InitVectors[16], uint8_t Key, uint16_t Keysize, uint8_t Input, uint32_t Ilength, uint8_t *Output)
	Encrypt and decrypt using AES in CBC Mode. More...

ErrorStatus	CRYP_AES_CTR (uint8_t Mode, uint8_t InitVectors[16], uint8_t Key, uint16_t Keysize, uint8_t Input, uint32_t Ilength, uint8_t *Output)
	Encrypt and decrypt using AES in CTR Mode. More...

ErrorStatus	CRYP_AES_GCM (uint8_t Mode, uint8_t InitVectors[16], uint8_t Key, uint16_t Keysize, uint8_t Input, uint32_t ILength, uint8_t Header, uint32_t HLength, uint8_t Output, uint8_t *AuthTAG)
	Encrypt and decrypt using AES in GCM Mode. The GCM and CCM modes are available only on STM32F437x Devices. More...

ErrorStatus	CRYP_AES_CCM (uint8_t Mode, uint8_t Nonce, uint32_t NonceSize, uint8_t Key, uint16_t Keysize, uint8_t Input, uint32_t ILength, uint8_t Header, uint32_t HLength, uint8_t HBuffer, uint8_t Output, uint8_t *AuthTAG, uint32_t TAGSize)
	Encrypt and decrypt using AES in CCM Mode. The GCM and CCM modes are available only on STM32F437x Devices. More...

ErrorStatus	CRYP_TDES_ECB (uint8_t Mode, uint8_t Key[24], uint8_t Input, uint32_t Ilength, uint8_t Output)
	Encrypt and decrypt using TDES in ECB Mode. More...

ErrorStatus	CRYP_TDES_CBC (uint8_t Mode, uint8_t Key[24], uint8_t InitVectors[8], uint8_t Input, uint32_t Ilength, uint8_t Output)
	Encrypt and decrypt using TDES in CBC Mode. More...

ErrorStatus	CRYP_DES_ECB (uint8_t Mode, uint8_t Key[8], uint8_t Input, uint32_t Ilength, uint8_t Output)
	Encrypt and decrypt using DES in ECB Mode. More...

ErrorStatus	CRYP_DES_CBC (uint8_t Mode, uint8_t Key[8], uint8_t InitVectors[8], uint8_t Input, uint32_t Ilength, uint8_t Output)
	Encrypt and decrypt using DES in CBC Mode. More...

Detailed Description

CRYP driver modules.

Function Documentation

ErrorStatus CRYP_AES_CBC	(	uint8_t	Mode,
		uint8_t	InitVectors[16],
		uint8_t *	Key,
		uint16_t	Keysize,
		uint8_t *	Input,
		uint32_t	Ilength,
		uint8_t *	Output
	)

Encrypt and decrypt using AES in CBC Mode.

Parameters

Mode	encryption or decryption Mode. This parameter can be one of the following values: MODE_ENCRYPT: Encryption MODE_DECRYPT: Decryption
InitVectors	Initialisation Vectors used for AES algorithm.
Key	Key used for AES algorithm.
Keysize	length of the Key, must be a 128, 192 or 256.
Input	pointer to the Input buffer.
Ilength	length of the Input buffer, must be a multiple of 16.
Output	pointer to the returned buffer.

Return values

An	ErrorStatus enumeration value: SUCCESS: Operation done ERROR: Operation failed

Definition at line 294 of file stm32f4xx_cryp_aes.c.

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ErrorStatus CRYP_AES_CCM	(	uint8_t	Mode,
		uint8_t *	Nonce,
		uint32_t	NonceSize,
		uint8_t *	Key,
		uint16_t	Keysize,
		uint8_t *	Input,
		uint32_t	ILength,
		uint8_t *	Header,
		uint32_t	HLength,
		uint8_t *	HBuffer,
		uint8_t *	Output,
		uint8_t *	AuthTAG,
		uint32_t	TAGSize
	)

Encrypt and decrypt using AES in CCM Mode. The GCM and CCM modes are available only on STM32F437x Devices.

Parameters

Mode	encryption or decryption Mode. This parameter can be one of the following values: MODE_ENCRYPT: Encryption MODE_DECRYPT: Decryption
Nonce	the nounce used for AES algorithm. It shall be unique for each processing.
Key	Key used for AES algorithm.
Keysize	length of the Key, must be a 128, 192 or 256.
Input	pointer to the Input buffer.
Ilength	length of the Input buffer in bytes, must be a multiple of 16.
Header	pointer to the header buffer.
Hlength	length of the header buffer in bytes.
HBuffer	pointer to temporary buffer used to append the header HBuffer size must be equal to Hlength + 21
Output	pointer to the returned buffer.
AuthTAG	pointer to the authentication TAG buffer.
TAGSize	the size of the TAG (called also MAC).

Return values

An	ErrorStatus enumeration value: SUCCESS: Operation done ERROR: Operation failed

Definition at line 1135 of file stm32f4xx_cryp_aes.c.

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ErrorStatus CRYP_AES_CTR	(	uint8_t	Mode,
		uint8_t	InitVectors[16],
		uint8_t *	Key,
		uint16_t	Keysize,
		uint8_t *	Input,
		uint32_t	Ilength,
		uint8_t *	Output
	)

Encrypt and decrypt using AES in CTR Mode.

Parameters

Mode	encryption or decryption Mode. This parameter can be one of the following values: MODE_ENCRYPT: Encryption MODE_DECRYPT: Decryption
InitVectors	Initialisation Vectors used for AES algorithm.
Key	Key used for AES algorithm.
Keysize	length of the Key, must be a 128, 192 or 256.
Input	pointer to the Input buffer.
Ilength	length of the Input buffer, must be a multiple of 16.
Output	pointer to the returned buffer.

Return values

An	ErrorStatus enumeration value: SUCCESS: Operation done ERROR: Operation failed

Definition at line 496 of file stm32f4xx_cryp_aes.c.

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ErrorStatus CRYP_AES_ECB	(	uint8_t	Mode,
		uint8_t *	Key,
		uint16_t	Keysize,
		uint8_t *	Input,
		uint32_t	Ilength,
		uint8_t *	Output
	)

Encrypt and decrypt using AES in ECB Mode.

Parameters

Mode	encryption or decryption Mode. This parameter can be one of the following values: MODE_ENCRYPT: Encryption MODE_DECRYPT: Decryption
Key	Key used for AES algorithm.
Keysize	length of the Key, must be a 128, 192 or 256.
Input	pointer to the Input buffer.
Ilength	length of the Input buffer, must be a multiple of 16.
Output	pointer to the returned buffer.

Return values

An	ErrorStatus enumeration value: SUCCESS: Operation done ERROR: Operation failed

Definition at line 106 of file stm32f4xx_cryp_aes.c.

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ErrorStatus CRYP_AES_GCM	(	uint8_t	Mode,
		uint8_t	InitVectors[16],
		uint8_t *	Key,
		uint16_t	Keysize,
		uint8_t *	Input,
		uint32_t	ILength,
		uint8_t *	Header,
		uint32_t	HLength,
		uint8_t *	Output,
		uint8_t *	AuthTAG
	)

Encrypt and decrypt using AES in GCM Mode. The GCM and CCM modes are available only on STM32F437x Devices.

Parameters

Mode	encryption or decryption Mode. This parameter can be one of the following values: MODE_ENCRYPT: Encryption MODE_DECRYPT: Decryption
InitVectors	Initialisation Vectors used for AES algorithm.
Key	Key used for AES algorithm.
Keysize	length of the Key, must be a 128, 192 or 256.
Input	pointer to the Input buffer.
Ilength	length of the Input buffer in bytes, must be a multiple of 16.
Header	pointer to the header buffer.
Hlength	length of the header buffer in bytes, must be a multiple of 16.
Output	pointer to the returned buffer.
AuthTAG	pointer to the authentication TAG buffer.

Return values

An	ErrorStatus enumeration value: SUCCESS: Operation done ERROR: Operation failed

Definition at line 670 of file stm32f4xx_cryp_aes.c.

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void CRYP_Cmd ( FunctionalState NewState )

Enables or disables the CRYP peripheral.

Parameters

NewState new state of the CRYP peripheral. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 403 of file stm32f4xx_cryp.c.

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void CRYP_DataIn ( uint32_t Data )

Writes data in the Data Input register (DIN).

Note: After the DIN register has been read once or several times, the FIFO must be flushed (using CRYP_FIFOFlush() function).

Parameters

Data	data to write in Data Input register

Return values

None

Definition at line 446 of file stm32f4xx_cryp.c.

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uint32_t CRYP_DataOut ( void )

Returns the last data entered into the output FIFO.

Parameters

None

Return values

Last	data entered into the output FIFO.

Definition at line 456 of file stm32f4xx_cryp.c.

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void CRYP_DeInit ( void )

Deinitializes the CRYP peripheral registers to their default reset values.

Parameters

None

Return values

None

Definition at line 219 of file stm32f4xx_cryp.c.

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ErrorStatus CRYP_DES_CBC	(	uint8_t	Mode,
		uint8_t	Key[8],
		uint8_t	InitVectors[8],
		uint8_t *	Input,
		uint32_t	Ilength,
		uint8_t *	Output
	)

Encrypt and decrypt using DES in CBC Mode.

Parameters

Mode	encryption or decryption Mode. This parameter can be one of the following values: MODE_ENCRYPT: Encryption MODE_DECRYPT: Decryption
Key	Key used for DES algorithm.
InitVectors	Initialisation Vectors used for DES algorithm.
Ilength	length of the Input buffer, must be a multiple of 8.
Input	pointer to the Input buffer.
Output	pointer to the returned buffer.

Return values

An	ErrorStatus enumeration value: SUCCESS: Operation done ERROR: Operation failed

Definition at line 200 of file stm32f4xx_cryp_des.c.

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ErrorStatus CRYP_DES_ECB	(	uint8_t	Mode,
		uint8_t	Key[8],
		uint8_t *	Input,
		uint32_t	Ilength,
		uint8_t *	Output
	)

Encrypt and decrypt using DES in ECB Mode.

Parameters

Mode	encryption or decryption Mode. This parameter can be one of the following values: MODE_ENCRYPT: Encryption MODE_DECRYPT: Decryption
Key	Key used for DES algorithm.
Ilength	length of the Input buffer, must be a multiple of 8.
Input	pointer to the Input buffer.
Output	pointer to the returned buffer.

Return values

An	ErrorStatus enumeration value: SUCCESS: Operation done ERROR: Operation failed

Definition at line 99 of file stm32f4xx_cryp_des.c.

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void CRYP_DMACmd	(	uint8_t	CRYP_DMAReq,
		FunctionalState	NewState
	)

Enables or disables the CRYP DMA interface.

Parameters

CRYP_DMAReq	specifies the CRYP DMA transfer request to be enabled or disabled. This parameter can be any combination of the following values: CRYP_DMAReq_DataOUT: DMA for outgoing(Tx) data transfer CRYP_DMAReq_DataIN: DMA for incoming(Rx) data transfer
NewState	new state of the selected CRYP DMA transfer request. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 681 of file stm32f4xx_cryp.c.

void CRYP_FIFOFlush ( void )

Flushes the IN and OUT FIFOs (that is read and write pointers of the FIFOs are reset)

Note: The FIFOs must be flushed only when BUSY flag is reset.

Parameters

None

Return values

None

Definition at line 391 of file stm32f4xx_cryp.c.

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FunctionalState CRYP_GetCmdStatus ( void )

Returns whether CRYP peripheral is enabled or disabled.

Parameters

none.

Return values

Current state of the CRYP peripheral (ENABLE or DISABLE).

Definition at line 853 of file stm32f4xx_cryp.c.

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FlagStatus CRYP_GetFlagStatus ( uint8_t CRYP_FLAG )

Checks whether the specified CRYP flag is set or not.

Parameters

CRYP_FLAG

specifies the CRYP flag to check. This parameter can be one of the following values:

CRYP_FLAG_IFEM: Input FIFO Empty flag.
CRYP_FLAG_IFNF: Input FIFO Not Full flag.
CRYP_FLAG_OFNE: Output FIFO Not Empty flag.
CRYP_FLAG_OFFU: Output FIFO Full flag.
CRYP_FLAG_BUSY: Busy flag.
CRYP_FLAG_OUTRIS: Output FIFO raw interrupt flag.
CRYP_FLAG_INRIS: Input FIFO raw interrupt flag.

Return values

The	new state of CRYP_FLAG (SET or RESET).

Definition at line 883 of file stm32f4xx_cryp.c.

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ITStatus CRYP_GetITStatus ( uint8_t CRYP_IT )

Checks whether the specified CRYP interrupt has occurred or not.

Note: This function checks the status of the masked interrupt (i.e the interrupt should be previously enabled).

Parameters

CRYP_IT

specifies the CRYP (masked) interrupt source to check. This parameter can be one of the following values:

CRYP_IT_INI: Input FIFO interrupt
CRYP_IT_OUTI: Output FIFO interrupt

Return values

The	new state of CRYP_IT (SET or RESET).

Definition at line 827 of file stm32f4xx_cryp.c.

void CRYP_Init ( CRYP_InitTypeDef * CRYP_InitStruct )

Initializes the CRYP peripheral according to the specified parameters in the CRYP_InitStruct.

Parameters

CRYP_InitStruct pointer to a CRYP_InitTypeDef structure that contains the configuration information for the CRYP peripheral.

Return values

None

Definition at line 235 of file stm32f4xx_cryp.c.

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void CRYP_ITConfig	(	uint8_t	CRYP_IT,
		FunctionalState	NewState
	)

Enables or disables the specified CRYP interrupts.

Parameters

CRYP_IT	specifies the CRYP interrupt source to be enabled or disabled. This parameter can be any combination of the following values: CRYP_IT_INI: Input FIFO interrupt CRYP_IT_OUTI: Output FIFO interrupt
NewState	new state of the specified CRYP interrupt. This parameter can be: ENABLE or DISABLE.

Return values

None

Definition at line 799 of file stm32f4xx_cryp.c.

void CRYP_IVInit ( CRYP_IVInitTypeDef * CRYP_IVInitStruct )

Initializes the CRYP Initialization Vectors(IV) according to the specified parameters in the CRYP_IVInitStruct.

Parameters

CRYP_IVInitStruct pointer to a CRYP_IVInitTypeDef structure that contains the configuration information for the CRYP Initialization Vectors(IV).

Return values

None

Definition at line 333 of file stm32f4xx_cryp.c.

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void CRYP_IVStructInit ( CRYP_IVInitTypeDef * CRYP_IVInitStruct )

Fills each CRYP_IVInitStruct member with its default value.

Parameters

CRYP_IVInitStruct pointer to a CRYP_IVInitTypeDef Initialization Vectors(IV) structure which will be initialized.

Return values

None

Definition at line 347 of file stm32f4xx_cryp.c.

void CRYP_KeyInit ( CRYP_KeyInitTypeDef * CRYP_KeyInitStruct )

Initializes the CRYP Keys according to the specified parameters in the CRYP_KeyInitStruct.

Parameters

CRYP_KeyInitStruct pointer to a CRYP_KeyInitTypeDef structure that contains the configuration information for the CRYP Keys.

Return values

None

Definition at line 296 of file stm32f4xx_cryp.c.

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void CRYP_KeyStructInit ( CRYP_KeyInitTypeDef * CRYP_KeyInitStruct )

Fills each CRYP_KeyInitStruct member with its default value.

Parameters

CRYP_KeyInitStruct pointer to a CRYP_KeyInitTypeDef structure which will be initialized.

Return values

None

Definition at line 315 of file stm32f4xx_cryp.c.

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void CRYP_PhaseConfig ( uint32_t CRYP_Phase )

Configures the AES-CCM and AES-GCM phases.

Note: This function is used only with AES-CCM or AES-GCM Algorithms

Parameters

CRYP_Phase

specifies the CRYP AES-CCM and AES-GCM phase to be configured. This parameter can be one of the following values:

CRYP_Phase_Init: Initialization phase
CRYP_Phase_Header: Header phase
CRYP_Phase_Payload: Payload phase
CRYP_Phase_Final: Final phase

Return values

None

Definition at line 366 of file stm32f4xx_cryp.c.

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void CRYP_RestoreContext ( CRYP_Context * CRYP_ContextRestore )

Restores the CRYP peripheral Context.

Note: Since teh DMA transfer is stopped in CRYP_SaveContext() function, after restoring the context, you have to enable the DMA again (if the DMA was previously used).

Parameters

CRYP_ContextRestore pointer to a CRYP_Context structure that contains the repository for saved context.

Note: The data that were saved during context saving must be rewrited into the IN FIFO.

Return values

None

Definition at line 602 of file stm32f4xx_cryp.c.

ErrorStatus CRYP_SaveContext	(	CRYP_Context *	CRYP_ContextSave,
		CRYP_KeyInitTypeDef *	CRYP_KeyInitStruct
	)

Saves the CRYP peripheral Context.

Note: This function stops DMA transfer before to save the context. After restoring the context, you have to enable the DMA again (if the DMA was previously used).

Parameters

CRYP_ContextSave	pointer to a CRYP_Context structure that contains the repository for current context.
CRYP_KeyInitStruct	pointer to a CRYP_KeyInitTypeDef structure that contains the configuration information for the CRYP Keys.

Return values

None

Definition at line 497 of file stm32f4xx_cryp.c.

void CRYP_StructInit ( CRYP_InitTypeDef * CRYP_InitStruct )

Fills each CRYP_InitStruct member with its default value.

Parameters

CRYP_InitStruct pointer to a CRYP_InitTypeDef structure which will be initialized.

Return values

None

Definition at line 274 of file stm32f4xx_cryp.c.

ErrorStatus CRYP_TDES_CBC	(	uint8_t	Mode,
		uint8_t	Key[24],
		uint8_t	InitVectors[8],
		uint8_t *	Input,
		uint32_t	Ilength,
		uint8_t *	Output
	)

Encrypt and decrypt using TDES in CBC Mode.

Parameters

Mode	encryption or decryption Mode. This parameter can be one of the following values: MODE_ENCRYPT: Encryption MODE_DECRYPT: Decryption
Key	Key used for TDES algorithm.
InitVectors	Initialisation Vectors used for TDES algorithm.
Input	pointer to the Input buffer.
Ilength	length of the Input buffer, must be a multiple of 8.
Output	pointer to the returned buffer.

Return values

An	ErrorStatus enumeration value: SUCCESS: Operation done ERROR: Operation failed

Definition at line 208 of file stm32f4xx_cryp_tdes.c.

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ErrorStatus CRYP_TDES_ECB	(	uint8_t	Mode,
		uint8_t	Key[24],
		uint8_t *	Input,
		uint32_t	Ilength,
		uint8_t *	Output
	)

Encrypt and decrypt using TDES in ECB Mode.

Parameters

Mode	encryption or decryption Mode. This parameter can be one of the following values: MODE_ENCRYPT: Encryption MODE_DECRYPT: Decryption
Key	Key used for TDES algorithm.
Ilength	length of the Input buffer, must be a multiple of 8.
Input	pointer to the Input buffer.
Output	pointer to the returned buffer.

Return values

An	ErrorStatus enumeration value: SUCCESS: Operation done ERROR: Operation failed

Definition at line 100 of file stm32f4xx_cryp_tdes.c.

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Modules

Data Structures

Macros

Functions

Detailed Description

Function Documentation