#include "ps_crypto_interface.h"
#include <stdbool.h>
#include "tfm_crypto_defs.h"
#include "psa/crypto.h"
#include "tfm_memory_utils.h"

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Macros
#define	PS_CRYPTO_AEAD_ALG PSA_ALG_GCM

#define	PS_KEY_TYPE PSA_KEY_TYPE_AES

#define	PS_KEY_USAGE (PSA_KEY_USAGE_ENCRYPT \| PSA_KEY_USAGE_DECRYPT)

#define	PS_CRYPTO_ALG PSA_ALG_AEAD_WITH_TAG_LENGTH(PS_CRYPTO_AEAD_ALG, PS_TAG_LEN_BYTES)

Typedefs
typedef char	PS_ERROR_NOT_AEAD_ALG [(PSA_ALG_IS_AEAD(PSA_ALG_AEAD_WITH_TAG_LENGTH(PSA_ALG_GCM, 16)))?1:-1]

Functions
psa_status_t	ps_crypto_init (void)
	Initializes the crypto engine. More...

psa_status_t	ps_crypto_setkey (void)
	Sets the key to use for crypto operations for the current client. More...

psa_status_t	ps_crypto_destroykey (void)
	Destroys the transient key used for crypto operations. More...

void	ps_crypto_set_iv (const union ps_crypto_t *crypto)
	Provides current IV value to crypto layer. More...

void	ps_crypto_get_iv (union ps_crypto_t *crypto)
	Gets a new IV value into the crypto union. More...

psa_status_t	ps_crypto_encrypt_and_tag (union ps_crypto_t crypto, const uint8_t add, size_t add_len, const uint8_t in, size_t in_len, uint8_t out, size_t out_size, size_t *out_len)
	Encrypts and tags the given plaintext data. More...

psa_status_t	ps_crypto_auth_and_decrypt (const union ps_crypto_t crypto, const uint8_t add, size_t add_len, uint8_t in, size_t in_len, uint8_t out, size_t out_size, size_t *out_len)
	Decrypts and authenticates the given encrypted data. More...

psa_status_t	ps_crypto_generate_auth_tag (union ps_crypto_t crypto, const uint8_t add, uint32_t add_len)
	Generates authentication tag for given data. More...

psa_status_t	ps_crypto_authenticate (const union ps_crypto_t crypto, const uint8_t add, uint32_t add_len)
	Authenticate given data against the tag. More...

Macro Definition Documentation

#define PS_CRYPTO_AEAD_ALG PSA_ALG_GCM

Definition at line 17 of file ps_crypto_interface.c.

#define PS_CRYPTO_ALG PSA_ALG_AEAD_WITH_TAG_LENGTH(PS_CRYPTO_AEAD_ALG, PS_TAG_LEN_BYTES)

Definition at line 26 of file ps_crypto_interface.c.

#define PS_KEY_TYPE PSA_KEY_TYPE_AES

Definition at line 21 of file ps_crypto_interface.c.

#define PS_KEY_USAGE (PSA_KEY_USAGE_ENCRYPT | PSA_KEY_USAGE_DECRYPT)

Definition at line 23 of file ps_crypto_interface.c.

Typedef Documentation

typedef char PS_ERROR_NOT_AEAD_ALG[(PSA_ALG_IS_AEAD(PSA_ALG_AEAD_WITH_TAG_LENGTH(PSA_ALG_GCM,16)))?1:-1]

Definition at line 36 of file ps_crypto_interface.c.

Function Documentation

psa_status_t ps_crypto_auth_and_decrypt	(	const union ps_crypto_t *	crypto,
		const uint8_t *	add,
		size_t	add_len,
		uint8_t *	in,
		size_t	in_len,
		uint8_t *	out,
		size_t	out_size,
		size_t *	out_len
	)

Decrypts and authenticates the given encrypted data.

Parameters

[in]	crypto	Pointer to the crypto union
[in]	add	Pointer to the associated data
[in]	add_len	Length of the associated data
[in]	in	Pointer to the input data
[in]	in_len	Length of the input data
[out]	out	Pointer to the output buffer for decrypted data
[in]	out_size	Size of the output buffer
[out]	out_len	On success, the length of the output data

Returns: Returns values as described in psa_status_t

Definition at line 186 of file ps_crypto_interface.c.

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psa_status_t ps_crypto_authenticate	(	const union ps_crypto_t *	crypto,
		const uint8_t *	add,
		uint32_t	add_len
	)

Authenticate given data against the tag.

Parameters

[in]	crypto	Pointer to the crypto union
[in]	add	Pointer to the data to authenticate
[in]	add_len	Length of the data to authenticate

Returns: Returns values as described in psa_status_t

Definition at line 232 of file ps_crypto_interface.c.

psa_status_t ps_crypto_destroykey ( void )

Destroys the transient key used for crypto operations.

Returns: Returns values as described in psa_status_t

Definition at line 99 of file ps_crypto_interface.c.

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psa_status_t ps_crypto_encrypt_and_tag	(	union ps_crypto_t *	crypto,
		const uint8_t *	add,
		size_t	add_len,
		const uint8_t *	in,
		size_t	in_len,
		uint8_t *	out,
		size_t	out_size,
		size_t *	out_len
	)

Encrypts and tags the given plaintext data.

Parameters

[in,out]	crypto	Pointer to the crypto union
[in]	add	Pointer to the associated data
[in]	add_len	Length of the associated data
[in]	in	Pointer to the input data
[in]	in_len	Length of the input data
[out]	out	Pointer to the output buffer for encrypted data
[in]	out_size	Size of the output buffer
[out]	out_len	On success, the length of the output data

Returns: Returns values as described in psa_status_t

Definition at line 159 of file ps_crypto_interface.c.

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psa_status_t ps_crypto_generate_auth_tag	(	union ps_crypto_t *	crypto,
		const uint8_t *	add,
		uint32_t	add_len
	)

Generates authentication tag for given data.

Parameters

[in,out]	crypto	Pointer to the crypto union
[in]	add	Pointer to the data to authenticate
[in]	add_len	Length of the data to authenticate

Returns: Returns values as described in psa_status_t

Definition at line 213 of file ps_crypto_interface.c.

void ps_crypto_get_iv ( union ps_crypto_t * crypto )

Gets a new IV value into the crypto union.

Parameters

[out] crypto Pointer to the crypto union

Definition at line 117 of file ps_crypto_interface.c.

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psa_status_t ps_crypto_init ( void )

Initializes the crypto engine.

Returns: Returns values as described in psa_status_t

Definition at line 42 of file ps_crypto_interface.c.

void ps_crypto_set_iv ( const union ps_crypto_t * crypto )

Provides current IV value to crypto layer.

Parameters

[in] crypto Pointer to the crypto union

Definition at line 112 of file ps_crypto_interface.c.

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psa_status_t ps_crypto_setkey ( void )

Sets the key to use for crypto operations for the current client.

Returns: Returns values as described in psa_status_t

Definition at line 50 of file ps_crypto_interface.c.

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Macros

Typedefs

Functions

Macro Definition Documentation

Typedef Documentation

Function Documentation