Detailed Description

Cryptography accelerator peripheral API.

Version: 5.1.2

License

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

The origin of this software must not be misrepresented; you must not claim that you wrote the original software.
Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
This notice may not be removed or altered from any source distribution.

DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no obligation to support this Software. Silicon Labs is providing the Software "AS IS", with no express or implied warranties of any kind, including, but not limited to, any implied warranties of merchantability or fitness for any particular purpose or warranties against infringement of any proprietary rights of a third party.

Silicon Labs will not be liable for any consequential, incidental, or special damages, or any other relief, or for any claim by any third party, arising from your use of this Software.

Definition in file em_crypto.c.

#include "em_device.h"
#include "em_crypto.h"
#include "em_assert.h"

Go to the source code of this file.

Functions
void	CRYPTO_AES_CBC128 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, const uint8_t *iv, bool encrypt)
	AES Cipher-block chaining (CBC) cipher mode encryption/decryption, 128 bit key. More...

void	CRYPTO_AES_CBC256 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, const uint8_t *iv, bool encrypt)
	AES Cipher-block chaining (CBC) cipher mode encryption/decryption, 256 bit key. More...

static void	CRYPTO_AES_CBCx (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, const uint8_t *iv, bool encrypt, CRYPTO_KeyWidth_TypeDef keyWidth)
	Cipher-block chaining (CBC) cipher mode encryption/decryption, 128/256 bit key. More...

void	CRYPTO_AES_CFB128 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, const uint8_t *iv, bool encrypt)
	AES Cipher feedback (CFB) cipher mode encryption/decryption, 128 bit key. More...

void	CRYPTO_AES_CFB256 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, const uint8_t *iv, bool encrypt)
	AES Cipher feedback (CFB) cipher mode encryption/decryption, 256 bit key. More...

static void	CRYPTO_AES_CFBx (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, const uint8_t *iv, bool encrypt, CRYPTO_KeyWidth_TypeDef keyWidth)
	Cipher feedback (CFB) cipher mode encryption/decryption, 128/256 bit key. More...

void	CRYPTO_AES_CTR128 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, uint8_t *ctr, CRYPTO_AES_CtrFuncPtr_TypeDef ctrFunc)
	AES Counter (CTR) cipher mode encryption/decryption, 128 bit key. More...

void	CRYPTO_AES_CTR256 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, uint8_t *ctr, CRYPTO_AES_CtrFuncPtr_TypeDef ctrFunc)
	AES Counter (CTR) cipher mode encryption/decryption, 256 bit key. More...

void	CRYPTO_AES_CTRUpdate32Bit (uint8_t *ctr)
	Update last 32 bits of 128 bit counter, by incrementing with 1. More...

static void	CRYPTO_AES_CTRx (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, uint8_t *ctr, CRYPTO_AES_CtrFuncPtr_TypeDef ctrFunc, CRYPTO_KeyWidth_TypeDef keyWidth)
	Counter (CTR) cipher mode encryption/decryption, 128/256 bit key. More...

void	CRYPTO_AES_DecryptKey128 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t *in)
	Generate 128 bit AES decryption key from 128 bit encryption key. The decryption key is used for some cipher modes when decrypting. More...

void	CRYPTO_AES_DecryptKey256 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t *in)
	Generate 256 bit AES decryption key from 256 bit encryption key. The decryption key is used for some cipher modes when decrypting. More...

void	CRYPTO_AES_ECB128 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, bool encrypt)
	AES Electronic Codebook (ECB) cipher mode encryption/decryption, 128 bit key. More...

void	CRYPTO_AES_ECB256 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, bool encrypt)
	AES Electronic Codebook (ECB) cipher mode encryption/decryption, 256 bit key. More...

static void	CRYPTO_AES_ECBx (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, bool encrypt, CRYPTO_KeyWidth_TypeDef keyWidth)
	Electronic Codebook (ECB) cipher mode encryption/decryption, 128/256 bit key. More...

void	CRYPTO_AES_OFB128 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, const uint8_t *iv)
	AES Output feedback (OFB) cipher mode encryption/decryption, 128 bit key. More...

void	CRYPTO_AES_OFB256 (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, const uint8_t *iv)
	AES Output feedback (OFB) cipher mode encryption/decryption, 256 bit key. More...

static void	CRYPTO_AES_OFBx (CRYPTO_TypeDef crypto, uint8_t out, const uint8_t in, unsigned int len, const uint8_t key, const uint8_t *iv, CRYPTO_KeyWidth_TypeDef keyWidth)
	Output feedback (OFB) cipher mode encryption/decryption, 128/256 bit key. More...

static void	CRYPTO_AES_ProcessLoop (CRYPTO_TypeDef crypto, uint32_t len, CRYPTO_DataReg_TypeDef inReg, uint32_t in, CRYPTO_DataReg_TypeDef outReg, uint32_t *out)
	Function performs generic AES loop. More...

void	CRYPTO_KeyRead (CRYPTO_TypeDef *crypto, CRYPTO_KeyBuf_TypeDef val, CRYPTO_KeyWidth_TypeDef keyWidth)
	Read the key value currently used by the CRYPTO module. More...

void	CRYPTO_ModulusSet (CRYPTO_TypeDef *crypto, CRYPTO_ModulusId_TypeDef modType)
	Set the modulus type used for wide arithmetic operations. More...

void	CRYPTO_Mul (CRYPTO_TypeDef crypto, uint32_t A, int aSize, uint32_t B, int bSize, uint32_t R, int rSize)
	Multiply two big integers. More...

void	CRYPTO_SHA_1 (CRYPTO_TypeDef crypto, const uint8_t msg, uint64_t msgLen, CRYPTO_SHA1_Digest_TypeDef msgDigest)
	Perform a SHA-1 hash operation on a message. More...

void	CRYPTO_SHA_256 (CRYPTO_TypeDef crypto, const uint8_t msg, uint64_t msgLen, CRYPTO_SHA256_Digest_TypeDef msgDigest)
	Perform a SHA-256 hash operation on a message. More...

__STATIC_INLINE void	cryptoBigintIncrement (uint32_t *words32bits, int num32bitWords)
	Increment value of 32bit word array by one. More...

__STATIC_INLINE void	cryptoBigintZeroize (uint32_t *words32bits, int num32bitWords)
	Set 32bit word array to zero. More...

Detailed Description

License

Functions