Crypto

This module includes cryptographic functions. More...

Macros
#define	OT_CRYPTO_HMAC_SHA_HASH_SIZE   32
	Length of HMAC SHA (in bytes).

Functions
void	otCryptoHmacSha256 (const uint8_t *aKey, uint16_t aKeyLength, const uint8_t *aBuf, uint16_t aBufLength, uint8_t *aHash)
void	otCryptoAesCcm (const uint8_t *aKey, uint16_t aKeyLength, uint8_t aTagLength, const void *aNonce, uint8_t aNonceLength, const void *aHeader, uint32_t aHeaderLength, void *aPlainText, void *aCipherText, uint32_t aLength, bool aEncrypt, void *aTag)

Detailed Description

This module includes cryptographic functions.

Function Documentation

void otCryptoAesCcm	(	const uint8_t *	aKey,
		uint16_t	aKeyLength,
		uint8_t	aTagLength,
		const void *	aNonce,
		uint8_t	aNonceLength,
		const void *	aHeader,
		uint32_t	aHeaderLength,
		void *	aPlainText,
		void *	aCipherText,
		uint32_t	aLength,
		bool	aEncrypt,
		void *	aTag
	)

This method performs AES CCM computation.

Parameters

[in]	aKey	A pointer to the key.
[in]	aKeyLength	Length of the key in bytes.
[in]	aTagLength	Length of tag in bytes.
[in]	aNonce	A pointer to the nonce.
[in]	aNonceLength	Length of nonce in bytes.
[in]	aHeader	A pointer to the header.
[in]	aHeaderLength	Length of header in bytes.
[in,out]	aPlainText	A pointer to the plaintext.
[in,out]	aCipherText	A pointer to the ciphertext.
[in]	aLength	Plaintext length in bytes.
[in]	aEncrypt	true on encrypt and false on decrypt.
[out]	aTag	A pointer to the tag.

void otCryptoHmacSha256	(	const uint8_t *	aKey,
		uint16_t	aKeyLength,
		const uint8_t *	aBuf,
		uint16_t	aBufLength,
		uint8_t *	aHash
	)

This function performs HMAC computation.

Parameters

[in]	aKey	A pointer to the key.
[in]	aKeyLength	The key length in bytes.
[in]	aBuf	A pointer to the input buffer.
[in]	aBufLength	The length of aBuf in bytes.
[out]	aHash	A pointer to the output hash buffer.