uECC.h File Reference

#include <stdint.h>

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Typedefs
typedef struct uECC_Curve_t	uECC_Curve_t
typedef int(*	uECC_RNG_Function) (uint8_t *dest, unsigned size)

Functions
const uECC_Curve_t *	uECC_secp256r1 (void)
	Return the static secp256r1 curve descriptor.
const uECC_Curve_t *	uECC_secp256k1 (void)
	Return the static secp256k1 curve descriptor.
void	uECC_set_rng (uECC_RNG_Function rng_function)
	No-op: ESP32 hardware RNG is used internally; no external callback needed.
int	uECC_make_key (uint8_t *public_key, uint8_t *private_key, const uECC_Curve_t *curve)
	Generate an ECC key pair using mbedTLS and the ESP32 hardware RNG.
int	uECC_shared_secret (const uint8_t *public_key, const uint8_t *private_key, uint8_t *secret, const uECC_Curve_t *curve)
	Compute ECDH shared secret (X-coordinate of privKey * pubKey).
int	uECC_verify (const uint8_t *public_key, const uint8_t *hash, unsigned hash_size, const uint8_t *signature, const uECC_Curve_t *curve)
	Verify an ECDSA signature (raw 64-byte r||s) against a hash.

Typedef Documentation

uECC_Curve_t

typedef struct uECC_Curve_t uECC_Curve_t

Definition at line 22 of file uECC.h.

uECC_RNG_Function

typedef int(* uECC_RNG_Function) (uint8_t *dest, unsigned size)

Definition at line 32 of file uECC.h.

Function Documentation

uECC_make_key()

int uECC_make_key	(	uint8_t *	public_key,
		uint8_t *	private_key,
		const uECC_Curve_t *	curve )

Generate an ECC key pair using mbedTLS and the ESP32 hardware RNG.

Definition at line 92 of file uECC_esp32.cpp.

References COORD_SIZE_BYTES, COORD_X_OFFSET, ECC_XY_KEY_SIZE, esp32_mbedtls_rng(), uECC_Curve_t::grp_id, MBEDTLS_OK, UECC_FAILURE, UECC_SUCCESS, and UNCOMPRESSED_PUB_SIZE.

Referenced by ESP32CryptoProvider::makeKey().

uECC_secp256k1()

const uECC_Curve_t * uECC_secp256k1

(

void

)

Return the static secp256k1 curve descriptor.

Definition at line 75 of file uECC_esp32.cpp.

References s_secp256k1.

Referenced by toCurve().

uECC_secp256r1()

const uECC_Curve_t * uECC_secp256r1

(

void

)

Return the static secp256r1 curve descriptor.

Definition at line 70 of file uECC_esp32.cpp.

References s_secp256r1.

Referenced by toCurve().

uECC_set_rng()

void uECC_set_rng

(

uECC_RNG_Function

rng_function

)

No-op: ESP32 hardware RNG is used internally; no external callback needed.

Definition at line 80 of file uECC_esp32.cpp.

References UECC_LOG_TAG.

uECC_shared_secret()

int uECC_shared_secret	(	const uint8_t *	public_key,
		const uint8_t *	private_key,
		uint8_t *	secret,
		const uECC_Curve_t *	curve )

Compute ECDH shared secret (X-coordinate of privKey * pubKey).

Definition at line 144 of file uECC_esp32.cpp.

References COORD_SIZE_BYTES, COORD_X_OFFSET, ECC_XY_KEY_SIZE, esp32_mbedtls_rng(), uECC_Curve_t::grp_id, MBEDTLS_OK, POINT_PREFIX_OFFSET, UECC_FAILURE, UECC_SUCCESS, UNCOMPRESSED_PREFIX, and UNCOMPRESSED_PUB_SIZE.

Referenced by ESP32CryptoProvider::ecdh().

uECC_verify()

int uECC_verify	(	const uint8_t *	public_key,
		const uint8_t *	hash,
		unsigned	hash_size,
		const uint8_t *	signature,
		const uECC_Curve_t *	curve )

Verify an ECDSA signature (raw 64-byte r||s) against a hash.

Definition at line 210 of file uECC_esp32.cpp.

References COORD_SIZE_BYTES, COORD_X_OFFSET, ECC_XY_KEY_SIZE, uECC_Curve_t::grp_id, MBEDTLS_OK, POINT_PREFIX_OFFSET, RAW_SIG_R_OFFSET, RAW_SIG_S_OFFSET, UECC_FAILURE, UECC_SUCCESS, UNCOMPRESSED_PREFIX, and UNCOMPRESSED_PUB_SIZE.

Referenced by ESP32CryptoProvider::ecdsaVerify().