1. 初始化ecp_group结构体 void mbedtls_ecp_group_init( mbedtls_ecp_group *grp ); 2. 初始化ecp_point结构体 void mbedtls_ecp_point_init( mbedtls_ecp_point *pt ); 3. 设置椭圆曲线 int mbedtls_ecp_group_load( mbedtls_ecp_group *grp, mbedtls_ecp_group_id id ); ECC硬件加速支持SECP256R1...
国密SM2算法也是基于椭圆曲线公钥算法,椭圆曲线上的运算都是和国际算法一样的,国密SM2规范中给出了推荐曲线,所以首先需要加载国密推荐参数。 mbedTLS中使用ecp_group_load函数加载参数,需要定义一下SM2的椭圆曲线,在定义曲线参数时字节序跟SM2规范的上的顺序不一样,这里需要注意一下,当时在这里折腾了很久。 staticconst...
;if(ret!=0){printf(" failed\n! mbedtls_ctr_drbg_seed returned %d(-0x%04x)\n",ret,-ret);gotoexit;}printf(" ok\n");/* 3. select ecp group SECP256R1 */printf("\n. Select ecp group SECP256R1...");ret=mbedtls_ecp_group_load(&grp,MBEDTLS_ECP_DP_SECP256R1);if(ret!=0){prin...
* mbedtls_ecp_group_load() or mbedtls_ecp_tls_read_group() * functions. */ void mbedtls_ecp_group_init( mbedtls_ecp_group *grp ); 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. ② 初始化椭圆曲线点结构体: /** * \brief This function initializes an ECP group context * without loading a...
mbedtls_ecp_group_load( &ssl->handshake->ecdh_ctx.grp, 02809 (*curve)->grp_id ) ) != 0 ) 02810 { 02811 MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecp_group_load", ret ); 02812 return( ret ); 02813 } 02814 02815 if( ( ret = mbedtls_ecdh_make_params...
ECP point structure (jacobian coordinates)More... structmbedtls_ecp_group ECP group structure.More... structmbedtls_ecp_keypair ECP key pair structure.More... Enumerations enummbedtls_ecp_group_id{ , MBEDTLS_ECP_DP_SECP192R1,MBEDTLS_ECP_DP_SECP224R1,MBEDTLS_ECP_DP_SECP256R1,MBEDTLS_ECP_DP...
mbedtls_ecp_group grp; /*!< elliptic curve used group */ mbedtls_mpi d; /*!< secret value (private key) */ mbedtls_ecp_point Pb; /*!< public value (public key) */ } sm2_context; 1. 2. 3. 4. 5. 6. 7. 8. 9.
mbedtls_ecp_group_load(&public_key.grp, MBEDTLS_ECP_DP_SECP256R1); mbedtls_ecp_point_init(&public_key.Q); result = mbedtls_ecp_point_read_binary( &public_key.grp, &public_key.Q, public_key_data, PUBLIC_KEY_DATA_SIZE ); if (result != MBEDTLS_OK) goto CLEANUP; ...
TEST_EQUAL(0, mbedtls_ecp_group_load(&grp, curve)); PSA_ASSERT(psa_crypto_init()); TEST_EQUAL(0, mbedtls_ecdsa_sign(&grp, &r, &s, &d, buf, sizeof(buf), mbedtls_psa_get_random, MBEDTLS_PSA_RANDOM_STATE)); exit: mbedtls_mpi_free(&d); mbedtls_mpi_free(...
mbedtls_ecp_group* grp, const uint8_t* private_key, U2fPubKey* public_key) { mbedtls_ecp_point Q; mbedtls_mpi d; size_t olen; mbedtls_ecp_point_init(&Q); mbedtls_mpi_init(&d); MCHECK(mbedtls_mpi_read_binary(&d, private_key, U2F_EC_KEY_SIZE)); MCHECK(mbedtls_ecp_mul(grp, &...