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wolfssl-examples
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Updated example to demonstrate using curveId parameter for make key and ECC verify.

pull/46/head
David Garske 2018-05-17 11:48:38 -07:00
parent 2ab4072d21
commit e11ecf9179
1 changed files with 11 additions and 1 deletions
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12
signature/firmware_sign/eccsign.c
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@ -13,6 +13,9 @@ static int gMyKeyInit = 0;
static const int gSignTimes = 10;
//#define ENABLE_BUF_PRINT
#define ECC_KEY_SIZE 48
#define ECC_KEY_CURVE ECC_SECP384R1
#ifdef ENABLE_BUF_PRINT
static void PrintBuffer(const byte* buffer, word32 length)
@ -97,7 +100,7 @@ static int SignFirmware(byte* hashBuf, word32 hashLen, byte* sigBuf, word32* sig
if (gMyKeyInit == 0) {
ret = wc_ecc_init(&gMyKey);
if (ret == 0) {
ret = wc_ecc_make_key(&rng, 32, &gMyKey);
ret = wc_ecc_make_key_ex(&rng, ECC_KEY_SIZE, &gMyKey, ECC_KEY_CURVE);
if (ret == 0) {
gMyKeyInit = 1;
printf("KeyGen Done\n");
@ -108,6 +111,13 @@ static int SignFirmware(byte* hashBuf, word32 hashLen, byte* sigBuf, word32* sig
/* sign hash */
if (ret == 0) {
ret = wc_ecc_sign_hash(hashBuf, hashLen, sigBuf, sigLen, &rng, &gMyKey);
printf("Sign ret %d, sigLen %d\n", ret, *sigLen);
}
if (ret == 0) {
int is_valid_sig = 0;
ret = wc_ecc_verify_hash(sigBuf, *sigLen, hashBuf, hashLen,
&is_valid_sig, &gMyKey);
printf("Verify ret %d, is_valid_sig %d\n", ret, is_valid_sig);
}
wc_FreeRng(&rng);