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Merge pull request #5552 from SparkiDev/ed_make_key_fixes

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Ed make public key wasn't checking whether private key set
This commit is contained in:
David Garske
2022-09-05 16:13:41 -07:00
committed by GitHub
parent e7dbb5b375 f807c70637
commit 31b8edd192
3 changed files with 41 additions and 5 deletions
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20
tests/api.c
View File

@@ -21426,11 +21426,21 @@ static int test_wc_ed25519_make_key(void)
#if defined(HAVE_ED25519)
ed25519_key key;
WC_RNG rng;
unsigned char pubkey[ED25519_PUB_KEY_SIZE];
ret = wc_InitRng(&rng);
if (ret == 0) {
ret = wc_ed25519_init(&key);
}
if (ret == 0) {
ret = wc_ed25519_make_public(&key, pubkey, sizeof(pubkey));
if (ret == ECC_PRIV_KEY_E) {
ret = 0;
}
else if (ret == 0) {
ret = -1;
}
}
printf(testingFmt, "wc_ed25519_make_key()");
if (ret == 0) {
ret = wc_ed25519_make_key(&rng, ED25519_KEY_SIZE, &key);
@@ -23249,11 +23259,21 @@ static int test_wc_ed448_make_key(void)
#if defined(HAVE_ED448)
ed448_key key;
WC_RNG rng;
unsigned char pubkey[ED448_PUB_KEY_SIZE];
ret = wc_InitRng(&rng);
if (ret == 0) {
ret = wc_ed448_init(&key);
}
if (ret == 0) {
ret = wc_ed448_make_public(&key, pubkey, sizeof(pubkey));
if (ret == ECC_PRIV_KEY_E) {
ret = 0;
}
else if (ret == 0) {
ret = -1;
}
}
printf(testingFmt, "wc_ed448_make_key()");
if (ret == 0) {
ret = wc_ed448_make_key(&rng, ED448_KEY_SIZE, &key);

14
wolfcrypt/src/ed25519.c
View File

@@ -182,6 +182,10 @@ int wc_ed25519_make_public(ed25519_key* key, unsigned char* pubKey,
if (key == NULL || pubKey == NULL || pubKeySz != ED25519_PUB_KEY_SIZE)
ret = BAD_FUNC_ARG;
if ((ret == 0) && (!key->privKeySet)) {
ret = ECC_PRIV_KEY_E;
}
if (ret == 0)
ret = ed25519_hash(key, key->k, ED25519_KEY_SIZE, az);
if (ret == 0) {
@@ -201,6 +205,8 @@ int wc_ed25519_make_public(ed25519_key* key, unsigned char* pubKey,
ge_scalarmult_base(&A, az);
ge_p3_tobytes(pubKey, &A);
#endif
key->pubKeySet = 1;
}
return ret;
@@ -220,6 +226,9 @@ int wc_ed25519_make_key(WC_RNG* rng, int keySz, ed25519_key* key)
if (keySz != ED25519_KEY_SIZE)
return BAD_FUNC_ARG;
key->privKeySet = 0;
key->pubKeySet = 0;
#ifdef WOLF_CRYPTO_CB
if (key->devId != INVALID_DEVID) {
ret = wc_CryptoCb_Ed25519Gen(rng, keySz, key);
@@ -233,8 +242,10 @@ int wc_ed25519_make_key(WC_RNG* rng, int keySz, ed25519_key* key)
if (ret != 0)
return ret;
key->privKeySet = 1;
ret = wc_ed25519_make_public(key, key->p, ED25519_PUB_KEY_SIZE);
if (ret != 0) {
key->privKeySet = 0;
ForceZero(key->k, ED25519_KEY_SIZE);
return ret;
}
@@ -242,9 +253,6 @@ int wc_ed25519_make_key(WC_RNG* rng, int keySz, ed25519_key* key)
/* put public key after private key, on the same buffer */
XMEMMOVE(key->k + ED25519_KEY_SIZE, key->p, ED25519_PUB_KEY_SIZE);
key->privKeySet = 1;
key->pubKeySet = 1;
return ret;
}

12
wolfcrypt/src/ed448.c
View File

@@ -185,6 +185,10 @@ int wc_ed448_make_public(ed448_key* key, unsigned char* pubKey, word32 pubKeySz)
ret = BAD_FUNC_ARG;
}
if ((ret == 0) && (!key->privKeySet)) {
ret = ECC_PRIV_KEY_E;
}
if (ret == 0)
ret = ed448_hash(key, key->k, ED448_KEY_SIZE, az, sizeof(az));
@@ -196,6 +200,8 @@ int wc_ed448_make_public(ed448_key* key, unsigned char* pubKey, word32 pubKeySz)
ge448_scalarmult_base(&A, az);
ge448_to_bytes(pubKey, &A);
key->pubKeySet = 1;
}
return ret;
@@ -225,20 +231,22 @@ int wc_ed448_make_key(WC_RNG* rng, int keySz, ed448_key* key)
}
if (ret == 0) {
key->pubKeySet = 0;
key->privKeySet = 0;
ret = wc_RNG_GenerateBlock(rng, key->k, ED448_KEY_SIZE);
}
if (ret == 0) {
key->privKeySet = 1;
ret = wc_ed448_make_public(key, key->p, ED448_PUB_KEY_SIZE);
if (ret != 0) {
key->privKeySet = 0;
ForceZero(key->k, ED448_KEY_SIZE);
}
}
if (ret == 0) {
/* put public key after private key, on the same buffer */
XMEMMOVE(key->k + ED448_KEY_SIZE, key->p, ED448_PUB_KEY_SIZE);
key->pubKeySet = 1;
}
return ret;