frost/secp256k1-kmp
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Handle inputs/outputs and nulls correctly.

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This commit is contained in:
kngako
2024-08-07 02:48:25 +02:00
parent 23739e13a8
commit 86d7d9835f
6 changed files with 123 additions and 62 deletions
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4
jni/c/headers/java/fr_acinq_secp256k1_Secp256k1CFunctions.h
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@@ -270,10 +270,10 @@ JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_frost_shares_gen
* Signature: (J[B[BII[[B)[[[B
* Signature: (J[BII[[B)[[[B
*/
JNIEXPORT jobjectArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1frost_1shares_1gen
(JNIEnv *, jclass, jlong, jbyteArray, jbyteArray, jint, jint, jobjectArray);
(JNIEnv *, jclass, jlong, jbyteArray, jint, jint, jobjectArray);
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions

46
jni/c/src/fr_acinq_secp256k1_Secp256k1CFunctions.c
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@@ -1340,11 +1340,47 @@ JNIEXPORT jbyteArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256
/*
* Class: fr_acinq_secp256k1_Secp256k1CFunctions
* Method: secp256k1_frost_share_verify
* Signature: (J[B[B[[B)I
* Method: secp256k1_frost_shares_gen
* Signature: (J[B[BII[[B)[[[B
*/
JNIEXPORT jint JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1frost_1share_1verify
(JNIEnv *, jclass, jlong, jbyteArray, jbyteArray, jobjectArray)
JNIEXPORT jobjectArray JNICALL Java_fr_acinq_secp256k1_Secp256k1CFunctions_secp256k1_1frost_1shares_1gen(JNIEnv *penv, jclass clazz, jlong jctx, jbyteArray jseed32, jint jthreshold, jint n_participants, jobjectArray jids33)
{
return 0;
secp256k1_context *ctx = (secp256k1_context *)jctx;
// This is what gets returned
secp256k1_frost_share shares[n_participants];
secp256k1_pubkey vss_commitment[n_participants];
unsigned char pok64[64];
// This is what gets passed
unsigned char seed32[32];
const unsigned char *ids[n_participants];
int result = 0;
result = secp256k1_frost_shares_gen(
ctx,
shares,
vss_commitment,
jpok64,
jseed32,
jthreshold,
n_participants,
jids33
);
CHECKRESULT(!result, "secp256k1_frost_shares_gen failed");
jobjectArray output = (*penv)->NewObjectArray(penv, 3, jbyteArray, NULL);
jnonce = (*penv)->NewByteArray(penv, sizeof(shares));
nonce_ptr = (*penv)->GetByteArrayElements(penv, jnonce, 0);
memcpy(nonce_ptr, nonce, sizeof(nonce));
(*penv)->ReleaseByteArrayElements(penv, jnonce, nonce_ptr, 0);
output[0];
output[1];
output[2];
return output;
}