diff options
Diffstat (limited to 'standalone/src')
3 files changed, 45 insertions, 0 deletions
diff --git a/standalone/src/main/java/cz/crcs/ectester/standalone/libs/IppcpLib.java b/standalone/src/main/java/cz/crcs/ectester/standalone/libs/IppcpLib.java index 115fe00..fa51585 100644 --- a/standalone/src/main/java/cz/crcs/ectester/standalone/libs/IppcpLib.java +++ b/standalone/src/main/java/cz/crcs/ectester/standalone/libs/IppcpLib.java @@ -17,4 +17,10 @@ public class IppcpLib extends NativeECLibrary { @Override public native Set<String> getCurves(); + + @Override + public native boolean supportsDeterministicPRNG(); + + @Override + public native boolean setupDeterministicPRNG(byte[] seed); } diff --git a/standalone/src/main/resources/cz/crcs/ectester/standalone/libs/jni/ippcp.c b/standalone/src/main/resources/cz/crcs/ectester/standalone/libs/jni/ippcp.c index fbf917e..86f0f7e 100644 --- a/standalone/src/main/resources/cz/crcs/ectester/standalone/libs/jni/ippcp.c +++ b/standalone/src/main/resources/cz/crcs/ectester/standalone/libs/jni/ippcp.c @@ -136,6 +136,29 @@ JNIEXPORT jobject JNICALL Java_cz_crcs_ectester_standalone_libs_IppcpLib_getCurv return result; } + +JNIEXPORT jboolean JNICALL Java_cz_crcs_ectester_standalone_libs_IppcpLib_supportsDeterministicPRNG(JNIEnv *env, jobject self) { + return JNI_TRUE; +} + +JNIEXPORT jboolean JNICALL Java_cz_crcs_ectester_standalone_libs_IppcpLib_setupDeterministicPRNG(JNIEnv *env, jobject self, jbyteArray seed) { + jsize seed_length = (*env)->GetArrayLength(env, seed); + if (seed_length % 4 != 0) { + fprintf(stderr, "Error setting seed, needs to be a multiple of 4 bytes.\n"); + return JNI_FALSE; + } + int bn_size; + ippsBigNumGetSize(seed_length / 4, &bn_size); + uint8_t bn_buf[bn_size]; + IppsBigNumState *bn = (IppsBigNumState *)bn_buf; + ippsBigNumInit(seed_length / 4, bn); + jbyte *seed_data = (*env)->GetByteArrayElements(env, seed, NULL); + ippsSet_BN(IppsBigNumPOS, seed_length / 4, (Ipp32u *) seed_data, bn); + ippsPRNGSetSeed(bn, prng_state); + (*env)->ReleaseByteArrayElements(env, seed, seed_data, JNI_ABORT); + return JNI_TRUE; +} + JNIEXPORT jboolean JNICALL Java_cz_crcs_ectester_standalone_libs_jni_NativeKeyPairGeneratorSpi_00024Ippcp_keysizeSupported(JNIEnv *env, jobject this, jint keysize) { diff --git a/standalone/src/main/resources/cz/crcs/ectester/standalone/libs/jni/native.h b/standalone/src/main/resources/cz/crcs/ectester/standalone/libs/jni/native.h index b8b2af1..627f38f 100644 --- a/standalone/src/main/resources/cz/crcs/ectester/standalone/libs/jni/native.h +++ b/standalone/src/main/resources/cz/crcs/ectester/standalone/libs/jni/native.h @@ -1570,6 +1570,22 @@ JNIEXPORT jobject JNICALL Java_cz_crcs_ectester_standalone_libs_IppcpLib_createP JNIEXPORT jobject JNICALL Java_cz_crcs_ectester_standalone_libs_IppcpLib_getCurves (JNIEnv *, jobject); +/* +* Class: cz_crcs_ectester_standalone_libs_IppcpLib +* Method: supportsDeterministicPRNG +* Signature: ()Z +*/ +JNIEXPORT jboolean JNICALL Java_cz_crcs_ectester_standalone_libs_IppcpLib_supportsDeterministicPRNG +(JNIEnv *, jobject); + +/* +* Class: cz_crcs_ectester_standalone_libs_IppcpLib +* Method: setupDeterministicPRNG +* Signature: ([B)Z +*/ +JNIEXPORT jboolean JNICALL Java_cz_crcs_ectester_standalone_libs_IppcpLib_setupDeterministicPRNG +(JNIEnv *, jobject, jbyteArray); + #ifdef __cplusplus } #endif |