1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
#include "c_utils.h"
#define _ISOC99_SOURCE
#include <string.h>
#include <stdlib.h>
jclass ec_parameter_spec_class;
jclass ecgen_parameter_spec_class;
jclass secret_key_spec_class;
jclass pubkey_class;
jclass privkey_class;
jclass keypair_class;
jclass elliptic_curve_class;
jclass fp_field_class;
jclass f2m_field_class;
jclass point_class;
jclass biginteger_class;
jclass illegal_state_exception_class;
void init_classes(JNIEnv *env, const char* lib_name) {
jclass local_ec_parameter_spec_class = (*env)->FindClass(env, "java/security/spec/ECParameterSpec");
ec_parameter_spec_class = (*env)->NewGlobalRef(env, local_ec_parameter_spec_class);
jclass local_ecgen_parameter_spec_class = (*env)->FindClass(env, "java/security/spec/ECGenParameterSpec");
ecgen_parameter_spec_class = (*env)->NewGlobalRef(env, local_ecgen_parameter_spec_class);
jclass local_secret_key_spec_class = (*env)->FindClass(env, "javax/crypto/spec/SecretKeySpec");
secret_key_spec_class = (*env)->NewGlobalRef(env, local_secret_key_spec_class);
const char *pubkey_base = "cz/crcs/ectester/standalone/libs/jni/NativeECPublicKey$";
char pubkey_class_name[2048] = { 0 }; //strlen(pubkey_base) + strlen(lib_name) + 1
pubkey_class_name[0] = 0;
strcat(pubkey_class_name, pubkey_base);
strcat(pubkey_class_name, lib_name);
jclass local_pubkey_class = (*env)->FindClass(env, pubkey_class_name);
pubkey_class = (*env)->NewGlobalRef(env, local_pubkey_class);
const char *privkey_base = "cz/crcs/ectester/standalone/libs/jni/NativeECPrivateKey$";
char privkey_class_name[2048] = { 0 }; //strlen(privkey_base) + strlen(lib_name) + 1
privkey_class_name[0] = 0;
strcat(privkey_class_name, privkey_base);
strcat(privkey_class_name, lib_name);
jclass local_privkey_class = (*env)->FindClass(env, privkey_class_name);
privkey_class = (*env)->NewGlobalRef(env, local_privkey_class);
jclass local_keypair_class = (*env)->FindClass(env, "java/security/KeyPair");
keypair_class = (*env)->NewGlobalRef(env, local_keypair_class);
jclass local_elliptic_curve_class = (*env)->FindClass(env, "java/security/spec/EllipticCurve");
elliptic_curve_class = (*env)->NewGlobalRef(env, local_elliptic_curve_class);
jclass local_fp_field_class = (*env)->FindClass(env, "java/security/spec/ECFieldFp");
fp_field_class = (*env)->NewGlobalRef(env, local_fp_field_class);
jclass local_f2m_field_class = (*env)->FindClass(env, "java/security/spec/ECFieldF2m");
f2m_field_class = (*env)->NewGlobalRef(env, local_f2m_field_class);
jclass local_biginteger_class = (*env)->FindClass(env, "java/math/BigInteger");
biginteger_class = (*env)->NewGlobalRef(env, local_biginteger_class);
jclass local_point_class = (*env)->FindClass(env, "java/security/spec/ECPoint");
point_class = (*env)->NewGlobalRef(env, local_point_class);
jclass local_illegal_state_exception_class = (*env)->FindClass(env, "java/lang/IllegalStateException");
illegal_state_exception_class = (*env)->NewGlobalRef(env, local_illegal_state_exception_class);
}
void throw_new(JNIEnv *env, const char *class, const char *message) {
jclass clazz = (*env)->FindClass(env, class);
(*env)->ThrowNew(env, clazz, message);
}
void throw_new_var(JNIEnv *env, const char *class, const char *format, ...) {
char buffer[2048];
va_list args;
va_start(args, format);
int res = vsnprintf(buffer, 2048, format, args);
va_end(args);
throw_new(env, class, buffer);
}
jint get_kdf_bits(JNIEnv *env, jstring algorithm) {
if (algorithm == NULL) {
return 0;
}
const char *algo_data = (*env)->GetStringUTFChars(env, algorithm, NULL);
jint result = 0;
if (strcmp(algo_data, "DES") == 0) {
result = 64;
} else if (strcmp(algo_data, "BLOWFISH") == 0) {
result = 128;
} else if (strcmp(algo_data, "DESEDE") == 0) {
result = 192;
} else if (strcmp(algo_data, "AES") == 0 || strcmp(algo_data, "CAMELLIA") == 0) {
result = 256;
} else {
char *end;
long bits = strtol(algo_data, &end, 10);
if (*end == 0) {
result = (jint) bits;
}
}
(*env)->ReleaseStringUTFChars(env, algorithm, algo_data);
return result;
}
|
