JNA结构体嵌套如何调用

一、C语言结构体

typedef struct ECCrefPublicKey_st {
unsigned int bits;
unsigned char x[ECCref_MAX_LEN];
unsigned char y[ECCref_MAX_LEN];
}ECCrefPublicKey;



typedef struct ECCCipher_st {
unsigned char x[ECCref_MAX_LEN];
unsigned char y[ECCref_MAX_LEN];
unsigned char M[32];
unsigned int L;
unsigned char C[1024];
}ECCCipher;



typedef ECCCipher ECCCIPHERBLOB;
typedef ECCrefPublicKey ECCPUBLICKEYBLOB;



typedef struct SDF_ENVELOPEDKEYBLOB {
unsigned long ulAsymmAlgID;
unsigned long ulSymmAlgID;
ECCCIPHERBLOB ECCCipherBlob;
ECCPUBLICKEYBLOB PubKey;
unsigned char cbEncryptedPriKey[ECCref_MAX_LEN];
}ENVELOPEDKEYBLOB, * PENVELOPEDKEYBLOB;

二、C语言接口

//生成ECC密钥对的保护结构
int SDF_Ext_GenEnvKeyPairBlob_ECC(void* hSessionHandle,
unsigned int symmAlgID,
ECCrefPublicKey* pucPublicKey,
ENVELOPEDKEYBLOB* pEnvelopedKeyBlob);

三、jna接口

int SDF_Ext_GenEnvKeyPairBlob_ECC(Pointer var1, NativeLong var2, ECCrefPublicKey.ByReference pucPublicKey, ENVELOPEDKEYBLOB.ByReference blob);

四、JNA结构体

 class ENVELOPEDKEYBLOB extends Structure {
            public NativeLong ulAsymmAlgID;
            public NativeLong ulSymmAlgID;
            public ECCCipher ECCCipherBlob;
            public ECCrefPublicKey PubKey;
            public byte[] cbEncryptedPriKey = new byte[64];

            @Override
            protected List getFieldOrder() {
                return Arrays.asList("ulAsymmAlgID", "ulSymmAlgID", "ECCCipherBlob", "PubKey", "cbEncryptedPriKey");

            }

            public static class ByValue extends ENVELOPEDKEYBLOB implements Structure.ByValue {
                public ByValue() {
                }
            }

            public static class ByReference extends ENVELOPEDKEYBLOB implements Structure.ByReference {
                public ByReference() {
                }
            }
        }

public static class ECCCipher extends Structure {
            public byte[] x = new byte[64];
            public byte[] y = new byte[64];
            public byte[] M = new byte[32];
            public int L;
            public byte[] C = new byte[1024];

            public static class ByValue extends ECCCipher implements Structure.ByValue {
                public ByValue() {
                }
            }

            public static class ByReference extends ECCCipher implements Structure.ByReference {
                public ByReference() {
                }
            }
        }

class ECCrefPublicKey extends Structure {
            public int bits;
            public byte[] x = new byte[64];
            public byte[] y = new byte[64];

            
            @Override
            protected List<String> getFieldOrder() {
                return Arrays.asList(new String[] {"bits", "x","y"});
            }

            @Override
            public String toString() {
                return JSON.toJSONString(this);
            }

            public static class ByValue extends ECCrefPublicKey implements Structure.ByValue {
                public ByValue() {

                }
            }

            public static class ByReference extends ECCrefPublicKey implements Structure.ByReference {
                public ByReference() {

                }
            }
        }

五、jna调用demo

TestSDF_API.TestCLibrary.ECCCipher ECCCipherBlob = new TestSDF_API.TestCLibrary.ECCCipher();
TestSDF_API.TestCLibrary.ECCrefPublicKey pubKey = new TestSDF_API.TestCLibrary.ECCrefPublicKey();
TestSDF_API.TestCLibrary.ENVELOPEDKEYBLOB.ByReference pEnvelopedKeyBolb = new TestSDF_API.TestCLibrary.ENVELOPEDKEYBLOB.ByReference();
pEnvelopedKeyBolb.setECCCipherBlob(ECCCipherBlob);
pEnvelopedKeyBolb.setPubKey(pubKey);
pEnvelopedKeyBolb.setCbEncryptedPriKey(new byte[64]);
rv = api.Test_SDF_Ext_GenEnvKeyPairBlob_ECC(hSessionHandle, sm4, EncPubKey, pEnvelopedKeyBolb);

搞定。

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