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Sm9Signature.java
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108 lines (97 loc) · 2.53 KB
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/*
* Copyright 2014-2023 The GmSSL Project. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
package org.gmssl;
public class Sm9Signature {
private long sm9_sign_ctx = 0;
private boolean inited = false;
private boolean do_sign = true;
public Sm9Signature(boolean do_sign) {
if ((this.sm9_sign_ctx = GmSSLJNI.sm9_sign_ctx_new()) == 0) {
throw new GmSSLException("");
}
if (do_sign == true) {
if (GmSSLJNI.sm9_sign_init(this.sm9_sign_ctx) != 1) {
throw new GmSSLException("");
}
} else {
if (GmSSLJNI.sm9_verify_init(this.sm9_sign_ctx) != 1) {
throw new GmSSLException("");
}
}
this.inited = true;
this.do_sign = do_sign;
}
public void reset(boolean do_sign) {
if (do_sign == true) {
if (GmSSLJNI.sm9_sign_init(this.sm9_sign_ctx) != 1) {
throw new GmSSLException("");
}
} else {
if (GmSSLJNI.sm9_verify_init(this.sm9_sign_ctx) != 1) {
throw new GmSSLException("");
}
}
this.inited = true;
this.do_sign = do_sign;
}
public void update(byte[] data, int offset, int len) {
if (this.inited == false) {
throw new GmSSLException("");
}
if (data == null
|| offset < 0
|| len < 0
|| offset + len <= 0
|| data.length < offset + len) {
throw new GmSSLException("");
}
if (this.do_sign == true) {
if (GmSSLJNI.sm9_sign_update(this.sm9_sign_ctx, data, offset, len) != 1) {
throw new GmSSLException("");
}
} else {
if (GmSSLJNI.sm9_verify_update(this.sm9_sign_ctx, data, offset, len) != 1) {
throw new GmSSLException("");
}
}
}
public void update(byte[] data) {
update(data, 0, data.length);
}
public byte[] sign(Sm9SignKey signKey) {
if (this.inited == false) {
throw new GmSSLException("");
}
if (this.do_sign == false) {
throw new GmSSLException("");
}
byte[] signature;
if ((signature = GmSSLJNI.sm9_sign_finish(this.sm9_sign_ctx, signKey.getKey())) == null) {
throw new GmSSLException("");
}
this.inited = false;
return signature;
}
public boolean verify(byte[] signature, Sm9SignMasterKey masterPublicKey, String id) {
if (this.inited == false) {
throw new GmSSLException("");
}
if (this.do_sign == true) {
throw new GmSSLException("");
}
int ret;
ret = GmSSLJNI.sm9_verify_finish(sm9_sign_ctx, signature, masterPublicKey.getPublicMasterKey(), id);
this.inited = false;
if (ret == 1) {
return true;
} else {
return false;
}
}
}