使用HarmonyOS生成的SM2key加密成功，加密后的内容传到服务器报解密失败

// this.secreteBlob是HarmonyOS加密成功doFinal返回的值；可以把b发送到服务端进行解密 
let b = new SM2_Ciphertext().d2i_SM2_Ciphertext(this.uint8ArrayToHex (this.secreteBlob.data)) 
 
// 相关方法如下： 
uint8ArrayToHex (uint8Array: Uint8Array) { 
  return buffer.from(uint8Array).toString('hex') 
} 
// sm2Ciphertext.ets 第一部分 
import hilog from '@ohos.hilog'; 
import { SM2_SEQUENCE } from './sm2Sequence'; 
 
export class ASN1Util { 
  static BOOLEAN: string = "01"; 
  static INTEGER: string = "02"; 
  static BIT_STRING: string = "03"; 
  static OCTET_STRING: string = "04"; 
  static NULL: string = "05"; 
  static REAL: string = "09"; 
  static ENUMERATED: string = "0a"; 
  static SEQUENCE: string = "30"; 
  static SET: string = "31"; 
} 
 
export class SM2_Ciphertext { 
  /** 
   * 用于将SM2裸密文数据序列化 
   * @param primal_data SM2裸密钥数据，长度为96+明文长度（字节），输入格式为C1C3C2的Hex字符串 
   * @returns 返回序列化后的标准密文数据，输出格式为Hex字符串 
   */ 
  i2d_SM2_Ciphertext(primal_data: string): string { 
    let sm2_sequence = new SM2_SEQUENCE(); 
    sm2_sequence.C1x = primal_data.slice(0, 64); 
    primal_data = primal_data.slice(64, primal_data.length); 
    sm2_sequence.C1y = primal_data.slice(0, 64); 
    primal_data = primal_data.slice(64, primal_data.length); 
    sm2_sequence.C3 = primal_data.slice(0, 64); 
    primal_data = primal_data.slice(64, primal_data.length); 
    sm2_sequence.C2 = primal_data; 
 
    let C1x_title: string = (Number.parseInt("0x" + sm2_sequence.C1x.slice(0, 2)) > 127) ? "022100" : "0220"; 
    let C1y_title: string = (Number.parseInt("0x" + sm2_sequence.C1y.slice(0, 2)) > 127) ? "022100" : "0220"; 
    let C3_title: string = "0420"; 
    let C2_title: string = "04" + this.genLenHex(sm2_sequence.C2); 
    let sequence_message: string = C1x_title + sm2_sequence.C1x + C1y_title + sm2_sequence.C1y + C3_title + sm2_sequence.C3 + C2_title + sm2_sequence.C2; 
    let sequence_lenHex:string = this.genLenHex(sequence_message); 
    let standard_data = "30" + sequence_lenHex + sequence_message; 
    return standard_data; 
  } 
  // sm2Ciphertext.ets 第二部分 
  /** 
   * 用于将标准SM2密文数据解码 
   * @param standard_data 标准SM2密文数据，符合ASN.1编码标准，输入格式为Hex字符串 
   * @returns 返回ASN.1解码后的SM2密文数据 
   */ 
  d2i_SM2_Ciphertext(standard_data: string): string { 
    let message: string = standard_data; 
    // 起始标识为03 
    if (!message.startsWith(ASN1Util.SEQUENCE)) { 
      this.ciphertextErr(); 
    } 
    message = message.slice(ASN1Util.SEQUENCE.length, message.length); 
 
    // SM2 sequence内容的长度 
    let sequence_lenHex: string = this.getLenHex(message); 
    message = message.slice(sequence_lenHex.length, message.length); 
    let sequence_len: number = this.lenHex2number(sequence_lenHex); 
    if (sequence_len != message.length / 2) { 
      this.ciphertextErr(); 
    } 
 
    let sm2_sequence = new SM2_SEQUENCE(); 
    message = this.readC1(sm2_sequence, message); 
    message = this.readC3(sm2_sequence, message); 
    message = this.readC2(sm2_sequence, message); 
 
    // C1C3C2格式 
    // let primal_data: string = sm2_sequence.C1x + sm2_sequence.C1y + sm2_sequence.C3 + sm2_sequence.C2; 
 
    // C1C2C3格式 
    let primal_data: string = sm2_sequence.C1x + sm2_sequence.C1y + sm2_sequence.C2 + sm2_sequence.C3; 
    return primal_data; 
  } 
 
  // 生成传入内容的长度域 
  genLenHex(content: string): string { 
    let size: number = content.length / 2; 
    let lenHex: string = ("00" + size.toString(16)).slice(-2); 
    if (size < 0x80) { 
      return lenHex; 
    } 
    let lenHex_size: number = lenHex.length / 2; 
    return (lenHex_size | 0x80).toString(16) + lenHex; 
  } 
 
  // 提取长度域的Hex字符串 
  getLenHex(data: string): string { 
    let byte: number = Number.parseInt("0x" + data.slice(0, 2)); 
    let len_size: number = byte > 127 ? byte - 0x80 + 1 : 1; 
    return data.slice(0, len_size * 2); 
  } 
 
  // 将长度域的Hex字符串转为整型 
  lenHex2number(lenHex: string): number { 
    if (lenHex.length == 2) { 
      return Number.parseInt("0x" + lenHex); 
    } 
    return Number.parseInt("0x" + lenHex.slice(2, lenHex.length)); 
  } 
  // sm2Ciphertext.ets 第三部分 
  ciphertextErr() { 
    hilog.error(0, "d2i_SM2_Ciphertext", "密文格式错误"); 
    throw new Error("SM2 ciphertext error!") 
  } 
 
  readC1(sm2_sequence: SM2_SEQUENCE, data: string): string { 
    let xy: string[] = []; 
    for (let i = 0; i < 2; i++) { 
      if (data.startsWith("0220")) { 
        xy[i] = data.slice(4, 68); 
        data = data.slice(68, data.length); 
      } else if (data.startsWith("022100")) { 
        xy[i] = data.slice(6, 70); 
        data = data.slice(70, data.length); 
      } else { 
        this.ciphertextErr(); 
      } 
    } 
    sm2_sequence.C1x = xy[0]; 
    sm2_sequence.C1y = xy[1]; 
    return data; 
  } 
 
  readC2(sm2_sequence: SM2_SEQUENCE, data: string): string { 
    if (data.startsWith(ASN1Util.OCTET_STRING)) { 
      data = data.slice(ASN1Util.OCTET_STRING.length, data.length); 
      let C2_lenHex = this.getLenHex(data); 
      data = data.slice(C2_lenHex.length, data.length) 
      if (this.lenHex2number(C2_lenHex) != data.length / 2) { 
        this.ciphertextErr() 
      } 
      sm2_sequence.C2 = data; 
    } else { 
      this.ciphertextErr(); 
    } 
    return data; 
  } 
 
  readC3(sm2_sequence: SM2_SEQUENCE, data: string): string { 
    if (data.startsWith("0420")) { 
      sm2_sequence.C3 = data.slice(4, 68); 
      data = data.slice(68, data.length); 
    } else { 
      this.ciphertextErr(); 
    } 
    return data; 
  } 
} 
// sm2Sequence.ets 
export class SM2_SEQUENCE{ 
  private _C1x: string = ""; 
  private _C1y: string = ""; 
  private _C2: string = ""; 
  private _C3: string = ""; 
 
  public set C1x(value: string) { 
    this._C1x = value; 
  } 
 
  public get C1x(): string { 
    return this._C1x; 
  } 
 
  public set C1y(value: string) { 
    this._C1y = value; 
  } 
 
  public get C1y(): string { 
    return this._C1y; 
  } 
 
  public set C2(value: string) { 
    this._C2 = value; 
  } 
 
  public get C2(): string { 
    return this._C2; 
  } 
 
  public set C3(value: string) { 
    this._C3 = value; 
  } 
 
  public get C3(): string { 
    return this._C3; 
  } 
 
  public toString():string{ 
    return JSON.stringify(this); 
  } 
}
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