public class sun.security.util.SignatureUtil
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: sun.security.util.SignatureUtil
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // sun.security.util.SignatureUtil this
         0: .line 40
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // sun.security.util.SignatureUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/security/util/SignatureUtil;

  private static java.security.AlgorithmParameters createAlgorithmParameters(java.lang.String, byte[]);
    descriptor: (Ljava/lang/String;[B)Ljava/security/AlgorithmParameters;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // java.lang.String algName
        start local 1 // byte[] paramBytes
         0: .line 49
            aload 0 /* algName */
            invokestatic java.security.AlgorithmParameters.getInstance:(Ljava/lang/String;)Ljava/security/AlgorithmParameters;
         1: .line 48
            astore 2 /* result */
        start local 2 // java.security.AlgorithmParameters result
         2: .line 50
            aload 2 /* result */
            aload 1 /* paramBytes */
            invokevirtual java.security.AlgorithmParameters.init:([B)V
         3: .line 51
            aload 2 /* result */
         4: areturn
        end local 2 // java.security.AlgorithmParameters result
         5: .line 52
      StackMap locals:
      StackMap stack: java.lang.Exception
            astore 2 /* e */
        start local 2 // java.lang.Exception e
         6: .line 53
            new java.security.ProviderException
            dup
            aload 2 /* e */
            invokespecial java.security.ProviderException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 2 // java.lang.Exception e
        end local 1 // byte[] paramBytes
        end local 0 // java.lang.String algName
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    7     0     algName  Ljava/lang/String;
            0    7     1  paramBytes  [B
            2    5     2      result  Ljava/security/AlgorithmParameters;
            6    7     2           e  Ljava/lang/Exception;
      Exception table:
        from    to  target  type
           0     4       5  Class java.security.NoSuchAlgorithmException
           0     4       5  Class java.io.IOException
    Exceptions:
      throws java.security.ProviderException
    MethodParameters:
            Name  Flags
      algName     
      paramBytes  

  private static java.security.spec.AlgorithmParameterSpec getParamSpec(java.lang.String, java.security.AlgorithmParameters);
    descriptor: (Ljava/lang/String;Ljava/security/AlgorithmParameters;)Ljava/security/spec/AlgorithmParameterSpec;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=4, args_size=2
        start local 0 // java.lang.String sigName
        start local 1 // java.security.AlgorithmParameters params
         0: .line 61
            aload 1 /* params */
            ifnonnull 1
            aconst_null
            areturn
         1: .line 63
      StackMap locals:
      StackMap stack:
            aload 0 /* sigName */
            invokevirtual java.lang.String.toUpperCase:()Ljava/lang/String;
            ldc "RSA"
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            iconst_m1
            if_icmpne 7
         2: .line 64
            new java.security.ProviderException
            dup
         3: .line 65
            new java.lang.StringBuilder
            dup
            ldc "Unrecognized algorithm for signature parameters "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
         4: .line 66
            aload 0 /* sigName */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         5: .line 65
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
         6: .line 64
            invokespecial java.security.ProviderException.<init>:(Ljava/lang/String;)V
            athrow
         7: .line 71
      StackMap locals:
      StackMap stack:
            aload 1 /* params */
            invokevirtual java.security.AlgorithmParameters.getAlgorithm:()Ljava/lang/String;
            astore 2 /* alg */
        start local 2 // java.lang.String alg
         8: .line 72
            aload 2 /* alg */
            aload 0 /* sigName */
            invokevirtual java.lang.String.equalsIgnoreCase:(Ljava/lang/String;)Z
            ifne 9
            aload 2 /* alg */
            ldc "."
            invokevirtual java.lang.String.indexOf:(Ljava/lang/String;)I
            iconst_m1
            if_icmpeq 15
         9: .line 74
      StackMap locals: java.lang.String
      StackMap stack:
            aload 0 /* sigName */
        10: .line 75
            aload 1 /* params */
            invokevirtual java.security.AlgorithmParameters.getEncoded:()[B
        11: .line 74
            invokestatic sun.security.util.SignatureUtil.createAlgorithmParameters:(Ljava/lang/String;[B)Ljava/security/AlgorithmParameters;
            astore 1 /* params */
        12: .line 76
            goto 15
      StackMap locals:
      StackMap stack: java.io.IOException
        13: astore 3 /* e */
        start local 3 // java.io.IOException e
        14: .line 77
            new java.security.ProviderException
            dup
            aload 3 /* e */
            invokespecial java.security.ProviderException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 3 // java.io.IOException e
        15: .line 80
      StackMap locals:
      StackMap stack:
            aload 1 /* params */
            invokestatic sun.security.rsa.RSAUtil.getParamSpec:(Ljava/security/AlgorithmParameters;)Ljava/security/spec/AlgorithmParameterSpec;
            areturn
        end local 2 // java.lang.String alg
        end local 1 // java.security.AlgorithmParameters params
        end local 0 // java.lang.String sigName
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   16     0  sigName  Ljava/lang/String;
            0   16     1   params  Ljava/security/AlgorithmParameters;
            8   16     2      alg  Ljava/lang/String;
           14   15     3        e  Ljava/io/IOException;
      Exception table:
        from    to  target  type
           9    12      13  Class java.io.IOException
    Exceptions:
      throws java.security.InvalidAlgorithmParameterException, java.security.ProviderException
    MethodParameters:
         Name  Flags
      sigName  
      params   

  public static void specialSetParameter(java.security.Signature, byte[]);
    descriptor: (Ljava/security/Signature;[B)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=4, args_size=2
        start local 0 // java.security.Signature sig
        start local 1 // byte[] paramBytes
         0: .line 87
            aload 1 /* paramBytes */
            ifnull 5
         1: .line 88
            aload 0 /* sig */
            invokevirtual java.security.Signature.getAlgorithm:()Ljava/lang/String;
            astore 2 /* sigName */
        start local 2 // java.lang.String sigName
         2: .line 90
            aload 2 /* sigName */
            aload 1 /* paramBytes */
            invokestatic sun.security.util.SignatureUtil.createAlgorithmParameters:(Ljava/lang/String;[B)Ljava/security/AlgorithmParameters;
         3: .line 89
            astore 3 /* params */
        start local 3 // java.security.AlgorithmParameters params
         4: .line 91
            aload 0 /* sig */
            aload 3 /* params */
            invokestatic sun.security.util.SignatureUtil.specialSetParameter:(Ljava/security/Signature;Ljava/security/AlgorithmParameters;)V
        end local 3 // java.security.AlgorithmParameters params
        end local 2 // java.lang.String sigName
         5: .line 93
      StackMap locals:
      StackMap stack:
            return
        end local 1 // byte[] paramBytes
        end local 0 // java.security.Signature sig
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    6     0         sig  Ljava/security/Signature;
            0    6     1  paramBytes  [B
            2    5     2     sigName  Ljava/lang/String;
            4    5     3      params  Ljava/security/AlgorithmParameters;
    Exceptions:
      throws java.security.InvalidAlgorithmParameterException, java.security.ProviderException
    MethodParameters:
            Name  Flags
      sig         
      paramBytes  

  public static void specialSetParameter(java.security.Signature, java.security.AlgorithmParameters);
    descriptor: (Ljava/security/Signature;Ljava/security/AlgorithmParameters;)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // java.security.Signature sig
        start local 1 // java.security.AlgorithmParameters params
         0: .line 100
            aload 1 /* params */
            ifnull 3
         1: .line 101
            aload 0 /* sig */
            invokevirtual java.security.Signature.getAlgorithm:()Ljava/lang/String;
            astore 2 /* sigName */
        start local 2 // java.lang.String sigName
         2: .line 102
            aload 0 /* sig */
            aload 2 /* sigName */
            aload 1 /* params */
            invokestatic sun.security.util.SignatureUtil.getParamSpec:(Ljava/lang/String;Ljava/security/AlgorithmParameters;)Ljava/security/spec/AlgorithmParameterSpec;
            invokevirtual java.security.Signature.setParameter:(Ljava/security/spec/AlgorithmParameterSpec;)V
        end local 2 // java.lang.String sigName
         3: .line 104
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.security.AlgorithmParameters params
        end local 0 // java.security.Signature sig
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0      sig  Ljava/security/Signature;
            0    4     1   params  Ljava/security/AlgorithmParameters;
            2    3     2  sigName  Ljava/lang/String;
    Exceptions:
      throws java.security.InvalidAlgorithmParameterException, java.security.ProviderException
    MethodParameters:
        Name  Flags
      sig     
      params  
}
SourceFile: "SignatureUtil.java"