https://github.com/spring-projects/spring-framework: Spring Core (Spring IO)
  • Juergen Hoeller 
public abstract class org.springframework.util.DigestUtils
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: org.springframework.util.DigestUtils
  super_class: java.lang.Object
{
  private static final java.lang.String MD5_ALGORITHM_NAME;
    descriptor: Ljava/lang/String;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: "MD5"

  private static final char[] HEX_CHARS;
    descriptor: [C
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=0, args_size=0
         0: .line 41
            bipush 16
            newarray 5
            dup
            iconst_0
            bipush 48
            castore
            dup
            iconst_1
            bipush 49
            castore
            dup
            iconst_2
            bipush 50
            castore
            dup
            iconst_3
            bipush 51
            castore
            dup
            iconst_4
            bipush 52
            castore
            dup
            iconst_5
            bipush 53
            castore
            dup
            bipush 6
            bipush 54
            castore
            dup
            bipush 7
            bipush 55
            castore
            dup
            bipush 8
            bipush 56
            castore
            dup
            bipush 9
            bipush 57
            castore
            dup
            bipush 10
            bipush 97
            castore
            dup
            bipush 11
            bipush 98
            castore
            dup
            bipush 12
            bipush 99
            castore
            dup
            bipush 13
            bipush 100
            castore
            dup
            bipush 14
            bipush 101
            castore
            dup
            bipush 15
            bipush 102
            castore
         1: .line 40
            putstatic org.springframework.util.DigestUtils.HEX_CHARS:[C
         2: .line 41
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.springframework.util.DigestUtils this
         0: .line 36
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.springframework.util.DigestUtils this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/springframework/util/DigestUtils;

  public static byte[] md5Digest(byte[]);
    descriptor: ([B)[B
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // byte[] bytes
         0: .line 50
            ldc "MD5"
            aload 0 /* bytes */
            invokestatic org.springframework.util.DigestUtils.digest:(Ljava/lang/String;[B)[B
            areturn
        end local 0 // byte[] bytes
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0  bytes  [B
    MethodParameters:
       Name  Flags
      bytes  

  public static byte[] md5Digest(java.io.InputStream);
    descriptor: (Ljava/io/InputStream;)[B
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.io.InputStream inputStream
         0: .line 60
            ldc "MD5"
            aload 0 /* inputStream */
            invokestatic org.springframework.util.DigestUtils.digest:(Ljava/lang/String;Ljava/io/InputStream;)[B
            areturn
        end local 0 // java.io.InputStream inputStream
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    1     0  inputStream  Ljava/io/InputStream;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
             Name  Flags
      inputStream  

  public static java.lang.String md5DigestAsHex(byte[]);
    descriptor: ([B)Ljava/lang/String;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // byte[] bytes
         0: .line 69
            ldc "MD5"
            aload 0 /* bytes */
            invokestatic org.springframework.util.DigestUtils.digestAsHexString:(Ljava/lang/String;[B)Ljava/lang/String;
            areturn
        end local 0 // byte[] bytes
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0  bytes  [B
    MethodParameters:
       Name  Flags
      bytes  

  public static java.lang.String md5DigestAsHex(java.io.InputStream);
    descriptor: (Ljava/io/InputStream;)Ljava/lang/String;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.io.InputStream inputStream
         0: .line 79
            ldc "MD5"
            aload 0 /* inputStream */
            invokestatic org.springframework.util.DigestUtils.digestAsHexString:(Ljava/lang/String;Ljava/io/InputStream;)Ljava/lang/String;
            areturn
        end local 0 // java.io.InputStream inputStream
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    1     0  inputStream  Ljava/io/InputStream;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
             Name  Flags
      inputStream  

  public static java.lang.StringBuilder appendMd5DigestAsHex(byte[], java.lang.StringBuilder);
    descriptor: ([BLjava/lang/StringBuilder;)Ljava/lang/StringBuilder;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // byte[] bytes
        start local 1 // java.lang.StringBuilder builder
         0: .line 90
            ldc "MD5"
            aload 0 /* bytes */
            aload 1 /* builder */
            invokestatic org.springframework.util.DigestUtils.appendDigestAsHex:(Ljava/lang/String;[BLjava/lang/StringBuilder;)Ljava/lang/StringBuilder;
            areturn
        end local 1 // java.lang.StringBuilder builder
        end local 0 // byte[] bytes
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0    bytes  [B
            0    1     1  builder  Ljava/lang/StringBuilder;
    MethodParameters:
         Name  Flags
      bytes    
      builder  

  public static java.lang.StringBuilder appendMd5DigestAsHex(java.io.InputStream, java.lang.StringBuilder);
    descriptor: (Ljava/io/InputStream;Ljava/lang/StringBuilder;)Ljava/lang/StringBuilder;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // java.io.InputStream inputStream
        start local 1 // java.lang.StringBuilder builder
         0: .line 102
            ldc "MD5"
            aload 0 /* inputStream */
            aload 1 /* builder */
            invokestatic org.springframework.util.DigestUtils.appendDigestAsHex:(Ljava/lang/String;Ljava/io/InputStream;Ljava/lang/StringBuilder;)Ljava/lang/StringBuilder;
            areturn
        end local 1 // java.lang.StringBuilder builder
        end local 0 // java.io.InputStream inputStream
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    1     0  inputStream  Ljava/io/InputStream;
            0    1     1      builder  Ljava/lang/StringBuilder;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
             Name  Flags
      inputStream  
      builder      

  private static java.security.MessageDigest getDigest(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/security/MessageDigest;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=2, args_size=1
        start local 0 // java.lang.String algorithm
         0: .line 112
            aload 0 /* algorithm */
            invokestatic java.security.MessageDigest.getInstance:(Ljava/lang/String;)Ljava/security/MessageDigest;
         1: areturn
         2: .line 114
      StackMap locals:
      StackMap stack: java.security.NoSuchAlgorithmException
            astore 1 /* ex */
        start local 1 // java.security.NoSuchAlgorithmException ex
         3: .line 115
            new java.lang.IllegalStateException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Could not find MessageDigest with algorithm \""
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 0 /* algorithm */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc "\""
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            aload 1 /* ex */
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/String;Ljava/lang/Throwable;)V
            athrow
        end local 1 // java.security.NoSuchAlgorithmException ex
        end local 0 // java.lang.String algorithm
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    4     0  algorithm  Ljava/lang/String;
            3    4     1         ex  Ljava/security/NoSuchAlgorithmException;
      Exception table:
        from    to  target  type
           0     1       2  Class java.security.NoSuchAlgorithmException
    MethodParameters:
           Name  Flags
      algorithm  

  private static byte[] digest(java.lang.String, byte[]);
    descriptor: (Ljava/lang/String;[B)[B
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // java.lang.String algorithm
        start local 1 // byte[] bytes
         0: .line 120
            aload 0 /* algorithm */
            invokestatic org.springframework.util.DigestUtils.getDigest:(Ljava/lang/String;)Ljava/security/MessageDigest;
            aload 1 /* bytes */
            invokevirtual java.security.MessageDigest.digest:([B)[B
            areturn
        end local 1 // byte[] bytes
        end local 0 // java.lang.String algorithm
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    1     0  algorithm  Ljava/lang/String;
            0    1     1      bytes  [B
    MethodParameters:
           Name  Flags
      algorithm  
      bytes      

  private static byte[] digest(java.lang.String, java.io.InputStream);
    descriptor: (Ljava/lang/String;Ljava/io/InputStream;)[B
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=5, args_size=2
        start local 0 // java.lang.String algorithm
        start local 1 // java.io.InputStream inputStream
         0: .line 124
            aload 0 /* algorithm */
            invokestatic org.springframework.util.DigestUtils.getDigest:(Ljava/lang/String;)Ljava/security/MessageDigest;
            astore 2 /* messageDigest */
        start local 2 // java.security.MessageDigest messageDigest
         1: .line 125
            aload 1 /* inputStream */
            instanceof org.springframework.util.UpdateMessageDigestInputStream
            ifeq 4
         2: .line 126
            aload 1 /* inputStream */
            checkcast org.springframework.util.UpdateMessageDigestInputStream
            aload 2 /* messageDigest */
            invokevirtual org.springframework.util.UpdateMessageDigestInputStream.updateMessageDigest:(Ljava/security/MessageDigest;)V
         3: .line 127
            aload 2 /* messageDigest */
            invokevirtual java.security.MessageDigest.digest:()[B
            areturn
         4: .line 130
      StackMap locals: java.security.MessageDigest
      StackMap stack:
            sipush 4096
            newarray 8
            astore 3 /* buffer */
        start local 3 // byte[] buffer
         5: .line 131
            iconst_m1
            istore 4 /* bytesRead */
        start local 4 // int bytesRead
         6: .line 132
            goto 8
         7: .line 133
      StackMap locals: byte[] int
      StackMap stack:
            aload 2 /* messageDigest */
            aload 3 /* buffer */
            iconst_0
            iload 4 /* bytesRead */
            invokevirtual java.security.MessageDigest.update:([BII)V
         8: .line 132
      StackMap locals:
      StackMap stack:
            aload 1 /* inputStream */
            aload 3 /* buffer */
            invokevirtual java.io.InputStream.read:([B)I
            dup
            istore 4 /* bytesRead */
            iconst_m1
            if_icmpne 7
         9: .line 135
            aload 2 /* messageDigest */
            invokevirtual java.security.MessageDigest.digest:()[B
            areturn
        end local 4 // int bytesRead
        end local 3 // byte[] buffer
        end local 2 // java.security.MessageDigest messageDigest
        end local 1 // java.io.InputStream inputStream
        end local 0 // java.lang.String algorithm
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   10     0      algorithm  Ljava/lang/String;
            0   10     1    inputStream  Ljava/io/InputStream;
            1   10     2  messageDigest  Ljava/security/MessageDigest;
            5   10     3         buffer  [B
            6   10     4      bytesRead  I
    Exceptions:
      throws java.io.IOException
    MethodParameters:
             Name  Flags
      algorithm    
      inputStream  

  private static java.lang.String digestAsHexString(java.lang.String, byte[]);
    descriptor: (Ljava/lang/String;[B)Ljava/lang/String;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // java.lang.String algorithm
        start local 1 // byte[] bytes
         0: .line 140
            aload 0 /* algorithm */
            aload 1 /* bytes */
            invokestatic org.springframework.util.DigestUtils.digestAsHexChars:(Ljava/lang/String;[B)[C
            astore 2 /* hexDigest */
        start local 2 // char[] hexDigest
         1: .line 141
            new java.lang.String
            dup
            aload 2 /* hexDigest */
            invokespecial java.lang.String.<init>:([C)V
            areturn
        end local 2 // char[] hexDigest
        end local 1 // byte[] bytes
        end local 0 // java.lang.String algorithm
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    2     0  algorithm  Ljava/lang/String;
            0    2     1      bytes  [B
            1    2     2  hexDigest  [C
    MethodParameters:
           Name  Flags
      algorithm  
      bytes      

  private static java.lang.String digestAsHexString(java.lang.String, java.io.InputStream);
    descriptor: (Ljava/lang/String;Ljava/io/InputStream;)Ljava/lang/String;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // java.lang.String algorithm
        start local 1 // java.io.InputStream inputStream
         0: .line 145
            aload 0 /* algorithm */
            aload 1 /* inputStream */
            invokestatic org.springframework.util.DigestUtils.digestAsHexChars:(Ljava/lang/String;Ljava/io/InputStream;)[C
            astore 2 /* hexDigest */
        start local 2 // char[] hexDigest
         1: .line 146
            new java.lang.String
            dup
            aload 2 /* hexDigest */
            invokespecial java.lang.String.<init>:([C)V
            areturn
        end local 2 // char[] hexDigest
        end local 1 // java.io.InputStream inputStream
        end local 0 // java.lang.String algorithm
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    2     0    algorithm  Ljava/lang/String;
            0    2     1  inputStream  Ljava/io/InputStream;
            1    2     2    hexDigest  [C
    Exceptions:
      throws java.io.IOException
    MethodParameters:
             Name  Flags
      algorithm    
      inputStream  

  private static java.lang.StringBuilder appendDigestAsHex(java.lang.String, byte[], java.lang.StringBuilder);
    descriptor: (Ljava/lang/String;[BLjava/lang/StringBuilder;)Ljava/lang/StringBuilder;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=4, args_size=3
        start local 0 // java.lang.String algorithm
        start local 1 // byte[] bytes
        start local 2 // java.lang.StringBuilder builder
         0: .line 150
            aload 0 /* algorithm */
            aload 1 /* bytes */
            invokestatic org.springframework.util.DigestUtils.digestAsHexChars:(Ljava/lang/String;[B)[C
            astore 3 /* hexDigest */
        start local 3 // char[] hexDigest
         1: .line 151
            aload 2 /* builder */
            aload 3 /* hexDigest */
            invokevirtual java.lang.StringBuilder.append:([C)Ljava/lang/StringBuilder;
            areturn
        end local 3 // char[] hexDigest
        end local 2 // java.lang.StringBuilder builder
        end local 1 // byte[] bytes
        end local 0 // java.lang.String algorithm
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    2     0  algorithm  Ljava/lang/String;
            0    2     1      bytes  [B
            0    2     2    builder  Ljava/lang/StringBuilder;
            1    2     3  hexDigest  [C
    MethodParameters:
           Name  Flags
      algorithm  
      bytes      
      builder    

  private static java.lang.StringBuilder appendDigestAsHex(java.lang.String, java.io.InputStream, java.lang.StringBuilder);
    descriptor: (Ljava/lang/String;Ljava/io/InputStream;Ljava/lang/StringBuilder;)Ljava/lang/StringBuilder;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=4, args_size=3
        start local 0 // java.lang.String algorithm
        start local 1 // java.io.InputStream inputStream
        start local 2 // java.lang.StringBuilder builder
         0: .line 157
            aload 0 /* algorithm */
            aload 1 /* inputStream */
            invokestatic org.springframework.util.DigestUtils.digestAsHexChars:(Ljava/lang/String;Ljava/io/InputStream;)[C
            astore 3 /* hexDigest */
        start local 3 // char[] hexDigest
         1: .line 158
            aload 2 /* builder */
            aload 3 /* hexDigest */
            invokevirtual java.lang.StringBuilder.append:([C)Ljava/lang/StringBuilder;
            areturn
        end local 3 // char[] hexDigest
        end local 2 // java.lang.StringBuilder builder
        end local 1 // java.io.InputStream inputStream
        end local 0 // java.lang.String algorithm
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    2     0    algorithm  Ljava/lang/String;
            0    2     1  inputStream  Ljava/io/InputStream;
            0    2     2      builder  Ljava/lang/StringBuilder;
            1    2     3    hexDigest  [C
    Exceptions:
      throws java.io.IOException
    MethodParameters:
             Name  Flags
      algorithm    
      inputStream  
      builder      

  private static char[] digestAsHexChars(java.lang.String, byte[]);
    descriptor: (Ljava/lang/String;[B)[C
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // java.lang.String algorithm
        start local 1 // byte[] bytes
         0: .line 162
            aload 0 /* algorithm */
            aload 1 /* bytes */
            invokestatic org.springframework.util.DigestUtils.digest:(Ljava/lang/String;[B)[B
            astore 2 /* digest */
        start local 2 // byte[] digest
         1: .line 163
            aload 2 /* digest */
            invokestatic org.springframework.util.DigestUtils.encodeHex:([B)[C
            areturn
        end local 2 // byte[] digest
        end local 1 // byte[] bytes
        end local 0 // java.lang.String algorithm
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    2     0  algorithm  Ljava/lang/String;
            0    2     1      bytes  [B
            1    2     2     digest  [B
    MethodParameters:
           Name  Flags
      algorithm  
      bytes      

  private static char[] digestAsHexChars(java.lang.String, java.io.InputStream);
    descriptor: (Ljava/lang/String;Ljava/io/InputStream;)[C
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // java.lang.String algorithm
        start local 1 // java.io.InputStream inputStream
         0: .line 167
            aload 0 /* algorithm */
            aload 1 /* inputStream */
            invokestatic org.springframework.util.DigestUtils.digest:(Ljava/lang/String;Ljava/io/InputStream;)[B
            astore 2 /* digest */
        start local 2 // byte[] digest
         1: .line 168
            aload 2 /* digest */
            invokestatic org.springframework.util.DigestUtils.encodeHex:([B)[C
            areturn
        end local 2 // byte[] digest
        end local 1 // java.io.InputStream inputStream
        end local 0 // java.lang.String algorithm
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    2     0    algorithm  Ljava/lang/String;
            0    2     1  inputStream  Ljava/io/InputStream;
            1    2     2       digest  [B
    Exceptions:
      throws java.io.IOException
    MethodParameters:
             Name  Flags
      algorithm    
      inputStream  

  private static char[] encodeHex(byte[]);
    descriptor: ([B)[C
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=4, args_size=1
        start local 0 // byte[] bytes
         0: .line 172
            bipush 32
            newarray 5
            astore 1 /* chars */
        start local 1 // char[] chars
         1: .line 173
            iconst_0
            istore 2 /* i */
        start local 2 // int i
         2: goto 7
         3: .line 174
      StackMap locals: char[] int
      StackMap stack:
            aload 0 /* bytes */
            iload 2 /* i */
            iconst_2
            idiv
            baload
            istore 3 /* b */
        start local 3 // byte b
         4: .line 175
            aload 1 /* chars */
            iload 2 /* i */
            getstatic org.springframework.util.DigestUtils.HEX_CHARS:[C
            iload 3 /* b */
            iconst_4
            iushr
            bipush 15
            iand
            caload
            castore
         5: .line 176
            aload 1 /* chars */
            iload 2 /* i */
            iconst_1
            iadd
            getstatic org.springframework.util.DigestUtils.HEX_CHARS:[C
            iload 3 /* b */
            bipush 15
            iand
            caload
            castore
        end local 3 // byte b
         6: .line 173
            iinc 2 /* i */ 2
      StackMap locals:
      StackMap stack:
         7: iload 2 /* i */
            aload 1 /* chars */
            arraylength
            if_icmplt 3
        end local 2 // int i
         8: .line 178
            aload 1 /* chars */
            areturn
        end local 1 // char[] chars
        end local 0 // byte[] bytes
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    9     0  bytes  [B
            1    9     1  chars  [C
            2    8     2      i  I
            4    6     3      b  B
    MethodParameters:
       Name  Flags
      bytes  
}
SourceFile: "DigestUtils.java"