pro.fessional.mirana.bits

Class MdHelp

java.lang.Object

pro.fessional.mirana.bits.MdHelp

public class MdHelp
extends Object

MessageDigest helper and thread safe

Since:

2021-01-24

Author:

trydofor

Field Summary

Fields

Modifier and Type	Field and Description
String	algorithm
int	hexLength
static int	LEN_MD5_HEX
static int	LEN_SHA1_HEX
static int	LEN_SHA256_HEX
static String	MD_MD5
static String	MD_SHA1
static String	MD_SHA256
static MdHelp	md5
static MdHelp	sha1
static MdHelp	sha256

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MdHelp(String algorithm)
protected	MdHelp(String algorithm, int hexLen)

Method Summary

Modifier and Type	Method and Description
boolean	asSum(@Nullable String str)
boolean	check(@Nullable String sum, byte[] bytes)
boolean	check(@Nullable String sum, @Nullable InputStream ins)
boolean	check(@Nullable String sum, @Nullable String str)
static boolean	checks(@Nullable String sum, @Nullable Object obj) Auto check sum based on sum length, and obj type
byte[]	digest(byte[] bytes)
@NotNull String	getAlgorithm()
int	getHexLength()
static int	guessHexLength(@NotNull String algorithm) guess hex sum length, return 0 if not (MD5,SHA-1,SHA-256)
boolean	isSum(@Nullable String str)
static @NotNull MessageDigest	newMd5()
@NotNull MessageDigest	newOne() create a Mac instance, the instance it not thread-safe
static @NotNull MessageDigest	newOne(@NotNull String algorithm)
static @NotNull MessageDigest	newSha1()
static @NotNull MessageDigest	newSha256()
static @NotNull MdHelp	of(@NotNull String algorithm)
static @NotNull MdHelp	of(@NotNull String algorithm, int hexLen)
@NotNull String	sum(byte[] bytes)
@NotNull String	sum(byte[] bytes, boolean upper)
@NotNull String	sum(@Nullable InputStream ins)
@NotNull String	sum(@Nullable InputStream ins, boolean upper)
@NotNull String	sum(@Nullable String str)
@NotNull String	sum(@Nullable String str, boolean upper)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

algorithm

public final String algorithm

hexLength

public final int hexLength

LEN_MD5_HEX

public static final int LEN_MD5_HEX

See Also:

Constant Field Values

LEN_SHA1_HEX

public static final int LEN_SHA1_HEX

See Also:

Constant Field Values

LEN_SHA256_HEX

public static final int LEN_SHA256_HEX

See Also:

Constant Field Values

MD_MD5

public static final String MD_MD5

See Also:

Constant Field Values

MD_SHA1

public static final String MD_SHA1

See Also:

Constant Field Values

MD_SHA256

public static final String MD_SHA256

See Also:

Constant Field Values

md5

public static final MdHelp md5

sha1

public static final MdHelp sha1

sha256

public static final MdHelp sha256

Constructor Detail

MdHelp

protected MdHelp(String algorithm)

MdHelp

protected MdHelp(String algorithm,
                 int hexLen)

Method Detail

isSum

public boolean isSum(@Nullable
                     @Nullable String str)

asSum

public boolean asSum(@Nullable
                     @Nullable String str)

getAlgorithm

@NotNull
public @NotNull String getAlgorithm()

getHexLength

public int getHexLength()

sum

@NotNull
public @NotNull String sum(@Nullable
                                    @Nullable String str)

sum

@NotNull
public @NotNull String sum(@Nullable
                                    @Nullable InputStream ins)

sum

@NotNull
public @NotNull String sum(byte[] bytes)

sum

@NotNull
public @NotNull String sum(@Nullable
                                    @Nullable String str,
                                    boolean upper)

sum

@NotNull
public @NotNull String sum(@Nullable
                                    @Nullable InputStream ins,
                                    boolean upper)

sum

@NotNull
public @NotNull String sum(byte[] bytes,
                                    boolean upper)

digest

public byte[] digest(byte[] bytes)

newOne

@NotNull
public @NotNull MessageDigest newOne()

create a Mac instance, the instance it not thread-safe

check

public boolean check(@Nullable
                     @Nullable String sum,
                     byte[] bytes)

check

public boolean check(@Nullable
                     @Nullable String sum,
                     @Nullable
                     @Nullable String str)

check

public boolean check(@Nullable
                     @Nullable String sum,
                     @Nullable
                     @Nullable InputStream ins)

guessHexLength

public static int guessHexLength(@NotNull
                                 @NotNull String algorithm)

guess hex sum length, return 0 if not (MD5,SHA-1,SHA-256)

of

@NotNull
public static @NotNull MdHelp of(@NotNull
                                          @NotNull String algorithm)

of

@NotNull
public static @NotNull MdHelp of(@NotNull
                                          @NotNull String algorithm,
                                          int hexLen)

newMd5

@NotNull
public static @NotNull MessageDigest newMd5()

newSha1

@NotNull
public static @NotNull MessageDigest newSha1()

newSha256

@NotNull
public static @NotNull MessageDigest newSha256()

newOne

@NotNull
public static @NotNull MessageDigest newOne(@NotNull
                                                     @NotNull String algorithm)

checks

public static boolean checks(@Nullable
                             @Nullable String sum,
                             @Nullable
                             @Nullable Object obj)

Auto check sum based on sum length, and obj type

Parameters:

sum - case-insensitive HEX string, support MD5,SHA1,SHA256

obj - support byte[], CharSequence, InputStream