com.codeheadsystems.shash

Interface Hasher

All Known Implementing Classes:

HasherImpl

public interface Hasher

Provides access to standard hasher structure

Method Summary

Modifier and Type	Method and Description
byte[]	generateSalt() Provides access to a salt for this specific hasher.
HashHolder	hash(byte[] bytes) Will hash the bytes given and return a 'sized' salted hash depending on the algorithm picked on creation.
HashHolder	hash(java.lang.String hashingWord) Will hash the bytes given and return a 'sized' salted hash depending on the algorithm picked on creation.
boolean	isSame(byte[] salt, byte[] previousHash, byte[] payload) Compares a previously hashed set of bytes with a new payload.
boolean	isSame(byte[] salt, byte[] previousHash, java.lang.String payload) Compares a previously hashed set of bytes with a new payload.
boolean	isSame(HashHolder hashHolder, byte[] payload) Compares a previously hashed set of bytes with a new payload.
boolean	isSame(HashHolder hashHolder, java.lang.String payload) Compares a previously hashed set of bytes with a new payload.

Method Detail

hash

HashHolder hash(byte[] bytes)

Will hash the bytes given and return a 'sized' salted hash depending on the algorithm picked on creation. Salt is automatically generated.

Parameters:

bytes - from the payload.

Returns:

HashHolder of a fixed size depending on how this was created, plus the salt.

hash

HashHolder hash(java.lang.String hashingWord)

Will hash the bytes given and return a 'sized' salted hash depending on the algorithm picked on creation. Salt is automatically generated.

Parameters:

hashingWord - for the payload, converted to bytes in a consistent way for this hasher.

Returns:

HashHolder of a fixed size depending on how this was created, plus the salt.

generateSalt

byte[] generateSalt()

Provides access to a salt for this specific hasher.

Returns:

byte[] with the salt

isSame

boolean isSame(HashHolder hashHolder,
               byte[] payload)

Compares a previously hashed set of bytes with a new payload. The salt is taken from the hashedBytes.

Parameters:

hashHolder - the previously hashed word with salt.

payload - The payload to hash with the salt and check against the hashedBytes given

Returns:

boolean to say if they are the same or not

isSame

boolean isSame(HashHolder hashHolder,
               java.lang.String payload)

Compares a previously hashed set of bytes with a new payload. The salt is taken from the hashedBytes. Note this will convert the payload to a byte[] in a consistent manner.

Parameters:

hashHolder - the previously hashed word with salt.

payload - The payload to hash with the salt and check against the hashedBytes given

Returns:

boolean to say if they are the same or not

isSame

boolean isSame(byte[] salt,
               byte[] previousHash,
               java.lang.String payload)

Compares a previously hashed set of bytes with a new payload. Note this will convert the payload to a byte[] in a consistent manner.

Parameters:

salt - that was used originally to generate the hash

previousHash - generated from the original text/bytes

payload - The incoming payload you want to check

Returns:

boolean to say if they are the same or not

isSame

boolean isSame(byte[] salt,
               byte[] previousHash,
               byte[] payload)

Compares a previously hashed set of bytes with a new payload. Note this will convert the payload to a byte[] in a consistent manner.

Parameters:

salt - that was used originally to generate the hash

previousHash - generated from the original text/bytes

payload - The incoming payload you want to check

Returns:

boolean to say if they are the same or not