Class WeakMessageDigest

• TopLevel.Object
  • dw.crypto.WeakMessageDigest

This API provides access to Deprecated algorithms.

See MessageDigest for full documentation. WeakMessageDigest is simply a drop-in replacement that only supports deprecated algorithms. This is helpful when you need to deal with weak algorithms for backward compatibility purposes, but MessageDigest should always be used for new development and for anything intended to be secure.

Note: this class handles sensitive security-related data. Pay special attention to PCI DSS v3. requirements 2, 4, and 12.

Constant	Description
DIGEST_MD2: String = "MD2"	Constant representing the MD2 algorithm.
DIGEST_MD5: String = "MD5"	Constant representing the MD5 algorithm.
DIGEST_SHA: String = "SHA"	Constant representing the SHA algorithm.
DIGEST_SHA_1: String = "SHA-1"	Constant representing the SHA 1 algorithm.

Constructor	Description
WeakMessageDigest(String)	Construct a MessageDigest with the specified algorithm name.

Method	Description
digest()	Completes the hash computation by performing final operations such as padding.
digest(String)	Digests the passed string and returns a computed hash value as a string.
digest(String, Bytes)	Computes the hash value for the passed array of bytes.
digestBytes(Bytes)	Computes the hash value for the passed Bytes.
updateBytes(Bytes)	Updates the digest using the passed Bytes.

assign, create, create, defineProperties, defineProperty, entries, freeze, fromEntries, getOwnPropertyDescriptor, getOwnPropertyNames, getOwnPropertySymbols, getPrototypeOf, hasOwnProperty, is, isExtensible, isFrozen, isPrototypeOf, isSealed, keys, preventExtensions, propertyIsEnumerable, seal, setPrototypeOf, toLocaleString, toString, valueOf, values

DIGEST_MD2: String = "MD2"

Constant representing the MD2 algorithm.

This algorithm is obsolete. Do not use it for any sensitive data

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DIGEST_MD5: String = "MD5"

Constant representing the MD5 algorithm.

This algorithm is obsolete. Do not use it for any sensitive data

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DIGEST_SHA: String = "SHA"

Constant representing the SHA algorithm.

This algorithm is obsolete. Do not use it for any sensitive data

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DIGEST_SHA_1: String = "SHA-1"

Constant representing the SHA 1 algorithm.

This algorithm is obsolete. Do not use it for any sensitive data

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WeakMessageDigest(algorithm: String)

Construct a MessageDigest with the specified algorithm name.

Parameters:

• algorithm - The standard name of the digest algorithm, must not be null and must be a supported algorithm.

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digest(): Bytes

Completes the hash computation by performing final operations such as padding.

The binary representation of the message is typically derived from a string and the resulting hash is typically converted with base64 back into a string. Example:

Encoding.toBase64( digest() );

Returns:

• The resulting hash value.

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digest(input: String): String

Digests the passed string and returns a computed hash value as a string. The passed String is first encoded into a sequence of bytes using the platform's default encoding. The digest then performs any prerequisite padding, before computing the hash value. The hash is then converted into a string by converting all digits to hexadecimal.

Parameters:

• input - The value to hash as String, must not be null.

Returns:

• The resulting hash value as hex-encoded string.

Deprecated:

Deprecated because the conversion of the input to bytes using the default platform encoding and the hex-encoded return value are not generally appropriate.

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digest(algorithm: String, input: Bytes): Bytes

Computes the hash value for the passed array of bytes. The algorithm argument is optional. If null, then the algorithm established at construction time is used.

The binary representation of the message is typically derived from a string and the resulting hash is typically converted with base64 back into a string. Example:

Encoding.toBase64( digest( "MD5", new Bytes( "my password", "UTF-8" ) ) );

Parameters:

• algorithm - The standard name of the digest algorithm, or null if the algorithm passed at construction time is to be used. The algorithm must be a supported algorithm.
• input - The value to hash, must not be null.

Returns:

• The resulting hash value.

Deprecated:

Deprecated because the digest algorithm should be the one set in the constructor.

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digestBytes(input: Bytes): Bytes

Computes the hash value for the passed Bytes.

The binary representation of the message is typically derived from a string and the resulting hash is typically converted with base64 back into a string. Example:

Encoding.toBase64( digest( new Bytes( "my password", "UTF-8" ) ) );

Parameters:

• input - The value to hash, must not be null.

Returns:

• The resulting hash value.

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updateBytes(input: Bytes): void

Updates the digest using the passed Bytes.

Parameters:

• input - The value to hash, must not be null.

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