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JCE Cryptography

The JCE strategy enables you to use the wider range of cryptography capabilities provided by the Java Cryptography Extension.

You can use cryptography capabilities in two ways:

  • Password-based encryption (PBE):
    This method enables you to encrypt and sign content by providing only an encryption password.

  • Key-based encryption:
    Similar to how PGP and XML encryption works, this method enables you to configure a symmetric or asymmetric key to perform encryption and signing operations.

You can encrypt all, or part of a message using any of these two methods.

PBE

This method applies a hash function over the provided password to generate a symmetric key that is compatible with standard encryption algorithms. Because PBE only requires a password, a global configuration element is not needed for the PBE operations.

Configure Password-Based Encryption from Anypoint Studio

To configure PBE from Anypoint Studio, follow these steps:

  1. From the Mule palette, add Crypto to your project.

    See Install the Extension for instructions.

  2. Select the desired operation, and drag the component to the flow:

    crypto-pbe-add

  3. In the component view, configure the Algorithm and Password properties:

    crypto-pbe-config

XML Examples

The following are XML examples for each each of the PBE operations:

  • PBE Encryption

    <crypto:jce-encrypt-pbe password="a-Sup3r_Secure-Passw0rd"/>

    If no algorithm is specified, PBEWithHmacSHA256AndAES_128 is used.

  • PBE Decryption

    <crypto:jce-decrypt-pbe algorithm="PBEWithHmacSHA256AndAES_128" password="a-Sup3r_Secure-Passw0rd"/>

  • PBE Signature

    <crypto:jce-sign-pbe password="a-Sup3r_Secure-Passw0rd"/>

    If no algorithm is specified, PBEWithHmacSHA256 is used.

  • PBE Signature Validation

    <crypto:jce-validate-pbe password="a-Sup3r_Secure-Passw0rd" algorithm="PBEWithHmacSHA256" expected="#[vars.expectedSignature]"/>

    The expected parameter defines the signature used to validate the message.

Key-Based Encryption

Configure a symmetric or asymmetric key to perform encryption and signing operations.

Configure Key-Based Encryption from Anypoint Studio

To configure key-based encryption operations from Anypoint Studio, follow these steps:

  1. From the Mule palette, add Crypto to your project.

    See Install the Extension for instructions.

  2. Select the desired operation, and drag the component to the flow:

    crypto-jce-add

  3. Open the component properties and select an existing module configuration, or create a new one by specifying values for Keystore, Type (JKS, JCEKS, PKCS12), and Password.

    You can also add symmetric or asymmetric key information to be used in the sign operations:

    crypto-jce-global-config

  4. Configure Key selection by using a Key id value previously defined in the module configuration, or define a new one for this operation:

    crypto-jce-config

  5. Select the algorithm to use during the operation.

XML Examples

The following XML examples show a JCE configuration that defines symmetric and asymmetric keys and different operations using these keys.

  • Configuration

    In this example, a keystore with different types of keys is defined in a JCE configuration:

    <crypto:jce-config name="jceConfig" keystore="jce/keys.jceks" password="123456" type="JCEKS">
    <crypto:jce-key-infos>
        <crypto:jce-symmetric-key-info keyId="aes128" alias="aes128" password="123456"/>
        <crypto:jce-symmetric-key-info keyId="blowfish" alias="blowfish" password="123456"/>
        <crypto:jce-symmetric-key-info keyId="hmacsha256" alias="hmacsha256" password="123456"/>
        <crypto:jce-asymmetric-key-info keyId="rsa" alias="myrsakey" password="123456"/>
        <crypto:jce-asymmetric-key-info keyId="dsa" alias="mydsakey" password="123456"/>
    </crypto:jce-key-infos>
</crypto:jce-config>

  • Asymmetric Encryption

    The following example operations use the asymmetric keys defined in the previous configuration.

    Encrypting a Message
    <crypto:jce-encrypt config-ref="jceConfig" keyId="rsa" algorithm="RSA"/>
    Decrypting a Message
    <crypto:jce-decrypt config-ref="jceConfig" keyId="rsa" algorithm="RSA"/>

  • Symmetric Encryption

    The following example operations use the symmetric keys defined in the previous configuration.

    Encrypting a Message
    <crypto:jce-encrypt config-ref="jceConfig" keyId="aes128" algorithm="AES"/>
    Decrypting a Message
    <crypto:jce-decrypt config-ref="jceConfig" keyId="aes128" algorithm="AES"/>

  • Signature and Validation

    The following are examples of sign and validate operations that use a key defined in the previous configuration:

    Signing a Message
    <crypto:jce-sign config-ref="jceConfig" keyId="dsa" algorithm="SHA256withDSA"/>
    Validating a Signature
    <crypto:jce-validate config-ref="jceConfig" keyId="dsa" algorithm="SHA256withDSA" expected="#[vars.expectedSignature]"/>

    The expected parameter defines the signature used to validate the message.

Reference

Module Configuration

JCE configuration for Java keystores and inline keys.

Parameters

Name Type Description Default Value Required

Name

String

The name for this configuration. Connectors reference the configuration with this name.

x 

Keystore

String

Path to the keystore file.

 

Type

Enumeration, one of:

  • JKS

  • JCEKS

  • PKCS12

Type of the keystore.

JKS

 

Password

String

Password for unlocking the keystore.

 

Jce Key Infos

Array of One of:

List of keys to be considered, with internal IDs for referencing them.

 

Expiration Policy

Expiration Policy

Configures the minimum amount of time that a dynamic configuration instance can remain idle before the runtime considers it eligible for expiration. This does not mean that the platform will expire the instance at the exact moment that it becomes eligible. The runtime will actually purge the instances when it sees it fit.

 

Jce Decrypt Operation

<crypto:jce-decrypt>

Decrypt a stream using JCE, with a key.

Parameters

Name Type Description Default Value Required

Configuration

String

The name of the configuration to use.

x 

Content

Binary

You can decrypt all, or part of a message by using a DataWeave expression.
For example, you can set Content to #[payload.name] to decrypt only an encrypted variable called name from the payload

#[payload]

 

Output Mime Type

String

The mime type of the payload that this operation outputs.

 

Output Encoding

String

The encoding of the payload that this operation outputs.

 

Streaming Strategy

Configure if repeatable streams should be used and their behavior

 

Cipher

String

A raw cipher string in the form "algorithm/mode/padding" according to the Java crypto documentation, for example AES/CBC/PKCS5Padding. Note that GCM mode is currently not supported, and not all algorithm/mode/padding combinations are valid.

 

Algorithm

Enumeration, one of:

  • AES

  • AESWrap

  • ARCFOUR

  • Blowfish

  • DES

  • DESede

  • RC2

  • DESedeWrap

  • RSA

Algorithm from a list of valid definitions. When you specify this field, Mule automatically selects the mode and padding to use according to the following list:

  • AES/CBC/PKCS5Padding

  • AESWrap/ECB/NoPadding

  • ARCFOUR/ECB/NoPadding

  • Blowfish/CBC/PKCS5Padding

  • DES/CBC/PKCS5Padding

  • DESede/CBC/PKCS5Padding

  • RC2/CBC/PKCS5Padding

  • DESedeWrap/CBC/NoPadding

  • RSA/ECB/OAEPWithSHA-256AndMGF1Padding

 

Key Id

String

The key ID, as defined in the JCE configuration.

 

Jce Key Info

One of:

An inline key definition.

 

Target Variable

String

The name of a variable on which the operation's output will be placed

 

Target Value

String

An expression that will be evaluated against the operation's output and the outcome of that expression will be stored in the target variable

#[payload]

 

Output Type

Binary

Throws

  • CRYPTO:MISSING_KEY  

  • CRYPTO:KEY  

  • CRYPTO:PASSPHRASE  

  • CRYPTO:PARAMETERS  

  • CRYPTO:DECRYPTION  

Jce Encrypt Operation

<crypto:jce-encrypt>

Encrypt a stream using JCE, with a key.

Parameters

Name Type Description Default Value Required

Configuration

String

The name of the configuration to use.

x 

Content

Binary

You can encrypt all, or part of a message by using a DataWeave expression.
For example, you can set Content to #[payload.name] to encrypt only a variable called name from the payload

#[payload]

 

Output Mime Type

String

The mime type of the payload that this operation outputs.

 

Output Encoding

String

The encoding of the payload that this operation outputs.

 

Streaming Strategy

Configure if repeatable streams should be used and their behavior

 

Cipher

String

A raw cipher string in the form "algorithm/mode/padding" according to the Java crypto documentation, for example AES/CBC/PKCS5Padding. Note that GCM mode is currently not supported, and not all algorithm/mode/padding combinations are valid.

 

Algorithm

Enumeration, one of:

  • AES

  • AESWrap

  • ARCFOUR

  • Blowfish

  • DES

  • DESede

  • RC2

  • DESedeWrap

  • RSA

Algorithm from a list of valid definitions. When you specify this field, Mule automatically selects the mode and padding to use according to the following list:

  • AES/CBC/PKCS5Padding

  • AESWrap/ECB/NoPadding

  • ARCFOUR/ECB/NoPadding

  • Blowfish/CBC/PKCS5Padding

  • DES/CBC/PKCS5Padding

  • DESede/CBC/PKCS5Padding

  • RC2/CBC/PKCS5Padding

  • DESedeWrap/CBC/NoPadding

  • RSA/ECB/OAEPWithSHA-256AndMGF1Padding

 

Key Id

String

The key ID, as defined in the JCE configuration.

 

Jce Key Info

One of:

An inline key definition.

 

Target Variable

String

The name of a variable on which the operation's output will be placed

 

Target Value

String

An expression that will be evaluated against the operation's output and the outcome of that expression will be stored in the target variable

#[payload]

 

Output Type

Binary

Throws

  • CRYPTO:MISSING_KEY  

  • CRYPTO:ENCRYPTION  

  • CRYPTO:KEY  

  • CRYPTO:PARAMETERS  

Jce Sign Operation

<crypto:jce-sign>

Sign a stream using JCE, with a key.

Parameters

Name Type Description Default Value Required

Configuration

String

The name of the configuration to use.

x 

Content

Binary

The content to sign

#[payload]

 

Algorithm

Enumeration, one of:

  • MD2withRSA

  • MD5withRSA

  • SHA1withRSA

  • SHA224withRSA

  • SHA256withRSA

  • SHA384withRSA

  • SHA512withRSA

  • NONEwithDSA

  • SHA1withDSA

  • SHA224withDSA

  • SHA256withDSA

  • HmacMD5

  • HmacSHA1

  • HmacSHA224

  • HmacSHA256

  • HmacSHA384

  • HmacSHA512

The algorithm used for signing

HmacSHA256

 

Output Mime Type

String

The mime type of the payload that this operation outputs.

 

Key Id

String

The key ID, as defined in the JCE configuration.

 

Jce Key Info

One of:

An inline key definition.

 

Target Variable

String

The name of a variable on which the operation's output will be placed

 

Target Value

String

An expression that will be evaluated against the operation's output and the outcome of that expression will be stored in the target variable

#[payload]

 

Output Type

String

Throws

  • CRYPTO:MISSING_KEY  

  • CRYPTO:KEY  

  • CRYPTO:PASSPHRASE  

  • CRYPTO:SIGNATURE  

Jce Validate Operation

<crypto:jce-validate>

Validate a stream against a signature, using a key.

Parameters

Name Type Description Default Value Required

Configuration

String

The name of the configuration to use.

x 

Value

Binary

the message to authenticate

#[payload]

 

Expected

String

the signature to validate

x 

Algorithm

Enumeration, one of:

  • MD2withRSA

  • MD5withRSA

  • SHA1withRSA

  • SHA224withRSA

  • SHA256withRSA

  • SHA384withRSA

  • SHA512withRSA

  • NONEwithDSA

  • SHA1withDSA

  • SHA224withDSA

  • SHA256withDSA

  • HmacMD5

  • HmacSHA1

  • HmacSHA224

  • HmacSHA256

  • HmacSHA384

  • HmacSHA512

The algorithm used for signing

HmacSHA256

 

Key Id

String

The key ID, as defined in the JCE configuration.

 

Jce Key Info

One of:

An inline key definition.

 

Throws

  • CRYPTO:MISSING_KEY  

  • CRYPTO:VALIDATION  

Jce Decrypt Pbe Operation

<crypto:jce-decrypt-pbe>

Decrypt a stream using JCE, with a password.

Parameters

Name Type Description Default Value Required

Content

Binary

You can decrypt all, or part of a message by using a DataWeave expression.
For example, you can set Content to #[payload.name] to decrypt only an encrypted variable called name from the payload

#[payload]

 

Algorithm

Enumeration, one of:

  • PBEWithMD5AndDES

  • PBEWithMD5AndTripleDES

  • PBEWithSHA1AndDESede

  • PBEWithSHA1AndRC2_40

  • PBEWithSHA1AndRC2_128

  • PBEWithSHA1AndRC4_40

  • PBEWithSHA1AndRC4_128

  • PBEWithHmacSHA1AndAES_128

  • PBEWithHmacSHA224AndAES_128

  • PBEWithHmacSHA256AndAES_128

  • PBEWithHmacSHA384AndAES_128

  • PBEWithHmacSHA512AndAES_128

  • PBEWithHmacSHA1AndAES_256

  • PBEWithHmacSHA224AndAES_256

  • PBEWithHmacSHA256AndAES_256

  • PBEWithHmacSHA384AndAES_256

  • PBEWithHmacSHA512AndAES_256

The algorithm for generating a key from the password

PBEWithHmacSHA256AndAES_128

 

Password

String

The password for decryption

x 

Output Mime Type

String

The mime type of the payload that this operation outputs.

 

Output Encoding

String

The encoding of the payload that this operation outputs.

 

Streaming Strategy

Configure if repeatable streams should be used and their behavior

 

Target Variable

String

The name of a variable on which the operation's output will be placed

 

Target Value

String

An expression that will be evaluated against the operation's output and the outcome of that expression will be stored in the target variable

#[payload]

 

Output Type

Binary

Throws

  • CRYPTO:MISSING_KEY  

  • CRYPTO:KEY  

  • CRYPTO:PASSPHRASE  

  • CRYPTO:PARAMETERS  

  • CRYPTO:DECRYPTION  

Jce Encrypt Pbe Operation

<crypto:jce-encrypt-pbe>

Encrypt a stream using JCE, with a password.

Parameters

Name Type Description Default Value Required

Content

Binary

You can encrypt all, or part of a message by using a DataWeave expression.
For example, you can set Content to #[payload.name] to encrypt only a variable called name from the payload

#[payload]

 

Algorithm

Enumeration, one of:

  • PBEWithMD5AndDES

  • PBEWithMD5AndTripleDES

  • PBEWithSHA1AndDESede

  • PBEWithSHA1AndRC2_40

  • PBEWithSHA1AndRC2_128

  • PBEWithSHA1AndRC4_40

  • PBEWithSHA1AndRC4_128

  • PBEWithHmacSHA1AndAES_128

  • PBEWithHmacSHA224AndAES_128

  • PBEWithHmacSHA256AndAES_128

  • PBEWithHmacSHA384AndAES_128

  • PBEWithHmacSHA512AndAES_128

  • PBEWithHmacSHA1AndAES_256

  • PBEWithHmacSHA224AndAES_256

  • PBEWithHmacSHA256AndAES_256

  • PBEWithHmacSHA384AndAES_256

  • PBEWithHmacSHA512AndAES_256

The algorithm for generating a key from the password

PBEWithHmacSHA256AndAES_128

 

Password

String

The password for encryption

x 

Output Mime Type

String

The mime type of the payload that this operation outputs.

 

Output Encoding

String

The encoding of the payload that this operation outputs.

 

Streaming Strategy

Configure if repeatable streams should be used and their behavior

 

Target Variable

String

The name of a variable on which the operation's output will be placed

 

Target Value

String

An expression that will be evaluated against the operation's output and the outcome of that expression will be stored in the target variable

#[payload]

 

Output Type

Binary

Throws

  • CRYPTO:MISSING_KEY  

  • CRYPTO:ENCRYPTION  

  • CRYPTO:KEY  

  • CRYPTO:PARAMETERS  

Jce Sign Pbe Operation

<crypto:jce-sign-pbe>

Sign a stream using JCE, with a key.

Parameters

Name Type Description Default Value Required

Content

Binary

the content to sign

#[payload]

 

Algorithm

Enumeration, one of:

  • HmacPBESHA1

  • PBEWithHmacSHA1

  • PBEWithHmacSHA224

  • PBEWithHmacSHA256

  • PBEWithHmacSHA384

  • PBEWithHmacSHA512

The algorithm used for signing

PBEWithHmacSHA256

 

Password

String

The password used to sign

x 

Output Mime Type

String

The mime type of the payload that this operation outputs.

 

Target Variable

String

The name of a variable on which the operation's output will be placed

 

Target Value

String

An expression that will be evaluated against the operation's output and the outcome of that expression will be stored in the target variable

#[payload]

 

Output Type

String

Throws

  • CRYPTO:MISSING_KEY  

  • CRYPTO:KEY  

  • CRYPTO:PASSPHRASE  

  • CRYPTO:SIGNATURE  

Jce Validate Pbe Operation

<crypto:jce-validate-pbe>

Validate a stream against a signature, using a key.

Parameters

Name Type Description Default Value Required

Value

Binary

the message to authenticate

#[payload]

 

Expected

String

the signature to validate

x 

Algorithm

Enumeration, one of:

  • HmacPBESHA1

  • PBEWithHmacSHA1

  • PBEWithHmacSHA224

  • PBEWithHmacSHA256

  • PBEWithHmacSHA384

  • PBEWithHmacSHA512

The algorithm used for signing

PBEWithHmacSHA256

 

Password

String

The password used to sign

x 

Throws

  • CRYPTO:MISSING_KEY  

  • CRYPTO:VALIDATION  

Types Definition

Expiration Policy

Field Type Description Default Value Required

Max Idle Time

Number

A scalar time value for the maximum amount of time a dynamic configuration instance should be allowed to be idle before it’s considered eligible for expiration

Time Unit

Enumeration, one of:

  • NANOSECONDS

  • MICROSECONDS

  • MILLISECONDS

  • SECONDS

  • MINUTES

  • HOURS

  • DAYS

A time unit that qualifies the maxIdleTime attribute

Repeatable In Memory Stream

Field Type Description Default Value Required

Initial Buffer Size

Number

This is the amount of memory that will be allocated in order to consume the stream and provide random access to it. If the stream contains more data than can be fit into this buffer, then it will be expanded by according to the bufferSizeIncrement attribute, with an upper limit of maxInMemorySize.

Buffer Size Increment

Number

This is by how much will be buffer size by expanded if it exceeds its initial size. Setting a value of zero or lower will mean that the buffer should not expand, meaning that a STREAM_MAXIMUM_SIZE_EXCEEDED error will be raised when the buffer gets full.

Max Buffer Size

Number

This is the maximum amount of memory that will be used. If more than that is used then a STREAM_MAXIMUM_SIZE_EXCEEDED error will be raised. A value lower or equal to zero means no limit.

Buffer Unit

Enumeration, one of:

  • BYTE

  • KB

  • MB

  • GB

The unit in which all these attributes are expressed

Repeatable File Store Stream

Field Type Description Default Value Required

Max In Memory Size

Number

Defines the maximum memory that the stream should use to keep data in memory. If more than that is consumed then it will start to buffer the content on disk.

Buffer Unit

Enumeration, one of:

  • BYTE

  • KB

  • MB

  • GB

The unit in which maxInMemorySize is expressed

Jce Asymmetric Key Info

Field Type Description Default Value Required

Key Id

String

Internal key ID for referencing from operations.

x

Alias

String

Alias of the key in the keystore.

x

Password

String

Password used to unlock the private part of the key.

Jce Symmetric Key Info

Field Type Description Default Value Required

Key Id

String

Internal key ID for referencing from operations.

x

Alias

String

Alias of the key in the keystore.

x

Password

String

Password used to unlock the key.

x